Reuse of a Damaged Permanent Magnet Synchronous Motor for Torque Ripple and Acoustic Noise Elimination using a Novel Repetitive Observer

Tang, Mi; Odhano, Shafiq; Formentini, Andrea; Zanchetta, Pericle

Abstract

A lad-used servo permanent magnet synchronous motor (PMSM) has been accidentally damaged due to overcurrent. On one hand, the mechanical damage in the end bearing and break part generates acoustic noise even when rotating the shaft by hand. On the other hand, the back-emf of the motor becomes unbalanced and exceedingly high torque ripple is produced. Such torque ripple results in intolerable speed ripple and will increase the acoustic noise. This paper aims to reuse this damaged motor by adding a repetitive observer (RO) to the existing speed loop, both the speed control performance and the acoustic noise of the damaged motor can become comparable with its healthy version. The RO is functionally the same as a repetitive controller (RC), but the stability of the RO is independent from the feedback loop, while the stability of RC will affect and be affected by the rest of the system. Therefore, RO can be applied for both the healthy motor and the damaged motor. This work opens the possibility of further enhancing the fault-tolerance ability of a healthy motor or even reusing a damaged motor and still achieve high performance.

Citation

Tang, M., Odhano, S., Formentini, A., & Zanchetta, P. (2020). Reuse of a Damaged Permanent Magnet Synchronous Motor for Torque Ripple and Acoustic Noise Elimination using a Novel Repetitive Observer. IEEE Transactions on Industry Applications, 56(4), 3790-3798. https://doi.org/10.1109/tia.2020.2989681

• Journal Article Type: Article
• Acceptance Date: Apr 16, 2020
• Online Publication Date: Apr 22, 2020
• Publication Date: 2020-07
• Deposit Date: Apr 29, 2020
• Publicly Available Date: Apr 29, 2020
• Journal: IEEE Transactions on Industry Applications
• Print ISSN: 0093-9994
• Electronic ISSN: 1939-9367
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 56
• Issue: 4
• Pages: 3790-3798
• DOI: https://doi.org/10.1109/tia.2020.2989681
• Keywords: Control and Systems Engineering; Electrical and Electronic Engineering; Industrial and Manufacturing Engineering
• Public URL: https://nottingham-repository.worktribe.com/output/4360300
• Publisher URL: https://ieeexplore-ieee-org.ezproxy.nottingham.ac.uk/document/9076332
• Additional Information: © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.