Design of servo hydraulic PID control system based on least square method

doi:10.16731/j.cnki.1671-3133.2018.11.024

Modern Manufacturing Engineering ›› 2018, Vol. 458 ›› Issue (11): 136-141.doi: 10.16731/j.cnki.1671-3133.2018.11.024

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Design of servo hydraulic PID control system based on least square method

Liu Jiangwen¹, Zhou Jianming²

1 School of Mechanical and Electrical Engineering,Jiangsu Architecture Career Technical College, Xuzhou 221116,Jiangsu,China;
2 School of Information Science and Technology,Beijing Institute of Technology,Beijing 100081,China

Received:2017-04-06 Online:2018-11-20 Published:2019-01-07

Abstract

Abstract: In order to effectively solve the problems of high system control complexity and volumetric flow rate dynamics caused by the application of hydraulic transmission system,design a highly efficient and stable servo hydraulic PID control system based the least squares hydraulic control model.Firstly,aiming at the valve control loss and volume instability under high power load,combined with the least squares fitting of the sensor control vector,a hydraulic control model based on the least squares method is proposed;then,throught the cross-cylinder is used to push the module in combination with the mixing crankshaft and the hydraulic pressure sensor, design the servo group hydraulic pressure PID control system transmission group,and established the servo hydraulic pressure PID control system.Finally,throught the field test and experimental analysis show that the designed servo-hydraulic PID control system has good performance in reducing the valve displacement,the output hydraulic pressure jitter,the number of sensor failures,and improving the volumetric efficiency of the hydraulic pump.

Key words: Proportional Integral Derivative (PID) controller, least square method, position mapping distribution, hydraulic control system

CLC Number:

TP319

Liu Jiangwen, Zhou Jianming. Design of servo hydraulic PID control system based on least square method[J]. Modern Manufacturing Engineering, 2018, 458(11): 136-141.

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Design of servo hydraulic PID control system based on least square method

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