System and method for testing effectiveness of transformer winding material detection device

The invention relates to the crossing field of distribution transformer winding material identification and automation, in particular to a system and a method for testing effectiveness of a transformer winding material detection device. The system comprises a carrying module, a sample module, a temperature acquisition module, a thermoelectric force acquisition module, a signal acquisition module, a vision module, a heating module, a heat dissipation module, an analysis module, a control module, a motion module and a plurality of wires. According to the transformer winding material detection system, the visual module, the motion module and the control module interact; the control module is used for controlling the working states of the temperature acquisition module, the thermoelectric force acquisition module, the heating module and the heat dissipation module, so that intelligent automatic control of use validity detection of hardware and software of the transformer winding material detection ...

水槽滤网

Molecular sieve runner purification system

The invention discloses a molecular sieve rotating wheel purification system. The purification system comprises a desorption air pipe and a molecular sieve rotating wheel, the wheel core is vertically arranged in the airflow circulation direction of the desorption air pipe; the adjusting assembly is arranged in the desorption air pipe, the adjusting assembly comprises a first driving part, a push rod and a grating part, the grating part can be telescopically deformed to adjust the gas flow area, the first driving part comprises a pressure control assembly, and the pressure control assembly comprises a first pressure sensor and a second pressure sensor. And the molecular sieve rotating wheel purification system can be matched with air pressure in the desorption air pipe so as to be in linkage fit with the grating part through the push rod.

Wind power plant post-evaluation method based on wind resource and unit generating capacity analysis

The invention provides a post-field evaluation method for a low-efficiency wind turbine generator. An in-service wind power plant post-evaluation method based on wind resource and unit generating capacity analysis comprises the steps that a low-efficiency unit is determined through actual wind field wind resource and unit generating capacity analysis, correlation analysis is conducted on the hub height of a wind turbine generator and the related wind speed, conversion of the incoming flow wind speed of a draught fan in the height direction is conducted, and the wind power generation capacity of the low-efficiency unit is obtained; power analysis and consistency judgment are carried out in the actual operation process, the converted average wind speed and the actually measured average are further discussed, low-efficiency units in a target wind power plant are further analyzed, the wake effect and the influence of the terrain are considered, and the accuracy of the method is verified by ...

SMART DEVICE-BASED PAYMENT PLATFORM SYSTEM AND PAYMENT METHOD

Provided are a smart device-based payment platform system and payment method; by means of a coordination of a smart device with an external mPOS, and with the aid of the strong processing capacity of the smart device, a good user interface, remote communication capacity, and commercial mPOS secure payment capacity, mPOS and transaction communication costs are reduced, the application of digital signatures is further integrated, and transaction printing costs are lowered. The design of the functions of remote download of the terminal master key and remote update of apps reduces operation and maintenance costs. Merchants are provided with a low-cost, secure mobile payment solution with service management application and electronic payment application integration and information flow and resource flow integration.

Application of lysophosphatidylinositol in preparation of cumulus oocyte complex culture system

The invention provides application of lysophosphatidylinositol in preparation of a cumulus-oocyte complex culture system, and belongs to the technical field of cumulus-oocyte complex culture. According to the invention, it is proposed for the first time that lysophosphatidylinositol is added into a culture solution of a cumulus-oocyte complex, so that the active oxygen level of cumulus granular cells can be reduced, the expansion of the cumulus-oocyte complex can be enhanced, the expression of genes related to follicle maturation can be improved, and an ERK1/2 signal channel for ovum maturation development can be activated. According to the cumulus-oocyte complex culture system with the anti-oxidation effect, the oxidation state of a cumulus-oocyte complex can be improved, and then the success rate of in-vitro fertilization-embryo transplantation is increased.

