By Topic

[Proceedings] 1988 International Conference on Computer Integrated Manufacturing

23-23 May 1988

Filter Results

Displaying Results 1 - 25 of 49
  • 1988 International Conference on Computer Integrated Manufacturing

    Publication Year: 1988
    Request permission for commercial reuse | PDF file iconPDF (24 KB)
    Freely Available from IEEE
  • The integration of manufacturing information systems

    Publication Year: 1988, Page(s):217 - 225
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    The status of computerization in industry is examined, using the results of a survey of European manufacturers. It is shown that some areas (e.g. inventory, design) are more computerized than are others, but that even where one firm has computerized multiple segments of its operation, the computer systems used are rarely integrated. Methods of integrating systems within and between businesses are ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A generalized calibration method for robots in manufacturing applications

    Publication Year: 1988, Page(s):266 - 272
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    A generalized method of robot calibration is presented. Using this method, the true values of the robot's joint and link parameters can be estimated, which would considerably improve the accuracy of current industrial robots and remove one of the major obstacles to the implementation of offline programming. This calibration method, unlike some previous techniques, is general in nature and applicat... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • IGES and PDES, the current status of product data exchange standard

    Publication Year: 1988, Page(s):210 - 216
    Cited by:  Papers (2)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    Currently, IGES (Initial Graphic Exchange Specification) is the international standard for exchange product definition data between CAD (computer-aided design) systems. However, due to its efficiencies, a new standard is in the process of development and will gradually replace IGES. It is believed that PDES will be less error-prone than IGES. Its improvements include free-form format representatio... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A facility-level CIM system

    Publication Year: 1988, Page(s):253 - 263
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (980 KB)

    Application modules are identified that clearly lend themselves to an integrated information flow in a controlled manner: CAD (computer-aided design) and CAPP (computer-aided process planning) consist of the product and process design centers of the proposed system respectively. MRP II undertakes the management of production plants to satisfy the market demand. The functional design of the system ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Automated design of fixtures for FMS

    Publication Year: 1988, Page(s):201 - 207
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    A system for the automated design of fixtures is under development at the University of Minnesota at Duluth and at the University of Birmingham, UK. This system is being developed on a microVAX and a GPX workstation using solid modeling CAD (computer-aided design) and a Lisp-based inference engine. The CAD-rulebase interface languages being used are Fortran and C. A structured set of rules has bee... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An extended horizon scheduling algorithm for the job-shop problem

    Publication Year: 1988, Page(s):249 - 252
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    A real-time scheduling algorithm for a flexible manufacturing system environment is described. This algorithm uses a schedule space search which is characterized by a heuristic-oriented approach based on simulation. The algorithm can be seen as a look-ahead dispatching rule, because the simulation-based search gives a forecast of how good a schedule can be, before choosing the best one. The algori... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Part families selection for computer integrated manufacturing systems

    Publication Year: 1988, Page(s):194 - 200
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    The problem of partitioning the part types produced by a flexible manufacturing system (FMS) is discussed. The system examined is designed to produce a set of part types, the number of which is too high to run simultaneously on the system. Constraints imposed by the specifications of the system, such as capacity of tool magazines, number of existing pallets and/or capacity of buffers are violated.... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Decision support systems for tool management in FMS

    Publication Year: 1988, Page(s):53 - 61
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    A decision support system (DSS) for tool management in flexible manufacturing systems (FMS) is presented. First an overview of tool management functions and tooling system components is given. Then the essential components in the design of a DSS are presented and the implementation and benefits derived from the system are discussed View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Parallel machine scheduling using Lagrangian relaxation

    Publication Year: 1988, Page(s):244 - 248
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    A two-level optimization methodology is presented for scheduling independent jobs with due dates on parallel machines (resources). A Lagrangian relaxation technique is applied to a constrained integer programming formulation of the problem. A decomposition by job of the dual problem serves to simplify the solution at a low level. The high-level problem is then solved by a subgradient method. In ge... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A multilevel production control model for FMS with disturbances

    Publication Year: 1988, Page(s):81 - 84
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    A hierarchical flexible manufacturing system (FMS) is discussed. Three levels are considered-factory, section and machine-each level presenting a different stochastic optimization problem. The machines are universal. The rates of demand and the due dates are pregiven deterministically. Each machine processes parts with several possible speeds which are subject to disturbances. On the machine level... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • FRAFES, a frame-based feature extraction system

    Publication Year: 1988, Page(s):296 - 305
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    A prototype feature extraction system based on frame representation of part data and features is presented. A feature description language (FDL), based on semantic nets, is described. The objective of this approach is to provide an intelligent and flexible link between design and manufacturing. Finally, the system implementation and sample results are discussed View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Automatic construction of assembly partial-order graphs

    Publication Year: 1988, Page(s):383 - 392
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    A system is presented which automatically constructs an assembly partial-order graph from an object-oriented model describing parts and their connections. The construction is based on the principle of assembly by disassembly and on assembly heuristics representing criteria for preferred subassemblies. The system first identifies disassemblable parts and subassemblies by reasoning geometric and phy... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Knowledge-based system for group technology (KBGT)

