Title :
Tracking errors: Practical alternatives for digital servo systems
Author :
Perdikaris, George A. ; Rao, A.S.
Author_Institution :
Wisconsin Univ., Kenosha, WI, USA
Abstract :
Some practical alternatives for minimizing steady-state errors when tracking various types of inputs with digital servo systems are presented. Error correction is accomplished by either feedforward control action(s) or by manipulating the reference (setpoint) input, using the steady-state error values expressed as functions of controller gains. Results obtained analytically are verified experimentally using a microcomputer-controlled motor drive system
Keywords :
DC motors; digital control; electric drives; machine control; microcomputer applications; servomechanisms; tracking; DC motors; controller gains; digital servo systems; feedforward control; microcomputer-controlled motor drive system; steady-state error; steady-state errors; tracking errors; Control systems; Error correction; PD control; Pi control; Proportional control; Servomechanisms; Steady-state; Three-term control; Transfer functions; Upper bound;
Conference_Titel :
Industrial Electronics Society, 1990. IECON '90., 16th Annual Conference of IEEE
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-87942-600-4
DOI :
10.1109/IECON.1990.149159
