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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 35. Отображено 35.
26-05-2023 дата публикации

Mobile machine and unmanned driving perception mapping system for unstructured scene of mobile machine

Номер: CN116168075A
Автор: FU SHENGJIE, WANG WENTAO, LIN TIANLIANG, MIAO CHENG, ZHANG HONGBO, LEE JONG SHIN, ZHANG CHUNHUI, YAO YU, LIN YUANZHENG
Принадлежит:

The invention provides a mobile machine and an unmanned driving perception mapping system of an unstructured scene thereof, which introduces environmental elevation data to assist in performing an accurate segmentation task on boundaries between unstructured targets, and improves the problems of low edge discrimination capability, inaccurate identification and the like of a traditional perception mapping system in an unstructured environment. Instance segmentation mask information is introduced and added into a mapping front end to assist mapping, so that the problems of low mapping robustness, lack of man-machine interaction capability, dynamic obstacle interference and the like caused by low matching efficiency of traditional mapping SLAM in an unstructured scene are solved, and the perception capability of mobile machinery in an unstructured unmanned operation scene is enhanced.

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Номер записи: 1
01-08-2023 дата публикации

Crawler-type mobile engineering machinery, movement control method and device thereof and medium

Номер: CN116520855A
Автор: LIN TIANLIANG, TIAN BAIYU, CHEN QIHUAI, LI ZHONGSHEN, MIAO CHENG, ZHANG CHUNHUI, YAO YU, LIN YUANZHENG
Принадлежит:

The invention provides a crawler-type mobile engineering machine, a movement control method and device thereof and a medium, and relates to the technical field of crawler-type engineering machines. The movement control method comprises the following steps: S1, acquiring a map of an environment where the crawler-type mobile engineering machinery is located, and a starting position and a target position of movement control; and S2, according to the map, the starting position and the target position, searching an optimal path through a global path planning algorithm, and obtaining a navigation track located in the road area. And S7, performing movement control on the crawler-type mobile engineering machinery according to the navigation track until the crawler-type mobile engineering machinery moves to the target position. Wherein when the crawler-type mobile engineering machinery moves to the turning position, the differential control model based on the course angle is adopted for movement ...

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Номер записи: 2
28-07-2023 дата публикации

Image matching algorithm, device and equipment for automatic agricultural machinery and storage medium

Номер: CN116503628A
Автор: LIN FANGFANG, LIN TIANLIANG, WU JIANGDONG, MIAO CHENG, LEE JONG SHIN, LI LEI, LIU YANG, LIU ZIHAO, TIAN BAIYU, WU XIA
Принадлежит:

The invention provides an image matching method, device and equipment for automatic agricultural machinery and a storage medium, and the method comprises the steps: firstly obtaining an image group collected by an image collection device, carrying out the feature enhancement of the image group, calling a neural network based on OA-Net improvement to carry out the feature extraction of the image group after feature enhancement, and carrying out the feature extraction of the image group after feature extraction; generating feature data; carrying out dimension reduction processing on the feature data to generate a classification list; and finally, a weighted eight-point algorithm is called to carry out regression calculation on the weight of the classification list to generate a basic matrix, and a camera relative pose regression task is completed based on the basic matrix, so that the problems that an existing image feature matching algorithm is relatively low in robustness for abnormal value ...

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Номер записи: 3
23-05-2023 дата публикации

End cover plug-in type two-way cartridge valve flow distribution radial plunger hydraulic device and working method

Номер: CN116146561A
Автор: GUO TONG, LIU JIANPING, LUO TAO, LIN TIANLIANG, MIAO CHENG, REN HAOLING, CHEN QIHUAI, FU SHENGJIE
Принадлежит:

The invention provides an end cover plug-in type two-way cartridge valve flow distribution radial plunger hydraulic device, which relates to the field of radial plunger hydraulic devices, and comprises a shell, a rotating shaft rotationally arranged at one end of the shell, and a main shaft rotationally arranged at the other end of the shell, the first two-way cartridge valve and the second two-way cartridge valve correspond to each plunger assembly; according to the end cover plug-in type two-way cartridge valve flow distribution radial plunger hydraulic device, the two-way cartridge valve is adopted for flow distribution, a brand-new flow distribution method is provided, and due to the advantages that the two-way cartridge valve is excellent in sealing performance and large in valve port drift diameter, the device can be applied to the high-pressure and large-flow environment; due to the fact that opening and closing of the valve port of the two-way cartridge valve can be adjusted, compared ...

