journal article·2021-08Open access

Modelling and experimental evaluation of a variable stiffness MR suspension with self-powering capability

Xiaojing Zhu, Donghong Ning, Zhuonan Hao, Hui Huang, Yan Zhi Sun, Hong Jia, Shuaishuai Sun, Tianhong Yan, Weihua Li

Abstract

This paper presents the modelling and experimental evaluation of a semi-active vehicle suspension installed with a self-powered MR damper which is able to perform variable stiffness. Its variable stiffness feature as well as the self-powering capability was evaluated and verified using a hydraulic Instron test system. The testing results show that the stiffness of the damper is dependent on the current which can be generated by the self-powering component. A mathematic model was established to describe the dynamic properties of the MR damper and its power-generating capability. Finally, the self-powered MR suspension was installed on a quarter car test rig for its vibration isolation evaluation. A controller based on the short-time Fourier transform (STFT) was developed for the stiffness control. The evaluation result illustrates that the proposed MR damper can reduce the acceleration and displacement of the sprung mass by 16.8% and 21.4% respectively, compared with the passive system.
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Research context

OpenAlex topics: Vibration Control and Rheological Fluids · Seismic Performance and Analysis · Structural Engineering and Vibration Analysis

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Mechanical, Materials, Mechatronic, and Biomedical Engineering, University of Wollongong, Wollongong, NSW, Australia

Key Laboratory of Fluid Power and Intelligent Electro-Hydraulic Control, Fuzhou University, Fuzhou, Fujian Province, P.R. China

Sinofork Equipment Co., Ltd, Anji, Zhejiang Province, P.R. China

Key Laboratory of E&M (Zhejiang University of Technology), Ministry of Education, Hangzhou, Zhejiang Province, P.R. China

Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes, Department of Precision Machinery and Instrumentation, University of Science and Technology of China, Hefei, Anhui, P.R. China

School of Mechanical and Electronic Engineering, China Jiliang University, Hangzhou, Zhejiang Province, P.R. China

Funding

ARC Linkage Grant

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