Search results for "Switching systems"

showing 5 items of 5 documents

A Hybrid Control Strategy for Quadratic Boost Converters with Inductor Currents Estimation

2020

International audience; This paper deals with a control strategy for a DC-DC quadratic boost converter. In particular, a hybrid control scheme is proposed to encompass a control law and an observer for the estimation of the system states, based only on the measurements of the input and output voltages. Differently from classical control methods, where the controller is designed from a small-signal model, here the real model of the system is examined without considering the average values of the discrete variables. Using hybrid dynamical system theory, asymptotic stability of a neighborhood of the equilibrium point is established, ensuring practical stability of the origin, which contains es…

0209 industrial biotechnologyhybrid dynamical systemsObserver (quantum physics)Computer science02 engineering and technologyDynamical systemStability (probability)020901 industrial engineering & automationQuadratic equationExponential stabilitySettore ING-INF/04 - AutomaticaControl theoryswitching systems[INFO.INFO-AU]Computer Science [cs]/Automatic Control Engineering0202 electrical engineering electronic engineering information engineeringElectrical and Electronic Engineeringlinear matrix inequalitiesEquilibrium pointApplied Mathematics020208 electrical & electronic engineeringobserverConvertersComputer Science ApplicationsHybrid dynamical systems Linear matrix inequalities Observer Quadratic boost converter Switching systemsControl and Systems EngineeringQuadratic boost converter
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Quantized Dissensus in switching networks with nodes death and duplication

2009

Hybrid systemsswitching systemsHybrid systems switching systems consensus protocol quantized protocolquantized protocolHybrid systems; switching systems; consensus protocol; quantized protocolconsensus protocol
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Dissensus, death and division

2009

The modeling of switching systems describing networks where death and duplication processes occur is described. A dissensus protocol, complementary to consensus protocol, is introduced and the convergence or divergence of the agents' state evolution is studied. We discuss some properties of the topology reached by the network when different rules of duplication and inheritance are implemented.

Impulsive networksHybrid systemsComputer scienceDistributed computingconsnesus problemsSwitching systemsDivision (mathematics)biological modelDivergence (computer science)Consensus protocolsInheritance (object-oriented programming)Settore ING-INF/04 - Automaticaconsnesus problems biological model networksnetworksConvergence (routing)Settore MAT/09 - Ricerca OperativaProtocol (object-oriented programming)Biological models; Consensus protocols; Hybrid systems; Impul-sive networks; Switching systems;Biological models; Consensus protocols; Hybrid systems; Impulsive networks; Switching systemsBiological models2009 American Control Conference
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Robust delay-dependent H∞ control of uncertain time-delay systems with mixed neutral, discrete, and distributed time-delays and Markovian switching p…

2011

Author's version of an article published in the journal: IEEE Transactions on Circuits and Systems I: Regular Papers. Also available from the publisher at: http://dx.doi.org/10.1109/tcsi.2011.2106090 The problem of robust mode-dependent delayed state feedback H ∞ control is investigated for a class of uncertain time-delay systems with Markovian switching parameters and mixed discrete, neutral, and distributed delays. Based on the LyapunovKrasovskii functional theory, new required sufficient conditions are established in terms of delay-dependent linear matrix inequalities for the stochastic stability and stabilization of the considered system using some free matrices. The desired control is …

delay systems H∞ control linear matrix inequalities Markov processes uncertain systems delay-dependent delayed state feedback distributed delays Lyapunov-Krasovskii functionals Markovian switching numerical example Stochastic stability and stabilization sufficient conditions uncertain time-delay system control system stability convex optimization delay control systems stabilization state feedback switching systems time delay uncertainty analysis discrete time control systemsVDP::Technology: 500::Mechanical engineering: 570VDP::Mathematics and natural science: 400::Mathematics: 410
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Groupware architecture for requirements processes in new product development

1999

An organization's ability to create successful products depends on how extensively it collects, analyzes and utilizes requirements information in its product development. Recent advances in groupware technologies allow such information to be shared more effectively in distributed organizations; thus, these technologies hold considerable potential as means of shortening the cycle time and improving the quality of requirements processes. This paper addresses issues in the design and implementation of groupware-supported requirements processes by drawing on experiences from large-scale industrial development projects within Nokia. The primary contribution of the paper is the conceptual design …

large-scale industrial development projectselectronic switching systemsread only memoryNokiacollaborative softwarecollaborative workcomputer sciencecomputer integrated manufacturingcomputer architectureproduct developmentinformation analysisdistributed organizatrionsquality improvement
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