Adaptive fuzzy control of a magnetorheological elastomer vibration isolation system with time-varying sinusoidal excitations. (15th September 2019)

• Record Type: Journal Article
• Authors: Fu, Jie; Bai, Junfeng; Lai, Junjie; Li, Peidong; Yu, Miao; Lam, Hak-Keung
• Is Part Of: Journal of sound and vibration. Volume 456(2019)
• Page Start: 386
• Page End: 406
• Publication Date: 2019-09-15
• Subjects: Magnetorheological elastomer (MRE) -- Transmissibility curve -- Adaptive fuzzy controller (AFC) -- Time-varying excitations -- Vibration isolation; Sound -- Periodicals; Vibration -- Periodicals; Son -- Périodiques; Vibration -- Périodiques; Sound; Vibration; Periodicals; Electronic journals; 620.205
• DOI: 10.1016/j.jsv.2019.05.046
• Languages: English
• ISSNs: 0022-460X

Abstract

Abstract: This paper presents the design method of an adaptive fuzzy controller (AFC) for a magnetorheological elastomer (MRE) vibration isolation system with time-varying sinusoidal excitations. In the first place, Kelvin model of MRE isolator without application of driving current is obtained by acceleration sweep experiments on a shake table, which establishes a foundation for the design of adaptive law. Secondly, a semi-active AFC with factor adjustment mechanism is designed based on the transmissibility curves under zero magnetic application and semi-active fuzzy control theory, which is independent of the isolation system model and adaptive to time-varying excitations in amplitudes and frequencies without adopting complicated fast Fourier transformation (FFT) analyzer. Finally, acceleration responses of the system with AFC to time-varying sinusoidal excitations are evaluated by numerical simulation and physical experiments, which indicate that the AFC could maintain satisfying control effect in the presence of time-varying sinusoidal excitations in amplitudes and frequencies, and is also more optimal than conventional fuzzy controller (FC).