Title :
Robust control of interval plants: a time domain method
Author :
Zhang, Y.M. ; Kovacevic, R.
Author_Institution :
Center for Robotics & Manuf. Syst., Kentucky Univ., Lexington, KY, USA
fDate :
7/1/1997 12:00:00 AM
Abstract :
A time-domain algorithm is proposed to control interval plants described by impulse response functions. The closed-loop control actions are determined based on the interval ranges of the model parameters. Robust steady-state performance in tracking a given set-point can be guaranteed if the sign of the static gain is certain despite possible open-loop overshooting, delay, and nonminimum phase of the interval plants. Simulation examples are given to illustrate the performance. An application example in welding process control is also included
Keywords :
closed loop systems; discrete time systems; predictive control; robust control; time-domain analysis; transient response; uncertain systems; welding; SISO systems; closed-loop systems; discrete systems; impulse response; interval plants; overshooting; predictive control; robust control; set point tracking; time domain analysis; uncertain systems; welding process control;
Journal_Title :
Control Theory and Applications, IEE Proceedings -
DOI :
10.1049/ip-cta:19971170