The invention relates to the technical field of fault diagnosis, in particular to an intelligent cabin fault diagnosis method under a small sample and a medium, and the method comprises the following steps: 1, carrying out the data collection through a vibration sensor disposed on a specified device of a cabin, and obtaining the vibration signals of the specified device in a normal state and in different fault states; 2, judging whether the vibration signal is small sample data or not through a small sample data judging device; the kurtosis principle is used for carrying out feature alignment on original vibration signals, and the model generation quality and the diagnosis precision are improved. A one-dimensional vibration signal is converted into a two-dimensional grey-scale map, higher-dimensional features can be extracted, and model convergence and final diagnosis precision are better facilitated. The C-CGAN model is improved by using an asynchronous updating algorithm, the stability of the model is enhanced, and the model can better enter Nash equilibrium. The Ghost model is used for replacing a CNN model in the C-CGAN, intrinsic features can be better extracted, and the risk that the model falls into gradient disappearance is reduced.
本发明涉及故障诊断技术领域,具体涉及一种小样本下的智能机舱故障诊断方法及介质,包括以下步骤:步骤1:通过安装在机舱指定设备上的振动传感器进行数据采集,获取所述指定设备正常状态下和不同故障状态下的振动信号;步骤2:通过小样本数据判断器判断振动信号是否为小样本数据;使用峭度原理对原始振动信号进行特征对齐,提高模型生成质量与诊断精度。将一维振动信号转换为二维灰度图,能够提取到更高维特征,更有利于模型收敛与最终诊断精度。使用非同步更新算法对C‑CGAN模型进行改进,增强模型的稳定性,使得模型能够更好地进入纳什平衡。使用Ghost模型取代C‑CGAN中的CNN模型,能够更好地提取本征特征,减少模型陷入梯度消失的风险。
Intelligent cabin fault diagnosis method under small sample and medium
一种小样本下的智能机舱故障诊断方法及介质
2024-03-22
Patent
Elektronische Ressource
Chinesisch
IPC: | G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES , Messen von mechanischen Schwingungen oder Ultraschall-, Schall- oder Infraschallwellen / G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen |
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