Abstract
As three-phase asynchronous motor is a complex system with time-varying multiple-input multiple-output, strong coupling, nonlinear and at least seven order differential equations. So the use of linear and fixed PID parameters to control slip frequency system cannot give well consideration to dynamic and static performance. In order to improve the control effect and enhance the robustness, this paper put forward a slip frequency control scheme of fuzzy self-adaptive PID algorithm, which is based on the complementary combination of advantages between PID control and fuzzy control. The control structure and design method of implementation scheme are given, and the simulation was conducted by MATLAB. The simulation results show that the scheme is feasible as it has better dynamic and static performance than conventional PID control.
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