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Номер записи: 4
06-06-2023 дата публикации

Electric sweeper and electro-hydraulic driving system thereof

Номер: CN116219934A
Автор: REN HAOLING, YU BING, CHEN QIHUAI, QIAN CONG, HUANG QIUFANG, MIAO CHENG, YAO YU, LIN TIANLIANG, FU SHENGJIE, CHEN JUNYI
Принадлежит:

The invention provides an electric sweeper and an electro-hydraulic driving system thereof. The electric sweeper comprises an upper controller, a driving assembly, a hydraulic assembly, a disc brush driving assembly and a sensor assembly. The sensor assembly is configured to collect a pressure signal of a disc brush lifting oil cylinder of a hydraulic cylinder of the hydraulic assembly and a displacement feedback signal of the disc brush lifting oil cylinder of the hydraulic cylinder of the hydraulic assembly in real time; the upper controller is configured to control a motor of the driving assembly to drive the hydraulic assembly to operate at a torque corresponding to a preset motor target torque according to the pressure signal and the displacement feedback signal, so that closed-loop control over displacement of a disc brush lifting oil cylinder of a hydraulic cylinder of the hydraulic assembly and the rotating speed of the motor is achieved; the power loss of the hydraulic assembly ...

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Номер записи: 5
07-07-2023 дата публикации

Variable-speed variable-torque electric cylinder and engineering machinery thereof

Номер: CN116404803A
Автор: SHI JIARONG, LIN TIANLIANG, CHEN LONG, LIN YUANZHENG, CHEN QIHUAI, MIAO CHENG, ZHENG WEIJIE, FENG HAONAN, ZHANG HUIYU, WANG QI, ZHANG XING
Принадлежит:

The invention provides a variable-speed variable-torque electric cylinder, and relates to the technical field of electric cylinder devices, the variable-speed variable-torque electric cylinder comprises a cylinder body and a driving motor, a control system, a continuously variable transmission driving system, a continuously variable transmission driven system and an actuating rod are installed in the cylinder body, and the driving motor is in transmission connection with the continuously variable transmission driving system; the continuously variable transmission driving system is in transmission connection with the continuously variable transmission driven system through a cylinder belt; the continuously variable transmission driven system is suitable for driving the actuating rod to move; the continuously variable transmission driving system is connected with a driving shaft control motor electrically connected with the control system, and the continuously variable transmission driven ...

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Номер записи: 6
27-06-2023 дата публикации

All-electric driving coiled tubing operation machine and driving system thereof

Номер: CN116345452A
Автор: SHI JIARONG, LIN TIANLIANG, DONG JINYOU, LIN YUANZHENG, MIAO CHENG
Принадлежит:

The invention provides an all-electric driving coiled tubing operation machine and a driving system thereof. The all-electric driving coiled tubing operation machine comprises a power source assembly, a roller driving assembly, an injection head driving assembly, a control and electrical accessory assembly, a roller control loop assembly and an injection head control loop assembly. A power battery and a power grid are adopted to provide energy for the whole machine, a dual-power-supply high-voltage management unit achieves switching and distribution of power supplies, meanwhile, pre-charging control and high-voltage safety management are conducted, and safe and reliable operation of a high-voltage power source is guaranteed. In the operation process, electric energy is mainly provided for the continuous pipe operation machine through a power grid, the power battery can serve as an energy storage unit, and energy is recycled and stored in the power battery when the roller motor and the injection ...

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Номер записи: 7
27-06-2023 дата публикации

Active mechanical arm system for increasing running speed of engineering machinery and wheel type engineering machinery

Номер: CN116335219A
Автор: CHEN LONG, LIN TIANLIANG, LIN YUANZHENG, ZHENG WEIJIE, SHI JIARONG, CHEN QIHUAI, MIAO CHENG, WU XIA
Принадлежит:

According to the active mechanical arm system for improving the running speed of the engineering machinery, a complete machine controller obtains sensing information from a laser radar and sends a control signal to a bidirectional pump driving motor to control a bidirectional hydraulic pump to rotate forwards and backwards; therefore, the movable arm oil cylinder is controlled to actively lift to counteract road excitation so as to improve the running smoothness and running speed of the wheel type engineering machinery. According to the active mechanical arm system based on preview information, the running speed of the whole machine can be increased under the condition that a wheel type engineering machine is not provided with a suspension; compared with an existing high-speed emergency rescue vehicle adopting a suspension system, the working load of engineering machinery adopting the system is greatly increased. The active mechanical arm system for improving the running speed of the wheel ...

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Номер записи: 8
18-07-2023 дата публикации

Integrated frame full-electric wheel type engineering machinery in-situ steering and rotating system

Номер: CN116443093A
Автор: CHEN LONG, LIN TIANLIANG, LIN YUANZHENG, CHEN QIHUAI, FU SHENGJIE, LEE JONG SHIN, REN HAOLING, ZHENG WEIJIE, SHI JIARONG, WANG LANG, MIAO CHENG
Принадлежит:

The invention provides an integrated frame full-electric wheel type engineering machinery in-situ steering rotation system, which is characterized in that a whole machine controller obtains control signals from a control handle, a rotation speed adjusting knob and a rotation operation mode button; and a control instruction is sent to the two all-in-one controllers to control the driving and braking rotating speeds and torques of the four wheel edge driving motors, the braking of the four electric brakes and the strokes of the four electric steering cylinders, so that the integrated frame wheel type excavation is controlled to realize the functions of left rotation, right rotation, left rotation braking, right rotation braking and rotation stopping operation. The integrated frame is adopted, the rotary motion of the whole machine is achieved through four-wheel independent in-situ steering of the whole machine, high-voltage and low-voltage wire harnesses of a driving motor of a chassis driving ...

