| 邹 翔,郭 瑜.基于 IAS 精确估计的太阳轮齿面剥落检测方法研究[J].电子测量与仪器学报,2023,37(4):107-114 |
| 基于 IAS 精确估计的太阳轮齿面剥落检测方法研究 |
| Research on the tooth surface spalling diagnosis method of sun gear based on instantaneous angle signal accuracy estimation |
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| DOI： |
| 中文关键词: 故障检测 行星齿轮传动 瞬时角速度信号 多项式微分估计 高阶 Hermite 插值 局部同步拟合 |
| 英文关键词:fault detection epicyclic gear transmission instantaneous angle signal polynomial differential estimation high order
Hermite interpolation local synchronous fitting |
| 基金项目:国家自然科学基金(52165067)、云南省重点领域科技计划项目(202002AC080001)资助 |
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| 中文摘要: |
| 瞬时角速度(instantaneous angular speed, IAS)信号的估计精度易受编码器自身误差影响,影响其故障检测结果。 针对
上述问题提出了一种局部多项式微分估计方法对 IAS 信号进行估计。 首先通过局部多项式微分抑制编码器细分误差产生的锯
齿状噪声和估计误差导致的信号不连续问题,实现了 IAS 信号的高精度获取,然后使用精确估计的 IAS 信号通过局部同步拟合
技术提取太阳轮故障特征。 通过实验和仿真说明,本文提出的局部多项式微分估计能较好地抑制编码器误差导致的 IAS 信号
噪声,提高 IAS 信号的信号比,结合局部同步拟合能够有效地提取太阳轮齿面剥落故障特征。 |
| 英文摘要: |
| The estimation accuracy of the instantaneous angular speed ( IAS) signal is easily affected by the encoder’ s error, which
affects its fault detection results. Because of such problems, a local polynomial differential estimation method was proposed to estimate
the IAS signal. First, the local polynomial differential was used to suppress the sawtooth noise generated by the encoder subdivision
errors and the signal discontinuity caused by the estimation errors, so high-precision acquisition of the IAS signal was achieved, and
finally, the accurately estimated IAS signal was used to extract the sun gear fault characteristics by local synchronous fitting technique.
Through experiments and simulations, it is shown that the local polynomial differential estimation proposed in this paper can effectively
suppress the IAS signal noise caused by encoder errors, improve the signal to noise ratio of the IAS signal, and combine local
synchronous fitting to effectively extract the features of the sun gear tooth surface spalling fault. |
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