<p>This study illustrates a new control method that utilizes the sliding mode (SM)-style speed controller with the corresponding proportional-integral (PI)-style current controller to accurately follow a reference mechanical angular speed of Permanent Magnet Synchronous Motors (PMSM). An NFTSM-style manifold is utilized with the NRL to achieve a chattering-free movement in the proposed SM-style controller. By using NFTSM strategies, we avoid any complications with sliding surfaces and reaching laws, leading to improved convergence, accuracy, and minimized chattering. The PI controller compensates for any errors, resulting in a very accurate qd-stator voltage for the motor. It is the way this paper introduces the new NFTSM surface by explaining its advantages over a traditional sliding surface and presenting some corrections to solve known disadvantages. The TRL is criticized, while the NRL is proposed and improved in dynamic performance; experiments are carried out using the proposed method and also proved that the method showed finer speed tracking and current control performance. The results confirm that the proposed control scheme is robust and reliable, hence it has a good potential for practical applications in PMSM drives. This paper contributes to the literature by providing an exhaustive analysis of the NFTSM surface and NRL, opening new avenues for developing novel motor control strategies.</p>

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A Finite-Time Sliding Mode Control Strategy with a New Reaching Law for Controlling the Speed of a Permanent Magnet Synchronous Motor

  • Xiaoxiong Tang

摘要

This study illustrates a new control method that utilizes the sliding mode (SM)-style speed controller with the corresponding proportional-integral (PI)-style current controller to accurately follow a reference mechanical angular speed of Permanent Magnet Synchronous Motors (PMSM). An NFTSM-style manifold is utilized with the NRL to achieve a chattering-free movement in the proposed SM-style controller. By using NFTSM strategies, we avoid any complications with sliding surfaces and reaching laws, leading to improved convergence, accuracy, and minimized chattering. The PI controller compensates for any errors, resulting in a very accurate qd-stator voltage for the motor. It is the way this paper introduces the new NFTSM surface by explaining its advantages over a traditional sliding surface and presenting some corrections to solve known disadvantages. The TRL is criticized, while the NRL is proposed and improved in dynamic performance; experiments are carried out using the proposed method and also proved that the method showed finer speed tracking and current control performance. The results confirm that the proposed control scheme is robust and reliable, hence it has a good potential for practical applications in PMSM drives. This paper contributes to the literature by providing an exhaustive analysis of the NFTSM surface and NRL, opening new avenues for developing novel motor control strategies.