SENSORLESS VELOCITY CONTROL FOR THE SERIES CONNECTED WOUND STATOR DC MOTOR

A controller is designed to produce velocity trajectory following in a wound stator D.C. electric motor wired in a series configuration with out the need for measurements of the mechanical states (i.e. sensorles s control). The work represents a modification of a previously designe d controller for the separately excited D.C, motor to address the more complicated problem of controlling the series connected motor. That i s, a previous controller, which was designed in the framework of the o bserved integrator backstepping technique, is modified to reflect the peculiarities of the series connected motor dynamics. These modificati ons preclude a rigorous stability result; however, the control is vali dated through the use of a velocity tracking experiment on a commercia l motor.