Position control of a brushless DC motor without velocity measurements

1995 ◽  
Vol 142 (2) ◽  
pp. 113 ◽  
Author(s):  
J. Hu
Keyword(s):  
Position Control ◽  
Dc Motor ◽  
Brushless Dc Motor ◽  
Velocity Measurements ◽  
Brushless Dc

scholarly journals Nonlinear Position Control with Augmented Observer in Brushless DC Motor

Mathematics ◽  
2021 ◽  
Vol 9 (20) ◽  
pp. 2553
Author(s):  
Youngwoo Lee ◽  
Wonhee Kim
Keyword(s):  
Position Control ◽  
Tracking Error ◽  
Dc Motor ◽  
Brushless Dc Motor ◽  
State Variables ◽  
Brushless Dc ◽  
Current Controller ◽  
Position Controller ◽  
Error Dynamics ◽  
A Current

In this paper, position control using both a nonlinear position controller and a current controller with an augmented observer is proposed for a Brushless DC motor. The nonlinear position controller is designed to improve the position tracking performance based on the tracking error dynamics. The current controller is developed to track the desired currents generated from the desired torque, which is calculated based on the nonlinear position controller. The augmented observer is designed to obtain the knowledge of both state variables and disturbance. Closed-loop stability is proven through the Lyapunov theorem. Simulations were performed to evaluate the effectiveness of the proposed method.

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