Robust sensors-fault-Tolerance with sliding mode estimation and control for PMSM drives

Suneel Kumar Kommuri, Sang Bin Lee*, Kalyana Chakravarthy Veluvolu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

123 Citations (Scopus)


In general, permanent magnet synchronous motor (PMSM) drives require four sensors (one position, one dc-link voltage, and at least two current sensors) to obtain good dynamic control performance. If an unpredictable fault occurs in any of these sensors, the performance of the drive deteriorates or even becomes unstable. Most of the existing works are limited to fault diagnosis of one or two sensors due to complexity. Therefore, to provide a continuous drive operation regardless of any of the sensor faults, an advanced fault-Tolerant control (FTC) scheme that comprises of higher order sliding mode (HOSM) based observers and controllers is proposed. Two HOSM observers and one Luenberger observer are designed to generate the respective residuals and provide the detection of all sensor faults. Moreover, HOSM controllers are developed to ensure finite-Time convergence of the error trajectories after the fault reconfiguration. The proposed FTC scheme reduces the existing chattering phenomenon with good performance in terms of convergence speed and steady-state error. Evaluation results on a three-phase PMSM are presented to validate the effectiveness of the proposed FTC approach.

Original languageEnglish
Pages (from-to)17-28
Number of pages12
JournalIEEE/ASME Transactions on Mechatronics
Issue number1
Publication statusPublished - Feb 2018
Externally publishedYes


  • Fault-Tolerant control (ftc)
  • Observerbased fault detection
  • Reliable control
  • Residual-generation
  • Sliding mode (sm) control

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