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An electro-hydraulic actuator control system

An electro-hydraulic actuator and control system technology, which is applied to fluid pressure actuation system components, servo meter circuits, mechanical equipment, etc., can solve the problems of low control accuracy and wide range of temperature applications, and ensure work stability Effect

Active Publication Date: 2020-04-28
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an electro-hydraulic actuator control system to solve the problems of low control accuracy and wide application range of temperature in the electro-hydraulic actuator control system in the prior art

Method used

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  • An electro-hydraulic actuator control system
  • An electro-hydraulic actuator control system
  • An electro-hydraulic actuator control system

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Experimental program
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Effect test

Embodiment 1

[0060] In this embodiment, an electro-hydraulic actuator control system is disclosed, which is used to generate the execution volume control action system according to the control signal of the communication system. The control system includes a power supply module, a signal acquisition module, a signal processing module and a drive module ;

[0061] The electro-hydraulic actuator is used to perform actions according to the control signal sent by the on-site control host, generally a PLC host. Generally speaking, the execution action is the action of a hydraulic cylinder. That is to say, in this embodiment, the PLC on-site control host sends the control signal to For electro-hydraulic actuators, generally speaking, the control signal is the displacement of the hydraulic cylinder, and the control displacement is sent to the electro-hydraulic actuator. The electro-hydraulic actuator acts according to the control displacement. Therefore, the electro-hydraulic actuator needs to inc...

Embodiment 2

[0123] In this embodiment, an accuracy test is carried out on an electro-hydraulic actuator control system provided by the present invention, and the test is divided into normal temperature test and high and low temperature test.

[0124] Combining the electro-hydraulic actuator control system provided by the present invention with the PID control method of the existing electro-hydraulic actuator control system, the normal temperature test process is:

[0125] Step 1: Power on the equipment, set the output force; power on the control system of the electro-hydraulic actuator, operate the keyboard to set the control parameters, including the control accuracy;

[0126] Step 2: Set the minimum speed of the motor, the maximum speed of the motor (can not exceed the rated speed); set the parameters such as system position and signal;

[0127] Step 3: Use a standard signal source to simulate the DCS to set the target position, the controller responds to the signal and adjusts the actu...

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Abstract

The invention discloses an electro-hydraulic actuator control system. The electro-hydraulic actuator control system comprises a power module, a signal collecting module, a signal processing module anda driving module. According to the power module provided by the invention, the alternate current side is subjected to overcurrent protection through a fuse, a surge suppressor achieves lightning protection and surge protection, an alternating current filter achieves the alternate current side filtering function, then, AC-DC switching is achieved through a linear power circuit, a direct current power source is input into a direct current filter to achieve the filtering and signal stabilizing functions and is converted into a plurality of direct current power sources through a DC-DC and voltageadjusting device, a power source system applied to complex working conditions is formed, and a stable work power source is provided for the electro-hydraulic actuator control system.

Description

technical field [0001] The invention relates to an electric control device, in particular to an electro-hydraulic actuator control system. Background technique [0002] Electro-hydraulic actuator is a direct-drive electro-hydraulic servo system, also called valveless servo control system. It controls the displacement, speed and direction of movement of the hydraulic cylinder by controlling the speed and steering of the AC servo motor, so as to achieve large thrust, High speed motion control. [0003] At present, intelligent electro-hydraulic actuators only have mature products abroad, such as REXA in the United States and KOSO in Japan. Mature products and mature technologies have been formed, and the performance indicators have not yet surpassed the actual indicators of foreign products. [0004] At present, the electro-hydraulic actuator products of the American REXA company represent the world's advanced level, but among the mainstream REXA products sold in China, the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B21/08
CPCF15B21/087F15B2211/20515F15B2211/20538F15B2211/60F15B2211/6656
Inventor 田中山井健赖少川董珊珊杨昌群张书荣刘维国徐中节
Owner CHINA PETROLEUM & CHEM CORP
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