离散变结构控制的新方法及其在液压伺服系统中的应用

通过对离散变结构控制进行深入研究，针对伺服系统特点，提出了一种新的变结构控制策略－－ＩＶＳＣ。它由积分控制和变结构控制复合而成，因此当系统存在外部干扰和参数变化时仍可获得准确的跟踪性能和良好的鲁棒性，应用所提出的控制策略对泵控马达速度伺服系统进行控制的数字仿真和实验表明，控制效果是相当满意的。

A NEW DISCRETE VARIABLE STRUCTURE CONTROL METHOD AND ITS APPLICATION TO HYDRAULIC SERVO SYSTEM

By means of thorough investigation into discrete variable structure control, aiming at the special requirement of servos, a new kind of sliding control-IVSC is put forward.It comprises an integral controller followed by a variable structure controller, so the system can acquire an accurate servotracking property and fair robust to parameter variations and external disturbances. The digital simulation and experiment of a pump-controlled-motor velocity servo system using the control law presented shows that the control effect is quite satisfactory.