Design and vibration control of vehicle engine mount activated by MR fluid and piezoelectric actuator

D. Y. Lee; Y. K. Park; S. B. Choi; H. G. Lee

doi:10.1117/12.840364

20 October 2009 Design and vibration control of vehicle engine mount activated by MR fluid and piezoelectric actuator

D. Y. Lee, Y. K. Park, S. B. Choi, H. G. Lee

Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 74936T (2009) https://doi.org/10.1117/12.840364
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China

Abstract

An engine is one of the most dominant noise and vibration sources in vehicle systems. Therefore, in order to resolve noise and vibration problems due to engine, various types of engine mounts have been proposed. This work presents a new type of active engine mount system featuring a magneto-rheological (MR) fluid and a piezostack actuator. As a first step, 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 piezostack mount. In the configuration of engine mount system, two MR mounts are installed for vibration control of roll mode motion whose energy is very high in low frequency range, while one piezostack mount is installed for vibration control of bounce and pitch mode motion whose energy is relatively high in high frequency range. As a second step, linear quadratic regulator (LQR) controller is synthesized to actively control the imposed vibration. In order to demonstrate the effectiveness of the proposed active engine mount, vibration control performances are evaluated under various engine operating speeds (wide frequency range).

Citation Download Citation

D. Y. Lee, Y. K. Park, S. B. Choi, and H. G. Lee "Design and vibration control of vehicle engine mount activated by MR fluid and piezoelectric actuator", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74936T (20 October 2009); https://doi.org/10.1117/12.840364

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