TRACKING VARIABLE STRUCTURE CONTROL LAW WITH APPLICATION TO ELECTRO-HYDRAULIC SERVO SYSTEMS

摘要

Combining the characteristics of servo systems, tracking variable structure control law is studied. Two kinds of new variable control law, the generalized exponential approaching variable structure control law and the integral variable structure control law are put forward for discrete time domain. Taking pump-controlled-motor rotational speed servo system for example, the experiment investigation and digital simulation of integral variable structure control law for discrete time domain are performed, the rightness of conclusions are verified.