Optimization design and performance of vehicle ISD suspension based on ADD positive real network

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (11) : 262-268.

LIU Yanling, YAN Long, YANG Xiaofeng, SHEN Yujie, LIU Changning

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Abstract

The ISD （inerter spring damper) suspension system of passive vehicle can effectively suppress low-frequency vibration of vehicle body, combined with the classical acceleration driven damping (ADD) control able to suppress medium-high vibration of vehicle body, the comprehensive optimization design method of vehicle ISD suspension based on ADD positive real network was proposed to convert the problem of broad frequency field vibration suppression of vehicle ISD suspension into the problem of positive real optimization control based on ADD network synthesis.The suspension dynamic models of first-order and second-order positive real networks were constructed, respectively.The suspension’s structural parameters were optimized based on the fish swarm algorithm.The coupling action mechanism of ADD control and positive real network and the influence of positive real network order on suspension performance were simulated and analyzed.The results showed that the vibration isolation performance of suspension is improved with increase in order of positive real network; the ADD network synthesis method can effectively realize vibration suppression of vehicle ISD suspension in broad frequency field, and further expand the idea of active control of vehicle ISD suspension.

Key words

ISD suspension / acceleration driven damping (ADD) control / artificial fish swarm algorithm / network synthesis

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LIU Yanling, YAN Long, YANG Xiaofeng, SHEN Yujie, LIU Changning. Optimization design and performance of vehicle ISD suspension based on ADD positive real network[J]. Journal of Vibration and Shock, 2021, 40(11): 262-268

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