Parameter identification of chaos system based on unknown parameter observer |
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| Authors: | Shaoming Wang Haigeng Luo Xiaoxin Liao |
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| Affiliation: | a Department of Physics and Electronic Engineering, Yunyang Teachers College, Danjiangkou, Hubei Province 442700, China
b Department of Control Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China |
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| Abstract: | Parameter identification of chaos system based on unknown parameter observer is discussed generally. Based on the work of Guan et al. [X.P. Guan, H.P. Peng, L.X. Li, et al., Acta Phys. Sinica 50 (2001) 26], the design of unknown parameter observer is improved. The application of the improved approach is extended greatly. The works in some literatures [X.P. Guan, H.P. Peng, L.X. Li, et al., Acta Phys. Sinica 50 (2001) 26; J.H. Lü, S.C. Zhang, Phys. Lett. A 286 (2001) 148; X.Q. Wu, J.A. Lu, Chaos Solitons Fractals 18 (2003) 721; J. Liu, S.H. Chen, J. Xie, Chaos Solitons Fractals 19 (2004) 533] are only the special cases of our Corollaries 1 and 2. Some observers for Lü system and a new chaos system are designed to test our improved method, and simulations results demonstrate the effectiveness and feasibility of the improved approach. |
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| Keywords: | Parameter identification Chaos system Unknown parameter observer State variable Auxiliary function |
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