Drilling equipment and method for thermal insulation construction of outer wall body in glass curtain wall construction

The invention discloses drilling equipment and method for outer wall heat preservation construction in glass curtain wall construction, the drilling equipment comprises a cart (1) and a drilling machine (17), the cart (1) is provided with a gantry (2), the gantry (2) is internally provided with an adjusting mechanism for adjusting the position of the drilling machine (17), a protection mechanism is arranged below the drilling machine (17), and the drilling machine (17) is provided with a drilling mechanism. By the adoption of the drilling equipment and method for heat preservation construction of the outer wall body in glass curtain wall construction, drilling of the outer wall body can be completed indoors, the construction efficiency can be improved, and the construction risk can be reduced.

SUSTAINED-RELEASE MIXED SOLUTION USED FOR ESTABLISHING MOUSE MODEL OF ENDOMETRIOSIS, PREPARATION METHOD THEREFOR, AND METHOD FOR ESTABLISHING MOUSE MODEL

Provided are a sustained-release mixed solution used for providing an exogenous estrogen support when establishing a mouse model of endometriosis, a preparation method therefor, and a method for establishing a mouse model. The sustained-release mixed solution comprises: 0.5-1.0 g/ml of an estrogen powder, the rest being a temperature-sensitive hydrogel. The preparation method comprises the following steps: 1) extracting a temperature-sensitive hydrogel from a refrigerator and dissolving the hydrogel into a transparent liquid at room temperature; 2) adding an estrogen powder to the hydrogel; 3) placing on a shaker and shaking to fully mix the estrogen powder with the hydrogel; 4) placing in a refrigerator for storage after packing. The method for establishing a mouse model comprises the steps of obtaining an inner membrane of a donor mouse, surgically transplanting into a recipient mouse, and injecting the sustained-release mixed solution subcutaneously into the back of the recipient mouse ...

シート仕分け装置およびシート処理装置

Portable cable fault live detection and positioning device

The invention provides a portable cable fault live-line detection and positioning device. The portable cable fault live-line detection and positioning device comprises a detection and positioning device and a signal coupler, the detection positioning device comprises a suitcase, and a bottom plate, a battery, a mainboard, a shielding box, a panel and a tablet computer which are mounted in the suitcase, the bottom plate is mounted at the bottom of the suitcase; the battery and the shielding box are fixed on the bottom plate, and the mainboard is fixed in the shielding box; the panel is mounted above the shielding box, and the tablet computer is fixed on the panel; and the signal coupler is a pair of clamping type inductive couplers which are clamped on the cable to be detected and are in signal connection with the detection positioning device. The system has the advantages of online detection, non-contact, high accuracy, good real-time performance, strong anti-interference capability and ...

Carry on one's shoulder or back electric flow straightener and electric precipitation defroster in advance

... 本实用新型公开了种预荷电均流装置及电除尘除雾器，该预荷电均流装置包括均流板和电晕放电的放电部件，所述均流板包括板本体，所述板本体上设置有供烟气通过的若干通道，所述板本体与地面、烟气流动方向均垂直，并且所述放电部件设置于所述均流板的后方，所述均流板与所述放电部件形成电场；均流板在具有均流作用的同时，又兼具极板功能，不仅可以减少进口均流区的长度，又可以提高电场区的除尘除雾效果，进而提高电除尘除雾器的整体除尘除雾效果。 ...

SCRAPING TOOL FOR SCRATCHING SCRATCH CARD

A scraping tool (10) for scratching a scratch card (20), the tool being used to scrape off a sealing coating on a scratch card (20) and comprising a first scraper (100) and a second scraper (200). The first scraper (100) has a first scraping edge (110). The second scraper (200) is stacked with and secured to the first scraper (100) and has a scraping blade part (210). The scraping blade part (210) has a second scraping edge (211). The second scraping edge (211) is misaligned with the first scraping edge (110), and the length (L1) of contact between the first scraping edge (110) and the sealing coating of the scratch card (20) is less than the length (L2) of contact between the second scraping edge (211) and the sealing coating of the scratch card (20).

