Disturbance Observer for Estimating Higher Order Disturbances in Time Series Expansion

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In the note, a generalized disturbance observer capable of estimating higher order disturbances in the time series expansion is newly proposed. Initiated from a constant disturbance observer, we extend it systematically to cope with ramp disturbance and general order disturbances. The generalized form for disturbance observer exhibits the novel structure incorporating the system model and integrals. To be practical, the noisy measurement and the performance in the frequency domain are addressed. In addition, for a class of linear systems, an output-based disturbance observer of reduce order is newly derived from the proposed full state disturbance observer, and its potential applicability will be demonstrated by an example.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2010-08
Language
English
Article Type
Article
Keywords

DESCRIPTOR SYSTEMS; INTEGRAL OBSERVER; INPUT ESTIMATION; FAULT-DETECTION; DESIGN; STATE; FRICTION; MODEL

Citation

IEEE TRANSACTIONS ON AUTOMATIC CONTROL, v.55, pp.1905 - 1911

ISSN
0018-9286
DOI
10.1109/TAC.2010.2049522
URI
http://hdl.handle.net/10203/174394
Appears in Collection
ME-Journal Papers(저널논문)
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