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Номер записи: 9
28-07-2023 дата публикации

Electro-hydraulic composite recycling and regenerating integrated winch system

Номер: CN116495647A
Автор: LIN TIANLIANG, XU XIANGGEN, MIAO CHENG, LEE JONG SHIN, REN HAOLING, FU SHENGJIE, GUO TONG, CHEN QIHUAI, LIN YUANZHENG
Принадлежит:

The invention provides an electro-hydraulic composite recycling and regenerating integrated winch system. The electro-hydraulic composite recycling and regenerating integrated winch system comprises an assembly controller, a transmission assembly, a first electric drive assembly, a second electric drive assembly, a hydraulic drive assembly, a sensing assembly, an electric control handle and a load arranged on a winch speed reducer. The system adopts an electro-hydraulic composite driving system, a power battery is used for supplying power to serve as an energy source of a winch system, the national energy conservation and emission reduction development requirements are met, meanwhile, a motor is used for driving a variable hydraulic pump, or an energy accumulator is used for completing power input to a motor of the variable hydraulic pump; the power output of the volume adjustable hydraulic pump motor and the power output of the electric generator are dynamically coupled to realize electro-hydraulic ...

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Номер записи: 10
12-05-2023 дата публикации

Intelligent road sweeper and control method and device thereof

Номер: CN116104036A
Автор: LIN TIANLIANG, WEN JIANHE, CHEN QIHUAI, YAO YU, MIAO CHENG, LEE JONG SHIN, FU SHENGJIE, REN HAOLING, GUO TONG
Принадлежит:

The invention provides an intelligent road sweeper and a control method and device thereof, and relates to the technical field of sweepers. The control method comprises the following steps: step S01, step S02, step S03, step S04, step S05 and step S10. S01, a picture shot by the front camera is obtained and preprocessed; and S02, according to the preprocessed picture shot by the front camera, obtaining a to-be-cleaned area through an image segmentation algorithm. And S03, according to the to-be-cleaned area, the category and the area of the to-be-cleaned garbage are obtained through a target detection algorithm. And S04, according to the category and the area of the to-be-cleaned garbage, the road surface cleanliness is obtained. And S05, the power of the exhaust fan, the power of the second driving assembly and the power of the water pump are obtained according to the road surface cleanliness. And S10, when the to-be-cleaned area enters the bottom of the vehicle body, the exhaust fan, ...

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Номер записи: 11
27-06-2023 дата публикации

Engineering machinery mapping method, engineering machinery mapping equipment and readable storage medium

Номер: CN116337072A
Автор: REN HAOLING, WU JIANGDONG, LIN TIANLIANG, MIAO CHENG, YAO YU, ZHANG CHUNHUI, LIN YUANZHENG
Принадлежит:

The invention provides a mapping method and equipment for engineering machinery, and a readable storage medium, and the key points of the technical scheme are that motion distortion correction is carried out on a current frame laser point cloud by using IMU data and an IMU odometer, and point-line and point-surface features are extracted according to the curvature of each point of the current frame laser point cloud; and matching a local map with the laser point cloud of the current frame, and performing factor graph optimization on the key frame. And correcting the IMU zero offset according to the output laser odometer, resetting an IMU pre-integrator, and outputting the IMU odometer. When the current frame of laser point cloud meets the loopback detection condition, loopback detection is conducted on the current frame of laser point cloud through a normal distribution transformation algorithm, the global pose is updated, the mapping problem in the engineering machinery degradation scene ...

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Номер записи: 12
06-06-2023 дата публикации

Sliding shoe with self-lubricating surface, preparation method of sliding shoe and sliding shoe pair

Номер: CN116221050A
Автор: FANG YANFEI, LIN MINGZHI, LIN TIANLIANG, REN HAOLING, FU SHENGJIE, CHEN QIHUAI, MIAO CHENG, GUO TONG, DUAN CHUANGCHUANG
Принадлежит:

The invention provides a surface self-lubricating sliding shoe, and relates to the field of hydraulic pump equipment, the surface self-lubricating sliding shoe comprises a sliding shoe body with the bottom provided with a central oil chamber, the sliding shoe body is provided with a ball socket used for being matched with a ball head of a plunger, one end, close to the bottom of the sliding shoe body, of the ball socket is provided with a damping hole, and the damping hole is communicated with the ball socket and the central oil chamber; microtextures are arranged on the surface of the end, used for making contact with a swash plate, of the sliding shoe body, distributed in the circumferential direction of the outer side of the center oil chamber and located between the center oil chamber and the swash plate. According to the piston shoe, the microtexture is arranged on the piston shoe body, so that oil liquid enters the center oil chamber from the plunger cavity through the damping hole ...

