Title :
Speed control of two-inertia system by PI/PID control
Author :
Zhang, Guoguang ; Furusho, Junji
Author_Institution :
Dept. of Comput. Controlled Mech. Syst., Osaka Univ., Japan
Abstract :
Our purpose is to develop systematic analysis and design methods for a two-inertia system. A conventional PI speed control system with a torsional load is redesigned, and the damping characteristic of the system is derived and analyzed. It is shown that the dynamic characteristic of the system strongly depends on the inertia ratio of load to motor. Three kinds of typical pole assignments with identical radius/damping coefficient/real-part are applied and compared, and the merits of each pole assignment design are concluded. Furthermore, for small inertia ratio, we show how to improve the damping by a derivative feedback of motor speed
Keywords :
angular velocity control; damping; feedback; machine control; motor drives; pole assignment; servomotors; three-term control; two-term control; PI/PID control; damping characteristic; damping coefficient; dynamic characteristic; load to motor inertia ratio; pole assignment design; pole assignments; servo control system; small inertia ratio; speed control; speed derivative feedback; torsional load; two-inertia system; Control systems; Damping; Pi control; Resonance; Servomotors; Shafts; State feedback; Three-term control; Torque; Velocity control;
Conference_Titel :
Power Electronics and Drive Systems, 1999. PEDS '99. Proceedings of the IEEE 1999 International Conference on
Print_ISBN :
0-7803-5769-8
DOI :
10.1109/PEDS.1999.794627
