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Lungu, Mihai; Lungu, Romulus

Design of full-order observers for systems with unknown inputs by using the eigenstructure assignment. (English) Zbl 1305.93040

Asian J. Control 16, No. 5, 1470-1481 (2014).
Summary: In this paper a full-order observer is suggested in order to achieve finite-time reconstruction of the state vector for a class of linear systems with unknown inputs. The proposed design procedure is a combination of the approaches proposed by S.-F. Lin and A.-P. Wang [Syst. Anal. Modell. Simul. 42, No. 3, 415–428 (2002; Zbl 1060.93022)] and H. Trinh and Q. Ha [Int. J. Syst. Sci. 31, No. 6, 741–749 (2000; Zbl 1080.93627)]. The resulted observer has been improved, from the robustness point of view, by this paper’s authors by using a novel and efficient method; it consists of adding three robustness terms which cancel the negative effect of the uncertainties which can appear in the system. The effectiveness of the suggested design algorithm is illustrated by a numerical example (aircraft lateral motion).

Cited in 6 Documents

MSC:

93B07 Observability
93B60 Eigenvalue problems
93C05 Linear systems in control theory
93C15 Control/observation systems governed by ordinary differential equations

Keywords:

observer; unknown input; algorithm; aircraft motion

Citations:

Zbl 1060.93022; Zbl 1080.93627
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Full Text: DOI

References:

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