Premium
Construction of a control system for disturbance rejection using a dual observer
Author(s) -
Fuwa Katsuhiko,
Narikiyo Tatsuo,
Funahashi Yasuyuki
Publication year - 2002
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.1138
Subject(s) - control theory (sociology) , disturbance (geology) , subspace topology , unobservable , state observer , dual (grammatical number) , active disturbance rejection control , controller (irrigation) , observer (physics) , computer science , control system , control (management) , mathematics , engineering , artificial intelligence , physics , nonlinear system , art , paleontology , literature , electrical engineering , quantum mechanics , agronomy , econometrics , biology
A well‐known control system which can reduce the adverse effects of disturbances is a disturbance observer. However, in many cases of mechanical systems, system disturbances which do not satisfy the matching condition may be imposed. Therefore, it may be difficult to reduce the adverse effects of the disturbances by the traditional disturbance observer. In this paper, a method of control system synthesis for disturbance rejection using a dual observer is proposed. This method is based on the zeroing induced by the disturbance localization problem. This problem may be solved by dividing the state space into observable subspace and unobservable subspace. As compared with an H ∞ controller based on perfect observation, the usefulness of the proposed control system for disturbance rejection is demonstrated by numerical simulations for a two‐mass spring system. © 2002 Scripta Technica, Electr Eng Jpn, 138(4): 50–60, 2002; DOI 10.1002/eej.1138