Automation of any track transport system also means providing a traffic management system (TMS) that meets the needs of both passengers and the operating company. A TMS usually comprises a distributed interconnected n...
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Automation of any track transport system also means providing a traffic management system (TMS) that meets the needs of both passengers and the operating company. A TMS usually comprises a distributed interconnected network of computers, controlling and supervising the vehicle operations. Such applications often encompass multiple, co-operative software components that execute across a distributed target system. It is felt that object-orientation (OO) is especially well-suited to this problem domain. The initial thoughts and experiments of the authors on this subject are discussed. A comprehensive traffic management system may perform the following main functions: traffic supervision and regulation; schedule and routing management; and simulation modelling.< >
Tactile sensing is not simply the ability to detect that a contact has occurred between an object and a manipulator, but encompasses a more comprehensive ability to grasp and identify shape, surface features, material...
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Tactile sensing is not simply the ability to detect that a contact has occurred between an object and a manipulator, but encompasses a more comprehensive ability to grasp and identify shape, surface features, material features, force and slippage etc. As technology progresses, sensors able to detect these features have become a reality, and the problem of integrating the information from such sensors must be taken into account. To achieve this objective an appropriate system organisation is required to efficiently and correctly integrate the data into a robust world model. Since the number of sensors that may be applied to any kind of problem is increasing daily, modularity, reusability and expandability are important properties. To achieve this flexibility an objectoriented approach has been followed in modelling the system. The authors consider the use of a multi-functional tactile system and its integration with an objectoriented expert identifier system (OOEIS) which is able to fuse data coming from a sensorized finger, with the aim of identifying the material properties of an object being touched.< >
This paper has presented a knowledge based system (KBS) architecture which provides a framework for the implementation of complex information processing tasks. Both rule based and algorithmic knowledge operate upon a ...
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This paper has presented a knowledge based system (KBS) architecture which provides a framework for the implementation of complex information processing tasks. Both rule based and algorithmic knowledge operate upon a hierarchy of symbolic, propositional, numerical and image information in the interpretation of sonar data. This has allowed the application of KBS technology to multi-dimensional signal processing as well as to higher levels of inference and reasoning within a single framework. Current work is investigating use of the cell within less ambitious domains, to focus more on the resolution of architectural design issues. Hardware implementations are also under consideration, using innovative devices such as the INMOS T414/T8000 transputer.
The central concept of the work described is that a database can be created which contains all the information about a complex engineering system, specifically a building management system (BMS). This database will be...
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The central concept of the work described is that a database can be created which contains all the information about a complex engineering system, specifically a building management system (BMS). This database will be updated and modified throughout the system lifecycle. Due to the large amount of information required to be entered into these databases, all data entry is done through graphical interfaces according to the maxim 'a picture is worth ten thousand words'. The user draws a picture of what is required, and this is then compiled into the desired database form. BMSs are used to control intelligent buildings. A BMS usually consists of a number of universal network controllers (outstations) which are connected together in a local area network (LAN), or wide area network (WAN). A number of PCs (terminals) can be connected to allow user access to the system for supervisory purposes. An outstation is connected to the hardware components which it controls and from where it gets its operating information. These components are called points; examples being sensors such as temperature, humidity, wind and solar effect, and actuators such as pumps, fans, valves, heating and cooling coils and humidifiers.< >
From the Publisher: New technologies and standards are emerging which will have a dramatic effect on the design and implementation of future industrial control systems. PLCs and PC-based soft controllers are beginning...
