Design of Adaptive SOSM Controller Subject to Disturbances With Unknown Magnitudes

Mei, Keqi; Qian, Chunjiang; Ding, Shihong

doi:10.1109/tcsi.2023.3241291

Cited by 12 publications

(1 citation statement)

References 47 publications

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“…Currently, model-based approaches are generally recognized as effective methods for the sensorless PMSM control strategy, especially during the medium-and high-speed ranges [10][11][12][13]. Several model-based approaches have recently been explored, such as the sliding mode observer (SMO) [14][15][16][17][18][19], the model-referenced adaptive system [20], and the extended Kalman filter [21], among others. Among these methods, the SMO is widely used for sensorless control due to its powerful robustness and rapid convergence.…”

Section: Introductionmentioning

confidence: 99%

Sensorless control of permanent magnet synchronous motor based on fixed‐time terminal sliding mode observer

Wei,

Mei,

Ding

et al. 2023

Asian Journal of Control

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In the sensorless control of a sliding mode observer (SMO)‐based permanent magnet synchronous motor (PMSM), a large gain is required to ensure the stability of the sliding motion. Nonetheless, this can lead to the unexpected chattering and degrade the precision of position estimation. To overcome this trouble, we have proposed a fixed‐time nonsingular terminal SMO (NTSMO). The convergence time is independent of the initial value. Firstly, a fixed‐time nonsingular terminal sliding mode surface is designed so that the current observation error fixed‐time converges to zero, and the singularity issue can be averted. Secondly, via the phase‐locked loop tactic, the rotor position and speed are calculated from the measured back electromotive force. Thirdly, a Lyapunov function‐based proof is utilized to assure the stability of the observer. Finally, the validity of this method is confirmed by simulation tests and experiment results.

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Section: Introductionmentioning

confidence: 99%

Sensorless control of permanent magnet synchronous motor based on fixed‐time terminal sliding mode observer

Wei,

Mei,

Ding

et al. 2023

Asian Journal of Control

Self Cite

View full text Add to dashboard Cite

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Design and application of finite‐time tracking control for autonomous ground vehicle affected by external disturbances

Chen,

Pan,

Tang

et al. 2024

Intl J Robust & Nonlinear

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Path tracking plays a critical role in autonomous driving for autonomous ground vehicle (AGV). However, AGV faces challenges in accurate tracking and chatter reduction due to external disturbances, making it difficult to meet the tracking performance requirements. Currently, sliding mode control (SMC) and disturbances observer are primarily employed for disturbance estimation. However, ensuring finite‐time robust control remains a significant challenge. To ensure rapid convergence of tracking errors and effective disturbance rejection, this paper proposed a novel non‐singular fast terminal sliding mode (NFTSM) control scheme based on finite‐time disturbance observation (FDO). First, a novel NFTSM controller based on AGV dynamic model is developed to achieve fast convergence of tracking errors. Then, to mitigate disturbances effects and suppress chatter, an innovative FDO method is employed. Finally, based on FDO, the NFTSM‐FDO establishes a control scheme that enhances disturbances suppression and accelerates convergence. The simulation and experimental results demonstrate the innovation of the proposed method. Compared with other SMC methods, the results validate the effectiveness and advantages of the proposed approach, exhibiting fast convergence and superior tracking performance.

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A state-constrained second-order sliding mode control for permanent magnet synchronous motor drives

Li,

Mei

2024

Nonlinear Dyn

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Design of Adaptive SOSM Controller Subject to Disturbances With Unknown Magnitudes

Cited by 12 publications

References 47 publications

Sensorless control of permanent magnet synchronous motor based on fixed‐time terminal sliding mode observer

Sensorless control of permanent magnet synchronous motor based on fixed‐time terminal sliding mode observer

Design and application of finite‐time tracking control for autonomous ground vehicle affected by external disturbances

A state-constrained second-order sliding mode control for permanent magnet synchronous motor drives

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