中文摘要：

为了在满足减振需求的同时提高悬架的馈能效果，对一种新型液一电馈能式悬架的液压系统参数进行了灵敏度分析和优化．在AMESim中建立了液一电馈能单元的仿真模型，并通过样机台架试验对仿真模型进行了验证．以ISIGHT为平台，在1／4车辆AMESim模型中，对影响车身加速度和馈能功率的5个液压系统参数进行了灵敏度分析．结果表明：液压马达排量对车身加速度和馈能功率均有显著的影响．以平顺性为约束，建立了提高馈能功率的优化模型，并对液压系统的参数进行了优化计算．结果表明：在满足车身平顺性的前提下，优化后的平均馈能功率提高了12．7％．

英文摘要：

To improve suspension regenerative power with reasonable vehicle ride comfort, sensitivity analysis and optimization of hydraulic parameters to a hydraulic-electrical regenerative suspension were carried out. The regenerative suspension consists of a spring and a hydra-electrical regenerative unit. Based on the suspension structure and principle,a simulation model of the hydra-electrical regenerative unit was established by AMESim software. And the model was verified by a prototype testing of the hydraulic-electrical regenerative unit. Taking ISIGHT software as a platform, sensitivities of hydraulic system parameters affecting car-body vertical acceleration and suspension regenerative power were analyzed by a quarter car vehicle mode in AMESim. The results show that, compared with recharging pressures and volumes of two accumulators, hydraulic motor displacement has a significant effect on both the vehicle vertical acceleration and suspension regenerative power. Moreover, taking the vehicle vertical acceleration RMS value of a traditional suspension as a constraint,the hydraulic system parameters were optimized to maximize the suspension average regenerative power. The results show that the average regenerative power is im- proved by 12.7% after optimization when the vehicle ride comfort is acceptable.