“…A conventional controller like the proportional-integral-derivative (PID) controller requires an accurate mathematical model describing the system, but practically obtaining the exact mathematical model is a cumbersome process (Weerasooriya and El-Sharkavi, 1991). In recent years, many control techniques have been introduced in the modern drive systems using PID controllers (Wu et al, 2005;Bagis, 2007), neural networks (Narendra and Parthasarathy, 1990;Rahman and Hoque, 1997;Lee and Teng, 2000;Rubaai et al, 2000), an adaptive controller using particle swarm optimization algorithm and a neuro-fuzzy controller (Rubaai et al, 2002;Awadallah et al, 2009), a multi-layer artificial neural network (Weerasooriya and El-Sharkavi, 1991;El-Sharkawi et al, 1994), hybrid controllers (Rubaai et al, 2001(Rubaai et al, , 2008, fuzzy logic controller (FLC) (Shanmugasundram et al, 2009a;Rajan et al, 2010) and compensator (Shanmugasundram et al, 2008). These control techniques are usually based on system model parameters.…”