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Номер записи: 13
14-07-2023 дата публикации

Rotating shaft control double-valve flow distribution radial plunger hydraulic device and working method thereof

Номер: CN116428102A
Автор: GUO TONG, HUANG XIAOMIN, LIU JIANPING, LUO TAO, LIN TIANLIANG, MIAO CHENG
Принадлежит:

The invention provides a rotating shaft control double-valve flow distribution radial plunger hydraulic device and a working method thereof, and relates to the field of radial plunger hydraulic devices. The device mainly comprises a shell, a plurality of plunger assemblies, an eccentric main shaft rotationally arranged at one end of the shell, hydraulic control one-way valves in one-to-one correspondence with the plunger assemblies, two-way cartridge valves in one-to-one correspondence with the plunger assemblies, a confluence disc and a flow distribution shaft. The invention further provides a working method of the rotating shaft control double-valve flow distribution radial plunger hydraulic device of the single-group pilot oil way. According to the radial plunger hydraulic device, double-valve flow distribution is adopted, a brand-new flow distribution method is provided, due to the advantages that the hydraulic control one-way valve and the two-way cartridge valve are excellent in sealing ...

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Номер записи: 14
18-07-2023 дата публикации

Impact-resistant electric cylinder and control method thereof

Номер: CN116455131A
Автор: CHEN QIHUAI, ZHANG HUIYU, LIN TIANLIANG, MIAO CHENG, LIN YUANZHENG, SHI JIARONG, ZHUANG RONGRONG, JI CHANGXI, REN HAOLING, FU SHENGJIE
Принадлежит:

The invention provides an impact-resistant electric cylinder, which relates to the field of electric cylinders and comprises a three-cavity hydraulic cylinder with three hydraulic cavities, a bidirectional variable-speed servo motor and an electric cylinder shell integrating the three-cavity hydraulic cylinder and the bidirectional variable-speed servo motor. The rotating direction and the rotating speed of the lead screw are controlled by controlling the rotating direction and the rotating speed of the bidirectional variable-rotating-speed servo motor, so that the moving position and the moving speed of the three-cavity hydraulic cylinder in the electric cylinder shell are controlled; load impact borne by the electric cylinder in the operation process is buffered by controlling pressure and flow in three cavities of the three-cavity hydraulic cylinder. The comprehensive displacement, the speed and the push-pull force of the three-cavity hydraulic cylinder and the extending piston rod can ...

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Номер записи: 15
23-06-2023 дата публикации

Compact low-power-consumption thermal mass flowmeter

Номер: CN116295680A
Автор: GUO TONG, XI JUXIU, YU YUANHUA, LIN TIANLIANG, MIAO CHENG, REN HAOLING
Принадлежит:

The invention provides a compact low-power-consumption thermal mass flowmeter, and relates to the field of flowmeters.A first annular temperature measuring mechanism, an annular heating mechanism and a second annular temperature measuring mechanism are communicated with a first fluid channel and a second fluid channel, a second fluid channel and a third fluid channel and a third fluid channel and a fourth fluid channel respectively; when fluid flows into the fourth pipeline from the first pipeline and flows out or reversely flows out, the annular heating mechanisms can heat the flowing liquid, and temperature measuring elements in the first annular temperature measuring mechanism and the second annular temperature measuring mechanism are used for collecting the temperature of the first annular temperature measuring mechanism and the temperature of the second annular temperature measuring mechanism respectively. A temperature measuring element in the annular heating mechanism collects the ...

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Номер записи: 16
11-07-2023 дата публикации

Sanitation vehicle welt cleaning path planning method, device and equipment and medium

Номер: CN116412832A
Автор: REN HAOLING, LI YUKUN, ZHANG HONGBO, QIAN CONG, HUANG QIUFANG, MIAO CHENG, YAO YU, LIN TIANLIANG, CHEN QIHUAI, FU SHENGJIE, CHEN JUNYI
Принадлежит:

The invention provides a path planning method, device and equipment for sanitation vehicle welt cleaning and a medium, and the method comprises the steps: obtaining a map of a cleaning area, and constructing a directed topological graph according to intersections and road edges on the map, the directed topological graph comprises mark nodes at the crossing positions of the road edges, edges abstracted from the road edges, and a closed graph formed by the edges and the nodes; performing operation on the directed topological graph to generate a set capable of being fully connected with the closed graphs; the current position information of the sanitation vehicle is obtained, a node sequence of global planning is generated according to the current position information and the set, the node sequence is used for local path planning, and the problem that global planning cannot completely cover all road edges is solved.

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Номер записи: 17
15-08-2023 дата публикации

Motion control method, device and equipment of crawler-type mobile machinery and medium

Номер: CN116594403A
Автор: WU JIANGDONG, REN HAOLING, LIN FANGFANG, LIU YANG, TIAN BAIYU, LIU ZIHAO, LIN TIANLIANG, MIAO CHENG, WU XIA
Принадлежит:

The invention provides a motion control method, a motion control device, motion control equipment and a motion control medium for a crawler-type mobile machine, which are characterized in that a reference path consisting of a plurality of path points is given, and a preview distance is set; and searching a path point which is closest to the preview distance from the current position of the mobile machine in the reference path, and setting the path point as a preview point. And constructing a section of arc between the mobile machine and the preview point as a real-time tracking path of the mobile machine. And controlling the speed of the left crawler belt and the right crawler belt of the mobile machine to enable the mobile machine to advance along the reference path all the time. Motion control of the crawler-type mobile machine is achieved, the problem that an existing motion control algorithm cannot be directly applied to the crawler-type mobile machine is solved, and a certain technical ...

