Showing papers in "Computers in Industry in 1993"

TL;DR: An overview of feature modelling builds on solid modelling, an overview of advanced solid modelling is given, with emphasis on the concepts of parametric and constraint-based modelling.

TL;DR: A systematic method to modify the performance index table such that the required system time response is achieved is proposed and a ball and beam apparatus has been used to illustrate the effectiveness of the proposed control structure.

TL;DR: In this article, the authors present a review of the work done to date on the design an FMS in the areas of facilities design, material handling system design, control system design and scheduling.

TL;DR: In this article, the authors focus on the scheduling phase of flexible manufacturing systems (FMSs) and establish six decision points involved in the operations among parts, AGVs and machines.

TL;DR: In this paper, the adequacy of idefo as a project plan modelling tool for project risk assessment is examined and modifications and enhancements to improve idefo's descriptive power are suggested.

TL;DR: In this article, the authors discuss possible criteria for the design of an automated shape retrieval system for two-dimensional engineering drawings and describe the implementation and evaluation of a prototype system, safari (Shape Analysis For Automatic Retrieval of Images), based on these principles.

TL;DR: In the conception presented here features are used as “vehicles” to introduce functional aspects into CAD systems and CAD techniques, because capacities like automatic classification or functional simulation can greatly profit from or even only be accomplished by processing functional information.

TL;DR: A computer-aided graphical technique that is capable of mapping all of the relevant constraints and a number of objective function contours in the cutting-speed vs. feed-rate plane is described and is suitable for a sensitivity analysis.

TL;DR: In this paper, a simplified predictive control approach is presented that allows systematic handling of constraints through LP without requiring large computational effort, and the performance and robustness of the proposed approach are compared with the general approach on process models exhibiting interactions, time-delays, and inverse response, through computer simulations.

TL;DR: In this article, the authors propose a procedure to include the constraints of manufacturing in the dimensioning and the tolerancing of a workpiece in order to obtain a part model in medium dimensions.

TL;DR: In this paper, a design of a fuzzy controller for hydraulic servo systems is described, and the design procedure, especially the procedures for the tuning of scaling factors and the quantization, are described.

TL;DR: Demographic characteristics, job categories, hierarchical positions and the extent of computer training, as they relate to the degree (of) and dependency on computer usage, were examined by a random sample of employees from a large Australian telecommunications organization.

TL;DR: A computer-aided selection procedure for suggesting candidate nontraditional machining operations is described, using an interactively generated 16-digits classification code to eliminate unsuitable combinations from consideration and rank the remainder.

TL;DR: In order to develop a procedure for consistent, unambiguous data abstraction from a generic data structure, the foundation on which the procedure is based is crucial and it is believed that PDES / STEP, although not fully developed, will be able to meet those requirements.

TL;DR: In this article, the authors examined the use of adaptive resonance theory (ART) to assess the machine condition through vibration signals, and proposed a fault classification system based on the ART neural network.

TL;DR: A short-form measure of implementation success is consolidated from the IS evaluation literature and presented as a possible benchmark for assessing the validity of information system (IS) evaluation techniques.

TL;DR: In this paper, a study has been carried out in a sugar industry located in Tamil Nadu, India, where the plant is shut down for a couple of shifts for periodic overhauling, corrective and minor preventive maintenance activities, and inspections.

TL;DR: A cutter path planning algorithm is developed as part of a procedure for the automatic generation of NC machine programs beginning with a part description within a CAD system in the form of a simple and functional CAD to 2-axis numerical control programming interface.

TL;DR: In the present work, the basic characteristics of waste minimization are described, and the applicability of AI techniques to Waste minimization is delineated.

TL;DR: In this paper, the authors present the findings on how Hong Kong manufacturers use computer-based information systems for production planning and control and conclude that the behavior of the manufacturers is revealed in their expectations and attitudes about the use of decision support systems.

TL;DR: In this article, the problem of scheduling n jobs with deterministic processing times on a single machine is considered and an algorithm by means of which the set of all optimal sequences is obtained using the SLK due date assignment method, is provided.

TL;DR: In this paper, an expert system is presented to help plan and train shielded metal arc welding (SMAW) operations in Prolog, which accumulates most of the available information on the SMAW process including edge preparation, electrode selection, economic evaluation, analysis of weld defects, and trouble-shooting.

TL;DR: In this article, a backward growing approach to manufacturing feature extraction and machined volume decomposition is discussed, where B_Grow is incorporated in the QTC II system, an integrated design/manufacturing system, to handle protrusion features for process planning.

TL;DR: In this article, the authors describe the problems and benefits involved in implementing a computer inventory control system in a particular lighting products manufacturing company, which is directed at managers and analysts in small industries, and should help them anticipate the likely problems that may arise when implementing similar systems.

TL;DR: This work presents a set of representation formalisms which allow to model this approach to production plan generation very closely and is demonstrated in the CAPP system PIM (Planning In Manufacturing), which has been developed as a prototype.

TL;DR: In this paper, the authors present a new approach which utilizes list representation to assist the analysis as well as the computation during the generation of tolerance charts, which has been successfully implemented on a computer-aided design software based on a personal computer.

TL;DR: This paper will concentrate on form features, and survey the different approaches to extract features from an existing solid model, and derive requirements for a feature-based modelling system.

TL;DR: In this article, a new approach to production management has been developed, called all-embracing technology, which covers all aspects of the manufacturing process and incorporates technology in production management, thereby allowing to make crucial decisions at the right time and by the qualified professionals.

TL;DR: In this article, a computer-aided process planning system (CAPP) that generates least-cost alternate plans for a product mix is presented. But it is limited to the use of a single process plan per part due to frequent non-availability of machines and other resources recommended by the CAPP system.

TL;DR: A number of conclusions and recommendations are made which reflect the experience gained and the information collected from a European study among users on the UIs.