载波同步信号平均化用于行星变速箱内裂纹传播趋势的运载同步信号平均化
1Defence Science and Technology Group (DSTG), Melbourne, VIC 3207, Australia.
Sensors (Basel, Switzerland)
|March 14, 2026
概括
本研究介绍了一种使用载波同步信号平均 (C-SSA) 来监测行星变速箱裂的信号处理方法. 该技术有效地跟踪裂的传播,以改善结构健康监测.
科学领域:
- 机械工程 机械工程
- 振动分析 振动分析
- 结构健康监测 结构健康监测
背景情况:
- 行星变速箱外的裂会产生明显的振动反应.
- 这些振动为监测结构退化提供了潜在的可能性.
- 现有的方法在检测外裂时可能缺乏灵敏度或可靠性.
研究的目的:
- 开发和验证一个信号处理框架,用于跟踪行星变速箱外中的裂纹相关特征.
- 使用载波同步信号平均值 (C-SSA) 进行增强的裂检测.
- 建立可靠的健康状况指标,用于监测裂传播.
主要方法:
- 处理狩猎牙同步信号平均值 (H-SSA) 来提取C-SSA.
- 计算C-SSA的平方根平均值 (RMS) 作为健康状况指标.
- 应用希尔伯特变换 (HT) 来导出一个平方的信封信号,以增强趋势.
- 采用单一光谱分析技术 (SSAT) 来消除温度影响并隔离损伤进展.
主要成果:
- C-SSA信号有效地捕捉了轮加载和体响应之间的循环相互作用.
- C-SSA的RMS及其方形信封信号在跟踪裂进展方面表现出良好的能力.
- 在不同负载级别 (100%,125%,150%) 中观察到一致的性能,在更高负载时得到更好的结果.
- 用三个装在外上的传感器进行的实验验验证了该方法的有效性.
结论:
- 拟议的C-SSA框架显著提高了基于振动的外裂检测的灵敏度和可靠性.
- 该方法为行星变速箱的长期结构健康监测提供了一个实用的工具.
- 在C-SSA的平方封面进一步提高了损害评估的趋势能力.
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