Abstract
This paper deals with the position control of DC servomotor. A modified model reference adaptive control (MMRAC) algorithm is proposed. This algorithm preserves all the best features of MRAC such as Lyapunov stability, and asymptotic convergence of the tracking error. In addition, dynamics of DC servomotor, load changes, noises, and disturbances are taken into account and assumed to be completely unknown. The system is examined under various uncertainties such as load variations, noisy measurements and field disturbances. Experimental results have shown that the proposed control algorithm is more robust than time delay control, and conventional PID controller. >
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