ISD( inerter-spring-damper)悬架是由惯容器、弹簧和阻尼器构成的一种新型车辆被动悬架。本文中基于动力吸振器在振动控制中的作用,利用惯容器动力学特性,建立了ISD悬架的单轮模型,设计出含有动力吸振器结构的ISD悬架,并对其进行仿真,用多目标遗传算法确定元件参数,分析ISD悬架的主频率特性和各性能指标(车身加速度、悬架动行程和轮胎动载荷)的振动传递特性。仿真结果表明,在0~15Hz低频段,与等刚度的传统被动悬架相比,ISD悬架改善了各性能指标的振动传递幅频特性,降低了各性能指标在共振频率1Hz附近的功率谱密度峰值。%Inerter-spring-damper( ISD) suspension is a new type of vehicle passive suspension, consisting of inerter, spring and damper. In this paper, based on the role of dynamic vibration absorber( DVA) in vibration con-trol, and by utilizing the dynamic characteristics of inerter, a single wheel model for ISD suspension is built and an ISD suspension incorporating the structure of DVA is designed. Then a simulation on ISD suspension is conducted, in which the parameters of its components are determined with multi-objective genetic algorithm, and its main fre-quency characteristics and the vibration transmission characteristics for all three performance indicators( vehicle body acceleration, suspension dynamic travel and dynamic tire load) are analyzed. Simulation results show that compared with traditional passive suspension with same stiffness, the amplitude-frequency characteristics of vibration transmis-sion for all suspension performance indicators are improved at low frequency range of 0 ~15Hz, and the peaks of power spectral density for all performance indicators are reduced effectively at resonance frequency near 1Hz.
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