Search results for " Control systems"
showing 10 items of 63 documents
Optimal passive-damping design using a decentralized velocity-feedback H-infinity approach
2012
In this work, a new strategy to design passive energy dissipation systems for vibration control of large structures is presented. The method is based on the equivalence between passive damping systems and fully decentralized static velocity-feedback controllers. This equivalence allows to take advantage of recent developments in static output-feedback control design to formulate the passive-damping design as a single optimization problem with Linear Matrix Inequality constraints. To illustrate the application of the proposed methodology, a passive damping system is designed for the seismic protection of a five-story building with excellent results. Peer Reviewed
Design of the Biotechnological System for the Cultivation of a Polysaccharide-Producing Microorganism and Metabolites Separation
1970
This paper presents a design of the biotechnological system established for the cultivation of a polysaccharide-producing microorganism and the separation of the polysaccharide together with other metabolites. The strain used is a halophilic archaeon called Haloferax mediterranei (Mironescu et al., 2003). On designing the biotechnological system, some requirements are important: The recipients and the pipes must be resistant to the corrosion action of the cultivation substrate very rich in NaCl (125 to 150 g/l); A command and control system for pH, temperature and substrate and inoculum feeding is necessary; A system for monitoring dissolved oxygen and gases evacuated from the bioreactor (O…
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 …
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.
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…
Experimental test on a fuel cell-supercapacitor hybrid power supply for a digital still camera
2009
The contribution of "spontaneous" health care networks to improving outcomes: Opportunities and challenges from the perspective of planning and contr…
2019
The article aims to explore how Planning Control systems may support network-oriented policy-making in the health care sector. This work examines the case of ISMETT (Mediterranean Institute for high specialized transplants and therapies), a Sicilian hospital established in 1998 to provide high specialized and complex transplants and therapies. ISMETT pertains to several networks and it has a long-time experience in establishing and governing such inter-organizational relationships. The analysis of the case illustrates how health care networks may contribute to improve health and generate social and economic outcomes for the community.
Design and implementation of the AMIGA embedded system for data acquisition
2021
The successful installation, commissioning, and operation of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and admin-istrative staff in Malargtie. We are very grateful to the following agencies and organizations for financial support: Comision Nacional de Energla Atomica, Agencia Nacional de Promocion Cientffica y Tec-nologica (ANPCyT) , Consejo Nacional de Investigaciones Cientfficas y Tecnicas (CONICET) , Gobierno de la Provincia de Mendoza, Municipalidad de Malargtie, NDM Holdings and Valle Las Leilas, in gratitude for their continuing cooperation over land access, Argentina; the Australian Research Council; Conselho…
Relationship between management Control and Organizational learning: An exploratory Study
2019
International audience; Cet article traite la question de la relation du contrôle de gestion et de l’apprentissage organisationnel. La méthodologie de recherche mobilisée, basée sur une approche qualitative, est fondée sur une étude de cas de la filiale d’une multinationale industrielle. Les résultats obtenus ont d’abord montré l’exisitance d’une relation en double sens entre le contrôle de gestion et l’apprentissage organisationnel. En plus de sa mission traditionnelle de régulation, l’usage interactif du système de contrôle de gestion favorise le développement des configurations de l’apprentissage en double boucle qui permet de questionner la pertinence et la validité de la stratégie ains…
Uno strumento virtuale per il monitoraggio e il controllo di un impianto fotovoltaico a concentrazione
2014
In questa memoria si presenta una sintesi delle attività condotte nell'ambito del progetto SERPICO ("Sviluppo E Realizzazione di Prototipi di Inverter per impianti fotovoltaici a Concentrazione", PO-FESR Sicilia 2007-2013, Misura 4.1.1.2). Il progetto ha riguardato lo sviluppo di un prototipo di impianto fotovoltaico-termico a concentrazione e del relativo sistema di monitoraggio e controllo. Tale sistema permette di acquisire le quantità sia elettriche che termiche. Inoltre esso implementa un algoritmo per l'inseguimento solare utilizzato per ottimizzare la produzione di potenza.