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Servo controller and electrohydraulic servo system

A servo controller and control loop technology, applied in the field of servo control, can solve the problems of poor interchangeability, low degree of automation, complicated modification of control parameters, etc., and achieve high precision, simple and flexible adjustment, and strong real-time and interchangeability. Effect

Active Publication Date: 2011-03-30
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiment of the present invention is to provide a servo controller, aiming to solve the problems of low automation, cumbersome modification of control parameters and poor interchangeability of current servo controllers

Method used

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  • Servo controller and electrohydraulic servo system
  • Servo controller and electrohydraulic servo system
  • Servo controller and electrohydraulic servo system

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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0015] In the embodiment of the present invention, the servo controller adopts a proportional-integral-derivative-feedforward (Proportion-Integral-Derivative-Feedforward, PIDF) control algorithm through the three-loop control of speed, displacement and force to realize displacement or force for the hydraulic servo unit. Closed-loop control.

[0016] Fig. 1 shows the structural principle of the electro-hydraulic servo system provided by the embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown.

[0017] A...

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PUM

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Abstract

The invention is applicable to the servo control filed and provides a servo controller and an electro-fluid servo system. The servo controller comprises a closed-loop control unit used for adopting the PIDF control algorithm to generate driving signals according to the received control signals and feedback signals, a servo valve driving unit used for controlling the movement of an external servo device according to the driving signals generated by the closed-loop control unit, a single chip setting unit used for conducing the parameter setting on the closed-loop control unit, and a power supply unit used for supplying the power to the closed-loop control unit, the servo valve driving unit, and the single chip setting unit. In the invention, the closed-loop control unit adopts the PIDF control algorithm, a PID adjuster is utilized to realize the automatic control gain, the single chip setting unit is utilized to simply, flexibly, and precisely adjust the gain parameters, Therefore, thereal-time performance and the interchangeability of the servo controller are improved.

Description

technical field [0001] The invention belongs to the field of servo control, in particular to a servo controller and an electro-hydraulic servo system. Background technique [0002] The electro-hydraulic servo technology is widely used. As the control nerve center of the entire electro-hydraulic servo system, the servo controller is the key to whether the electro-hydraulic servo system can work reliably and safely. At present, the commonly used servo controllers are mostly analog controllers, with a low degree of automation, cumbersome modification of control parameters, and no visibility of the electro-hydraulic servo system. In addition, the controller is sensitive to the control object, and is often a set of hydraulic servo units. A set of controllers has poor interchangeability, especially the force control circuit is particularly sensitive to the load, which requires a high technical level for the technical personnel who adjust the parameters. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418G05B11/32G05B11/42
CPCY02P90/02
Inventor 庞雷苏茂田
Owner BYD CO LTD