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- Title
H−/L∞ fault detection for linear discrete‐time descriptor systems.
- Authors
Han, Weixin; Wang, Zhenhua; Shen, Yi; Liu, Yipeng
- Abstract
Sensor fault detection of discrete‐time descriptor systems with bounded disturbances is studied. The authors propose a new structure of a fault detection observer by augmenting the output, which can broaden the application scope. A H−/L∞ criterion is used to achieve the fault sensitivity and disturbance attenuation ability of the residual simultaneously. The residual generation and time‐varying threshold calculation are integrated together based on L∞ analysis. Furthermore, sufficient conditions for the H−/L∞ performance of the proposed observer are formulated in terms of linear matrix inequalities. Numerical simulations of a direct current motor and a flight vehicle are conducted to verify the applicability of the proposed fault detection observer design method.
- Publication
IET Control Theory & Applications (Wiley-Blackwell), 2018, Vol 12, Issue 15, p2156
- ISSN
1751-8644
- Publication type
Article
- DOI
10.1049/iet-cta.2017.1408