电液速度伺服系统中GS非线性积分器的应用

A Nonlinear Integrator in Electro-hydraulic Velocity Servo System

目的设计一种称为GS积分器的非线性积分器,探讨此积分器对电液速度伺服控制系统的动态校正的作用.方法分析电液速度伺服控制系统使用常规的线性积分校正动态特性和控制精度的效果;构造GS非线性的积分器,分析GS非线性的积分器的特性,模拟仿真GS非线性的积分器对电液速度伺服控制系统的动态校正的作用和效果.结果GS非线性积分器对电液速度伺服系统及类似的控制系统超调量和稳定误差有着显著的改善,效果明显.GS非线性积分器对电液速度伺服系统及类似的控制系统的校正补偿作用要好于常规积分器校正,可以在较大的范围内保证系统稳定.结论模拟仿真表明此方法可以使系统控制精度有较大提高,且使系统动态特性显著改善.

In an electro- hydraulic velocity servo system, due to the constructive feature of the system, it is a 0 model system in which steady error is not put out and responding feature is not good. This system can not work out a better dynamic feature and a less controll steady error to use a classic linear integrator to improve it. In this paper a new nonlinear integrator called GS nonlinear integrator has been worked out. The simulation result shows that the nonlinear integrator can simultaneous make the control steady with less error and the dynamic feature better,