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Lowering Orders of ...
Lowering Orders of Derivatives in Non-linear Consistency Relations : Theory and Simulation Examples
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- Frisk, Erik, 1971- (författare)
- Linköpings universitet,Fordonssystem,Tekniska fakulteten
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- Åslund, Jan, 1971- (författare)
- Linköpings universitet,Fordonssystem,Tekniska fakulteten
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(creator_code:org_t)
- Linköping : Dept. of Electrical Engineering, Linköpings Universitet, Sweden, 2003
- Engelska 15 s.
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Serie: LiTH-ISY-R, 1400-3902 ; 2547
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Abstract
Ämnesord
Stäng
- Consistency relations are often used to design residual generators based on non-linear process models. A main difficulty is that they generally include time differentiated versions of known or measured signals which are difficult to estimate in a noisy environment, especially higher order derivatives. The main results of this paper show how to lower, or if possible avoid, the need to estimate derivatives of known signals in order to compute the residual. This is achieved by rewriting the problem into an integrability problem using state-space realization theory. An attractive feature of the approach is that general differential algebraic system descriptions can be handled in the same way as for example ordinary differential equations and also that stability of the residual generator is always guaranteed.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- Diagnosis
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