圧延制御装置、圧延制御方法及び圧延制御プログラム

METHOD AND DEVICE FOR AUTOMATIC CONTROLLING AND METHOD AND DEVICE FOR CONTROLLING PLATE THICKNESS

PURPOSE: To improve the accuracy of a feed forward type plate thickness control. CONSTITUTION: A pattern recognition part 10 being constituted by a neural net work with a time series data indicating a drawing down position command △Sref to a drawing down position control device 7, is allowed to learn, and a coincidence with a drawing down position command △Sref is checked by making a time series data indicating an actual drawing down position △Sfb the input of a pattern recognition part 10. A delay time from △Sref of a time series data with a high coincidence is found as td, and an output control signal from a FFAGC operating part 9, is allowed to precede by this td. Consequently, the delay time td can be automatically detected by the neural net work, and an optimum control delay time can be given according to the states of a rolling mill and stocks to be rolled. COPYRIGHT: (C)1994,JPO&Japio ...

METHOD AND DEVICE FOR CONTROLLING ROLLING

PROBLEM TO BE SOLVED: To absorb variation in the sheet velocity of a rolled material caused by the eccentricity of a reel to minimize affection given to an exit-side sheet thickness. SOLUTION: A control device of a rolling mill is equipped with the tension reel for winding off or up the rolled material on at least one of the rolling mill and an entry side or exit side of the rolling mill. In the control device, a reel eccentricity removing roll 21 is provided for applying pressing force to the rolled material between the rolling mill and the tension reel. Pressing force applied to the reel eccentricity removing roll is adjusted on the basis of a difference from a reference position of the reel eccentricity removing roll and a tension set value set at the tension reel to suppress tension variation to the rolled material accompanying a variation in the winding-off or winding-up velocity of the rolled material which is caused by the eccentricity of the rolled material wound around the tension ...

DISTRIBUTION TYPE FUEL INJECTION PUMP

PROBLEM TO BE SOLVED: To prevent seizure of a distribution shaft fitted so as to slidably rotate to a hydraulic head of a distribution type fuel injection pump in an oil-sealed manner by providing a space for interrupting transmission of internal stress between the shaft and a female thread hole of delivery holder formed in the vicinity of the shaft, between the shaft and the hole. SOLUTION: In a distribution type fuel infection pump, three delivery holders are arranged around a distribution shaft 5 in the case of three cylinders while four delivery holders are arranged therearound in the case of four cylinders. High pressure fuel oil is fed to each holder and also high pressure fuel oil is fed to the shaft 5 and a barrel of the shaft 5. A vertical groove 22 is formed between a female thread hole 1a of a hydraulic head 1 into which a delivery holder is screwed and a distribution shaft hole 1b into which the shaft 5 is accommodated so as to rotate freely, and the groove 22 serves as a stress ...

プラント制御装置、プラント制御方法及びプラント制御プログラム

誘導電動機の制御装置及び誘導電動機の制御方法

誘導電動機の制御装置及び誘導電動機の制御方法

PROCESS CONTROL UNIT

PROBLEM TO BE SOLVED: To perform operation with high productivity by deriving a rule corresponding to information generated during a process out of a new operation rule storage part and determining the control contents of a plant by using the derived rule. SOLUTION: Through a network, exhaustive process information on plant equipment 100 always flows, and this information is stored in a process data gathering and storing part 101. To make good use of regularity, useful for the improvement of productivity, which is embedded in the stored process data, this control unit is provided with an operation rule storage part 103 which stores rules regarding the plant equipment 100 and an operation rule execution part 104 which determines operation by using those rules. A process analysis part 102 derives a rule from the stored process data by using data mining technology and stores it in the operation rule storage part 103. The rule derived by the process analysis part 102 is applied to data generated ...

DISTRIBUTION TYPE FUEL INJECTION PUMP

PROBLEM TO BE SOLVED: To easily demount a high-pressure pipe and a delivery valve by mounting the high-pressure pipe reaching the fuel injection valves, on a position separated from a plug, in a distribution type fuel injection pump where a gauge mounting part is installed on an upper edge in the sliding direction, of a plunger of the fuel injection pump, and closing the same by the screwing of the plug. SOLUTION: On the arrangement of a dial gauge G to be screwed on an upper face of a hydraulic head 1, three delivery valves 6 are projected on an position around a distribution shaft, and high-pressure pipes 26 are respectively connected with the delivery valves 6. A plug is mounted on a position bypassing the positions of the delivery valves 6 and the high-pressure pipes 26, and the dial gauge G is mounted after the plug, is demounted. By positioning the delivery valves 6, the high-pressure pipes 26 and the plug separately from each other, the mounting and demounting work can be improved ...

