Investigation Stability of Dynamic Fuzzy System by Non- linear TSK Systems

Based on effective methods in the fuild of frequency, the object of this work is using systematic process to predict the limit cycle of TSK non-linear fuzzy control systems and comparsion of results with dynamic fuzzy control systems. The nonlinear TSK control system is become linear by a describing function. According to classic method of Parameter plane, the stability of linearized system is investigated with adjustable parameters. By using nonlinear TSK, this process probably proceed with lower nomber of rules. In this work two example are presented for applicability of non-linear TSK system. It is found that nonlinear TSK dynamic fuzzy control system determine and predict the limit cycle with fewer rules and higher accuracy and asymptotic stability region had been increase in two examples which by computer simulation these information obtained and compared.

کلیدواژه ها:

Describing function ، Nonlinear TSK phase control system ، Phase control ، Parameter plane ، Limit Cycle