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A Semi Physical Simulation of Electro-hydraulic Driving Force Servo System Control Strategy(PDF)

《哈尔滨理工大学学报》[ISSN:1007-2683/CN:23-1404/N]

Issue:
2016年06期
Page:
73-78
Research Field:
机械动力工程
Publishing date:

Info

Title:
A Semi Physical Simulation of Electro-hydraulic Driving Force Servo System Control Strategy
Author(s):
HAN Gui-huaCUI YanYU Feng-li
(School of Mechanical & Power Engineering, Harbin University of Science and Technology, Harbin 150080, China)   
Keywords:
force servo system model identification the hybrid fuzzy PID controller the semi-physical simulation self-tuning modifying factor 
PACS:
TP273
DOI:
10.15938/j.jhust.2016.06.014
Abstract:

The identification model of electro-hydraulic force servo system was obtained by using the model identification test in the semi physical simulation environment.In order to improve the control performance of the electro-hydraulic force servo system,a hybrid fuzzy PID controller was designed.This controller has combined the advantages of the classical PID controller and the fuzzy controller with self-tuning modifying factor,and added a feed-forward correction.In order to avoid the bad disturbance caused by swiching between the two kinds of control modes,the fuzzy switching method was adopted.The semi physical simulation experiment of the hybrid fuzzy PID controller was carried out on the electro hydraulic servo test bench,and compared with the control experimental curve of the traditional fuzzy controller and PID controller,The feasibility and control performance of the hybrid fuzzy PID controller were verified.At the same time,The semi-physical simulation experiment was carried out when the load stiffness and the mass were change.The experimental results show that,the hybrid fuzzy PID controller not only improves the stability and speed,and has good real-time performance.

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Last Update: 2017-02-28