Daniele Casagrande

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— 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)
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)
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)
— 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)