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Zero assignment using a dual observer
Author(s) -
Fuwa Katsuhiko,
Narikiyo Tatsuo,
Kando Hisashi
Publication year - 2006
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.20253
Subject(s) - control theory (sociology) , observer (physics) , dual (grammatical number) , zero (linguistics) , state (computer science) , matching (statistics) , state observer , feedback control , pole–zero plot , control system , discrete time and continuous time , control (management) , full state feedback , mathematics , computer science , engineering , control engineering , algorithm , transfer function , artificial intelligence , physics , art , linguistics , philosophy , statistics , literature , quantum mechanics , nonlinear system , electrical engineering
The zero assignment problem is of great importance among significant control synthesis problems. For example, this problem can be formulated as a model matching problem which achieves the desired input–output properties or improves the transient response of closed‐loop systems. In discrete‐time systems, poles and zeros can be assigned by state feedback using two‐delay input control. However, in continuous‐time systems, it is well known that zeros cannot be assigned by the state feedback control law. Taking account of this fact, a synthesis method which can assign the zeros of the control system by state feedback using a dual observer is proposed in this paper. The basic idea is to increase the number of control inputs via a dual observer. Zero assignment can be achieved by state feedback through the increased number of control channels. © 2005 Wiley Periodicals, Inc. Electr Eng Jpn, 154(3): 38–47, 2006; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20253