Damping multi-mode switching control for a vehicle semi-active suspension

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (13) : 148-155.

CHEN Long1, MA Rui1, WANG Shoujing2, HUANG Chen1, SUN Xiaoqiang1, CUI Xiaoli3

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Abstract

In order to improve ride comfort of vehicles, a new vehicle semi-active suspension control method based on a damping multi-mode switching damper was proposed. Compared to traditional dampers with adjustable damping, the new damper could have four different damping modes through controlling on-off statuses of two high-speed switch solenoid valves to make damping control of vehicle semi-active suspension be more efficient and energy-saving. The basic principles of dampers with damping multi-mode switching were analyzed to establish damping features mathematical model of this type damper. The damping ratio range of this type vehicle suspension system was applied to determine parameters of key components of this type damper. The damper’s restoring damping coefficients and compression ones under four damping modes were obtained with simulation to establish the mathematical model of this type vehicle semi-active suspension. The suspension’s damping multi-mode switching control strategy was designed based on the fuzzy control logic. Simulation results showed that compared to traditional passive suspensions and semi-active suspensions based on skyhook control, the vehicle semi-active suspension based on damping multi-mode switching damper can further improve vehicle ride comfort.

Key words

vehicle / semi-active suspension / damper / damping multi-mode switching / fuzzy control

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CHEN Long1, MA Rui1, WANG Shoujing2, HUANG Chen1, SUN Xiaoqiang1, CUI Xiaoli3. Damping multi-mode switching control for a vehicle semi-active suspension[J]. Journal of Vibration and Shock, 2020, 39(13): 148-155

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