DOI QR코드

DOI QR Code

Position Sensorless Control of BLDC Motors Based on Global Fast Terminal Sliding Mode Observer

Wang, Xiaoyuan;Fu, Tao;Wang, Xiaoguang

  • 투고 : 2015.02.10
  • 심사 : 2015.06.18
  • 발행 : 2015.11.20

초록

The brushless DC motor (BLDCM) has many advantages. As a result, it is widely used in electric vehicle (EV) drive systems. To improve the reliability of the motor control system, a position sensorless control strategy based on a sliding mode observer (SMO) is proposed. The global fast terminal sliding mode observer (GFTSMO) is proposed to enhance the control performance of the SMO control system. The advantages of the linear sliding mode and the nonsingular terminal sliding mode (NTSM) are combined in the control strategy. The convergence speed of the system state is enhanced. The motor commutation point is obtained with the observation of the back EMF, and the instantaneous torque value of the motor is calculated. Therefore, the position sensorless control of the BLDCM is realized. Experimental results show that the proposed control strategy can improve the convergence speed, dynamic characteristics and robustness of the system.

키워드

Brushless DC motor (BLDCM);Electric vehicle (EV);Global fast terminal sliding mode observer (GFTSMO);Instantaneous torque control;Position sensorless control

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피인용 문헌

  1. Torque ripple reduction of brushless DC motor with harmonic current injection based on integral terminal sliding mode control 2017, https://doi.org/10.6113/JPE.2015.15.6.1559
  2. Nonsingular Fast Terminal Sliding Mode Control for a Bearingless Induction Motor vol.5, 2017, https://doi.org/10.6113/JPE.2015.15.6.1559