Controllability of nonlinear systems |
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Authors: | Y. Yamamoto |
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Affiliation: | (1) Department of Engineering Mathematics, Faculty of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan;(2) Present address: Department of Mechanical Engineering, Faculty of Engineering, Tottori University, Koyama, Tottori, Japan |
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Abstract: | Some sufficient conditions are presented for the controllability of general nonlinear systems. First, the controllability problem is transformed into the problem of existence of fixed points for some operator; using Schauder's theorem, it is derived that a sufficient condition for controllability is the existence of a subsetS inCn+m (T) which is invariant for a derived operator. Secondly, with the aid of the notion of comparison principle, the existence of the subsetS is guaranteed by the existence of solutions for some nonlinear integral inequality or equality equations. For example, one solution for such nonlinear integral equations is obtained under the assumption of the uniform boundedness for a nonlinear term of the differential equation. |
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Keywords: | Controllability nonlinear systems sufficiency theorems control theory comparison theorems |
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