This paper presents a controller for tracking the minimum input power for a
DC motor, enabling the motor for operate at high efficiency over a widerange
of operating points. Also the optimal current ratio between the armature
current and the field current which gives minimum losses was obtained by the
ANN controller without any measurement of parameters. Simulation results are
recorded for step change in the reference speed as well as in the load torque.
One ANN controller has been utilized . The simulation results show good
dynamic performance and an enhancement of the motor efficiency.