Distribution transformer winding heating and cooling device and method based on vortex tube

The invention relates to a vortex tube-based distribution transformer winding heating and heat dissipation device and method, and aims to solve the problems that in the prior art, when a dry-type distribution transformer winding is detected, a winding terminal is heated in an induction mode, and after heating is completed, body heat dissipation is carried out on an induction heating tube through water, so that the detection time is shortened. The next group of windings can be heated only after heat dissipation is completed, so that the efficiency is low; meanwhile, induction type heating is adopted, so that the problem of relatively strong electromagnetic interference is solved. Comprising a movable base, a horizontal workbench, a supporting arm, a heating mechanism, a heat dissipation mechanism and a vortex tube. High-pressure gas is introduced into the vortex tube, after the high-pressure gas enters the vortex tube, cold air is generated at one end of the vortex tube, hot air is generated ...

Movable coal plough board of scraper conveyor

... 一种刮板输送机活动式犁煤板，包括犁煤板本体，在犁煤板本体上设有实现快速安装定位犁煤板本体的2个定位螺栓，在犁煤板本体的头端设有防煤炭碰撞机构，所述防煤炭碰撞机构包括通过连接板与犁煤板本体固定相接的防撞块，在防撞块上设有提高煤炭撞击承受力的碰撞斜面，在防撞块的底部设有向外伸出破碎大块煤炭的破碎头。本实用新型利用犁煤板本体上的2个定位螺栓，可实现犁煤板本体安装定位，并通过4组连接螺栓组与垫板连接，实现活动装拆，缓冲垫板与挡煤板焊接，犁煤板本体与连接螺栓组承担大部分应力，这样，实现了独立部分更换代替整体机构的维修与更换，提升了犁煤板本体的使用寿命，满足了产品质量要求。 ...

Data interaction method based on multi-party security computing

The invention discloses a multi-party security computing-based data interaction method, which comprises the following steps of: setting a security computing environment, adopting a security data sandbox and other technologies, encrypting data of a data model test environment, a data sandbox and the like, ensuring that transaction data application, processing, development, use and other processes are available and invisible, setting a multi-party security computing MPC (Maximum Power Computing), and implementing multi-party security computing. And data sharing protection. According to the data interaction method based on multi-party security computing, a plurality of service systems (namely, data owners) complete respective result computing and analysis at an edge (MPC node), computing results are output to a data interaction platform through the edge, the data interaction platform integrates and computes the results of multiple parties, and then the results are used by a result demander ...

High-argillaceous lead-zinc oxide ore flotation combined regulator and application method thereof

The invention discloses a high-argillaceous lead-zinc oxide ore flotation combined regulator and an application method thereof. The combined regulator is composed of a regulator A and a regulator B according to a mass ratio of 1: (3-10); the regulator A is a macromolecular polysaccharide substance; the regulator B is prepared from the following components in parts by mass: 80 to 90 parts of B1 and 10 to 20 parts of B2; b1 is sodium silicate, and B2 is at least one of polyamino polyether methylene phosphoric acid, polyepoxysuccinic acid and 2-phosphonobutane-1, 2, 4-tricarboxylic acid. The application method comprises the following steps that raw ore is levigated, sodium carbonate, the regulator A, the regulator B and sodium sulfide are sequentially added for size mixing, finally, the collecting agent is added for zinc oxide mineral flotation, and zinc oxide rough concentrate is obtained. According to the method, the zinc oxide mineral in the high-argillaceous lead-zinc oxide ore can be ...

Intra-crown guide plate device for rear teeth

The invention discloses an intra-crown guide plate device for rear teeth, and relates to the technical field of oral cavity auxiliary medical instruments. The guide plate comprises a guide plate body, an opening is formed in the guide plate body, a fixing column is fixed to the top end of the guide plate body and located on the outer side of the opening, and a guide accessory is installed on the guide plate body; the guiding accessory comprises a guiding channel, a fixing nail and a supporting plane, the supporting plane is fixed to the top of the guiding channel, the fixing nail is arranged in the supporting plane, and the fixing nail corresponds to the fixing column in position. The goals of increasing the vertical distance of the back teeth and increasing the operation space of an operation area are achieved by extending the guide channel into the dental crown, a doctor can conveniently use a bur or an ultrasonic tip to carry out preparation and dredging, and the goals of sectional preparation ...

