An enhanced sensorless control based on active disturbance rejection controller for a PMSM system: design and hardware implementation
Article publication date: 26 May 2022
Issue publication date: 19 July 2022
This paper mainly aims to deal with the problems of uncertainties including modelling errors, unknown dynamics and disturbances caused by load mutation in control of permanent magnet synchronous motor (PMSM).
This paper proposes an enhanced speed sensorless vector control method based on an active disturbance rejection controller (ADRC) for a PMSM. First, a state space model of the PMSM is obtained for the field orientation control strategy. Second, a sliding mode observer (SMO) based on back electromotive force (EMF) is introduced to replace the encode to estimate the rotor flux position angle and speed. Third, an infinite impulse response (IIR) filter is introduced to eliminate high frequency noise mixed in the output of the sliding mode observer. In addition, a speed control method based on an extended state observer (ESO) is proposed to estimate and compensate for the total disturbances. Finally, an experimental set-up is built to verify the effectiveness and superiority of the proposed ADRC-based control method.
The comparative experimental results show that the proposed speed sensorless control method with the IIR filter can achieve excellent robustness and speed tracking performance for PMSM system.
An enhanced sensorless control method based on active disturbance rejection controller is designed to realize high precision control of the PMSM; the IIR filter is used to attenuate the chattering problem of traditional SMO; this method simplifies the system and saves the total cost due to the speed sensorless technology.
The use of sensorless can reduce costs and be more beneficial to actual industrial application.
The proposed enhanced speed sensorless vector control method based on an ADRC with the IIR filter enriches the control method of PMSM. It can ameliorate system robustness and achieve excellent speed tracking performance.
This work was supported in part by the National Natural Science Foundation of China (Grant nos. 61903322, 61773335), State Key Laboratory of Mechanics and Control of Mechanical Structures (Grant No. MCMS-E-0520G01), Six Talent Peaks Foundation of Jiangsu Provincial (Grant no. KTHY2018038).
Declaration of conflicting interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship and/or publication of this article.
Lu, H., Li, S., Feng, B. and Li, J. (2022), "An enhanced sensorless control based on active disturbance rejection controller for a PMSM system: design and hardware implementation", Assembly Automation, Vol. 42 No. 4, pp. 445-457. https://doi.org/10.1108/AA-01-2022-0016
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