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Номер записи: 18
14-07-2023 дата публикации

Liquid-assisted buffering electric cylinder and control method thereof

Номер: CN116436203A
Автор: CHEN QIHUAI, SHI JIARONG, ZHANG HUIYU, LIN TIANLIANG, MIAO CHENG, LIN YUANZHENG, ZHUANG RONGRONG, REN HAOLING, FU SHENGJIE
Принадлежит:

The invention provides a liquid-assisted buffering electric cylinder which comprises a hydraulic cylinder, a bidirectional variable-rotating-speed servo motor and an electric cylinder shell used for integrating the hydraulic cylinder and the bidirectional variable-rotating-speed servo motor. The rotating direction and the rotating speed of the lead screw can be controlled by controlling the rotating direction and the rotating speed of the bidirectional variable-rotating-speed servo motor, so that the moving position and the moving speed of the hydraulic cylinder in the electric cylinder shell are controlled; the displacement, the speed and the push-pull force of the extending piston rod are controlled by controlling the pressure and the flow in the two cavities of the hydraulic cylinder; the comprehensive displacement, the speed and the push-pull force of the hydraulic cylinder and the extending piston rod can be controlled at the same time by controlling the rotating direction and the ...

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Номер записи: 19
27-07-2016 дата публикации

Breaker hydraulic control system

Номер: CN0205401282U
Автор: MIAO CHENG, LIN TIANLIANG, REN HAOLING, FU SHENGJIE, CHEN QIHUAI
Принадлежит:

... 本实用新型公开了种破碎机液压控制系统，包括两个液压缸、电磁换向阀、球阀、二通调速阀、比例压力流量复合控制阀、压力继电器、风冷却器、行程开关、压力传感器和位移传感器。所述液压缸的活塞杆在各电磁阀和调速阀的控制下，按照设定的速度运行，对物料进行破碎。该破碎机液压系统能够保证冲击锤不会相互干涉、且运行频率可以调节，系统能够自动完成往复冲击破碎工作。在遇到坚硬物料情况下能自动升高系统压力，对物料进行挤压破碎，提高破碎效率。且该系统利用有限的控制阀最大限度的保证系统的正常工作，并使元器件处于间歇工作状态，提高工作可靠性，在部分元器件出现故障时，能够在不停机的情况下进行更换，提高了破碎机的工作效率。 ...

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Номер записи: 20
28-04-2023 дата публикации

Novel multi-actuator pump control variable pressure difference speed regulation system

Номер: CN116025598A
Автор: CHEN QIHUAI, GUO WENHAI, MIAO CHENG, LIN TIANLIANG, LEE JONG SHIN, FU SHENGJIE, REN HAOLING, GUO TONG, DUAN CHUANGCHUANG, FANG YANFEI, GONG WEN, YE YUEYING
Принадлежит:

The invention provides a novel multi-actuator pump-control variable-pressure-difference speed regulation system which comprises the steps that the movement working conditions and the load size of a first actuator and a second actuator are obtained correspondingly, and according to the oil port pressure, obtained by a pressure sensor assembly, of a first pump-control variable-pressure-difference speed regulation valve assembly and a second pump-control variable-pressure-difference speed regulation valve assembly, determining the working conditions of hydraulic pump motors and motor generators of the first and second pump control variable pressure difference speed regulating valve assemblies; and after the working condition is determined, according to the oil port pressure obtained by the pressure sensor assembly, the torque of the motor generators of the first and second pump-controlled variable-pressure-difference speed regulating valves and the oil inlet and outlet pressure difference ...

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Номер записи: 21
04-07-2023 дата публикации

Double-valve flow distribution four-quadrant radial plunger hydraulic device and working method

Номер: CN116378892A
Автор: GUO TONG, HUANG XIAOMIN, LUO TAO, LIN TIANLIANG, MIAO CHENG, LIU JIANPING, QUE FUMIN
Принадлежит:

The invention provides a double-valve flow distribution four-quadrant radial plunger hydraulic device, and relates to the field of radial plunger hydraulic devices. The device mainly comprises a shell, a plurality of plunger assemblies, an eccentric main shaft rotationally arranged at one end of the shell, hydraulic control one-way valves in one-to-one correspondence with the plunger assemblies, two-way cartridge valves in one-to-one correspondence with the plunger assemblies, a converging disc with a built-in reversing slide valve and a flow distribution shaft. The invention further provides a working method of the double-valve flow distribution four-quadrant radial plunger hydraulic device. By means of the radial plunger hydraulic device, bidirectional rotation can be achieved when the radial plunger hydraulic device is used as a hydraulic motor and a hydraulic pump, and the problem of limitation of application of valve flow distribution on motors is solved.

