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http://dx.doi.org/10.5573/ieie.2015.52.5.214

Robust Estimation Algorithm for Switching Signal and State of Discrete-time Switched Linear Systems  

Lee, Chanhwa (ASRI, Department of Electrical and Computer Engineering, Seoul National University)
Shim, Hyungbo (ASRI, Department of Electrical and Computer Engineering, Seoul National University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.52, no.5, 2015 , pp. 214-221 More about this Journal
Abstract
In this paper, we present robust estimation and detection algorithms for discrete-time switched linear systems whose output measurements are corrupted by noises. First, a mode estimation algorithm is proposed based on the minimum distance criterion. Then, state variables are also observed under the active mode estimate. Second, a detection algorithm is constructed to detect the mode switching of the switched system. With the boundedness of measurement noise, the proposed estimation algorithm returns the exact active mode and approximate state information of the switched system. In addition, the detection algorithm can detect the switching time within a pre-determined time interval after the actual switching occurred.
Keywords
Discrete-time switched linear systems; switching signal and state estimation; observer design;
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