基于NIPCE考虑磨损的和驱动器精度可靠性评估方法的研究
Xian Zhang1, Changming Zhang2, Peng Wang2
1School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, 723001, China. zhangxian_0905@sina.com.
Scientific reports
|April 25, 2025
概括
本研究引入了一种新的方法来评估和驱动器的精度可靠性,考虑磨损以更好地预测故障和维护. 该方法准确地估计了可靠性,证实了它对测试数据的有效性.
科学领域:
- 机械工程 机械工程
- 可靠性工程可靠性工程
- 部落学 (tribology) 是一个学科.
背景情况:
- 调驱动器在精密应用中至关重要.
- 磨损导致的精度降低是关键的故障模式.
- 积极维护需要准确的可靠性评估.
研究的目的:
- 提出一个动态可靠性评估方法,用于协调驱动精度,考虑到磨损.
- 为了能够准确地估计故障预测和维护的可靠性.
- 分析不同磨损元件对整体精度可靠性的影响.
主要方法:
- 建立了采用接触对磨损的和驱动器的动态模型.
- 使用非侵入性的多项式混沌扩展 (NIPCE) 进行动态模型的不确定性分析.
- 使用稀疏网格提高不确定性分析效率.
- 开发了一种精确的动态可靠性评估方法,使用来自多项式混乱扩展和蒙特卡洛模拟的明确替代模型.
主要成果:
- 在flexspline (FS) 和circularspline (CS) 之间的磨损显著影响精度可靠性,而不是FS和波量发生器 (WG) 的磨损.
- 拟议方法的精度动态可靠性趋势与实验精度降解试验结果一致.
- 考虑磨损的动态可靠性评估方法的有效性得到验证.
结论:
- 开发的方法为精密波驱动器提供了准确的动态可靠性评估.
- 了解磨损对特定组件 (FS/CS与FS/WG) 的影响对于可靠性评估至关重要.
- 这种方法支持精密工程中增强故障预测和主动维护策略.
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