【摘要】 针对传统的轴心轨迹方法在回转机械诊断中的缺陷，在二维全息谱和带通保相滤波的基础上，提出了重构低频和倍频轴心轨迹的方法。进而根据低频和倍频轴心轨迹的特点分别提出了基于二维统计不变矩和傅立叶变换的形状特征指标，来定量地评价回转机械的运行状态。经实例验证，该方法在诊断回转机械常见故障及运行状态定量监测方面取得了良好的效果。更多还原

【Abstract】 Based on the two dimensional holographic spectrum and the bandpass phase filtration,a method of reconstructing the low frequency axle center trail and the frequency multiplication axle center trail was proposed for the defects in the diagnosis of rotating machinery with conditional axle center trail method.And further based on the characteristics of the low frequency axle center trail and the frequency multiplication axle center trail,the shape characteristics index based on the two dimensional statistical invarient matrix and the Fourier trans were proposed to estimate quantitatively the operating conditions of rotating machinery.Some examples show that the method had good results in the fault diagnosis of rotating machinery and in the quantitative monitoring of operating conditions.更多还原