Condition monitoring is crucial for the predictive maintenance of gear transmissions to avoid unexpected failures with downtimes, costly repairs, or dangerous incidents. While vibration-based condition monitoring is widespread in industry and research, using angle measurements as a primary source still offers much potential. This review provides insights into current methods of angle-based condition monitoring for gear transmissions – from sensors, data acquisition, and algorithms to condition evaluations. It shows how current research applies measurement principles with various resolutions and sampling frequencies at stationary and dynamic operating conditions. It includes one or multiple angle measurements (instantaneous angle, instantaneous angular speed, instantaneous angular acceleration, or transmission error), electric current measurements, or the combination with acceleration measurements. Next to rotation as an auxiliary quantity for vibration order tracking, the review, in particular, focuses on algorithms with angle-based condition indicators. It summarizes the state of research of preprocessing, feature engineering, and automatic condition evaluation methods. Using angle measurements for gear condition monitoring is a promising approach to improve fault detection capabilities. Therefore, a summary of the identified gaps and needs recommends future research for further enhancing angle-based gear condition monitoring.

中文翻译：

---

角度测量在齿轮状态监测和故障检测中的应用综述


状态监测对于齿轮传动的预测性维护至关重要，以避免因停机、昂贵的维修或危险事故而出现意外故障。虽然基于振动的状态监测在工业和研究中很普遍，但使用角度测量作为主要来源仍然具有很大的潜力。这篇综述对当前齿轮传动基于角度的状态监测方法（从传感器、数据采集和算法到状态评估）提供了见解。它展示了当前研究如何在静止和动态操作条件下应用具有不同分辨率和采样频率的测量原理。它包括一个或多个角度测量（瞬时角度、瞬时角速度、瞬时角加速度或传输误差）、电流测量或与加速度测量的组合。除了将旋转作为振动阶次跟踪的辅助量之外，该评论还特别关注具有基于角度的状态指示器的算法。它总结了预处理、特征工程和自动条件评估方法的研究现状。使用角度测量进行齿轮状态监测是提高故障检测能力的一种很有前途的方法。因此，对已确定的差距和需求的总结建议了未来的研究，以进一步加强基于角度的齿轮状态监测。