The innovation of a variable structure control system-a striking fact about how A.I. can help system

The paper attempts to show how through artificial intelligence (AI) techniques such as knowledge based production systems etc., together with some novel ideas about making use of variable structure controllers (VSC), an innovative variable structure control system with better performance could be built. The system identifies online, the control characteristics related tightly to switching surfaces. With the aid of AI techniques and a novel approach of using each control mode according to the needs decided by judgement from the obtained control characteristic information, the system can be operated in a more favorable manner. Such an innovative variable structure controller (IVSC) would act more intelligently in dealing with plant/system with significant uncertainty, nonlinearity and other undesired properties for control. It can alleviate the chattering problem, and at the same time retain fast response, good robustness and disturbance rejection. The benefits achieved in IVSC are proved by computer simulation results