Adaptive chaotic control of permanent magnet synchronous motor

Based on the LaSalle's invariant set theorem, an adaptive controller is constructed to acquire the chaotic control for the permanent magnet synchronous motor. And then a extended adaptive controller is developed by introducing a control strength factor. In comparison with the previous schemes, the present control method is simple, flexible, and is applicable in practice because of reduced control cost. Simulation results are presented to show the effectiveness and the robust of the proposed method.