为研究惯容器与车辆ISD(Inerter-spring-damper)悬架系统耦合振动作用关系及其对悬架性能的影响，定义了惯质耦合系数,其表征了惯容器的质量阻抗与车身质量的耦合效应对悬架振动传递特性的影响程度。采用传递函数法和状态空间方程法分别建立了车辆1/4悬架的频域和时域模型，在此基础上仿真分析惯质耦合系数对悬架性能的影响。结果表明:与等刚度传统被动悬架相比，惯质耦合系数的增加可有效改善车身加速度、悬架动行程、轮胎动载荷在低频共振处的振动传递幅频特性，其幅频峰值分别降低了45.94%、37.5%和51.11%；车身加速度、悬架动行程、轮胎动载荷均方根值分别降低了5.41%、36.36%和6.19%，有效改善了车辆平顺性。

To study the coupling vibration between an inerter and a vehicle inerter-spring-damper (ISD) suspension system and its effect on the suspension performances, the inerter-sprung mass coupled coefficient was defined to represent the influence level of the coupling effect between inerter and sprung-mass on the suspension vibration transfer features. Then adopting the transfer function method and the state space method, the models of a 1/4 vehicle suspension in frequency domain and time domain were established, respectively. Using the two models, the influence of the inerter-sprung mass coupled coefficient on the suspension performance was simulated and analyzed. Simulation results indicated that compared with the conventional passive suspension with the same stiffness, increase in the inerter-sprung mass coupled coefficient  can effectively improve the vibration transfer amplitude-frequency characteristics of body acceleration, suspension dynamic stroke and tire dynamic load at a lower frequency resonance; their amplitude-frequency peaks are reduced by45.94%, 37.5% and 51.11%, respectively; meanwhile, the root-mean-square values of body acceleration, suspension dynamic stroke and tire dynamic load are reduced by5.41%, 36.36% and 6.19%, respectively to effectively improve the ride comfort of a vehicle.