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A New Position and Speed Estimation Scheme for Position Control of PMSM Drives Using Low-Resolution Position Sensors

Ni, Qinan; Yang, Ming; Odhano, Shafiq Ahmed; Tang, Mi; Zanchetta, Pericle; Liu, Xiaosheng; Xu, Dianguo

A New Position and Speed Estimation Scheme for Position Control of PMSM Drives Using Low-Resolution Position Sensors Thumbnail


Authors

Qinan Ni

Ming Yang

Shafiq Ahmed Odhano

Mi Tang

Xiaosheng Liu

Dianguo Xu



Abstract

A new position control method for permanent magnet synchronous motor (PMSM) drive with a low-resolution encoder is proposed in this paper. Three binary Hall position sensors are utilized to realize a moderate-performance position control system for the consideration of economy and simplicity in servo application. Compared with sensorless control, the usage of binary Hall position sensors is a guarantee of both control performance and low cost. However, the low resolution of the Hall sensor will heavily deteriorate the accuracy of the position and speed calculation. Such drawback can be effectively minimized by using appropriate position and speed estimation schemes. With the help of polynomial fitting and state observer techniques, a solution is provided to realize semi-closed loop control by treating the position and speed estimators as separate systems. The performance can be improved (1) by proposing a polynomial fitting scheme with least squares method, high-resolution rotor-position predictor can be derived by fitting the predefined position data from binary Hall position sensors in a linear or quadratic manner; (2) by adopting the dual-sampling-rate observer, instantaneous speed can be estimated at each control cycle and the estimation error is corrected once a new measurement form the Hall arrives. Furthermore, a nonlinear position control algorithm is introduced to increase standstill stability. Extensive experimental results are given to demonstrate the feasibility of the proposed method and its superiority over conventional methods.

Citation

Ni, Q., Yang, M., Odhano, S. A., Tang, M., Zanchetta, P., Liu, X., & Xu, D. (2019). A New Position and Speed Estimation Scheme for Position Control of PMSM Drives Using Low-Resolution Position Sensors. IEEE Transactions on Industry Applications, 55(4), 3747-3758. https://doi.org/10.1109/tia.2019.2904934

Journal Article Type Article
Acceptance Date Mar 12, 2019
Online Publication Date Mar 13, 2019
Publication Date 2019
Deposit Date Jul 8, 2019
Publicly Available Date Mar 28, 2024
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 55
Issue 4
Pages 3747-3758
DOI https://doi.org/10.1109/tia.2019.2904934
Keywords Binary Hall position sensors, Dual-sampling-rate observer, Least squares (LS), Polynomial fitting, Position control
Public URL https://nottingham-repository.worktribe.com/output/2286148
Publisher URL https://ieeexplore.ieee.org/document/8666752
Additional Information © 2019 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.

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