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Номер записи: 22
08-08-2023 дата публикации

Electro-hydrostatic actuator system of electric excavator and engineering machinery

Номер: CN116556465A
Автор: CHEN QIHUAI, ZHANG HUIYU, LIN TIANLIANG, LIN YUANZHENG, SHI JIARONG, MIAO CHENG, REN HAOLING, LEE JONG SHIN
Принадлежит:

The invention discloses an electro-hydrostatic actuator system of an electric excavator and engineering machinery, and relates to the technical field of actuators. The problem of heating of the motor during inverse loading can be solved. The electro-hydrostatic actuator system comprises a controller, a motor driver electrically connected to the controller, a bidirectional variable-speed servo motor electrically connected to the motor driver, an electric energy storage device electrically connected to the bidirectional variable-speed servo motor, and a bidirectional hydraulic pump in transmission connection to the bidirectional variable-speed servo motor. The three-oil-cavity symmetrical hydraulic cylinder is connected to the two-way hydraulic pump. The bidirectional hydraulic pump is provided with a first oil port and a second oil port. The three-oil-cavity symmetrical hydraulic cylinder is provided with a first oil cavity, a second oil cavity and a third oil cavity. The first oil port ...

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Номер записи: 23
29-08-2023 дата публикации

Crawler-type mobile platform and robot

Номер: CN116654134A
Автор: LIN YUANZHENG, LIN TIANLIANG, ZHENG WEIJIE, MIAO CHENG, CHEN QIHUAI, REN HAOLING, CHEN LONG
Принадлежит:

The invention provides a crawler-type mobile platform and a robot. The crawler-type mobile platform comprises a central platform and two crawler assemblies symmetrically arranged on the two sides of the central platform. The crawler belt assembly comprises a crawler belt, a fixing frame, a driving wheel, a reducing guide wheel, a luffing mechanism, a thrust wheel and an adjustable tensioning wheel mechanism; the crawler belt is jointly supported by the driving wheel, the variable-diameter guide wheel, the thrust wheel and the adjustable tensioning mechanism and forms a specific motion profile, and the shape of the front half part of the crawler belt can be flexibly changed in the advancing process by adjusting a variable-diameter fulcrum on the variable-diameter guide wheel so as to adapt to the change of various terrains; the violent bumping and vibration of the mobile platform are greatly reduced, the abrasion of parts is reduced, the service life of the whole vehicle is prolonged, and ...

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Номер записи: 24
29-08-2023 дата публикации

Negative flow system based on variable rotating speed and variable displacement and electric engineering mechanical device

Номер: CN116658493A
Автор: LIN YUANZHENG, LIN TIANLIANG, CHEN QIHUAI, MIAO CHENG, REN HAOLING, FU SHENGJIE, CHEN JUNYI, CHEN LONG, SHI JIARONG, ZHENG WEIJIE
Принадлежит:

The invention provides a negative flow system based on variable rotating speed and variable displacement and an electric engineering mechanical device. The negative flow system based on variable rotating speed and variable displacement comprises a driving motor assembly, a negative flow variable pump assembly, a multi-way valve assembly, a pilot control assembly, an actuator assembly, a flow detection assembly, a pressure sensing assembly and a control assembly. The driving motor assembly drives the negative flow variable pump assembly to supply hydraulic oil to the multi-way valve assembly, the pilot control assembly controls displacement of a valve element of the multi-way valve assembly so as to control the movement speed of the actuator assembly, and the flow detection assembly is used for detecting the oil return flow of the multi-way valve assembly and reflecting the negative flow pressure. The negative flow variable pump assembly senses the negative flow pressure and maintains the ...

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Номер записи: 25
04-04-2023 дата публикации

Radial plunger hydraulic device for controlling flow distribution of double valves by using single group of oil ways and working method of radial plunger hydraulic device

Номер: CN115898748A
Автор: GUO TONG, HUANG XIAOMIN, LIU JIANPING, LUO TAO, LIN TIANLIANG, MIAO CHENG
Принадлежит:

The invention provides a radial plunger hydraulic device for controlling double-valve flow distribution through a single-set oil way, and relates to the field of radial plunger hydraulic devices. The device mainly comprises a shell, a plurality of plunger assemblies, an eccentric main shaft rotationally arranged at one end of the shell, hydraulic control one-way valves in one-to-one correspondence with the plunger assemblies, two-way cartridge valves in one-to-one correspondence with the plunger assemblies, a valve plate and a valve end cover. The invention further provides a working method of the radial plunger hydraulic device for controlling flow distribution of the double valves through the single oil way. According to the scheme, a brand new flow distribution method is provided, benefited from the advantages of excellent sealing performance of the hydraulic control one-way valve and the two-way cartridge valve and large diameter of a valve port of the two-way cartridge valve, the radial ...

