汽车液压减振器抗异响稳健性设计

通过减振器台架试验对某双筒液压减振器仿真模型进行了置信度检验。以能表征异响程度的杆端加速度时域峰、谷值绝对值之和为目标函数，基于高精度仿真模型对19个设计参数进行了灵敏度及影响规律分析，在此基础上对灵敏度较大的11个参数进行了稳健设计，得到了信噪比最大、稳健性最好的最优参数组合。应用方差分析区分了设计参数对信噪比的显著程度，进一步调整对信噪比不显著但对目标函数较敏感的参数取值，最后通过台架试验进一步确认了最优方案，为其他类型减振器抗异响设计提供参考。

Anti Abnormal Noise Robustness Design of Automotive Hydraulic Shock Absorber

The confidence degree of simulation model of a double cylinder hydraulic shock absorber is tested by a shock absorber bench test. The sum of absolute values of peak and valley values for acceleration at the end of rod is taken for the objective function and sensitivity and influence laws of nineteen design parameters are analyzed based on a high precision simulation model. On this basis, a robustness design is made for eleven parameters with larger sensitivity, and the best combination of parameters with the best signal-to-noise ratio and the optimal robustness is obtained. Variance analysis is used to distinguish the significant degree of design parameters to signal-to-noise ratio, and we further adjust the parameters that are not sensitive to signal-to-noise ratio but sensitive to the objective function. Finally, the optimal scheme is further confirmed by a bench test. It can provide reference for anti noise design of other types of shock absorbers.