Research On Intelligent Variable Structure Control And Applications Based On Matlab Semi-Physical Simulation Platform

Variable structure control is a kind of special nonlinear control in its essence, its nonlinear behave is presented in the discontinuity of the control value. The distinctive difference between this kind of control algorithm and other traditional control algorithm is that the structure of controller is not fixed but variable, which could exchanges on propose all the times by the current status of the system in a dynamic process (as the error and its differential coefficient) to force the system moving into the estimated"sliding mode"surface.According to the implement of the algorithm in the real industry control, we did a lot of researches about variable structure control based on intelligence control algorithm, and presented two kind of now variable structure control method. The first one is based on time delay system, a special linear exchange is designed for a RBFNN sliding mode control; the other is a variable sliding mode control with intelligence algorithm. There are six chapters in this paper, and the main contents and conclusions are summarized as follows:The first chapter is completely reviews the development, present state and perspectives of intelligent variable structure control. In chapter 2, the implementation and principle of mixed simulation platform are introduced in detail. A simulation platform based on PC for designing and testing virtual controller is constructed, which successfully realizes real-time control with a PC under the windows. In chapter 3, the main characteristics and the design methods of variable structure algorithm is introduced for linear system and discrete system. In chapter 4, two kinds of intelligent sliding mode variable structure control algorithm is presented. First, a fuzzy sliding mode controller is structured to reducing the chattering of the discrete system and sliding mode control. Second, a RBFNN sliding mode controller with special linear transformation is presented for a kind of time delay nonlinear system. In chapter 5, integrating with the intelligent control, variable sliding mode controller with time change order and fuzzy supervisor is presented for a kind of long time delay of input and state. In last chaper, the conclusion of the thesis, the future work and research are presented.