精度评估方法 刀片振动测量刀片尖端定时基于使用到达时间直接校准的准确度评估方法
Qi Zhou1, Guangyue Niu1, Meiru Liu2
1State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, Tianjin 300072, China.
Sensors (Basel, Switzerland)
|April 12, 2025
概括
这项研究介绍了在非接触式刀片振动测量 (BTT) 中到达时间 (ToA) 的直接校准方法. 一种新型设备和模型准确地评估BTT系统用于旋转机械健康监测的准确性.
科学领域:
- 机械工程 机械工程
- 状态监控 状态监控
- 仪器仪表和测量仪器的使用
背景情况:
- 无接触刀片振动测量 (BTT) 对于旋转机械健康监测至关重要.
- 在BTT中的到达时间 (ToA) 数据直接影响振动分析的准确性.
- 目前的BTT错误评估缺乏对ToA的直接校准,导致不准确的评估.
研究的目的:
- 为ToA开发一种直接校准方法,以评估BTT测量精度.
- 创建一个专门的设备来评估BTT准确性和稳定性.
- 用光纤BTT系统验证拟议的方法和设备.
主要方法:
- 开发了一个ToA直接校准模型,将ToA变化转化为角差异.
- 系统地分析了BTT准确性评估的相关错误.
- 采用蒙特卡洛方法来评估设备的不确定性,考虑系统和随机因素.
主要成果:
- 开发的设备在0.5°和1000rpm时产生了ToA,标准不确定性为8.824 × 10−3μs.
- 经过验证的光纤BTT系统实现了相对精度<0.8%和可重复性精度>0.5%.
- 证明了BTT系统的直接校准方法和设备的有效性.
结论:
- 拟议的方法为评估BTT测量精度提供了可靠和精确的方法.
- 直接ToA校准可以提高实时状态监测和故障检测的有效性.
- 开发的设备为评估BTT系统性能提供了经过验证的工具.
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