Sensor fault-resilient control of interior permanent-magnet synchronous motor drives

Gilbert Foo Hock Beng, Xinan Zhang, D. Mahinda Vilathgamuwa

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)


In a conventional ac motor drive using field-oriented control, a dc-link voltage, speed, and at least two current sensors are required. Hence, in the event of sensor failure, the performance of the drive system can be severely compromised. This paper presents a sensor fault-tolerant control strategy for interior permanent-magnet synchronous motor (IPMSM) drives. Three independent observers are proposed to estimate the speed, dc-link voltage, and currents of the machine. If a sensor fault is detected, the drive system isolates the faulty sensor while retaining the remaining functional ones. The signal is then acquired from the corresponding observer in order to maintain the operation of the drive system. The experimental results provided verify the effectiveness of the proposed approach.

Original languageEnglish
Article number6784125
Pages (from-to)855-864
Number of pages10
JournalIEEE/ASME Transactions on Mechatronics
Issue number2
Publication statusPublished - 1 Apr 2015
Externally publishedYes


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