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Analysis and design of unknown input observers for a class of 2-D nonlinear systems |
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| Authors: | Lu Wang Huiling Xu Li Xu Zhiping Lin |
| Affiliation: | 1. School of Automation, Nanjing University of Science and Technology, Nanjing, 210014, People’s Republic of China 2. School of Science, Nanjing University of Science and Technology, Nanjing, 210014, People’s Republic of China 3. Faculty of Systems Science and Technology, Akita Prefectural University, Akita, 015-0055, Japan 4. School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore |
| Abstract: | This paper considers the analysis and design of asymptotic unknown input observers (UIOs) for a class of two-dimensional (2-D) nonlinear systems. A sufficient condition for the existence of an asymptotic UIO such that the observer estimation error asymptotically converges to zero is first given in terms of a rank condition on the given system matrices. A systematic method is then presented for the design of UIOs using a linear matrix inequality technique. An example is provided to illustrate the effectiveness of the proposed design method. |
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