液电馈能式减振器阻尼特性理论及试验

Theory and experiment of damping characteristics of hydraulic electromagnetic energy-regenerative shock absorber

提出了液电馈能式减振器(HESA)的简化模型,从液压整流桥、液压马达以及管路的损失等方面分析了液压回路的压降,推导了HESA的理论阻尼力;试制了HESA的样机并建立了相应的试验台架,对HESA的样机进行了台架试验,对比分析了试验数据以及理论数据。结果表明,在激励频率为1.67Hz、激励幅值为12.5mm时,HESA的理论阻尼力与试验阻尼力吻合很好,具有很高的准确性,随着激励幅值的增大,试验阻尼力与理论阻尼力的偏差增大;相比伸张行程,压缩行程的试验阻尼力与理论阻尼力吻合得更好。

A simplified model of Hydraulic Electromagnetic energy-regenerative Shock Absorber （HESA） was proposed. The pressure drop of the hydraulic circuit was analyzed from the loss in the hydraulic rectifier, the hydraulic motor and pipeline. The theoretical damping force of HESA was deduced. A HESA prototype was manufactured, the corresponding test bench was built. The experiment of the prototype was carried out, and the experimental data was compared with the theoretical data. Results indicate that, under the condition of excitation frequency of 1.67 Hz and excitation amplitude of 12.5 mm, the experimental damping force of HESA is in good agreement with the theoretical value. The deviation of the experimental data from the theoretical value increases with the amplitude. The deviation of the experimental data from the theoretical value in the compression stroke is smaller than that in the extension stroke.