Open AccessImproved brushless DC motor speed controller with digital signal processor
Author(s) -
Kahveci H.,
Okumuş H.I.,
Ekici M.
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.0609
Subject(s) - electronic speed control , digital signal processor , control theory (sociology) , dc motor , controller (irrigation) , fuzzy logic , pid controller , computer science , digital signal processing , control engineering , digital control , signal (programming language) , open loop controller , engineering , electronic engineering , control (management) , computer hardware , electrical engineering , artificial intelligence , temperature control , agronomy , programming language , biology , closed loop
Brushless motors are used in many applications owing to their advantages. In most of the applications, conventional control methods with a hysteresis band (HB) controller are used. An improved speed and current control scheme for brushless DC motors with a trapezoidal shape back EMF is presented. Instead of the conventional HB and proportional‐integral (PI) controllers, a fuzzy logic controller that is independent of motor equations and based on expert knowledge has been employed for current and also for speed regulation; thereby, the disadvantages of the HB are eliminated and the overall performance of the controller is enhanced. Experimental studies have been carried out with a TMS320F2812 digital signal processor. The presented control scheme has been validated through comparative experiments with the fuzzy logic speed and HB current controller. The results show that the proposed control scheme operates satisfactorily and provides a constant switching frequency.