关键词: 广义通用模型 , 相对阶 , 模糊控制 , 变结构控制 , 趋近律 , MATLAB仿真

Abstract: The fuzzy variable structure-generalized common model control method was provided for DC-DC converter′s strong non-linear feature and to enhance its performance.By designing a GCMC controller,this method converts the strongly nonlinear system to the normally linear system.However,when the parameters of the DC-DC converter system were changed,the GCMC controller can not maintain the linear character of the system,so this paper contrive a FSMC controller to further enhance the system′s performance.This FSMC controller uses variable structure control to increase the robustness of the system,and while dealing whit the chattering problem it inducts the reaching law concept,and it also introduces the fuzzy control to further expedite the response time and weaken the chattering problem.The result of simulation indicates that the controller is workable with good robustness and good dynamic and static performance.

Key words: Generalized common model control , Relative degree , Fuzzy control , Variable structure control , Reaching law , MATALB simulation