Search results for " Control"
showing 10 items of 7691 documents
LPV model identification for gain scheduling control: An application to rotating stall and surge control problem
2006
Abstract We approach the problem of identifying a nonlinear plant by parameterizing its dynamics as a linear parameter varying (LPV) model. The system under consideration is the Moore–Greitzer model which captures surge and stall phenomena in compressors. The control task is formulated as a problem of output regulation at various set points (stable and unstable) of the system under inputs and states constraints. We assume that inputs, outputs and scheduling parameters are measurable. It is worth pointing out that the adopted technique allows for identification of an LPV model's coefficients without the requirements of slow variations amongst set points. An example of combined identification…
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 …
Robust fault detection for switched systems with time-varying delay using delta operator approach
2014
The effect of improvisational music therapy on the treatment of depression: protocol for a randomised controlled trial
2008
Background. Music therapy is frequently offered to individuals suffering from depression. Despite the lack of research into the effects of music therapy on this population, anecdotal evidence suggests that the results are rather promising. The aim of this study is to examine whether improvisational, psychodynamically orientated music therapy in an individual setting helps reduce symptoms of depression and improve other health-related outcomes. In particular, attention will be given to mediator agents, such as musical expression and interaction in the sessions, as well as to the explanatory potential of EEG recordings in investigating emotion related music perception of individuals with depr…
Prefazione al volume: Sociologia della devianza e del crimine
2021
Preface to the volume: Sociology of deviance and crime. Volume which is the fruit of a choral work that involved Italian scholars and scholars intent on elaborating, each according to their own specializations, reflections and analyzes on socio-criminological themes and theories in the light of the most recent developments contemporaries.
L'articulation des usages diagnostique et interactif d'un seul et même système de contrôle de gestion : le cas d'un système d'indicateurs environneme…
2013
With the conceptual framework of control levers of Simons (1995), this article shows how to coordinate diagnostic and interactive uses of the same "management control system" (in this case a system of environmental indicators) for the deployment and the emergence of new strategies. In contrast to the literature, we propose an articulation "in parallel" of levers of control as alternative to sliding levers of control. These results are obtained from a case study in a French wine and spirits subject to large strategic environmental uncertainties.
An analysis of model predictive control with integral action applied to digital displacement cylinders
2020
This article aims to analyze Model Predictive Control (MPC) for the control of multi-chamber cylinders. MPC with and without integral action has been introduced. Three different algorithms have been used to solve the optimization problem in the MPC. The different algorithms have been compared with an industrial solver. The influence of changing mass, choosing a different middle line pressure, system delays, signal noise, velocity estimation, and changing pressure levels has been investigated. It is concluded that for the small prediction horizon used in the paper a simple algorithm such as A can produce results as good as the previously used Differential Evolution algorithm in less than hal…
Papel de los sistemas de control de gestión en el éxito de la trasformación digital: influencia en las capacidades dinámicas digitales
2023
La rápida evolución de las tecnologías de la información (TI) y sus aplicaciones empresariales está obligando a las organizaciones a realizar esfuerzos constantes para seguir siendo competitivas. La nueva economía digital, así como el entorno disruptivo y cambiante en el que operan las empresas, fuerza a los directivos a priorizar estratégicamente procesos de adaptación y transformación, replanteando su perspectiva estratégica más allá de la implantación de nuevas tecnologías (Rogers, 2016), para provocar un cambio profundo en toda la organización. Este proceso es conocido, aunque no siempre es bien entendido, como transformación digital (TD). La TD modifica el alcance y la velocidad del la…
DIGNITA' E RISERVATEZZA DEL LAVORATORE
2010
il saggio analizza la disciplina della riservatezza del lavoratore all'interno della l. n. 300/1970
Mobile addiction e prevenzione attraverso il gruppo dei pari
2014
La dipendenza da cellulare, espressione dei profondi cambiamenti economici, sociali e culturali degli ultimi decenni, sta diventando un problema sempre piu diffuso, soprattutto fra gli adolescenti. L’articolo, nella prima parte si sofferma sull’analisi della letteratura relativa alla dipendenza tecnologica, in generale, e alla dipendenza da cellulare, nello specifico; nella seconda parte, presenta una ricerca-intervento che, da un lato, ha avuto l’obiettivo di esaminare la relazione tra fattori cognitivi (locus of control) e fattori emotivi (disregolazione emotiva) nei casi di abuso nell’utilizzo di telefoni cellulari; dall’altro, ha voluto avviare una riflessione circa l’influenza del grup…