Wet cleaning assembly and automatic cleaning equipment

The utility model provides a wet type cleaning assembly and an automatic cleaning device, the wet type cleaning assembly comprises a power mechanism, the power mechanism comprises a motor and a power transmission device, the motor is connected with the power transmission device during forward rotation and reverse rotation, and the power transmission device is connected with the power transmission device during forward rotation of the motor. The power transmission device simultaneously drives at least two of the cleaning head, the water supply mechanism and the water return mechanism in the wet cleaning assembly to synchronously move; according to the power mechanism, a plurality of devices can be driven by a single motor, so that the complexity of the power mechanism is greatly reduced, the cost is reduced, and meanwhile, the reliability of the power mechanism is improved.

Business push and calibration parameter acquisition method and device

The invention provides a service pushing method and device and a calibration parameter obtaining method and device. The service pushing method comprises the steps of obtaining a calibration parameter corresponding to a target class cluster; the calibration parameter corresponding to the target class cluster is determined based on a statistical value of a service index of first sample service data of the target class cluster and an estimated value of a service index of second sample service data of the target class cluster; the class cluster to which the second sample service data belongs is determined based on a calibration tree, and the calibration tree is generated based on the first sample service data of the plurality of class clusters; calibrating the business index of the target business data of the target class cluster based on the calibration parameter corresponding to the target class cluster; the target business data and the second sample business data are business data in the ...

Cooking equipment

The invention relates to a cooking appliance for automatically cooking a dish, comprising: a cooking vessel (120) for cooking a contained food material; the food material putting mechanism (140) comprises at least one food material storage area (142) used for storing food materials, and the food material storage areas (142) can be communicated with the cooking container (120) in turn through rotation of the food material putting mechanism (140) according to selection, so that the stored food materials can be provided for the cooking container (120).

Cardboard T is hung

... 本实用新型公开了种卡板丁字吊，包括：底板，其由体成型的对第部分和位于所述对第部分之间的第二部分组成，所述第二部分的水平长度小于所述第部分的水平长度以使所述底板呈端具有凹槽的U形结构；吊耳板，其由体成型的上部分和下部分组成，所述上部分设有吊耳孔，所述下部分为长方体结构，所述下部分与所述第二部分垂直固接以使所述吊耳板与所述底板垂直固接；顶板，其端与所述吊耳板的下部分固接，另端沿所述第部分的长度方向延伸且具有内螺纹孔，所述内螺纹孔位于所述凹槽的正上方；紧固件，其与所述内螺纹孔螺纹连接以使得所述紧固件与所述底板垂直设置。本实用新型的卡板丁字吊结构简单、省时省力，适用性广。 ...

Distribution transformer winding heating and cooling device and method based on heat energy recovery

The invention relates to a device and a method for heating and radiating a distribution transformer winding based on heat energy recovery, which are used for solving the problems that the whole process is long in duration, low in efficiency and easy to cause winding damage when a dry-type distribution transformer winding is detected by adopting a heating sheet for heating and naturally radiating. Comprising a movable base, a horizontal workbench, a supporting arm, a semiconductor refrigerator, a cold storage device and a heat transfer assembly. Heat is generated through the hot face of the semiconductor cooler, the heat pipe transmits the heat to a wiring terminal of the distribution transformer, after the temperature of the wiring terminal reaches a specified value, a winding of the distribution transformer is detected, after detection is completed, the semiconductor cooler is closed, heat conduction is stopped, and the distribution transformer is cooled. And then air is blown to the wiring ...

Glass installation auxiliary device of building aluminum alloy glass curtain wall and installation method of glass installation auxiliary device

The invention discloses a glass installation auxiliary device for a building aluminum alloy glass curtain wall and an installation method thereof.The glass installation auxiliary device comprises a cart (1) and a glass suction cup (9), a lifting mechanism is arranged on the cart (1), and a first adjusting mechanism and a second adjusting mechanism which are used for adjusting the position of the glass suction cup (9) are arranged on the lifting mechanism; by means of the glass installation auxiliary device of the building aluminum alloy glass curtain wall, curtain wall glass can be conveniently installed, and the working efficiency can be improved.

