Control of Active Suspension System: An Interval Type -2 Fuzzy Approach
Bijan Ranjbar-Sahraie, Mohammad Dehghani Soltani, Mehdi Roopaie · 2011
Abstract: In this paper, we introduce a novel interval type-2 Fuzzy Logic System (FLS) for active automobile suspension control in presence of system unmodeling, measurement noises and external disturbances. In order to efficient reduction of noise effects and improving the reliability of suspension system, a fuzzy controller is designed. Interval type-2 FLS is used to improve the disturbance rejection of suspension system which can be caused by road shocks. Therefore, better control performance and car passengers comfort is achieved, in comparison with previous type-1 fuzzy controllers. In addition, it is shown that the proposed controller provide better responses even in comparison with similar type-2 fuzzy controllers. The designing procedure of proposed interval type-2 fuzzy controller is presented in detail and simulation examples are presented to verify the effectiveness of the method. Results are compared with some other methods proposed in the past research. Key words: Active suspension system • interval type-2 fuzzy control • passengers comfort