基于PID控制的磨粒流机床液压缸压力变化的研究  

Research on Pressure Change of Hydraulic Cylinder of Abrasive Flow Machine Based on PID Control

作　　者：盛亮 李俊烨[1] 张红伟 孟文卿 何洋 李丹妮[1] SHENG Liang;LI Junye;ZHANG Hongwei;MENG Wenqing;HE Yang;LI Danni(School of Mechanical and Electric Engineering,Changchun University of Science and Technology,Changchun 130022;Changchun Equipment Technology Research Institute,Changchun 130022)

机构地区：[1]长春理工大学机电工程学院,长春130022 [2]长春设备工艺研究所,长春130012

出　　处：《长春理工大学学报（自然科学版）》2018年第6期71-75,共5页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51206011);吉林省科技发展计划资助项目(20160101270JC;20170204064GX);长春市科技发展计划资助项目(18DY017)

摘　　要：由于传统磨粒流加工机床液压控制系统的不稳定性,使得系统输出存在较大的偏差,这会导致被加工工件很难达到理想的加工效果。因此,提出基于遗传算法优化的积分分离式PID控制算法,对磨粒流机床液压缸的压力变化进行研究,可以很好的解决系统输出不稳定的问题。分别通过普通PID算法、遗传算法和经遗传算法优化后的积分分离式PID算法对磨粒流机床液压缸的压力变化情况进行分析研究,并利用MATLAB软件对液压缸压力的变化进行仿真分析。仿真结果显示,基于遗传算法优化下的积分分离式PID控制算法相比于普通PID算法,基本无超调现象的产生,系统响应时间明显缩短,能够有效提高系统的稳定性,符合磨粒流机床液压控制系统的设计要求。Because the instability of the hydraulic control system of the traditional abrasive flow processing machine,there was a large deviation in the system output which will make it difficult to achieve the desired machining effect.Therefore,in this paper,the integral separation based on genetic algorithm optimization is proposed. The PID control algorithm is used to study the pressure change of the hydraulic cylinder of the abrasive flow machine tool which can solve the problem of unstable system output. The pressure changes of the hydraulic cylinder of the abrasive flow machine tool are analyzed through the common PID algorithm,genetic algorithm and genetic algorithm optimized the integral separation PID algorithm. The MATLAB software is used to simulate the change of the hydraulic cylinder pressure and the simulation curve is obtained. The simulation results show that the integral separation PID control algorithm based on the genetic algorithm optimization is compared with Ordinary PID algorithm;there is no basic overshoot phenomenon;the system response time is significantly shortened;the stability of the system is improved in line with the design requirements of the abrasive flow machine hydraulic control system.

关 键 词：磨粒流机床 液压缸压力 遗传算法 积分分离式算法 

分 类 号：TH39[机械工程—机械制造及自动化]