转子轴心轨迹是分析转子故障原因的重要依据. 实测的轴心轨迹由于存在噪声干扰需要经过提纯方能用于转子故障分析. 针对最新提出的偏微分方程轴心轨迹提纯新方法,提出小波精细积分提纯算法. 数值结果表明,小波精细积分法可有效滤除信号中的噪声,且消噪之后的信号畸变小,保证了滤波前后信号固有结构不变.%Locus of journal center is often employed to analyze the failure of rotor. In fact, there are much more noises exist in the original signal of the locus of journal center, which is against of the precise analysis to the failure to some extent. The partial differential equation method is a new kind of purification technique for the locus of journal center proposed in recent years. Based on this new method, the wavelet precise inte-gration algorithm is proposed in this paper. As a matter of fact, the wavelet precise integration method ( WPIM) is an efficient algorithm to solve the partial differential equation for the purification to the locus of journal center. The numerical experiments show that the proposed method can eliminate the noises in the o-riginal signal effectively, and it won' t change the essential feature of the original signal, this is helpful to improve the correctness of the analysis to the locus of journal center.
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