Zhang Tongle,Yang Chuang,Chen Huanxin,et al.Domain-Adversarial Transfer Learning-Driven Adaptive Diagnosis Method for Cross-Condition Multi-Faults in Subway Train Air Conditioning Systems[J].Journal of Refrigeration,
Zhang Tongle,Yang Chuang,Chen Huanxin,et al.Domain-Adversarial Transfer Learning-Driven Adaptive Diagnosis Method for Cross-Condition Multi-Faults in Subway Train Air Conditioning Systems[J].Journal of Refrigeration,DOI:10.12465/issn.0253-4339.20250614001. CSTR: XXXXX.XX.XXX.20250614001.
Domain-Adversarial Transfer Learning-Driven Adaptive Diagnosis Method for Cross-Condition Multi-Faults in Subway Train Air Conditioning Systems
Efficient fault diagnosis of metro air-conditioning systems is essential for reducing energy consumption and ensuring passenger comfort. This paper proposes an unsupervised transfer learning method based on a domain-adversarial neural network (DANN) to address the challenges involving diverse feature distributions and complex faults. Data obtained from three single faults (condenser fouling, ventilation fouling, and refrigerant leakage) and their concurrent combinations are collected from a multifunctional test vehicle under various operating conditions and compressor frequencies. The DANN achieved accuracy values ranging from 97.30%-98.90% for single faults and 77.80%-86.70% for concurrent faults. Uniform Manifold Approximation and Projection (UMAP) and SHapley Additive exPlanations (SHAP) analyses revealed the underlying reasons for the less accurate concurrent fault diagnosis. Compared with the two baseline transfer learning models, DANN exhibited markedly smaller performance fluctuations, maintaining high accuracy even under large feature distribution shifts and overlapping concurrent fault features.
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