圧延装置およびその制御方法

FUEL INJECTION PUMP

PROBLEM TO BE SOLVED: To removably mount a feed pump, as an assembly, from a fuel injection pump. SOLUTION: In the fuel injection pump 1 mounted to a diesel engine, the feed pump 45 is removably mounted in an assembly state on the injection pump 1 from an external part. A suction route of fuel to the feed pump 45 and a discharge route of the fuel from the feed pump 45 are formed in a body of the fuel injection pump 1. COPYRIGHT: (C)2002,JPO ...

圧延制御装置、圧延制御方法および圧延制御プログラム

圧延制御装置、圧延制御方法及び圧延制御プログラム

CONTROL AND INFORMATION PROCESSING SYSTEM AND DECISION DEVICE

PURPOSE: To provide the control system which employs the know-how of skilled operators and is rich in expandability. CONSTITUTION: A controlled system includes plural actuators and is controlled by an actuator controller G6 which generates control execution commands by the actuators. The system consists of a command generating mechanism which finds similarities to previously stored patterns by using plural output signals of a detecting device G14 inputted by an optimum decision device G13 as patterns, determines manipulated variables to the respective actuators on the basis of the similarities, and generates command signals to the actuator controller G6 and an instructing device G16. COPYRIGHT: (C)1996,JPO ...

ROLLING EQUIPMENT AND CONTROLLING METHOD THEREFOR

PROBLEM TO BE SOLVED: To provide a rolling equipment capable of improving a sheet thickness accuracy and a tension accuracy and a controlling method therefor. SOLUTION: The control device of the rolling equipment outputs the speeds of an entrance side bridle roll and the like to respective speed operation ends based on the rolling result obtained from the entrance side bridle roll, an exit side bridle roll, a plurality of rolling machine stands, speed control devices therefor, the sheet thickness detector and tension detector of a material to be rolled, the detected sheet thickness of the material to be rolled and the detected tension of the material to be rolled. Further, a reference speed operation end setting device sets the reference speed operation end which does not give a correction value in speed control so as to minimize a speed correction value on each speed operation end based on the rolling state including the sheet thickness, tension, sheet thickness control and tension control ...

ROLLING MILL CONTROLLER, METHOD AND PROGRAM FOR CONTROLLING ROLLING MILL CONTROLLER

PROBLEM TO BE SOLVED: To raise the operation efficiency in the releasing and clamping of rollers without damaging a material to be rolled and work rollers. SOLUTION: This rolling mill controller S includes: a product specification information storing means 42 for storing the product specification of the material h to be rolled; a mill stand operation state obtaining means 41 for obtaining the operation state information of mill stands 1, 2; a weld point passing method determining means 44 for determining either of screw-down or released state of the mill stand before and after a weld point is passed; a target value of weld point passing time setting means 46 for setting the control target value of the gap between work rollers 1w, 2w before and after the passing; a weld point passing treating timing setting means 45 for setting the releasing and clamping timing of the work rollers before and after the passing; a reference stand setting means 48 for determining one the speed of which is taken ...

METHOD AND APPARATUS FOR CONTROLLING ROLLING MILL

PURPOSE: To suitably control disturbance even when a delay occurs in each actuator by detecting, storing the fluctuation of a plate thickness on the inlet of a mill and operating the hysterisis of a future fluctuation for feed-forward control. CONSTITUTION: The rolling-down position of a rolling stand 1, the rotating speed of a roll, the metal sheet thickness on the outlet side, the rear tension are detected by a state detector 3 to be inputted into a feedback control part 5. In this time, a control gain is set in accordance with a gain setting evaluation index inputted from an input part 10 in a gain setting part 7 and sent to the feedback control part 5. On one hand, the fluctuation of the sheet thickness on the inlet side of the mill is detected by an inlet side sheet thickness detector 4 and inputted into a sheet thickness storing part 8 on the inlet side at every prescribed sampling time to be stored as the future hysterisis. The sheet thickness data corresponding to predicted time ...

