Title :
A lifting technique for sampled-data controller reduction for closed-loop transfer function consideration
Author :
Madievski, Anton G. ; Anderson, Brian D O
Author_Institution :
Dept. of Syst. Eng., Australian Nat. Univ., Canberra, ACT, Australia
Abstract :
The problem of controller order reduction aimed at preserving the closed-loop performance of a sampled-data closed-loop system is investigated. Fast sampling of the system at a multiple of the sampling frequency followed by lifting allows capturing of the system´s inter-sample behaviour (albeit with small error) and yields a time-invariant single-rate system; this then permits standard order reduction ideas to be applied. Special weighting functions aimed at preserving the closed-loop transfer function are obtained and weighted balanced truncation is used to reduce the controller
Keywords :
closed loop systems; control system synthesis; sampled data systems; transfer functions; closed-loop performance; closed-loop transfer function; controller order reduction; inter-sample behaviour; lifting technique; sampled-data controller reduction; time-invariant single-rate system; weighted balanced truncation; Adaptive filters; Australia; Control systems; Error correction; Frequency; Robustness; Sampling methods; Systems engineering and theory; Time varying systems; Transfer functions;
Conference_Titel :
Decision and Control, 1993., Proceedings of the 32nd IEEE Conference on
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-1298-8
DOI :
10.1109/CDC.1993.325737
