电液速度伺服系统离散变结构控制的研究

Research on electrohydraulic velocity servo systems with discrete variable structure control

本文提出了一种带有积分控制的离散变结构控制方法，并应用于电液速度伺服系统。导出了滑模存在的条件、积分控制增益和期望的滑模系数。仿真结果表明：所提出的方法有效地改善了被控制系统的动态特性并对外负载干扰有明显抑制作用。

A discrete variable structure control with an integral controller is proposed and applied to an electrohydraulic velocity servo system.An procedure is developed for determining the existence condition of sliding mode,the integral control gain and desired sliding mode coefficients.Simulation results show that the proposed approach can improve the dynamic characteristics of controlled systems and reduce the effect of the external load disturbance.