电液负载敏感-变转速复合流量调节与模糊PID控制  

Composite Flow Regulation and Fuzzy PID Control of Electro-Hydraulic Load Sensitive System with Variable Motor Speed

作　　者：贺国平[1] 闫雨朋 仉志强[2] 武永红 张宝成 HE Guoping;YAN Yupeng;ZHANG Zhiqiang;WU Yonghong;ZHANG Baocheng(Computer Department,Xinzhou Normal University,Xinzhou Shanxi 034000,China;School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan Shanxi 030024,China;Taiyuan Heavy Machinery Group Yuci Hydraulic Industry Co.,Ltd.,Jinzhong Shanxi 030600,China)

机构地区：[1]忻州师范学院计算机系,山西忻州034000 [2]太原科技大学机械工程学院,山西太原030024 [3]太重集团榆次液压工业有限公司,山西晋中030600

出　　处：《机床与液压》2024年第16期93-98,共6页Machine Tool & Hydraulics

基　　金：山西省科技创新人才团队专项(202304051001033)。

摘　　要：针对伺服电机驱动的电液变量泵系统,提出一种负载敏感-变转速的复合流量调节策略,设计模糊PID控制器,采用电控方式实现变压差负载敏感控制。采用AMESim-Simulink软件建立仿真模型,搭建试验平台并进行试验。研究结果表明:与PID相比,模糊PID具有更快的响应速度,更小的超调量。与单负载敏感流量调节相比,复合流量调节策略的流量调节范围提高36%,流量超调量减少20%;主控制阀开口为阶跃信号时,全流量(7~81 L/min)调节的上升时间约0.5 s,下降时间约0.2 s,与单负载敏感流量响应时间基本一致。The composite flow regulation strategy of load sensitive and variable speed was proposed for the servomotor-driven electro-hydraulic variable pump system.The fuzzy PID controller was designed to achieve the load-sensitive control with variable differential pressure through electric control mode.The co-simulation model was established using AMESim-Simulink software,the test platform was built and the test was conducted.The results indicate that the fuzzy PID controller exhibits a faster response speed and smaller overshoot compared to the PID controller.Additionally,the composite flow regulation strategy enhances the flow regulation range by 36%and reduces the flow overshoot by 20%compared to the single load-sensitive flow regulation.Under the step signal of the main control valve opening,the rise time of full flow(from 7 L/min to 81 L/min)regulation for the composite flow regulation is 0.5 s and the fall time of that is 0.2 s,which are similar to those of the single load-sensitive flow regulation.

关 键 词：负载敏感 模糊PID 变压差 AMESim-Simulink联合仿真 

分 类 号：TH137[机械工程—机械制造及自动化]