Geodesic
Global finite-time observers for a class of nonlinear systems
Kybernetika, Tome 49 (2013) no. 2, pp. 319-340.

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Global finite-time observers are designed for a class of nonlinear systems with bounded varying rational powers imposed on the increments of the nonlinearities whose solutions exist and are unique for all positive time. The global finite-time observers designed in this paper are with two homogeneous terms. The global finite-time convergence of the observation error system is achieved by combining global asymptotic stability and local finite-time stability.
Classification : 93B07, 93C10, 93D20
Keywords: global finite-time observer; nonlinear system; homogeneity 
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     title = {Global finite-time observers for a class of nonlinear systems},
     journal = {Kybernetika},
     pages = {319--340},
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     volume = {49},
     number = {2},
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     mrnumber = {3085399},
     zbl = {1264.93029},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2013__49_2_a7/}
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Li, Yunyan; Shen, Yanjun; Xia, Xiaohua. Global finite-time observers for a class of nonlinear systems. Kybernetika, Tome 49 (2013) no. 2, pp. 319-340. http://geodesic.mathdoc.fr/item/KYB_2013__49_2_a7/