A Variable-Sampling Controller for Brushless DC Motor Drives With Low-Resolution Position Sensors

This paper proposes a variable-sampling variable structure controller (VSC) for brushless dc (BLDC) motor drives with low-resolution position sensors (Hall sensors). The variable-sampling characteristics arising from the situation where measurements depend on the path-embedded sensors will result in...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2007-10, Vol.54 (5), p.2846-2852
Main Authors: Hung, Chung-Wen, Lin, Cheng-Tsung, Liu, Chih-Wen, Yen, Jia-Yush
Format: Article
Language:English
Subjects:
Brushless DC motors
Brushless motors
Computer simulation
Control systems
D C motors
Direct current
Discrete-time sliding-mode control
Error correction
Feedback
Halls
Motor drives
Motors
Position measurement
Sampling methods
Sensor phenomena and characterization
Sensor systems
Sensors
Sliding mode control
variable structure control (VSC)
variable-sampling systems
Velocity measurement
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Description
Summary:This paper proposes a variable-sampling variable structure controller (VSC) for brushless dc (BLDC) motor drives with low-resolution position sensors (Hall sensors). The variable-sampling characteristics arising from the situation where measurements depend on the path-embedded sensors will result in the uncertainty of the discrete-time models. To circumvent this issue, a modification of the conventional discrete-time VSC control law for BLDC motor drives with Hall sensors is derived to achieve the robustness of speed control. Three measurement error-mitigation methods are also presented to reduce the errors due to low-resolution position feedback. Both simulated and experimental results confirm the effectiveness of the proposed controller and error-mitigation techniques.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2007.901303