doi:10.16186/j.cnki.1673-9787.2020.1.11

Received:2019/04/13

Revised:2019/05/14

Published:2020/01/15

Design of fuzzy PID controller for lifting system based on LinWPSO algorithm

LIU Xin, CAI Gaipin, LUO Xiaoyan

School of Mechanical & Electrical Engineering， Jiangxi University of Science & Technology， Ganzhou 341000 ， Jiangxi， China

Abstract:WK-35 large-scale excavator was unstable when its upper and lower were being separating， and the lifting synchronization error was large. A multi-cylinder synchronous lifting fuzzy PID control method based on LinWPSO algorithm was proposed to obtain a more accurate lifting control system. The synchronous accuracy requirements of the jacking system was verified by geometric analysis and calculation. The control strategy combining particle swarm optimization algorithm with fuzzy PID was proposed， and then the fuzzy PID synchronous lifting controller whose performance parameters was optimized by the LinWPSO algorithm was designed. Based on the hydraulic system of WK-35 large excavator， the AMEsim model of hydraulic system was established. Combined with the Simulink control part model， the joint simulation was carried out. The results of joint simulation showed that compared with fuzzy PID control， the control accuracy of the improved control method was obviously improved， which met the synchronization requirements of the system. The engineering test of synchronous lifting of WK-35 excavator by separating the upper and lower plates was carried out， and it showed that the experimental results were in agreement with the simulation results. The feasibility of the proposed method was verified.

Key words:synchronous lifting;fuzzy PID control;LinWPSO algorithm;joint simulation

基于LinWPSO算法的同步顶升系统模糊PID控制器设计_刘鑫.pdf