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PID (proportion integration differentiation)-regulation-based double-closed loop electro-hydraulic servo control device

A technology of electro-hydraulic servo and control devices, which is applied in the direction of fluid pressure actuation devices, fluid pressure actuation system components, mechanical equipment, etc., and can solve the problems of limited applicability and single function

Active Publication Date: 2013-12-18
嘉兴亿恒测试技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing servo control devices (including servo controllers) only perform closed-loop control on the level of the servo valve, and do not control the cylinder connected to the servo valve, so the functions are relatively single and the applicability is not wide

Method used

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  • PID (proportion integration differentiation)-regulation-based double-closed loop electro-hydraulic servo control device
  • PID (proportion integration differentiation)-regulation-based double-closed loop electro-hydraulic servo control device
  • PID (proportion integration differentiation)-regulation-based double-closed loop electro-hydraulic servo control device

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Embodiment Construction

[0016] refer to figure 1 , figure 2 , image 3 It can be seen that a double closed-loop electro-hydraulic servo control device based on PID adjustment in the present invention includes an outer loop PID adjustment module, an outer loop feedback conditioning circuit, an inner loop PID adjustment module, an inner loop feedback conditioning circuit, a power amplifier circuit, and an outer loop PID adjustment circuit. The adjustment module includes an outer loop zero bias circuit, an outer loop deviation calculation circuit, an outer loop PID adjustment unit, and an outer loop summing circuit. The outer loop deviation calculation circuit is connected with the outer loop zero bias circuit, the outer loop PID adjustment unit, and the outer loop feedback conditioning Circuit connection, the outer loop PID adjustment unit is connected with the outer loop summation circuit, the inner loop PID adjustment module includes the inner loop zero bias circuit, the inner loop deviation calcul...

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Abstract

The invention relates to an electro-hydraulic servo control device, in particular to a PID (proportion integration differentiation)-regulation-based double-closed loop electro-hydraulic servo control device, which comprises an outer-loop PID regulation module, an outer-loop feedback conditioning circuit, an inner-loop PID regulation module, an inner-loop feedback conditioning circuit and a power amplification circuit, wherein the outer-loop PID regulation module is connected with the outer-loop feedback conditioning circuit and the inner-loop PID regulation module respectively; the inner-loop PID regulation module is connected with the inner-loop feedback conditioning circuit and the power amplification circuit respectively. According to the device with the structure, a double-closed loop control structure is arranged, the outer-loop feedback conditioning circuit and the inner-loop feedback conditioning circuit are connected with an external sensing part respectively when the device is used, and two closed loop structures can be used for meeting the control requirements of a tertiary servo valve, and simultaneously achieving compatibility with a secondary servo valve which can be controlled in a single-loop way, so that the applicability is improved; due to the adoption of a PID regulation technology, the dynamic response and the stability of a system are improved.

Description

technical field [0001] The invention relates to an electro-hydraulic servo control device, in particular to a double-closed-loop electro-hydraulic servo control device based on PID regulation. Background technique [0002] Electro-hydraulic servo system The electro-hydraulic servo system is a feedback control system composed of an electrical signal processing device and a hydraulic power mechanism. The most common are electro-hydraulic position servo system, electro-hydraulic speed control system and electro-hydraulic force (or torque) control system. [0003] In the existing technology, electro-hydraulic servo control technology is an important component of modern control technology, and because it has the advantages of fast dynamic response, high control precision and long service life, it is widely used in aerospace, shipbuilding, chemical and industrial production, etc. field has been widely used. The electro-hydraulic servo controller is an indispensable control unit ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B21/08
Inventor 贺惠农邱宏亮
Owner 嘉兴亿恒测试技术有限公司
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