泵阀联合EHA鲁棒增益调度分级压力控制  

Pump and Valve Combined EHA Robust Gain Scheduling Multistage Pressure Control

作　　者：刘霄 张振 李海军 LIU Xiao;ZHANG Zhen;LI Hai-jun(School of Computer and Control Engineering,Yantai University,Yantai 264006,China;School of Coastal Defense,Naval Aeronautics and Aviation University,Yantai 264001,China)

机构地区：[1]烟台大学计算机与控制工程学院,山东烟台264006 [2]海军航空大学岸防兵学院,山东烟台264001

出　　处：《中北大学学报（自然科学版）》2018年第4期426-432,共7页Journal of North University of China(Natural Science Edition)

基　　金：山东省科技厅科技攻关资助项目(2016GGX109004);山东省自然科学基金资助项目(ZR2016FM42);山东省自然科学基金资助项目(ZR2017FM019)

摘　　要：针对泵阀联合电静液作动器(EHA)分级压力控制带来系统特性改变的问题,提出了一种鲁棒增益调度的控制方法.该方法依据不同泵源压力把泵阀联合EHA分为不同的工作模式,在每种工作模式下,采用改进粒子群优化(PSO)算法的PID控制器作为初始控制器,以克服定量反馈理论(QFT)初始控制器设计的盲目性,然后在QFT框架下基于参数不确定范围和性能指标要求对系统进行整形设计.为削弱不同工作模式切换瞬间引起的抖动,引入模糊控制,将每种工作模式下控制器的输出作为输入建立模糊切换控制器.仿真结果表明在分级压力下系统性能得到改善且实现了不同工作模式切换的平稳过渡.Aiming at the problem of the system dynamic characteristic is worsened which is caused by pump and valve combined electro-hydrostatic actuator（EHA）multistage pressure control,a robust gain scheduling control method is proposed in the paper.Pump and valve combined EHA is divided into different working modes based on the different pump source pressure,adopts improved particle swarm optimization（PSO）algorithm PID controller as initial controller to overcome blindness for quantitative feedback theory（QFT）,then adopts QFT shaping design base on the uncertainty rang and the performance indexes under each working mode.Fuzzy control is introduced to reduce the chatter which is caused by the switch during the different working modes,taking the outputs of each working modes controller as the input and building the fuzzy switching controller.The simulation results show that the system characteristic is improved under multistage pressure control and the switching can be smoothed during different working modes.

关 键 词：泵阀联合电静液作动器 分级压力 粒子群优化 定量反馈理论 模糊控制 

分 类 号：TH137[机械工程—机械制造及自动化]