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WANG Enrong
YING Liang
WANG Wanjun
School of Electric and Automation
Engineering,
Nanjing Normal University,
Nanjing 210042, China
RAKHEJA Subhash
SU Chunyi
Department of Mechanical and
Industrial Engineering,
Concordia University,
Montreal H3G 1M8, Canada
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SEMI-ACTIVE CONTROL OF VEHICLE
SUSPENSION WITH MAGNETO-
RHEOLOGICAL DAMPERS
PART Ⅱ—EVALUATION OF
SUSPENSION PERFORMANCE*
Abstract:
The design and analysis of an intelligent vehicle suspension with MR dampers should address hybrid semi-active control goals, such as rejection of current-switching discontinuity and MR-damper hysteresis, asymmetric damping from the symmetric MR-damper design, robustness on the vehicle operation parameter uncertainties and consideration of essential multiple suspension goals. Following the proposed skyhook-based asymmetric semi-active controller (Part Ⅰ) for achieving the above goals, herein, a set of suspension performance measures and three kinds of varying amplitude harmonic, rounded pulse and really measured random excitations are systematically defined, and the sensitivity of quarter-vehicle MR-suspension performance to variations in operating conditions is thoroughly analyzed. The results illustrate that the proposed skyhook-based semi-active MR-suspension in the asymmetric mode yields relatively superior dynamic responses to meet the multiple suspension performances of ride, rattle space, road-holding and dynamic tire force transmitted to the pavement, and has desirable robustness on variations in operating conditions of vehicle load and speed and the road roughness.
Key words:
Magneto-rheological damper Asymmetric damping Semi-active control
Vehicle suspension Multi-objective performance
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Biographical notes
WANG Enrong is currently a professor and dean in School of Electrical
and Automation Engineering, Nanjing Normal University, China. He
received his BS and MS degrees in 1985 and 1988, respectively, both from
Department of Automatic Control, Southeast University, China, and
received his PhD degree from Department of Mechanical and Industrial
Engineering, Concordia University, Canada, in 2006. His research
interests include the semi-active control for implementing intelligent
vehicle suspension with MR-fluid dampers and associated projects in
electrical engineering, etc.
Tel: +86-25-85481043; E-mail: erwang@njnu.edu.cn
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