Adaptive sliding mode observer-differentiator for position and speed estimation of Permanet Magnet Synchronous Motor

Hijazi, Alaa; Shi, Xuefang Lin; Zgorski, Aloïs; Sidhom, Lilia

doi:10.1109/sled.2012.6422799

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…In conventional sliding mode observers, a low pass filter is used for operation of filtering, but using of the low pass filter causes a lag of phase that depends on the angular frequency of the input signal and on the cut frequency of the filter. In order to compensate the phase lag completely, the received information from the real angular velocity must be used and the information given by the estimated angular velocity is not enough for compensating [10] - [14].…”

Section: Introductionmentioning

confidence: 99%

Sliding-Mode Observer for Speed and Position Sensorless Control of Linear-PMSM

Kazraji

Soflayi

Sharifian

2014

Electrical, Control and Communication Engineering

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The paper presents a sliding-mode observer that utilizes sigmoid function for speed and position sensorless control of permanent-magnet linear synchronous motor (PMLSM). In conventional sliding mode observer method there are the chattering phenomenon and the phase lag. Thus, in order to avoid the usage of the low pass filter and the phase compensator based on back EMF, in this paper a sliding mode observer with sigmoid function for detecting the back EMF in a PMLSM is designed to estimate the speed and the position of the rotor. Most of conventional sliding mode observers use sign or saturation functions which need low pass filter in order to detect back electromotive force (back EMF). In this paper a sigmoid function is used instead of discontinuous sign function to decrease undesirable chattering phenomenon. By reducing the chattering, detecting of the back EMF can be made directly from switching signal without any low pass filter. Thus the delay time in the proposed observer is eliminated because of the low pass filter. Furthermore, there is no need to compensate phase fault in position and speed estimating of linear-PMSM. Advantages of the proposed observer have been shown by simulation with MATLAB software.

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Section: Introductionmentioning

confidence: 99%

Sliding-Mode Observer for Speed and Position Sensorless Control of Linear-PMSM

Kazraji

Soflayi

Sharifian

2014

Electrical, Control and Communication Engineering

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Optimal low-stator-frequency avoidance strategy to improve the performances of induction machine sensorless drives

Lefebvre¹,

Digarcher²,

Gauthier³

et al. 2015

2015 IEEE Symposium on Sensorless Control for Electrical Drives (SLED)

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Permanent magnet synchronous drives observability analysis for motion-sensorless control

Koteich

Maloum

Duc

et al. 2015

2015 IEEE Symposium on Sensorless Control for Electrical Drives (SLED)

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Motion-sensorless control techniques of electrical drives are attracting more attention in different industries. The local observability of sensorless permanent magnet synchronous drives is studied in this paper. A special interest is given to the standstill operation condition, where sensorless drives suffer of poor performance. Both, salient and non-salient machines are considered. The results are illustrated using numerical simulations.

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Adaptive sliding mode observer-differentiator for position and speed estimation of Permanet Magnet Synchronous Motor

Cited by 4 publications

References 11 publications

Sliding-Mode Observer for Speed and Position Sensorless Control of Linear-PMSM

Sliding-Mode Observer for Speed and Position Sensorless Control of Linear-PMSM

Optimal low-stator-frequency avoidance strategy to improve the performances of induction machine sensorless drives

Permanent magnet synchronous drives observability analysis for motion-sensorless control

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