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Automatika : journal for control, measurement, electronics, computing and communications, Vol.56 No.4 February 2016. -

A novel speed controller for the trapezoidal three-phase Brushless DC BLDC Motor Drive is proposed using a hybrid fuzzy logic and proportional plus integral PI control. The fuzzy logic control structure is different from conventional fuzzy logic implementations such that it only uses three simple rules based on speed error being either in the positive, negative or zero regions. The controller outputs a reference current, that is enforced through the motor phases by pulsewidth modulation PWM control. The proposed fuzzy logic controller can be used individually in applications requiring lower computation load and accepting small steady state offset. For high performance applications requiring offset free tracking, a PI controller is augmented with the fuzzy logic controller and a simple switching scheme is devised based on error variance to switch the active controller based on operating conditions. The response of the drive system under the proposed composite control structure is compared with the conventional PI based and the sliding mode controllers to demonstrate its improved performance. Simulations studies using detailed models in MATLAB-Simulink-s Simpowersystems toolbox are carried out to show the validity of proposed control.

BLDC Motor; Fuzzy Logic; Speed Control; Hybrid Control

Autor: Adeel Sabir - orcid.org-0000-0002-1010-9101 ; King Fahd University of Petroleum and Minerals, 34464, Dhahran, Saudi Arabia Mahmou

Fuente: http://hrcak.srce.hr/


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