摘要:

Abstract:A knowledge‐based system (KBS) could be an ideal decision tool to reduce the complexity of planning non‐destructive evaluation (NDE) or scheduling inspections. Such a KBS would have to evaluate the advantages and limitations of each available technique, given the specificity of a problem, and incorporate the fundamental knowledge derived from failure analysis. The KBS should include topics such as materials vs. defect size and type, probability of failure, and basic reliability information. In order to organise knowledge of materials degradation efficiently, the parameters that control various forms of failure first have to be rationalised in a general framework. This framework and their factors would then constitute a quantitative and easily programmable description of the independent variables controlling the intensity of a failure. This paper describes such a framework which could guide the general selection of NDE for materials failure, with a particular emphasis on corrosion related failures. The framework architecture itself was constructed using an object‐oriented methodology for maximum flexibility, since it was anticipated that the materials parameters could easily be described as multidimensional ob

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1995.tb00043.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Abstract:A real‐time visual servo tracking system for an industrial robot has been developed. Instead of a charge coupled device (CCD), a position sensitive detector (PSD) is used as the real‐time vision sensor due to its fast response (the light position is transduced to analogue current). A neural network learns the complex association between the 3D object position and its sensor reading, and uses it to track that object, either moving or stationary. It also turns out that this scheme lends itself to a user‐friendly way to teach workpaths for industrial robots. Furthermore, for real‐time use of the neural net, an efficient neural network architecture has been developed based on the concept of input space partitioning and local learning. Real experiments indicate the system's characteristics of fast processing and learning as well as optimal usage of network re

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1995.tb00044.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Abstract:Process supervision consists of following the temporal evolution (change) of process behaviours. This task has usually been performed based on the knowledge and experience of domain experts and operators. Actually, these experts and operators almost always express their experience and knowledge about process evolution in an imprecise, fuzzy and vague way. A good supervision system should be capable of dealing at once with two different kinds of knowledge: time and uncertainty.For many years, time and uncertainty have been two of the most important topics in Artificial Intelligence research and applications. Many approaches have been proposed to deal with either one or the other. Among the various approaches for time, reified logic has been considered as the most influent one. Possibilistic logic, on the other hand, has shown its ability to handle uncertain knowledge and information. This paper describes an approach for managing temporal uncertainty based on fuzzy logic and possibility theory. A fuzzy temporal expert system shell has been developed to perform process supervision tasks.

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1995.tb00045.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Abstract:Computational support for concurrent engineering design presents a number of issues in the design of knowledge‐based systems. A fundamental concern is the need to provide the life‐cycle perspective in recommending design alternatives. It is argued that such a complex knowledge‐based system should be distributed, due to the inherent problems with large knowledge bases and the maintenance of consistency. Inconsistent local views of a problem and different priorities on design issues are expected between different knowledge‐based design perspectives. These inconsistencies and different priorities will lead inherently to conflict which has to be resolved. This paper addresses the issues and key variables in conflict resolution and presents a strategy that can be applied for managing the conflict resolution process. We propose negotiation as the method of analysing a conflict situation, applying an appropriate conflict resolution strategy and monitoring its performance. We present an overview of the nature of conflict and some conflict resolution strategies, and see in what situations certain strategies are appr

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1995.tb00046.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Abstract:During the last decade, cumulative trauma disorders have become a major concern both to occupational health and safety professionals and manufacturing industries. This paper will present the development of a knowledge‐based system for predicting the potential of developing strain injuries among employees exposed to repetitive and forceful activities. This potential is identified through the use of an expert system incorporating a fuzzy set algorithm. Recommendations for the prevention of the resulting CTDs are then provided by the system. The system executes on a microcomputer platform, and was constructed utilising a commercial object‐oriented expert system sh

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1995.tb00047.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Abstract:They all stink: food and drink, perfumery, household products, soaps, shampoos, paints, manufacturing processes, printing processes, waste products, contaminated air, and automotive emissions and environmental testing. In every case, small is a criterion of quality.Automated techniques to ‘smell’ or ‘taste’ liquids using mass spectrometry and gas chromatography are time consuming, require skilled personnel and often do not give the information required for qualitative ‘testing’. A new technique is now available due to the advances in neural computing technology and multi‐sensor array technology. The combination of these two approaches tries to simulate the human olfactory system in a simplified form. This paper shows that the recognition ability of an odour sensor array will be significantly improved using a neural computing approach in order to discriminate between s

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1995.tb00048.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1995.tb00049.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1995.tb00050.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1995.tb00051.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1995.tb00052.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY