Vibration Control and Design of Vehicle Engine Mount Activated by Magnetorheological Fluid

Abstract:

Magneto-rheological (MR) fluid mount demonstrates excellent performance of vibration isolation in a wide frequency range and potential application in engineering. In this paper, a new mixed mode MR mount is proposed and an analytical model is established and used to predict the performance of MR mount. Meantime, a six degrees of freedom dynamic model of an in-line four-cylinder engine which has three points mounting system is derived by considering the dynamic behaviors of MR mount and its state space form is established. LQR and fuzzy-logic controllers are designed and synthesized to actively control the imposed vibration. The simulation results show that the proposed LQR or fuzzy-logic controllers can isolate the vibration of vehicle engine in a wide frequency range. The amplitudes can be suppressed well by employing this mount system. Its effectiveness will be verified via experiment in the second part of this work.

• Periodical: Advanced Engineering Forum (Volumes 2-3)
• Pages: 1077-1081
• DOI: https://doi.org/10.4028/www.scientific.net/AEF.2-3.1077
• Online since: December 2011
• Authors: Zhao Xue Deng, Ling Zheng
• Keywords: Fuzzy Logic Controller, LQR, Magnetorheological Mount, Vehicle Engine

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