基于改进不变矩的发电机组轴心轨迹识别

在发电机组状态检修系统中，转轴轴心轨迹是诊断机组状态的一个重要特征。Hu氏不变矩是图形图像识别中的重要工具。详细分析了离散状态下的Hu氏不变矩应用的局限性，提出了改进方法，并对发电机组发生故障时几类典型轴心轨迹的自动识别进行了仿真试验，结果表明该方法有效、简单可行。

Automatic Identification of Shaft Orbits of Generator Sets Based on Improved Moment Invariant

Axis orbit is an important characteristic to be used to diagnose the condition of the generator sets. Moment invariant of Hu is one of the important tools in graphic recognition. In this paper the limit of moment invariant in disperse state is analyzed and the method is improved. Simulation experiment of automatic identification for some typical axis orbits are operated, which proves that the method is effective, brief and feasible.