中文摘要：

阶比跟踪是一种用于旋转类机械系统动态设计、故障诊断和状态监测的重要方法。阐述了阶比跟踪的国内外发展及技术情况。对阶比跟踪算法从不同的角度进行了分类，并对各种旋转机械阶比跟踪技术的优缺点进行了详细的分析和比较，以表格的形式进行了系统的描述。展望了阶比跟踪算法研究的主要发展方向。

英文摘要：

Order tracking（OT） is an important method for dynamic design, fault diagnosis and condition monitoring in rotating machinery. In combination with the most recent advances in domestic and international OT methodolo- gies, OT algorithms are categorized systematically according to different ways. The detailed analyses and comparisons are made to account for all kinds of OT algorithms in table. Some. possible directions in OT algorithm research are pointed out.