DEVICE AND METHOD FOR CONTROLLING AND DEVICE AND METHOD FOR CONTROLLING ROLLING MILL

PURPOSE: To independently and optimally realize plural control performance specifications such as robust stability, an external diffusion removing characteristic, etc., by operating the actuater operation quantity of a control object from the internal state quantity of a control response specification function specified based on frequency characteristic. CONSTITUTION: A rolling mill 1 being a controlled system is operated by two actuaters of a velocity controller 2-2 and a rolling reduction controller 2-1. A rolling reduction position, a rolling velocity, a rear tension and the board thickness on an output side, which are the state quantity of the rolling mill 1, are measured by a state measuring instrument 3. The plate thickness on the output side and a target plate thickness set corresponding to it are inputted to a board thickness response setting function 7 and the tension detected from a tension measuring part 3-3 and a target tension are inputted to a tension response setting function ...

DISTRIBUTION TYPE FUEL INJECTION PUMP

PROBLEM TO BE SOLVED: To smoothly feed fuel of an attendantly arranged fuel pump to feed fuel to a distribution type fuel injection pump, in the distribution type injection pump for a diesel engine internal combustion engine. SOLUTION: In constitution wherein a fuel pump is arranged in the fuel suction route A of a distribution type fuel injection pump, a check valve CV is arranged at a fuel inlet part from the fuel pump to the distribution type fuel injection pump. A plate-form valve element is used in the check valve CV and the check valve CV is formed integrally with a fuel inlet pipe joint part 21. Further, a restriction part S is arranged at a fuel outlet part. COPYRIGHT: (C)1999,JPO ...

圧延制御装置、圧延制御方法および圧延制御プログラム

MESSAGE TRANSMISSION SYSTEM

PROBLEM TO BE SOLVED: To obtain a message transmission system, enabling a person for requesting service to be served without simply waiting for on a place for providing service by notifying available service starting time, including the time required for movement for receiving service to the person waiting for the execution of service. SOLUTION: A computer system 1 determines the service schedule time of each service providing system 8 and evens providing schedule time by taking into account service time by an FIFO, while referring to a user data base 15 for an owner of a portable terminal 6 who registered the reservation of service of the system 8. A service progress management system 16 determines notification time from positional relation between the system 8 and the user based on the service shedule time, and when it arrives at the notification time, executes notification. Consequently, a user can save simple waiting time for receiving service from registration time and effectively ...

METHOD FOR CONTROLLING ROLLING FOR TANDEM ROLLING MILL

PROBLEM TO BE SOLVED: To control a load balance minimizing the disorder of a plate thickness by minimizing the change of a draft schedule, which becomes a disturbance to the plate thickness on the outlet side of a final stand. SOLUTION: A present rolling state (motor power, etc.) of each rolling stand is detected, and the degree of the abnormality of a present load unbalance is operated from an error to a target load (motor power, etc.) balance. And also, the degree of the abnormality of a future load unbalance is operated according to a forecast rolling state after an acceleration and a forecast model with the forecast rolling state subsequent to a present rolling part based on an actual result in a previous process, from the present rolling state and a set speed (the maximum speed of the motor, a rolling speed calculated from the motor power in an initial setting draft). According to the degree of the abnormality of the present load unbalance, the degree of the abnormality of the future ...

ADAPTIVE CONTROL METHOD/DEVICE

PURPOSE: To always control a controlled system having the large time fluctuation of its control characteristic in an optimum control system and with an optimum control constant. CONSTITUTION: The state of a controlled system 1 is diagnosed by a diagnostic mechanism 8 based on the state value of the system 1 detected by a sensor 2. Based on this diagnostic result, a generalization mechanism 10 sets a control model, the target value, a control parameter, etc., to a set-up control mechanism 6 and a feedback control mechanism 5. Thus these control mechanism drive an actuator 3 to control the system 1. In such a constitution, the system 1 is controlled by an optimum control model and an optimum control parameter accordant with the state of the system 1. Then the control performance is improved and also the damage of equipment can be reduced. COPYRIGHT: (C)1994,JPO&Japio ...

