Title :
A fuzzy logic tunable speed controller for a rectifier fed PMDC motor drives
Author :
Soliman, Hussein F. ; Sharaf, A.M. ; Mansour, M.M. ; Kandil, S.A. ; El-Shafii, M.H.
Author_Institution :
Dept. of Electr. Eng., New Brunswick Univ., Fredericton, NB, Canada
Abstract :
A novel fuzzy logic (FL) control scheme to regulate the speed of a permanent magnet (PM) DC motor drive via armature voltage control, has been developed. The PMDC motor drive is fed from a 3-phase thyristor controlled rectifier. The proposed FL rule based controller scheme utilizes both motor current and speed errors. The firing delay angle (α) of the 3-phase converter is determined as the output of a modified “weighted centre of area” (WCOA) defuzzifier stage, with an assigned rule base. The controller utilizes novel on-line adjustable defuzzification-weighting criteria to ensure minimum speed overshoot/undershoot as well as reduced motor transient inrush current conditions. The on-line tuning criteria is based on the speed error excursion level
Keywords :
DC motors; controllers; electric drives; fuzzy control; machine control; permanent magnet motors; rectifiers; thyristor applications; velocity control; voltage control; 3-phase converter; 3-phase thyristor controlled rectifier; armature voltage control; assigned rule base; firing delay angle; fuzzy logic control; fuzzy logic tunable speed controller; minimum speed overshoot/undershoot; motor current; motor transient inrush current reduction; on-line tuning criteria; permanent magnet DC motor drive; rectifier fed PMDC motor drives; speed error excursion level; speed errors; weighted centre of area defuzzifier stage; DC motors; Delay; Error correction; Fuzzy logic; Motor drives; Permanent magnet motors; Rectifiers; Surges; Thyristors; Voltage control;
Conference_Titel :
System Theory, 1994., Proceedings of the 26th Southeastern Symposium on
Conference_Location :
Athens, OH
Print_ISBN :
0-8186-5320-5
DOI :
10.1109/SSST.1994.287917
