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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 Ⅰ—CONTROLLER
SYNTHESIS AND EVALUATION*
Abstract:
A modified skyhook-based semi-active controller is proposed for implementing an asymmetric control suspension design with symmetric magneto-rheological (MR) dampers. The controller is formulated in current form, which is modulated by integrating a continuous modulation and an asymmetric damping force generation algorithms, so as to effectively minimize switching and hysteretic effects from the MR-damper. The proposed controller is implemented with a quarter-vehicle MR-suspension model, and its relative response characteristics are thus evaluated in terms of defined performance measures under varying amplitude harmonic, rounded pulse and random excitations. The sensitivity of the semi-active suspension performance to variations in controller parameters is thoroughly evaluated. The results illustrate that the proposed skyhook-based asymmetric semi-active MR-suspension controller has superior robustness on the system parameter variations, and can achieve desirable multi-objective suspension performance.
Key words:
Magneto-rheological damper Skyhook damping Semi-active control
Vehicle suspension
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