旋转机械轴心轨迹的自动识别

Automatic Identification of Axis Orbit of Rotating Machinery

研究了轴心轨迹图形的自动识别问题，包括轴心轨迹的形状、进动方向和稳定性，提出了利用图形的不变性矩特征的识别技术，构造了基于不变性特征矩的特征向量，定义了特征矩向量之间的距离，提出了置信度的度量方法。仿真与实验结果表明，该方法可以有效地识别常见的轴心轨迹。

This paper has discussed automatic identification of the axis orbit of rotating machinery. Identification of the axis orbit mainly consists of identifying its shape,moving direction and the stability. In this paper, we have used the theory of moment invariant to identify the orbit, constructed feature vector based on moment invariant, defined the distance between the two feature vectors, and proposed a new method of the identification, which are invariant with respect to axis orbit translation, orientation and size change.Result shows that the new method is feasible.