Injection molding and coating integrated process for automotive upholstery

The invention discloses an injection molding and coating integrated process for automotive upholstery, which comprises the following steps: S1, performing injection molding on ABS (Acrylonitrile Butadiene Styrene) hard rubber to prepare a framework, and trimming flashes; s2, spraying is conducted on the framework after trimming, and then cooling is conducted for standby application; s3, the sprayed and cooled framework is put into an interior trim part injection molding grinding tool, PPT soft rubber is heated to be molten and injected into a mold cavity, a soft coating layer is formed on the framework through pressure maintaining and cooling, and a double-layer structure is formed; s4, directly carrying out secondary spraying under the condition that the double-layer injection molded part is not completely cooled, and then cooling to prepare a semi-finished product interior trim part; and S5, trimming, correcting and detecting the semi-finished interior trim part to prepare the automotive ...

Differential power feedback and low-pass inertia method for solving transient problem of virtual synchronous machine

The invention relates to the technical field of power electronic converters, in particular to a differential power feedback and low-pass inertia method for solving the transient problem of a virtual synchronous machine, and the method comprises the steps: obtaining the active power flow power and the reactive power flow power outputted by an inverter of the virtual synchronous machine; performing small signal linearization processing on the active power flow power and the reactive power flow power to obtain an accurate small signal relational expression of the virtual synchronous machine; establishing a small signal model of the virtual synchronous machine by using the accurate small signal relational expression; and suppressing transient oscillation of the virtual synchronous machine by adopting differential power feedback and a low-pass inertia strategy according to the small signal model. According to the invention, the fluctuation and change of the output active power of the virtual ...

Defogging method for icing wind tunnel test image

The invention relates to a defogging method for an icing wind tunnel image. The defogging method comprises the following steps: 1) acquiring a fog-containing test image through an icing wind tunnel test section monitoring camera; 2) estimating atmospheric light intensity A by using a dark channel; 3) acquiring a scene depth map d corresponding to the image captured by the camera at the current moment; 4) establishing a linear regression model between the beta and the LWC, and performing fitting by using a data set to obtain a prediction model M; 5) predicting a beta value under the current test condition by using the regression model M; and 6) solving the defogged image J through an atmospheric scattering model. According to the method for estimating the parameter beta in the atmospheric scattering model through the wind tunnel test parameters, compared with random value obtaining, fixed value obtaining and other methods in the prior art, the scattering rate beta estimation better conforming ...

Virtual synchronous machine dynamic performance improvement method based on preposed proportional differential control

The invention relates to the technical field of power electronic converters, in particular to a virtual synchronous machine dynamic performance improvement method based on front proportional differential control, and the method comprises the steps: obtaining the active and reactive power flow power outputted by an inverter of a virtual synchronous machine; performing small signal linearization processing on the active power flow power and the reactive power flow power to obtain an accurate small signal relational expression of the virtual synchronous machine; establishing a small signal model of the virtual synchronous machine by using the accurate small signal relational expression; adding a front proportional differential error controller and a low-pass filter into the small signal model; and the dynamic performance of the virtual synchronous machine is improved through the front proportional differential error controller and the low-pass filter. According to the method, the front proportional ...

Rainwater collection and utilization system based on permanent and temporary combined outdoor rainwater pipe network

The rainwater collection and utilization system comprises rainwater wells and a water room, the rainwater wells are communicated through rainwater pipes, a water lifting tank is fixedly erected in the water room, a water collection tank is buried below the water room, and the top of the water collection tank is in through connection with the rainwater pipes through a gathering pipe; a rotating seat is fixedly connected to the top surface of the water chamber, a rotating ring is rotatably connected to the interior of the rotating seat, a stand column rod is fixedly mounted on the top surface of the rotating ring, a top box is fixedly mounted on the top surface of the stand column rod, a crankshaft is rotatably connected to the interior of the top box through a rotating connecting seat, and the other end of the crankshaft penetrates through the top box and is fixedly connected with windmill blades; the surface of the crankshaft is rotationally sleeved with a lantern ring, and the surface ...

