A double-level fuzzy controller with an intelligently adjusting strategy of quantization and scale factors
Yang Xinxin, Yang Lei, Kezhong He, Huang Shengle, Guo Muhe, Zhang Bo · 2002
Based on the analysis of how the quantization and scale factors influence the system performance and the relationship between these factors and the membership functions, a double-level fuzzy controller(DLFC) with an intelligently adjusting strategy of these factors is proposed in this paper. The senior fuzzy controller in the DLFC can adjust the quantization and scale factors of the junior fuzzy controller online, while the latter performs the control of the process. The DLFC has a better robustness than the basic fuzzy controller, which is proved by the simulation results presented in the paper. Two examples of the application of the DLFC to a microwave oven control system and a chemical process are also reported.