In the present scenario, utilization of BLDC drives are
increasing rapidly, as a result of more efficiency, more power density,
normal to control and great inertia torque ratio. This rag proposes a
concept of senso rless control of drive using Fuzzy based DTC system.
An indirect flux control proposed in this rag is similar to the direct
torque controller for controlling of BLDC motor by the reference
signals from the direct axis currents. A fuzzy regulator also proposed in
this rag for better controlling of brushless DC drive. Simulink/Mat lab
is used to test the proposed DTC-Fuzzy based BLDC drive
Keywords : BLDC Motor, Fuzzy Controller, DTC technique and PWM
 Salih Baris Ozturk, Member, IEEE, and Hamid A. Toliyat, Fellow, “Direct Torque and Indirect Flux Control of Brushless DC
Motor” in IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 16, NO. 2, APRIL 2011.
 Atef Saleh Othman Al-Mashak- beh “Proportional Integral and Derivative Control of Brushless DC Motor” European Journal of
Scientific esearchVol.35 No.2 (2009), pp.198-203.
 Microchip Technology, “Brushless DC (BLDC) motor fundamentals”, application Note, AN885, 2003.
 Gwo-Rueyyu and Rey-Chue Hwang “Optimal PID Speed Control of Brushless DC Motors Using LQR approach” IEEE International
Conference on systems, Man and Cybernetics, 2004, pp.473-478.
 C.Gencer and M.Gedikpinar “Modelling and Simulation of BLDCM using Mat lab/Simulink” Journal of Applied Sciences 6(3):688-
 Allan R. Hambley, “Electrical Engineering Principles and Application”, Prentice Hall, New Jersey 1997.
 Rivera, D.E.skogestad, S.Morari M.IMC 4: PID controller design. Ind. Engchem. Processdes. Dev 1986, 25,252.
 Gaddam Mallesham, AkulaRajani,”Automatic Tuning of PID Controller using Fuzzy Logic”, Internal Conference on Development
and Application Systems, 2006, pp.120-127,
 K.Ang, G.Chong, and Y. Li, “PID control system analysis, design, and technology,” IEEETrans. Control System Technology, vol.13,
pp 559-576, July 2005.
 Bergh, L.G. MAC Gregory. J.F. constrained minimum variance- Internal model structure and robustness properties.IND. Eng chem.
Res.1986, 26, 1558.