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Номер записи: 26
26-05-2023 дата публикации

Electric loader and energy recovery system and method

Номер: CN116160864A
Автор: LIN TIANLIANG, WU XIA, ZHENG WEIJIE, CHEN QIHUAI, WANG LANG, MIAO CHENG, FU SHENGJIE, GUO TONG
Принадлежит:

The invention provides an electric loader and an energy recovery system and method.A vehicle control unit recognizes deceleration, braking intention, deceleration, sliding and braking intensity of a driver through fuzzy logic reasoning according to displacement and speed of a brake pedal and an accelerator pedal, hydraulic braking pressure information and vehicle speed and synthesizes the deceleration, braking intention, deceleration, sliding and braking intensity of the driver into vehicle braking intensity; the braking force requirement of the whole vehicle is calculated according to the braking strength of the whole vehicle, front and rear wheel braking force distribution is carried out, electro-hydraulic braking force distribution is carried out according to the braking force requirement and the braking intention, and finally, front and rear shaft motors are controlled and adjusted to carry out regenerative braking through a PID control algorithm. The opening degrees of valve elements ...

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Номер записи: 27
04-07-2023 дата публикации

Trajectory tracking control method, device and equipment of full-coverage operation agricultural machine and medium

Номер: CN116382306A
Автор: TIAN BAIYU, LIN TIANLIANG, WU JIANGDONG, ZHANG CHUNHUI, MIAO CHENG, WU XIA, WU PING
Принадлежит:

The invention provides a trajectory tracking control method, device and equipment for a full-coverage operation agricultural machine and a readable storage medium, and the method comprises the steps: firstly obtaining a grid map of an agricultural machine operation region, generating a topological map based on a plurality of key corners on the grid map, and then carrying out the calculation of the topological map; obtaining agricultural machinery parameters, performing adaptive full-coverage path planning according to the agricultural machinery parameters and the topological map to generate an expected path, finally obtaining agricultural machinery pose information, and controlling the agricultural machinery to operate on the expected path according to the agricultural machinery pose information and a full-coverage path point set. The problem that an existing trajectory tracking algorithm may cause overlapping and omission of operation coverage is solved.

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Номер записи: 28
07-07-2023 дата публикации

Hinge joint-front wheel composite steering system and wheel type engineering machinery

Номер: CN116395025A
Автор: CHEN LONG, LIN TIANLIANG, LIN YUANZHENG, ZHENG WEIJIE, SHI JIARONG, MIAO CHENG, CHEN QIHUAI
Принадлежит:

The invention provides a hinge-front wheel composite steering system and wheel type engineering machinery, and relates to the technical field of steering systems, the hinge-front wheel composite steering system comprises a front frame and a rear frame, the front frame is provided with a front wheel system, and the hinge-front wheel composite steering system further comprises a composite control system; the compound control system comprises a control oil way, a control system, a first hinged steering oil cylinder, a second hinged steering oil cylinder, a front wheel steering oil cylinder and a locking oil cylinder, the invention further provides a wheel type engineering machine. According to the scheme, the steering radius of the wheel type engineering machinery can be further reduced through coupling of a hinge-front wheel steering system, and the maneuverability is further improved.

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Номер записи: 29
23-05-2023 дата публикации

Control method, device and equipment of three-rope parallel robot and storage medium

Номер: CN116141319A
Автор: REN HAOLING, LI QIANQIAN, LIN TIANLIANG, LEE JONG SHIN, MIAO CHENG, CHEN QIHUAI, GONG WEN
Принадлежит:

The embodiment of the invention provides a control method, device and equipment of a three-rope parallel robot and a storage medium, and relates to the technical field of parallel robots. The control method comprises the steps from S1 to S8. S1, acquiring an expected track sent by an upper computer; and S2, according to the expected track, the expected position of the end effector and the expected torque of the driving motor are obtained. And S3, controlling the motor to operate according to the expected torque of the driving motor. And S4, obtaining the actual torque and the actual rotating speed of the driving motor output by the motor encoder. And S5, performing proportional-integral closed-loop compensation control on the driving motor according to the actual torque and the expected torque of the driving motor. S6, integration is carried out according to the actual rotating speed of the driving motor, and the theoretical rope length is obtained. And S7, according to the theoretical ...

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Номер записи: 30
01-08-2023 дата публикации

Positioning method and device of intelligent mobile machine and readable storage medium

Номер: CN116520375A
Автор: WU JIANGDONG, REN HAOLING, LIN FANGFANG, LIU YANG, TIAN BAIYU, LIU ZIHAO, LIN TIANLIANG, MIAO CHENG, WU XIA
Принадлежит:

The invention provides an intelligent mobile machine positioning method and device and a readable storage medium, and the method comprises the steps: obtaining the current longitude and latitude height geographic position information of a mobile machine through RTK integrated navigation, and taking the first frame of longitude and latitude height geographic position information as a coordinate conversion reference origin; according to the longitude and latitude height position information, converting the longitude and latitude height geographic position information in a global geographic coordinate system into right-angle Cartesian coordinate position information in an earth-centered earth-fixed coordinate system; and converting the right-angle Cartesian coordinate position information under the earth-centered earth-fixed coordinate system into the right-angle Cartesian coordinate position information under the east-north-sky coordinate system, wherein the coordinate origin of the east-north-sky ...