Beneficiation method for high-mud lead-zinc oxide ore through graded size mixing-mixed hydrophobic floc carrier flotation

The invention discloses a beneficiation method for high-mud lead-zinc oxide ore through graded size mixing-mixed hydrophobic floc carrier flotation. The beneficiation method comprises the following steps that (1) ore grinding is conducted; (2) sulphide ore flotation; 3) flotation of lead oxide; (4) grading and size mixing; and 6) zinc oxide flotation. Aiming at recovery of zinc oxide minerals in lead-zinc oxide ores with high mud content and high oxidation rate, hydrophobic flocculation of coarse-fraction minerals and fine-fraction minerals is realized by utilizing surface hydrophobic force of the coarse-fraction minerals and the fine-fraction minerals after size mixing respectively, so that comprehensive recovery is realized. According to the method, the influence of high-content argillization gangue can be overcome, the adaptability is high, the grade and the recovery rate of zinc oxide concentrate are high, and efficient flotation recovery of zinc resources can be achieved.

Road disease identification method, medium and system

The invention discloses a road disease identification method, a medium and a system. The method comprises the following steps: respectively calculating through a first calculation equation of obvious degree values of different types of road diseases to obtain obvious degree values corresponding to disease areas in an obtained stacking oscillogram of the road diseases; dielectric constants corresponding to disease areas in the collected radar maps of the road diseases are calculated through second calculation equations of dielectric constants of different types of road diseases; respectively calculating the absolute value of the difference value between the obvious degree value and the dielectric constant of the same type; and identifying that the type of the road disease is the type corresponding to the minimum absolute value. The disease type is determined by comparing the obvious degree value of the disease with the dielectric constant, so that the dielectric constant of the disease is ...

Unmanned aerial vehicle hydrophobic test platform to insulator

... 本实用新型公开了种针对绝缘子的无人机憎水试验平台，包括飞行器，连接在飞行器下方的脚架，所述飞行器可悬停在铁塔绝缘子旁侧，在所述脚架上固定有水泵、与水泵进水口连接的水箱、与水泵出水口连接的喷杆，喷杆的出水口正对飞行器飞行的正前方；水泵内设有控制水泵开启的驱动电源，还包括有控制驱动电源的遥控开关；在飞行器机头可调的固定有拍摄装置，还包括有用于操作拍摄装置的控制开关。无人机作业则易于携带及回收，无疑具有快速、安全、高效等特点，特别符合实际应用需求，能够降低绝缘子憎水试验的人工作业成本与提高作业安全系数，使用无人机技术将有效提高野外憎水试验作业效率，并降低安全风险。 ...

Pavement disease identification method, medium and system

The invention discloses a pavement disease identification method, medium and system, and the method comprises the steps: employing a pre-obtained training sample set to train an inversion model used for identifying a disease in a pavement radar map, and enabling the number of cycles of the training process to be determined by the number of A-scan channels at the disease part in a pavement radar map sample included in the training sample set; and using the trained inversion model to identify the disease in the road radar map. According to the invention, a complex radar image can be identified, the disease position and size can be directly identified from the radar image, and the application capability of the ground penetrating radar in actual road detection is improved.

Laryngeal vibration electric shock equipment for language recovery and use method thereof

The invention discloses laryngeal vibration electric shock equipment for language recovery and a use method thereof.The laryngeal vibration electric shock equipment comprises a half-ring-shaped wearing ring and two quarter-ring-shaped clamping rings, the clamping rings are arranged at the two ends of the wearing ring respectively, and a plurality of silica gel sheets distributed at intervals are embedded into the inner ring face of the wearing ring; the outer surface of the silica gel sheet is flush with the inner ring surface of the wearing ring, an assembly groove is formed in the ring body, corresponding to the middle of the inner surface of the silica gel sheet, of the wearing ring, a vibration motor assembly is installed on the wearing ring through the assembly groove, an installation groove is formed in the front side of the upper end of the silica gel sheet, and an electric shock sheet is installed on the silica gel sheet through the installation groove. In the application process ...

