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27 results on '"Mari, Jorge"'

4. Stability analysis of a class of PWM systems

Author

Almer, Stefan, Jonsson, Ulf, Kao, Chung-Yao, and Mari, Jorge

Subjects
Liapunov functions -- Analysis, Pulse-duration modulation -- Analysis
Abstract

This note considers stability analysis of a class of pulsewidth modulated (PWM) systems that incorporates several different switched mode de-de converters. The systems of the class typically have periodic solutions. A sampled data model is developed and used to prove stability of these solutions. Conditions for global and local exponential stability are derived using quadratic and piecewise quadratic Lyapunov functions. The state space is partitioned and the stability conditions are verified by checking a set of coupled linear matrix inequalities (LMIs). Index Terms--dc-dc converter, Lyapunov methods, pulsewidth modulated (PWM) systems, sampled data modeling, stability analysis.

Published
2007

15. A counterexample in power signals space

Author

Mari, Jorge

Subjects
Electric power systems -- Models, Electric power system stability -- Analysis, Mathematical optimization -- Evaluation
Abstract

It is shown that the set of power signals is not a vector space.

Published
1996

19. Vector ARMA estimation: A reliable subspace approach

Author

Mari, Jorge, Stoica, Petre, and McKelvey, Thomas

Subjects
Signal processing -- Research, Stochastic systems -- Research, Business, Computers, Electronics, Electronics and electrical industries
Abstract

A parameter estimation technique is presented for finite-dimensional multivariate linear stochastic systems.

Published
2000

20. MA estimation in polynomial time

Author

Stoica, Petre, McKelvey, Tomas, and Mari, Jorge

Subjects
Polynomials -- Usage, Signal processing -- Research, Business, Computers, Electronics, Electronics and electrical industries
Abstract

Moving average estimation in polynomial time is examined.

Published
2000

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