A Novel Approach To Improve The Performance Of FuzzyLogic Based Controllers For Systems With Wide Range disturbances And Uncertain Parameters | ||||
| ERJ. Engineering Research Journal | ||||
| Article 4, Volume 22, Issue 3, October 1999, Page 41-56 PDF (767.19 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.1999.72449 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| A.M. Abdel-Hamid | ||||
| Department of Electrical Engineering, Faculty of Engineering, El-Monoufia University. Shebin El-Kom, Egypt | ||||
| Abstract | ||||
| Applications offuzzy logic controllers have proved that a tuning algorithm must be added to improve its perfomance against the system disturbances. The tuning methodr represent an additional costs and complexiry for implementation. This paper, presents a novel method which implies a self-tuned controh capable of damping the system oscillations whatever the disturbance changes. Moreover, this controller is robust to a degree that permits more than 2500% parameters uncertainties to be considered. The idea of this approach is to combine two control signals, one from a conventional stabilizer, e.g. lead lag compensator, and the other from a fuzzy logic controller. The stabilizer is designed based on modal techniques for the worst case of oscillations and is independent on the system disturbance. On the other side, the ranges of membership firnetions requiredfor the design of fuzzy logic controller are selected based on the worst experience of the input/output behavior. Thefinal controller is testedfor diflerent disturbances and system parameters and the results show a satisfactoory perfomance and robustness. | ||||
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