Title :
Approximation of time-delay systems
Author :
Al-Amer, S.H. ; Al-Sunni, F.M.
Author_Institution :
Dept. of Syst. Eng., King Fahd Univ. of Pet. & Miner., Dhahran, Saudi Arabia
Abstract :
We propose a new method for approximating time-delays in dynamical systems. A weighted H∞ norm criterion is minimized to obtain rational approximation of e-sd. We report the approximation in a diagram relating both the amount of time delay and the bandwidth to the order of the approximating rational function for a given level of infinity norm. The obtained approximations are compared to the widely used Pade´s approximation. Examples are used for illustrations
Keywords :
H∞ optimisation; approximation theory; delay systems; minimisation; bandwidth; dynamical systems; rational approximation; rational function; time-delay system approximation; weighted H∞ norm criterion minimization; Bandwidth; Control systems; Cutoff frequency; Delay effects; H infinity control; Minerals; Petroleum; Systems engineering and theory; Transfer functions; Weight control;
Conference_Titel :
American Control Conference, 2000. Proceedings of the 2000
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-5519-9
DOI :
10.1109/ACC.2000.878631
