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Implementation of Closed-Loop Stepper Motor Driver Based on Lead Angle Estimation

Kien Minh Le and Khoa Dang Truong
Le Quy Don Technical University, Hanoi, Vietnam
Abstract—In this work, a position controller for hybrid stepper motors has been successfully designed. The proposed method is based on a lead angle estimator to generate a desired excitation phase of the currents in two phases of a stepper motor. This results in producing the highest motor torque. The step-out problem, which is a common phenomenon of stepper motors when operating in open-loop position control mode with varied load torque, especially at high speed, is overcome. Therefore, the stepper motor can operate in a wide operating speed range. The proposed method is effective in implementation using a Digital Signal Processing (DSP)-based stepper motor drive platform. The position tracking performance of the proposed method was validated by means of experimental comparison with the open-loop position control technique. 
 
Index Terms—closed-loop control, open-loop control, phase advance control, hybrid stepper motors

Cite: Kien Minh Le and Khoa Dang Truong, "Implementation of Closed-Loop Stepper Motor Driver Based on Lead Angle Estimation," International Journal of Electronics and Electrical Engineering, Vol. 6, No. 3, pp. 37-42, September 2018. doi: 10.18178/ijeee.6.3.37-42
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