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Номер записи: 31
04-07-2023 дата публикации

Intelligent mobile machine autonomous routing and obstacle avoidance method, device, equipment and medium

Номер: CN116382308A
Автор: WU JIANGDONG, REN HAOLING, LIN FANGFANG, LIU YANG, TIAN BAIYU, LIU ZIHAO, LIN TIANLIANG, MIAO CHENG, WU XIA
Принадлежит:

The invention provides an intelligent mobile machinery autonomous path-finding and obstacle-avoiding method, device, equipment and medium, and the method comprises the steps: recognizing a target object and the pose of the target object relative to a whole vehicle from a laser point cloud collected by a vehicle-mounted laser radar in real time through employing a Point Pill algorithm, and enabling the laser point cloud collected in real time to be projected into a two-dimensional cost map, and planning a global path from the current position of the whole vehicle to the position of the target object by using a mixed A * algorithm, and finally adjusting the global path in real time according to the two-dimensional cost map by using the mixed A * algorithm so as to realize the dynamic obstacle avoidance function of the whole vehicle. The problem that a traditional mobile machine mostly depends on remote control and is low in automation degree is solved, autonomous routing and obstacle avoidance ...

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Номер записи: 32
30-05-2023 дата публикации

Novel closed pump control asymmetric cylinder system of electric engineering machinery

Номер: CN116181709A
Автор: CHEN QIHUAI, ZHANG HUIYU, LIN TIANLIANG, MIAO CHENG, LIN YUANZHENG, SHI JIARONG, FU SHENGJIE, REN HAOLING, GUO TONG, JI CHANGXI
Принадлежит:

The invention provides a novel closed pump-controlled asymmetric cylinder system which can recover energy of the system under a load working condition, and the energy is generated by a bidirectional hydraulic pump motor and a bidirectional variable-speed servo motor and is supplied to an electric energy storage unit for energy storage; under the reverse load working condition, the electric energy storage unit supplies power to the bidirectional variable-speed servo motor and the bidirectional hydraulic pump motor for energy utilization. Meanwhile, the third hydraulic cavity of the asymmetric hydraulic cylinder of the system is directly connected with a small closed pump control system, energy recovery and utilization are conducted through independent control, meanwhile, the small closed pump control system can be independently driven to actively control flow and pressure to assist in controlling an asymmetric hydraulic cylinder actuator according to working conditions, and therefore the ...

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Номер записи: 33
27-06-2023 дата публикации

Buffer electric cylinder control system

Номер: CN116336029A
Автор: CHEN QIHUAI, ZHANG HUIYU, MIAO CHENG, LIN TIANLIANG, SHI JIARONG, LIN YUANZHENG, FU SHENGJIE, REN HAOLING, LEE JONG SHIN
Принадлежит:

The invention provides a buffer electric cylinder control system, which comprises a motor driving unit, a buffer hydraulic cylinder unit, a main control unit and a control valve group unit, and is characterized in that the main control unit is electrically connected with the motor driving unit and the control valve group unit; the motor driving unit is connected with the buffering hydraulic cylinder unit so as to drive the buffering hydraulic cylinder unit to move; the two ends of the buffering hydraulic cylinder unit are connected with an external load and the output end of the motor driving unit through piston rods correspondingly so that buffering can be provided for the motor driving unit. The control valve group unit is connected with the buffer hydraulic cylinder unit, and the control valve group unit is configured to be capable of automatically adjusting the buffer capacity of the buffer hydraulic cylinder unit according to the magnitude of the external load borne by the buffer hydraulic ...

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Номер записи: 34
07-07-2023 дата публикации

Electric engineering machinery multi-mode power supply system and electric engineering machinery thereof

Номер: CN116394774A
Автор: CHEN QIHUAI, ZHENG WEIJIE, MIAO CHENG, FU SHENGJIE, LIN TIANLIANG, LIN YUANZHENG, SHI JIARONG, REN HAOLING, LEE JONG SHIN
Принадлежит:

The invention provides an electric engineering machine multi-mode power supply system and an electric engineering machine thereof. The electric engineering machine multi-mode power supply system comprises a vehicle control unit, a high-voltage management unit, a power distribution cabinet, a power battery power supply assembly, a diesel engine, a range extender assembly, a transfer case assembly and a multi-actuator hydraulic assembly. The subsystems of the whole system are communicated through a CAN bus, and power input and power output of the control system are carried out through the whole vehicle control unit. Through the related functions of the system, the output current of the multi-mode power supply system can be maintained at a healthy and stable optimal value when the electrically-driven engineering machinery works in a dramatic load working condition, meanwhile, the cruising ability of the electrically-driven engineering machinery can be improved, and the stability of power output ...

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Номер записи: 35