    Publication Year: 1988, Page(s):184 - 193
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    A knowledge-based system, KBGT, for solving the group technology problem is presented. The formulation of the group technology problem involves constraints related to machine capacity, material handling system capability, and machine cell dimension. It has been developed for an automated manufacturing system. The KBGT takes advantage of the developments in expert systems and optimization. Two basi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Intelligent decision support for manufacturing enterprise

    Publication Year: 1988, Page(s):44 - 52
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (760 KB)

    A set of ongoing research activities at the Decision System Laboratory (DSL) at Stanford University is briefly described. These activities address the global issue of strategic integration from the technical point of view of developing intelligent decision support systems (IDSS) which support the management process in strategic integration. The approach is to break the global issue into three basi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dynamic programming solution to the stochastic multiple lot dispatching in an FMS

    Publication Year: 1988, Page(s):238 - 243
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    The production scheduling problem considered is related to the planning of operations of a flexible manufacturing cell composed of a punch press and a shear that produce parts from metal plates. A stochastic control problem is identified, to optimize the expected discounted cost of the system. The control consists in dispatching n bins to a processor unit which can process only one bin a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Production planning for a prone to failures manufacturing facility with stochastic demand

    Publication Year: 1988, Page(s):74 - 80
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    The production planning of a manufacturing facility with uncertain capacity and stochastic demand is discussed. The plan is based on the hedging point policy as derived by S.B. Gershwin et al. (1985). The same policy is applied for a system that has stochastic demand and is prone to failures. The same policy can also be used to determine the size of the buffer for a system with two machines. Simul... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Automated generation and evaluation of control programs for discrete manufacturing processes

    Publication Year: 1988, Page(s):92 - 99
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (676 KB)

    A set of software tools is described for specifying the control and process dynamics for discrete manufacturing systems. Specifications are entered and modified in a relational database using a formalism that naturally reflects the functional components of a discrete control system. A Petri-net model of the control and process logic is extracted automatically from the database, and various analysi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Integration of design, planning, and manufacturing subsystems in sheet metal processing

    Publication Year: 1988, Page(s):138 - 143
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    The elements and integration are described of a prototype manufacturing system which achieves a fully automated link between all CIM (computer-integrated manufacturing) functions from design to machine output. A generative computer-aided process-planning module operates directly on CAD exchange files, supplying part process information to a master production compiler. The compiler, in turn, combin... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Mathematical techniques in solid modeling

    Publication Year: 1988, Page(s):290 - 295
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    Basic computational problems in mathematics for solid modeling are discussed. It is shown how merging results from algebras, geometry, and approximation theory into effect tools can lead to a higher level of performance in solid modeling. Effective mathematical techniques are shown, such as singularity analysis and resolution, parameterization and implicitization, residue computation and Chinese r... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The strategic design driven inspection of machined parts

    Publication Year: 1988, Page(s):122 - 128
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (700 KB)

    A system for the automatic dimensional inspection of machined industrial parts is under development. Key attributes of the system are its use of design knowledge, i.e. the CAD (computer-aided design) description of the part to be inspected and the strategic use of diverse sensors to generate geometric descriptions of the actual part being inspected as well as the designer's conception of the part.... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An integrated analysis of flexible assembly systems

    Publication Year: 1988, Page(s):377 - 382
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    An attempt to define the requirements for a flexible automated assembly system is discussed. The system's flexibility is a structural characteristic that depends on the physical design of the system and the product. The author addresses three critical questions: (i) what is flexible assembly, (ii) what is design for assembly, and (iii) how is it possible to economically analyze assembly lines? The... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A hierarchical modeling methodology for flexible manufacturing systems using extended Petri nets

    Publication Year: 1988, Page(s):350 - 356
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    A theory of extended Petri nets is proposed to enable the modeling of flexible manufacturing systems in a more comprehensive manner. The theory considers both the flow of control and flow of information, resources and parts in a system. A methodology for hierarchically modeling manufacturing systems using extended Petri net techniques, to ensure a priori the desirable properties of system performa... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Asynchronous parallel paint systems: sequencing and control issues in JIT environment

    Publication Year: 1988, Page(s):327 - 336
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    The asynchronous parallel painting of vehicles in modern vehicle assembly facilities provides the flexibility to handle variations in mix, quality, and equipment uptimes. However, this results in an unpredictable output sequence of vehicles leading to problems in material flow, especially in plants that use just-in-time (JIT) parts delivery. A flow model is developed that captures the relationship... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Animated sensitivity analysis for production planning

    Publication Year: 1988, Page(s):171 - 180
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (672 KB)

    The use of advanced computer graphics technology for animated sensitivity analysis is discussed in the context of production planning. Animated sensitivity analysis allows users to make continuous `local' changes to the state of the system (e.g. the schedule) and simultaneously see appropriate (though not optimal) global changes. The concept is illustrated with two examples from production schedul... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.