Search results for "Systems design"

Fast photon detection for COMPASS RICH-1

2007

A fast photon detection system has been built and assembled for the upgrade of COMPASS RICH-1. The system is based on multianode photomultipliers coupled to fused silica lenses to collect the light from a larger surface and to guide it to the photocathode, preserving the position information. The emphasis is on the fast response and high rate capability of the detectors and the associated electronics. The photon detection system is now ready and it will be employed in the 2006 COMPASS data taking. We report about the system design and construction.

A review of fuel cell based hybrid power supply architectures and algorithms for household appliances

2014

Abstract Nowadays, renewable power system solutions are widely investigated for residential applications. Grid-connected systems including energy storage elements are designed. Advanced research is actually focused on improving the reliability and energy density of renewable systems reducing the whole utility cost. Source and load modeling, power architectures and algorithms are only a few topics to be addressed. Designers have to carefully deal with each subtopic prior to design efficient renewable energy systems. In the literature, each topic is separately discussed and the lack of a unique reference guide is clear to power electronics designers. In this paper, each design step including …

PV System Design for Off-Grid Applications

2015

Solar photovoltaic (PV) technology has the versatility and flexibility for developing off-grid electricity system for different regions, especially in remote rural areas. While conventionally straight forward designs were used to set up off-grid PV-based system in many areas for wide range of applications, it is now possible to adapt a smart design approach for the off-grid solar PV hybrid system. A range of off-grid system configurations are possible, depending upon load requirements and their electrical properties as well as on site-specific available energy resources. The overall goal of the off-gird system design should be such that it should provide maximum efficiency, reliability and …

Experimenting lean dynamic performance management systems design in SMEs

2018

Purpose The purpose of this paper is to frame the potential benefits of lean dynamic performance management (PM) systems for small and micro-enterprises. Such systems may exploit the entrepreneur’s tacit knowledge and build on managerial competencies, by incorporating individual attributes into organisational routines. Design/methodology/approach The paper suggests the use of insight models based on the combination of lean PM tools and system dynamics (SD) modelling. Based on a number of exemplary cases, the paper discusses the potential benefits of these models, in respect to four specific contexts: artisan, new company start-up, established firm and micro-giant company. Related to such c…

Generation of Hardware/Software systems based on CAL dataflow description

2011

International audience; This paper presents a new development of rapid prototyping tools for system design based on data-flow specifications. In this context, the efficiency of tools for the automatic translation from the data-flow programs to C and/or HDL are assessed by means of two design cases. The paper also introduces the new concept of the automatic synthesis of interfaces. Such generic interfaces are implemented by using an embedded microprocessor, which can support a large variety of interfaces already available as native IP libraries in the case of FPGA. The two design cases described here have been developed, tested and validated on different implementation platforms. The results…

Controlling Domains with High Levels of Hysteresis Using Qualitative Modelling

1997

Abstract Dans ce papier, on se propose I'architecture d'un systeme expert pour controle a temps reel basee sur un modele qualitatif- Le susteme de controle utilise le modele qualitatif pour predire problemes futures et pour manier dounees incompletes et imprecises des sensors. Cettes habilites sout tres precieses pour controler systemes avec une grande niveau d'hysteresis, et foumissent un controle doux et rapide. Nous avans applique l'architecture proposee a le domaine du control de trafic urbain, caracterise par grandes problemes d'hysteresis.

Cover Feature: System Design Rules for Intensifying the Electrochemical Reduction of CO 2 to CO on Ag Nanoparticles (ChemElectroChem 9/2020)

2020

An exact algorithm for preventive maintenance planning of series-parallel systems

2009

Reliability is a meaningful parameter in assessing the performance of systems such as chemical processing facilities, power plant, aircrafts, ships, etc. In the literature, reliability optimization is widely considered during the system design phase and it is carried out by an opportune selection of both system components and redundancy. On the other hand, the problem of maintaining a required level of reliability by an opportune maintenance policy has been poorly examined. The paper tackles this problem for a system whose major components can be maintained only during a planned system downtime. An exact algorithm is proposed in order to single out the set of components that must be maintai…

An information systems design product theory for the class of integrated requirements and release management systems

2010

High-tech companies conducting product development need to collect and analyze requirements effectively, plan and implement releases, and allocate requirements to appropriate releases. Requirements and release management are complicated because development activities typically are scattered across multiple sites, involve multiple partners in different countries, leverage various development methods and tools, and are realized through various organizational arrangements such as release projects in organizations structured around products and permanent release teams in organizations responsible for the long-term development and maintenance of strategic software and hardware assets. Flexible, …

Activity typologies as a design model for the ubiquitous detection of daily routines

2018

Emerging technologies open up new visions and business potential for systems design and development in the areas of wellbeing and health. New technologies enable the detection of human performance and early changes in physical and cognitive functioning, making it possible to monitor an older person’s wellbeing. This kind of technology or service sets significant requirements for design, as design concepts must be able to capture the complexity of people’s daily lives in terms of activities and environments. Technology itself is “blind” unless designers can adapt it to human life. There is thus a distinct need for comprehensive design and development models that generate adequate human requi…