Fast-rate residual generator based on multiple slow-rate sensors

Hang Geng; Yan Liang; Xiaojing Zhang; Feng Yang

Fast-rate residual generator based on multiple slow-rate sensors

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Author(s): Hang Geng ¹ ; Yan Liang ¹ ; Xiaojing Zhang ¹ ; Feng Yang ¹
- Affiliations: 1: School of Automation, Northwestern Polytechnical University, Xi'an, People's Republic of China
Source: Volume 8, Issue 8, October 2014, p. 878 – 884
DOI: 10.1049/iet-spr.2013.0296 , Print ISSN 1751-9675, Online ISSN 1751-9683

Received 24/07/2013, Accepted 28/03/2014, Revised 11/03/2014, Published 17/10/2014

This study puts forward the problem of fast-rate fault detection based on multiple slow-rate sensors. A fast-rate residual generator with casuality constraint is established from the multi-sensor model. Parameters of the residual generator are determined via disturbance-decoupling based on left eigenvector assignment. It is found that the condition of disturbance-decoupling is related to the multi-rate sensor sampling nature. A numerical example is given to illustrate the effectiveness of the proposed residual generator.

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