1996
Autores
Martins, A; Ferreira, JJP; Mendonca, JM;
Publicação
BALANCED AUTOMATION SYSTEMS II: IMPLEMENTATION CHALLENGES FOR ANTHROPOCENTRIC MANUFACTURING
Abstract
This paper describes a integrated set of tools supporting Prototype Development, Test and Integration of Shop-Floor Management Applications, as well as an illustrative case study. Increasing Requirements advise that rapid prototyping of shop-floor software applications is fostered by the use of powerful modelling tools. The authors describe the use of a combined agent oriented/structured analysis approach to build the software system agent hierarchy and behaviour, which are further modelled as SDL process classes through a powerful Modelling Workbench. The result of this approach was the integration of two off-the-sheIf tools, the Teamwork CASE Tool and the Modelling Workbench. This integration allows the SDL executable models to be used as emulated shop-floor applications. These application models, interacting with the prototypes of their user interlaces, as well as with the actual shop-floor simulation and production control models, may then be fully tested by the end-user in close-to-real conditions.
1996
Autores
Machado Da Silva, J; Silva Matos, J;
Publicação
Proceedings of the 1996 European Conference on Design and Test, EDTC 1996
Abstract
The use of cross-correlation between power supply current and output voltage dynamic responses is presented as a methodology for improved mixed current /voltage testing of analogue and mixed-signal circuits. Results obtained from simulations are presented which show that better fault coverage and a simplification of test circuitry can be obtained, when compared with the results obtained from the direct observation of the individual signals. These advantages are important factors to develop viable new design for testability and buil-in self test techniques. © 1996 IEEE.
1996
Autores
daSilva, JM; Matos, JS; Bell, IM; Taylor, GE;
Publicação
38TH MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS, PROCEEDINGS, VOLS 1 AND 2
Abstract
1996
Autores
Dutra, IdC;
Publicação
29th Annual Hawaii International Conference on System Sciences (HICSS-29), January 3-6, 1996, Maui, Hawaii, USA
Abstract
1996
Autores
Alves, JC; Matos, JS;
Publicação
38TH MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS, PROCEEDINGS, VOLS 1 AND 2
Abstract
In this paper, we present an application of the simulation annealing optimization algorithm to the problem of high-level synthesis of digital systems, targeted to architectures with run-time reconfigurable functional units. The scheduling, allocation and binding problems are treated simultaneously. Reconfiguration times and execution delays are taken into account, along with pipelined execution and precise clock cycles for consumption of each operand.
1996
Autores
DaSilva, JM; Matos, JS; Bell, IM; Taylor, GE;
Publicação
JOURNAL OF ELECTRONIC TESTING-THEORY AND APPLICATIONS
Abstract
Power supply current monitoring is a promising technique for the development of new test methodologies for analog and mixed-signal circuits. The advantages of efficiency and reduced test time have already been recognized in the digital domain. This paper shows that improved test efficiency and detection confidence are obtained when both output voltage and power supply current are observed. Results found from the simulation of two circuits are presented comparing fault detection ratios and the amplitude of faulty response deviations when observing each one of these signals. Cross-correlation between output voltage and power supply current is presented as a means to perform a single mixed current/voltage testing operation, providing at the same time increased efficiency. It allows also for simplifications on test circuitry and processing, as reductions on the sampling rates and amplitude resolutions used to acquire the signals provide the same fault coverage levels obtained using higher fidelity measurements.
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