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- Daniele Casagrande, Ulle Kotta, Małgorzata Wyrwas, Maris Tõnso
- 2008

— The problem of equivalence is considered for nonlinear single-input single-output systems defined on homogeneous time scales and described by n-th order input-output delta-differential equations. First the concepts of reduction and of irreducibility of an input/output equation are explained. Subsequently, based on these notions, a definition of… (More)

- Daniele Casagrande, Alessandro Astolfi, Thomas Parisini
- 2005

The problem of asymptotic stabilization for a class of nonholonomic systems is studied and solved by means of a hybrid control law which makes use of a (deterministic) finite state machine. It is shown that, by using a simple switching control scheme, the origin is a globally asymptotically stable equilibrium in the sense of Lyapunov. The control law can… (More)

- Daniele Casagrande, Alessandro Astolfi, Thomas Parisini
- 2005

— The problem of the asymptotic stabilization of a five dimensional nonholonomic systems, namely the " ball and plate " or " rolling sphere " system, is discussed and solved by means of a hybrid control law relying on a suitable finite state machine. A control law is associated to each state of the machine and, by using a simple switching strategy, the… (More)

The paper deals with the stabilizability of linear plants whose parameters vary with time in a compact set. First, necessary and sufficient conditions for the existence of a linear gain-scheduled stabilizing compensator are given. Next, it is shown that, if these conditions are satisfied, any compensator transfer function depending on the plant parameters… (More)

— In this paper it is shown that the controller design methodology recently introduced by the authors to stabilize non–globally feedback linearizable triangular systems solves the long–standing problem of transient stabilization of multimachine power systems with non-negligible transfer conductances. The 3n–dimensional (aggregated) model of the n-generator… (More)