Vehicle active ISD-DVA suspension system

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (1) : 167-174.

GE Zheng, WANG Weirui

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Abstract

To solve problems that the inertial of an actuator is harmful to active suspension performance and the vibration reduction effect of inerter-spring-damper (ISD) type dynamic vibration absorber (DVA) suspension is limited, a configuration of vehicle suspension with an active ISD type DVA and a control strategy of compensating vehicle body acceleration was put forward. Through the analysis of system dynamic impedance characteristics, the resonance peaks obvious reduction of the suspension system was realized with the proposed methods. The relationships among the system parameters and three indices of automotive ride comfort were studied. Results showed that the acceleration compensation coefficient should be selected as larger as space permits, and other parameters should be selected in an eclectic way. The effects of an active ISD-DVA suspension were compared with those of an ideal DVA suspension, a passive ISD-DVA suspension, a traditional passive suspension and an active skyhook suspension using numerical simulation. The results indicated that the better ride comfort is provided and bad effects of an actuators inertial are overcome with the new type of suspension; the control strategy for vehicle body acceleration compensation has a simpler algorithm and a less cost for calculation, it is helpful to reducing costs and increasing control robustness and real-time performance.

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Acitve suspension / Dynamic Vibration Absorber / Inerter

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GE Zheng, WANG Weirui. Vehicle active ISD-DVA suspension system[J]. Journal of Vibration and Shock, 2017, 36(1): 167-174

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