Title :
Speed control of two-inertia system by PI/PID control
Author_Institution :
Dept. of Comput.-Controlled Mech. Syst., Osaka Univ.
fDate :
6/1/2000 12:00:00 AM
Abstract :
The purpose of this paper is to develop systematic analysis and design methods for a two-inertia system. A conventional proportional-integral 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 present how to improve the damping of the system 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; derivative feedback; load to motor inertia ratio; pole assignments; proportional-integral speed control system; servo control system; servo drive systems; speed control; torsional load; two-inertia system; Control systems; Damping; Electrical equipment industry; Industrial control; Proportional control; Servomotors; Shafts; State feedback; Three-term control; Velocity control;
Journal_Title :
Industrial Electronics, IEEE Transactions on
