Abstract：To enhance vehicle ride comfort while ensuring driving safety and handling stability, this study analyzes the vibration attenuation characteristics and parameter optimization for an Inerter-Spring-Damper (ISD) suspension system with time-delayed acceleration feedback control. A dynamic model of the ISD suspension incorporating time-delayed acceleration feedback is established. Based on the sprung mass acceleration, suspension dynamic deflection, and tire dynamic load as performance evaluation indices, a multi-objective optimization function is constructed. The optimized values of the inertia coefficient, feedback gain coefficient, and time delay are proposed, and the vibration suppression performance of the suspension under different control configurations is analyzed and compared. The results indicate that increasing the inertia coefficient helps enhance the stability of the active ISD suspension system. Compared to conventional passive suspensions and passive ISD suspensions, the active ISD suspension with optimally configured feedback gain coefficient and time delay parameters further improves ride comfort, characterized by a significant reduction in the peak sprung mass acceleration, while the suspension dynamic deflection and tire dynamic load remain strictly within acceptable limits, which ensures driving safety and handling stability. This study reveals the synergistic mechanism between time-delayed acceleration feedback and the inerter in vibration suppression, providing new insights and a theoretical basis for the design of high-performance vehicle suspension systems.
2026, Vol. 47 
