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Functional interval observer for discrete-time systems with disturbances
Applied Mathematics and Computation ( IF 3.092 ) Pub Date : 2020-05-22 , DOI: 10.1016/j.amc.2020.125352
Haochi Che; Jun Huang; Xudong Zhao; Xiang Ma; Ning Xu

This paper further investigates the design problem of the functional interval observer for discrete-time systems with disturbances. Two methods are given to design functional interval observers. Given monotone system theory, a Luenberger-like functional interval observer is constructed and sufficient conditions are achieved by Sylvester equations in the first method. The second approach is known as the two-step method. An H∞ functional observer of the system is presented by the H∞ technique, and then the approach of the zonotope is used to estimate its upper and lower boundaries to improve the estimation accuracy. The above methods are applied to two examples for comparison and to show the correctness.
更新日期:2020-05-22

 

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