某运动型多用途车怠速振动分析及优化

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (4) : 165-175.

振动理论与交叉研究

某运动型多用途车怠速振动分析及优化

陈清爽1,2，钟秤平*1,2,4，郭荣3,4，王理周1,2，罗鑫1,2,肖俊平1

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Idle Vibration Analysis and Optimization of a Sport Utility Vehicle

CHEN Qingshuang1,2,ZHONG Chengping*1,2,4,GUO Rong3,4,WANG Lizhou1,2,LUO Xin1,2,XIAO Junping1

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摘要

针对某运动型多用途车开启空调所引发的怠速振动问题，进行了激励源及路径分析与优化。通过频谱分析和部件独立运行法识别出问题主要贡献频率和激励源。利用齐次坐标变换建立风扇转子不平衡计算模型，阐明了制造参数与装配位置对不平衡激励的传递原理，并基于Monte Carlo法计算了转子不平衡的统计分布；通过模态实验与冷却模块衬套振动模型仿真计算，分析出冷却模块共振是路径放大的主要原因。应用风扇转子不平衡贡献量分析方法识别了关键影响因子，指导了转子不平衡优化；基于遗传算法优化了冷却模块衬套刚度，实现冷却模块模态频率分离。优化方案验证结果表明：降低转子不平衡与冷却模块模态频率分离的组合方案显著改善了怠速振动问题。

Abstract

The idle vibration problem is analyzed and optimized for the air conditioning compressor operating. The major contributing frequency and excitation source of the vibration problem are identified by spectrum analysis and the component-independent operation method. The fan rotor unbalance calculation model is established by homogeneous coordinate transforms method. The principle of transmission of unbalance excitation is explained Computational modeling about manufacturing parameters and assembly position. Statistical distribution of rotor unbalance is calculated by Monte Carlo method. Modal tests and cooling module bushing vibration model simulation calculations show that the cooling module system resonance is the main cause of path transfer. The contribution analysis method of fan rotor imbalance is applied to identify the key factors affecting and optimize the rotor unbalance. The cooling module bushing stiffness is optimized based on genetic algorithm to achieve the modal frequency separation. The validation results of the optimization scheme show that the combination solution of reducing rotor unbalance and cooling module modal frequency separation significantly improves the idle vibration.

导出引用

陈清爽1, 2, 钟秤平1, 2, 4, 郭荣3, 4, 王理周1, 2, 罗鑫1, 2, 肖俊平1. 某运动型多用途车怠速振动分析及优化[J]. 振动与冲击, 2025, 44(4): 165-175

CHEN Qingshuang1, 2, ZHONG Chengping1, 2, 4, GUO Rong3, 4, WANG Lizhou1, 2, LUO Xin1, 2, XIAO Junping1. Idle Vibration Analysis and Optimization of a Sport Utility Vehicle[J]. Journal of Vibration and Shock, 2025, 44(4): 165-175

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