Bandwidth increasing method under bidirectional charging pile virtual synchronous machine direct current voltage stabilization architecture

The invention relates to the technical field of electric vehicle bidirectional charging piles, in particular to a bandwidth increasing method under a bidirectional charging pile virtual synchronous machine direct current voltage stabilization framework, and aims to solve the problem that the bandwidth of a bidirectional charging pile virtual synchronous machine is insufficient under low dynamic response caused by insufficient bandwidth of an active control loop of the bidirectional charging pile virtual synchronous machine in the prior art. The method comprises the following steps: obtaining a small signal model of an active control loop of the virtual synchronous machine of the bidirectional charging pile; and according to the small signal model, performing order reduction on a closed-loop transfer function between a power instruction and output power by using forward channel filtering and parallel feedforward, thereby improving the bandwidth of an active control loop in the bidirectional ...

Two-in-one HUD product production test equipment

The utility model relates to two-in-one HUD product production test equipment which comprises a rack arranged on a machine table, a test bin is arranged in the rack, a test mechanism is arranged in the test bin, a panel is arranged on the front side of the test bin, door opening areas are arranged on the left side, the right side and the rear side of the test bin respectively, and a display area, a keyboard area, a printing area and a control and indication area are arranged on the panel respectively. A safety door is arranged on the left side of the middle of the panel, and grating protectors are arranged on the two sides of the safety door. The testing mechanism comprises a windshield, a fixing mechanism for fixing the windshield, a to-be-tested HUD product and a supporting mechanism for supporting the to-be-tested HUD product, the fixing mechanism is arranged on the pulley mechanism, the supporting mechanism is arranged on the movement mechanism, and the fixing mechanism and the pulley ...

Series lead-lag method for solving transient characteristic problem of virtual synchronous machine

The invention relates to the technical field of power electronic converters, in particular to a series lead-lag method for solving a transient characteristic problem of a virtual synchronous machine, which is used for suppressing oscillation of output active power and oscillation of output frequency of the virtual synchronous machine caused by instruction power fluctuation or external frequency fluctuation in a transient state. The transient performance of the virtual synchronous machine is improved. The method comprises the following steps: obtaining active power flow power and reactive power flow power output by an inverter of the virtual synchronous machine; performing small signal linearization processing on the active power flow power and the reactive power flow power to obtain an accurate small signal relational expression of the virtual synchronous machine; establishing a small signal model of the virtual synchronous machine by using the accurate small signal relational expression ...

Assembled operation platform

... 本实用新型公开了一种组装式操作平台，用于高空对接作业，包括：第一扁担梁和第二扁担梁，其均可拆卸固定于钢梁上方，且受到钢梁的支撑，所述第一扁担梁与所述第二扁担梁间隔一定距离设置；第一爬架和第二爬架，所述第一爬架的上端与所述第一扁担梁可拆卸固定，所述第二爬架的上端与所述第二扁担梁可拆卸固定；网状走道，其两端分别与所述第一爬架和所述第二爬架可拆卸固定，以形成水平的人行走道。本实用新型使用安全、安拆方便、不同结构尺寸形式通用性强。 ...

Method, device and equipment for determining actual size of disease

The invention provides a method, device and equipment for determining the actual size of a disease, and the method comprises the steps: obtaining an actual disease radar map of a test road based on a radar detection result of the test road; on the basis of the disease position and size in the test road, forward modeling parameters are set, and a disease forward modeling map is obtained; drawing a disease color pixel map by taking the actual disease radar map as a reference; constructing an evolution model from the actual disease radar map to the disease color pixel map through the disease forward modeling map; and inputting an actual disease radar map of a to-be-tested road into the evolution model, and obtaining a target disease color pixel map corresponding to the to-be-tested road. The method belongs to the field of road exploration, the road is subjected to radar detection, the color pixel map of the road disease is obtained, the actual size of the invisible disease in the road can ...