从馈入能量的角度来探讨对制动尖叫噪声分析的方法。在制动器的摩擦闭环耦合模型的基础上 ,推导了系统尖叫模态的馈入能量计算方法。基于馈入能量的分析 ,可较直观地看出一些结构参数对制动噪声的影响 ,如摩擦因数、制动块形状、刚度及有重要影响的子结构模态振型 ,并有助于分析抑制噪声的结构修改方案。该方法对制动器结构振动噪声的分析具有指导意义 From the perspective of feeding energy, this paper discusses the method of analyzing the noise of brake squeal. Based on the friction closed-loop coupled model of the brake, the method of calculating the feed-in energy of the system’s screaming mode is deduced. Based on the analysis of the feed-in energy, the influence of some structural parameters on the braking noise, such as the friction factor, the shape of the brake pad, the stiffness and the mode shapes of substructures with significant influence, can be seen more intuitively and help to analyze Noise suppression structure modification scheme. The method is of guiding significance for the analysis of brake noise and vibration