摘要
液压伺服系统广泛存在着非线性、强耦合、时滞等现象。并随着液压伺服系统复杂度增加,控制系统要求越来越高,传统的液压伺服控制策略(如PID)的控制性能很达到系统的要求。针对液压阀控非对称缸系统,首先分析并建立了阀控缸位置控制系统的动态数学模型。之后,引入改进型无模型自适应控制器,基于MATLAB仿真平台对该系统实现位置控制。仿真结果表明,相比较于传统PID控制器,改进型无模型自适应控制器的控制效果更为优越,在保证系统稳定性的前提下提高了系统输出响应速度。
Hydraulic servo system is prevalent in nonlinear,strong-coupling,time delay and so on. With the increasing complexity of the hydraulic servo system,the requirements of the control system are higher and higher. It is difficult to meet the requirements of the system by using the conventional hydraulic servo control strategy,such as PID. The mathematical model of hydraulic servo position control system is analyzed and deduced. Then,based on MATLAB,improved model free adaptive control is introduced in the hydraulic servo position control system and the position control of this system is accomplished. Simulation results shows that compared with the traditional PID controller,the control effect of the improved model free adaptive controller is more superior,on the premise of ensuring the stability,the control accuracy and the adjusting speed is enhanced.
作者
刘昱
王安
王展鹏
刘昌龙
LIU Yu;WANG An;WANG Zhan-peng;LIU Chang-long(College of Information Engineering, Beijing Institute of Petrocliemical Teclinology, Beijing 102617,Cliina;College of Information Science & Teclinology, Beijing University of Cliemical Teclinology, Beijing 100029, China)
出处
《机械设计与制造》
北大核心
2019年第5期10-13,共4页
Machinery Design & Manufacture
基金
国家自然科学基金(51405023)
