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Electro-mechanical suspension system considering energy consumption and vehicle manoeuvre

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In this paper, the performance of the electro-mechanical suspension is discussed on the energy consumption, vibration isolation, and vehicle manoeuvrability. On the basis of the formulation of electro-mechanical suspension, the energy consumption and vibration isolation are discussed through the contour maps with the sprung and unsprung mass velocity feedback gain axes. From the numerical simulation and experimental results, the contour maps for the evaluation of the performance with feedback gain axes are proposed, and on these maps, the abilities of vibration isolation and manoeuvrability are evaluated. On the energy consumption, the regeneration region exists, and the velocity feedback gain of unsprung mass should be considered for regeneration and energy saving. Moreover, Gain settings for improving each vehicle performance are proposed and verified by shaker tests. From simulation and experimental results, it is demonstrated that the proposed active suspension system is able to solve the compatibility between vibration isolation and energy saving.

Keywords: automobile; damping; electro-mechanical actuator; suspension; vibration control

Document Type: Research Article


Affiliations: 1: Institute of Industrial Science, The University of Tokyo, Tokyo, Japan 2: Center for Collaborative Research, The University of Tokyo, Tokyo, Japan 3: Chassis System Development Division, Toyota Motor Corporation, Toyota, Aichi, Japan 4: New Products Development Department, KYB Corporation, Gifu, Japan

Publication date: September 1, 2008


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