A set of tools from the Artificial Intelligence domain have been integrated into Matlab/Simulink taking benefit of its capabilities as a CACSD framework. Abstraction tools, a representation language for qualitative re...
详细信息
A set of tools from the Artificial Intelligence domain have been integrated into Matlab/Simulink taking benefit of its capabilities as a CACSD framework. Abstraction tools, a representation language for qualitative reasoning and expert systems (ES) have been selected with this purpose. The main goal is to extend this known framework to represent expert knowledge at several degrees of abstraction. Three different levels of abstraction have been defined and each level is provided with specific tools to deal with significant information coming from inferior levels.
This paper presents a fault detection survey applied to the predictive maintenance and monitoring using the vibratory analysis of industrial mechanical systems. Based on manufacturers' considerations the object-Or...
详细信息
This paper presents a fault detection survey applied to the predictive maintenance and monitoring using the vibratory analysis of industrial mechanical systems. Based on manufacturers' considerations the object-oriented Concept "VIBRALYSE" is described here. It is illustrated by two applications involving an autonomous, low cost and versatile embedded device based on the spectral analysis. The first application concerns rotor spinning in textile industry. It involves the recognition of wear and tear of rotor bearings and the detection of a potential imbalance in the rotor. The second application is about a fault detection process applied to circular structures. This process is based on the modal analysis and includes the development of an intelligent impactor.
This paper describes an implementation procedure of distributed control software for robot-based manufacturing systems. Robots and other devices such as conveyors and manufacturing machines are defined as object-orien...
详细信息
This paper describes an implementation procedure of distributed control software for robot-based manufacturing systems. Robots and other devices such as conveyors and manufacturing machines are defined as object-oriented communicating sequential processes. A modular and hierarchical approach is adopted to define a set of Petri net type diagrams, which represent concurrent control processes for such devices, and asynchronous and synchronous interactions in global process interaction nets. Operational specifications are directly transformed to executable codes in a parallel programming language, such as occam. Implementations of control software on a multiprocessing environment and transputer networks are comparatively evaluated.
A component-centred approach to the derivation of the diagnostic rules for continuous processes is presented below. It strongly relies on the causal representation of fault propagation within the basic process units w...
详细信息
A component-centred approach to the derivation of the diagnostic rules for continuous processes is presented below. It strongly relies on the causal representation of fault propagation within the basic process units where the modelling convention of Hunt et al. (1993) is adopted. Basic information concerning the disturbance and fault propagation is stored in terms of the unit mini-fault tree. Additional information on special process structures is treated systematically by making use of template trees. The diagnostic rules for the entire process are obtained by chaining the mini-trees and combining the deviations caused by a fault. The paper presents some improvements concerning more efficient on-line use of the resulting rules. A major contribution concerns the realisation of the CAD environment for the prototyping of the diagnostic systems based on the process flowsheet and library of process components. Such a concept enables the re-usability of the basic process component models and the incremental development of the components library.
This paper presents an object-oriented extension to the real-time programming language PEARL. The new language preserves PEARL’s expressiveness for timeliness and industrial processes and, at same time, improves the ...
详细信息
This paper presents an object-oriented extension to the real-time programming language PEARL. The new language preserves PEARL’s expressiveness for timeliness and industrial processes and, at same time, improves the language’s readability and manageability (through the better encapsulation paradigm derived from the object concept). The proposed language is fully backward compatible with PEARL and, moreover, with the resulting object model one is in a position to define inter and intra object parallelism in a transparent and simple way.
A knowledge representation scheme for systems modelling should support system qualification, system decomposition and model composition, and the generation of representations suitable for multiple types of model servi...
详细信息
A knowledge representation scheme for systems modelling should support system qualification, system decomposition and model composition, and the generation of representations suitable for multiple types of model service. This paper describes a prototype, based on domain specific knowledge representations, aimed at providing multiple model services. The functionality of some typical reasoning rules used for manipulating the knowledge represented in different objects is outlined and the desired features of applications also indicated. The results show that a unified approach, intelligent object-oriented modelling, could provide an ideal approach to the problem of multi-disciplinary system modelling and might be responsible for progress that eases the difficult task of encoding heterogeneous knowledge of realworld applications
This paper describes work on developing a tool to support the analysis of the impact of an FMS, at the stage of design of the system. The tool described is an objectoriented discrete-event simulation program capable o...
详细信息
This paper describes work on developing a tool to support the analysis of the impact of an FMS, at the stage of design of the system. The tool described is an objectoriented discrete-event simulation program capable of modeling alternative systems configurations and analysing the FMS using multiple performance measures. The simulator is implemented in C++ and after being totally verified, it is in the process of validation. The main objective of the paper is to present a complete description of the simulation model, with an emphasis on the conceptual design.
The problem of development of the support system for design and introducing of intelligent control algorithms for the complex controlling system components is discussed. The model of controlling algorithm, which combi...
详细信息
The problem of development of the support system for design and introducing of intelligent control algorithms for the complex controlling system components is discussed. The model of controlling algorithm, which combines dynamic, intelligent and object-oriented approaches is suggested and analyzed. The intelligent possibilities and problems of real-time interpretation of the model are considered. The application in software for spacecraft components control algorithms design is discussed.
This paper presents a methodology for extracting objects from legacy imperative code. The parameter-based object identification (PBOI) methodology is based on the thesis that object attributes manifest themselves as d...
详细信息
ISBN:
(纸本)9780818679612
This paper presents a methodology for extracting objects from legacy imperative code. The parameter-based object identification (PBOI) methodology is based on the thesis that object attributes manifest themselves as data items passed from subprogram to subprogram in the imperative paradigm. A taxonomy of imperative subprograms is presented and the PBOI methodology is defined. Several examples are provided.
A methodology for the integration of manufacturing process planning and real-time scheduling in a feature-based manufacturing environment is presented. Most research in this area focuses upon narrowly-defined topics t...
详细信息
暂无评论