高速大惯性液压伺服系统高精度控制研究  

Research on High-Precision Control for Hydraulic Servo System with High Speed and Large Inertia

作　　者：周开[1] 李维嘉[1] 

机构地区：[1]华中科技大学船舶与海洋工程学院,湖北武汉430074

出　　处：《计算机仿真》2015年第12期187-191,共5页Computer Simulation

基　　金：国家科技支撑计划(2012BAF02B01)

摘　　要：高速大惯性液压伺服系统由于本身存在的低频及大延迟等特性难以实现高精度控制。以一种高速大惯性液压伺服系统为研究对象,针对系统所要求的高速高精度控制,通过对电液比例阀控缸系统的详细分析,并根据其数学模型提出了采用速度及加速度前馈的分区变参数PID控制的方法,最后采用AMESim及Matlab/Simulink搭建联合仿真模型进行仿真。仿真结果表明,前面提出的控制方法不仅具有较好的综合性能,并且显著提高了系统的定位精度和响应速度。改进控制方法较好实现大惯性系统的高速高精度控制,为实际系统的设计提供了参考。Since the characteristics of low frequency and large delay in the hydraulic system with big inertia inher- ent and high speed, it is difficult to achieve the high precision control. In this research, a kind of hydraulic servo system with high speed and large inertia was taken as the research object, and the electro - hydraulic proportional valve controlled cylinder system was analyzed in detail to get the mathematical model of hydraulic system. According to the mathematical model, the partition variable parameter PID control method was proposed based on the velocity and acceleration feed -forward. Then AMESim and Matlab/Simulink were used to build the joint simulation model for the hydraulic servo system for the simulation analysis. The simulation results show that the control method put for- ward in this research not only has good comprehensive performance, but also significantly improves the positional accuracy and response speed for the system. The control with high speed and high precision for the large inertia system can be achieved by the control method. And the reference is also provided for the design of the practical system.

关 键 词：大惯性 高精度 比例阀 分区变参数控制 位置控制 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]