Energy-based Lyapunov functions for forced Hamiltonian systems with dissipation


Maschke, Bernhard and Ortega, Romeo and Schaft, Arjan J. van der (2000) Energy-based Lyapunov functions for forced Hamiltonian systems with dissipation. IEEE transactions on automatic control, 45 (8). pp. 1498-1502. ISSN 0018-9286

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Abstract:In this paper, we propose a constructive procedure to modify the Hamiltonian function of forced Hamiltonian systems with dissipation in order to generate Lyapunov functions for nonzero equilibria. A key step in the procedure, which is motivated from energy-balance considerations standard in network modeling of physical systems, is to embed the system into a larger Hamiltonian system for which a series of Casimir functions can be easily constructed. Interestingly enough, for linear systems the resulting Lyapunov function is the incremental energy; thus our derivations provide a physical explanation to it. An easily verifiable necessary and sufficient condition for the applicability of the technique in the general nonlinear case is given. Some examples that illustrate the method are given
Item Type:Article
Copyright:©2000 IEEE
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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