摘要
液压伺服系统中存在非线性、参数变化、外负载干扰等问题,这些特点和问题很大程度上影响了液压伺服系统的性能。传统的PID控制在解决高精度非线性控制问题时效果不理想,一种模糊自适应PID控制方法被提出。针对液压阀控非对称缸系统,该文分析并建立了阀控非对称缸位置控制系统的动态数学模型。基于MATLAB仿真软件,将传统PID控制策略与模糊自适应PID控制策略分别应用于阀控非对称缸的位置控制中,进行仿真研究。仿真实验结果表明,采用模糊自适应PID控制器系统能克服传统PID控制器的局限性,且具有较强的鲁棒性,较好的动态品质以及较高的控制精度。
The hydraulic servo system has the problems of nonlinear,parameter change and external load interference.The performance of the hydraulic servo system is greatly influenced by these characteristics and problems.Traditional PID control is not ideal when solving high-precision nonlinear control problems.A fuzzy adaptive PID control method is proposed.For the hydraulic valve-controlled asymmetric cylinder system,the dynamic mathematical model of valve-controlled cylinder position control system was analyzed and established in this paper.Based on the MATLAB simulation software,the traditional PID control strategy and the fuzzy adaptive PID control strategy are applied to the position control of the valve controlled asymmetric cylinder respectively,and the simulation is carried out.The results of simulation experiments show that the adoption of fuzzy self-adaptive PID controller can overcome the limitations of traditional PID controller,and it has strong robustness,good dynamic quality and high control precision.
作者
赵国新
吕文洋
刘昌龙
陈志炼
ZHAO Guoxin;LV Wenyang;LIU Changlong;CHEN Zhilian(College of Information Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China;College of Information Science&Technology,Beijing University of Chemical Technology,Beijing 100029,China)
出处
《工业仪表与自动化装置》
2019年第2期3-7,共5页
Industrial Instrumentation & Automation
基金
国家自然科学基金(51405023)
