Title :
A new double sided frequency weighted problem formulation
Author :
Houlis, Pantazis ; Sreeram, Victor
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Western Australia, Crawley, WA, Australia
Abstract :
In this paper, the solution to controller reduction problem for systems with a feedback controller via a double-sided frequency weighted model reduction technique is considered. A new method with a fast algorithm for finding low order controllers is proposed. This algorithm is based on new frequency weights derived using closed-loop system approximation criterion. The formulas of frequency weights are obtained in terms of the plant, the original controller and a free parameter. By varying the free parameter in the resulting two-sided frequency weighted model reduction problem, frequency weighted error can be significantly reduced to yield more accurate low-order controllers.
Keywords :
approximation theory; closed loop systems; feedback; reduced order systems; closed-loop system approximation criterion; controller reduction problem; double-sided frequency weighted model reduction technique; double-sided frequency weighted problem formulation; feedback controller systems; free-parameter system; frequency weighted error reduction; low-order controllers; two-sided frequency weighted model reduction problem; Approximation error; Closed loop systems; Equations; Frequency control; Mathematical model; Reduced order systems; Transfer functions;
Conference_Titel :
Control Conference (ECC), 2009 European
Conference_Location :
Budapest
Print_ISBN :
978-3-9524173-9-3
