Title :
A parallel observer system for multirate state estimation
Author :
Thein, May-Win L. ; Misawa, Eduardo A.
Author_Institution :
Sch. of Mech. & Aerosp. Eng., Oklahoma State Univ., Stillwater, OK, USA
Abstract :
Presents the parallel observer system (POS), a multi-rate estimation technique for discrete time systems, to compensate for output measurements that are available only periodically and for systems with matched and unmatched uncertainties/disturbances. A stability proof and error bounds are provided, given maximum bounds of the uncertainties/disturbances. An example is used to compare the POS to two single rate Luenberger observers running at different rates and which have measurements every appropriate sample period
Keywords :
discrete time systems; multivariable systems; observers; parallel algorithms; stability; uncertain systems; POS; discrete time systems; error bounds; matched disturbances; matched uncertainties; multi-rate state estimation; output measurement compensation; parallel observer system; single rate Luenberger observers; stability proof; unmatched disturbances; unmatched uncertainties; Aerospace engineering; Control systems; Equations; Observers; Prediction methods; Sampling methods; Stability; State estimation; Time measurement; Uncertainty;
Conference_Titel :
American Control Conference, 1999. Proceedings of the 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4990-3
DOI :
10.1109/ACC.1999.786244
