A scalable IoT-integrated neural network approach for real-time fault detection in electric vehicle power trains
Аннотация
The performance of electric vehicle (EV) power trains is essential to minimise the unanticipated downtime and costs in the smart mobility age. In this research, an experimentally validated IoT framework is presented for predictive maintenance of EV powertrains for early fault detection using vibration, acoustic and current measurements and an Artificial Neural Network (ANN). A scaled-down EV powertrain, such as a Brushless DC (BLDC) motor, coupling, gearbox and variable load were developed to simulate various scenarios. Common faults, including gear tooth fracture, shaft unbalance, misalignment and bearing wear, were deliberately induced for fault simulation. Temporal and frequency features (RMS, kurtosis, skewness and spectral entropy) of the multi-sensor data were used to train a feedforward artificial neural network (ANN) classifier. The trained model achieved an accuracy of 98.4% under normal conditions and maintained high fault resilience (90.4%) under very noisy conditions (0 dB SNR) when compared to conventional Support Vector Machine and Random Forest classifiers. The entire sensor-to-cloud system implemented with an ESP32 platform (MQTT) and a Node-RED dashboard achieved an average sensing-to-diagnosis latency of 190 ms, which meets the real-time diagnostic needs. Results from a fleet-level simulation analysis indicate that the proposed system can save around 40% unplanned downtime and result in a 10% decrease in maintenance labor demand when representing typical maintenance activities. These projections are based on experimentally proven fault detection performance and should be validated in the field over extended periods of time. The findings demonstrate that the proposed ANN-based IoT system provides a cost-effective, energy-efficient and scalable approach for real-time predictive maintenance of EV powertrains, facilitating its integration into smart and sustainable transport systems.
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