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Mostrando ítems 1-10 de 2009
The inverse problem of the calculus of variations for discrete systems
(IOP Publishing, 2018-04-09)
We develop a geometric version of the inverse problem of the calculus of variations for discrete mechanics and constrained discrete mechanics. The geometric approach consists of using suitable Lagrangian and isotropic ...
Meromorphic first integrals of analytic diffeomorphisms
We give an upper bound for the number of functionally independent meromorphic first integrals that a discrete dynamical system generated by an analytic map f can have in a neighborhood of one of its fixed points. This bound ...
Discrete approximations for strict convex continuous time problems and duality
(Soc Brasileira Matematica Aplicada & Computacional, 2004-01-01)
We propose a discrete approximation scheme to a class of Linear Quadratic Continuous Time Problems. It is shown, under positiveness of the matrix in the integral cost, that optimal solutions of the discrete problems provide ...
Discrete-Time Modeling and Path-Tracking for a Wheeled Mobile Robot
(Revista Computación y Sistemas; Vol. 13 No. 2, 2009-10-15)
Abstract. The exact discrete-time model of a two wheel differentially driven mobile robot is obtained by direct integration of its continuous-time kinematic model. The discrete-time model obtained is used to design two ...
Discrete approximations for strict convex continuous time problems and duality
(Soc Brasileira Matematica Aplicada & Computacional, 2004-01-01)
We propose a discrete approximation scheme to a class of Linear Quadratic Continuous Time Problems. It is shown, under positiveness of the matrix in the integral cost, that optimal solutions of the discrete problems provide ...
Discrete approximations for strict convex continuous time problems and duality
(2004-01-01)
We propose a discrete approximation scheme to a class of Linear Quadratic Continuous Time Problems. It is shown, under positiveness of the matrix in the integral cost, that optimal solutions of the discrete problems provide ...
Common architecture for discrete wavelet transform analysis and synthesis with sequential and constant processing elements
(2004-10-08)
This paper adresses the problem on processing biological data such as cardiac beats, audio and ultrasonic range, calculating wavelet coefficients in real time, with processor clock running at frequency of present ASIC's ...
Common architecture for discrete wavelet transform analysis and synthesis with sequential and constant processing elements
(2004-10-08)
This paper adresses the problem on processing biological data such as cardiac beats, audio and ultrasonic range, calculating wavelet coefficients in real time, with processor clock running at frequency of present ASIC's ...
Error analysis of forced discrete mechanical systems
(American Institute of Mathematical Sciences, 2021-12)
The purpose of this paper is to perform an error analysis of the variational integrators of mechanical systems subject to external forcing. Es- sentially, we prove that when a discretization of contact order r of the La- ...