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ISBN:
(数字)9781849190367
ISBN:
(纸本)9780852967966
From the Publisher: New technologies and standards are emerging which will have a dramatic effect on the design and implementation of future industrial control systems. PLCs and PC-based soft controllers are beginning to use software components, such as object-oriented technology, to bring together the hitherto different worlds of factory automation and business systems. New tools and techniques are needed to design and model these systems, such as UML and modern fieldbus technology. The new IEC 61499 standard has been developed specifically to model distributed control systems, defining concepts and models so that software in the form of function blocks can be interconnected to define the behavior of a distributed control system. Tools based on IEC 61499 are likely to emerge soon to model, validate and simulate the behaviour of complex networks of function blocks and it is expected that this standard will become key to complex distributed systems. Author Biography: Robert Lewis is the UK expert on two IEC working groups defining new standards for industrial control software, covering distributed control systems (IEC 61499) and PLCs (IEC 61131). He is a fellow of the iee and had been involved with the development of software for industrial control applications for over 15 years. Recently, he has been working in the field of design and verification of safety critical systems. He is also the author of the book Programming Industrial Control systems Using IEC 61131 (iee, 1998).
In recent years there has been considerable interest in applying sensor array signal processing techniques to a variety of radar applications. The use of adaptive spatial and temporal filtering techniques has been wid...
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In recent years there has been considerable interest in applying sensor array signal processing techniques to a variety of radar applications. The use of adaptive spatial and temporal filtering techniques has been widely discussed. The relative expense of building hardware and conducting experiments has led to a strong emphasis on simulation as a way of developing new equipment, but there are currently no software tools available that are particularly suited to the problems of simulating sensor array systems. This paper describes the current state of development of an adaptive array processing toolset (AdAPT) (1), which is capable of modelling systems comprising large numbers of sensors. AdAPT encompasses modelling a target environment, design of array hardware, application and design of signal processing algorithms and the display and interaction of data as it flows through the design scenario. We also discuss the graphical user interface to AdAPT.
object-oriented technologies are rapidly making a substantial impact on the design and engineering of many kinds of software system. Their success is motivated by the increasingly widespread recognition that a complet...
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object-oriented technologies are rapidly making a substantial impact on the design and engineering of many kinds of software system. Their success is motivated by the increasingly widespread recognition that a complete and correct specification of requirements for a large software system cannot be articulated in advance. The techniques of object-oriented programming particularly support software re-use and system evolution, and thereby promise to provide a solution by allowing systems to be built incrementally, capturing requirements in parallel with the development of abstractions, frameworks and partial implementation. The paper proposes explains basic object-oriented terminology and concepts. Static and dynamic aspects of the object model are introduced and illustrated, with observations about how objects are constructed, what their properties are, how they are used, and how they are related.< >
objectorientedsystems are too new for a universal methodology for implementation to have evolved. Only a few implementations have been discussed in any detail in the literature. The authors discuss one of the most d...
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objectorientedsystems are too new for a universal methodology for implementation to have evolved. Only a few implementations have been discussed in any detail in the literature. The authors discuss one of the most difficult parts of the implementation: the persistent storage of methods represented by explicit code stored with the data. They do this for an engineering environment, where methods may include processes which compute the relevant laws of physics and chemistry, carry out substantial numeric processing and process images as well as the more common processes which search through large knowledge bases, execute logical rules and analyse text objects.< >
Examines the effectiveness of applying object-oriented programming (OOP) methodologies to the synthesis and implementation of artificial neural networks (ANN). Included in the discussion are the range of potential map...
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Examines the effectiveness of applying object-oriented programming (OOP) methodologies to the synthesis and implementation of artificial neural networks (ANN). Included in the discussion are the range of potential mappings between OOP and ANN methodologies, OOP based development environments for ANN, and OOP based ANN description languages. The effectiveness of each of these strategies and their effect upon the development cycle is explored. The run-time performance penalties incurred by using object-oriented languages and systems is reported and includes a summary of experimental results.< >
The Fusion method has been developed by the object-orienteddesign Group at Hewlett Packard Laboratories, Bristol. The method builds on existing, first generation, methods, for example, Booch, OMT, and CRC, and provid...
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The Fusion method has been developed by the object-orienteddesign Group at Hewlett Packard Laboratories, Bristol. The method builds on existing, first generation, methods, for example, Booch, OMT, and CRC, and provides a direct route from a requirements definition through to a programming language implementation. Fusion is a systematic method and has been designed for use by medium to large size teams in the industrial environment. The paper gives a short and simplified description of the method together with a brief report of its promotion both inside and outside of HP.< >
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