Journal
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
Volume 71, Issue -, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIM.2021.3139690
Keywords
Brakes; Indexes; Fault diagnosis; Fault detection; Valves; Relays; Monitoring; Air brake system (ABS); combined index; fault diagnosis; fault isolation; high-speed train (HST); optimization
Funding
- National Natural Science Foundation of China [61803232, 61973041]
- Natural Science Foundation of Shandong Province, China [ZR2019BF021]
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The air brake system of high-speed trains is essential for ensuring passenger safety. A new combined index has been proposed for detecting potential faults, and a fault-recovery-based optimization strategy has been presented for fault isolation.
The high-speed train (HST) air brake system (ABS) is crucial to guarantee a safe and reliable operation environment for passengers on board. Recently, a novel combined index has been proposed for incipient fault detection of the ABS. Following detection, fault isolation is quite desired so as to find out the root causes of the occurred fault and provide valuable information for preventive maintenance and repairs. In this work, the combined index is briefly revisited and its detectability analysis is first formally developed, which can reveal certain detection properties theoretically. Then, a fault-recovery-based optimization strategy is presented for fault isolation purpose. Through theoretical reasoning it is indicated that, with accurately assumed fault direction information, the proposed methodology is able to accomplish correct isolation. Extensive tests on a practical ABS platform demonstrate the effectiveness of the proposed fault detection and isolation approaches.
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