液压变压器自由转子的摩擦力矩模型与试验验证

doi:10.3901/JME.2025.06.308

摘要/Abstract

摘要： 摩擦力矩模型是进行液压变压器转子动力学分析和性能评价的重要前提，目前尚缺乏全转速范围内的精确摩擦力矩模型。基于Stribeck摩擦模型，分析各摩擦副的摩擦状态。依次求解了边界润滑、混合润滑和流体润滑状态的摩擦因数，根据摩擦因数的连续条件，给出润滑状态间过渡点的计算方法，建立各摩擦副的通用摩擦因数模型。基于通用摩擦因数模型，确定滑靴副和配流副的摩擦参数并求解其摩擦因数，给出摩擦力矩的计算方法。计算自由转子的搅油力矩，构建自由转子全转速范围的摩擦力矩模型。搭建自由转子摩擦力矩试验平台，并进行试验，验证了理论模型的正确性。所获得的摩擦力矩模型为液压变压器的动力学分析和精确控制提供了良好的基础。

关键词: 液压变压器, 自由转子, Stribeck摩擦模型, 摩擦因数, 摩擦力矩

Abstract: Friction torque model is an essential prerequisite for the rotor dynamic analysis and performance evaluation of hydraulic transformer. However, an accurate friction torque model within the full speed range is currently lacking. Based on the Stribeck friction model, the friction states of each friction pair are analyzed. The friction coefficient for boundary lubrication, mixed lubrication, and fluid lubrication are solved successively. According to the continuous condition of the friction coefficient, the calculation method of the transition points between lubrication states is given, and the general friction coefficient model for each friction pair is established. Based on the general friction coefficient model, the friction parameters of the slipper pair and the flow distribution pair are determined, the friction coefficients are solved, and the calculation method of the friction torque is given. The stirring torque of the free rotor is calculated, and the friction torque model of the free rotor in the full speed range is established. A platform on friction torque of the free rotor is built, and the test is carried out to verify the correctness of the theoretical model. The friction torque model provides a good basis for the dynamic analysis and accurate control of the hydraulic transformer.

Key words: hydraulic transformer, free rotor, Stribeck friction model, friction coefficient, friction torque

中图分类号:

TH137

包倩倩, 周俊杰, 荆崇波, 廖文博, 杜善霄, 张祝. 液压变压器自由转子的摩擦力矩模型与试验验证[J]. 机械工程学报, 2025, 61(6): 308-315.

BAO Qianqian, ZHOU Junjie, JING Chongbo, LIAO Wenbo, DU Shanxiao, ZHANG Zhu. Friction Torque Model and Experiment Verification on the Free Rotor of Hydraulic Transformer[J]. Journal of Mechanical Engineering, 2025, 61(6): 308-315.

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