CONTROL METHOD AND ITS DEVICE

PURPOSE: To improve the set-up control accuracy for deciding an action point for the satisfactory control of a controlled system having high nonlinearity and to ensure the satisfactory control of the controlled system. CONSTITUTION: A command is issued to an actuator 2 for controlling a controlled system 1 so that the system 1 has a desired operation. Meanwhile the relation between each parameter value of a model 5 of the system 1 and the input/output value of the model 5 is secured by a learning mechanism 11. This learning result is stored in a memory 20. Then the parameter value of the model 5 is decided based on the input/output measurement value of the system 1 and by making reference to the learning result stored in the memory 20. Then a command is produced based on the parameter value and given to the actuator 2. COPYRIGHT: (C)1994,JPO&Japio ...

HYDRAULIC ROLLING-REDUCTION CONTROL DEVICE, AND ADJUSTING METHOD AND CONTROL PROGRAM OF THE SAME

PROBLEM TO BE SOLVED: To provide a hydraulic rolling-reduction control device capable of obtaining a favorable control response without considerably impairing the rate of operation of the control device. SOLUTION: A rolling mill machine includes a hydraulic rolling-reduction control device 2 which acquires the actual measurement value of the position of a piston in a hydraulic cylinder 11, and controls the hydraulic pressure based on the command value and the actual measurement value, a control gain adjustment device for adjusting the control gain of the hydraulic rolling-reduction control device 2, and a rolling mill state determination unit 5 for determining the operational state of the rolling mill. When the rolling mill is in a predetermined state, the control gain adjustment device 4 outputs the adjustment signal in which the position command value is oscillated at the stored frequency to the hydraulic rolling-reduction control device 2 when executing the adjustment of the control ...

圧延制御装置及び圧延制御方法

DEVICE AND METHOD FOR CONTROLLING SHAPE OF ROLLING EQUIPMENT

PROBLEM TO BE SOLVED: To optimally control the shape of rolling equipment by separating a fundamental control component which is controllable with a mechanical actuator and non- fundamental control component which is difficult to control, calculating the fundamental component as the waveform of a controllable shape corresponding to every actuator, determining the degree of correlation between a fundamental shape waveform and a measured shape waveform and deciding the manipulated variable of each actuator. SOLUTION: A rolling mill 1 has an actuator group of controllers for the opening degree of roll, rotational speed of roll and bending force and roll shifting device or the like and detector group for the actuators. The controllable shape waveform is calculated for every actuator based on the input from a setup computer 7 with a basic waveform arithmetic unit 4. This shape waveform is compared with an output waveform of a shape detector 3 with a waveform correlation arithmetic unit 5, the ...

CONTROL SYSTEM AND CONTROL METHOD OF HYDRAULIC ROLLING-REDUCTION CONTROL DEVICE

PROBLEM TO BE SOLVED: To improve convenience of a user without increasing a load on a service provider when adjusting a control gain in a hydraulic rolling-reduction control device. SOLUTION: A system includes a hydraulic rolling-reduction control device 2 for controlling the hydraulic pressure of a hydraulic cylinder 11 for adjusting the spacing between work rolls of a rolling mill, and a control server 20 connected thereto via a network. The system further includes a control gain adjustment device 4 which acquires the actual measurement value of the position of a piston of the hydraulic cylinder 11, and adjusts the control gain when the hydraulic control device 12 controls the oil inflow amount, databases 23, 24 for storing adjustment timing information for determining adjustment timing of the control gain in the control server 20, and an adjustment method selection device 6 for instructing execution of the adjustment of the control gain to the control gain adjustment device 4 based on ...

INJECTION TIMING CONTROL MECHANISM OF FUEL INJECTION PUMP

PROBLEM TO BE SOLVED: To solve a problem such that a conventional fuel injection pump requires two-stage machining, and much machining time with complicated work, to result in high cost, when a sub lead for providing a desired injection timing characteristic is formed at the of a plunger. SOLUTION: The tip of the plunger 7 is notched to form the sub lead 51 capable communicating with a barrel part 36 over a predetermined range depending on rotation of the plunger 7. A sub lead 51 shape on the outer peripheral surface of the plunger 7 contacting with the barrel port 36 comprises a first tilting edge 52a for increasing communication area between the sub lead 51 and the barrel port 36 with rotating of the plunger 7 to the high load side, and a second tilting edge 53a for decreasing the communication area between the sub lead 51 and the barrel port 36 with rotating of the plunger 7 to the high load side. The first tilting edge 52a is disposed on the low load side, and the second tilting edge ...