Volume : III, Issue : XI, November - 2013

Speed Control of Brushless Dc Motor Using Fuzzy Controller

G. R. P. Lakshmi, G. R. Puttalakshmi, S. Paramasivam

Abstract :

This paper presents a control scheme of a fuzzy logic for the ushless direct current (BLDC) permanent magnet motor drives. The mathematical model of BLDC motor and fuzzy logic algorithm is derived. The controller is designed to track variations of speed references and stabilizes the output speed during load variations. The BLDC has some advantages compare to the other type of motors, however the nonlinearity of the BLDC motor drive characteristics, because it is difficult to handle by using conventional proportional–integral (PI) controller. The BLDC motor is fed from the inverter where the rotor position and current is the input. In order to overcome this main problem, the fuzzy logic control is becomes the suitable control. The effectiveness of the proposed method is verified by developing the simulation model in MATLAB–Simulink. The simulation results show that the proposed fuzzy logic controller (FLC) produce significant improvement in control and performance compare to the PI controller for both condition controlling speed reference variations and load disturbance variations. Fuzzy logic is introduced in order to suppress the chattering and enhancing the robustness of the control system. Fuzzy boundary layer is developed to provide smoother transition to the equivalent control. Smaller overshoot in the speed response and much better disturbance rejecting capabilities

Keywords :

Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

G.R.P.Lakshmi, G.R.Puttalakshmi, S.Paramasivam / Speed Control of Brushless Dc Motor Using Fuzzy Controller / Indian Journal of Applied Research, Vol.3, Issue.11 November 2013

Number of Downloads : 1097

References :