Abstract
This paper treats H∞ control system with exact linearization for an AC motor system with CSI. The characteristic of this system considerafly changes by the disturbances and changes of parameters. At first our approach to modelling of the CSI driven induction motor is presented. Then the H∞ controller is designed for the obtained model that is the linear approximation of the plant around an equilibrium point and the nonlinear controller is constructed with exact linearrization via nonlinear state feedback. Moreover, for comparison, we also construct a PI control system based on the clasical control theory and a H∞ control system without exact linearization. The results of several experiments show that the H∞ control system with exact linearization is quite robust against disturbances and changable parameters as compared with the PI control system and the H∞ control system without exact linearization.
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