186,752 research outputs found
Some results on output algebraic feedback with applications to mechanical systems
No full textConstructive necessary and sufficient conditions for disturbance decoupling with algebraic output feedback are presented. Necessary and sufficient conditions are also derived for the decoupling problem with internal stability. The same conditions are re-stated in terms of invariant zeros. The groundwork throughout is the dual-lattice structures of invariants introduced by Basile and Marro (1992). Finally, an application to mechanical systems is presented
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Attorney Marro Z. Romero, Atty. Rudy Ramos, Dr. Hector P. Garcia, Pedro Esquivel and Edwin Smith at Arlington Cemetery (photograph)
No full textL. to R.: Attorney Marro Z. Romero, Atty. Rudy Ramos, Dr. Hector P. Garcia, Pedro Esquivel and Edwin Smith at Arlington Cemetery
A feedforward compensation scheme for perfect decoupling of measurable input functions
No full textsummary:In this paper the exact decoupling problem of signals that are accessible for measurement is investigated. Exploiting the tools and the procedures of the geometric approach, the structure of a feedforward compensator is derived that, cascaded to a linear dynamical system and taking the measurable signal as input, provides the control law that solves the decoupling problem and ensures the internal stability of the overall system
Output feedback model matching through self-bounded controlled invariant subspaces
No full textModel matching by output feedback is completely treated in the geometric approach framework. Self-bounded controlled invariant subspaces are shown to play a crucial role in the synthesis of minimal-order dynamic regulators achieving model matching by output feedback with stability. The approach provides insight into the internal eigenstructure of the minimal self-bounded controlled invariant subspace, thus paving the way to an effective treatment of nonminimum-phase systems
La culture du Haut-Euphrate au bronze ancien. Essai d'interprétation à partir de la céramique peinte de Keban (Turquie)
No full textMarro Catherine. La culture du Haut-Euphrate au bronze ancien. Essai d'interprétation à partir de la céramique peinte de Keban (Turquie) Istanbul : Institut Français d'Études Anatoliennes-Georges Dumézil, 1997. 402 p. (Varia Anatolica, 8
Signal decoupling with preview: perfect solution for nonminimum-phase systems in the geometric approach context
No full textThe problem of making the output insensitive to an exogenous input signal possibly known with preview is tackled in the geometric approach context. The definition of minimal preview for decoupling is introduced. Necessary and sufficient constructive conditions for decoupling with minimal preview are proved by means of simple geometric arguments. The structural and the stabilizability conditions are considered separately. The minimal complexity of the solution is guaranteed by using the minimal self-bounded controlled invariant subspace. In the presence of unstable dynamics of that subspace, a steering along zeros technique completely devised in the state space allows the solution with internal stability to be nonetheless achieved. Implementation is obtained by resorting to FIR systems
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