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Computer Integrated Manufacturing, 1990., Proceedings of Rensselaer's Second International Conference on

21-23 May 1990

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  • Proceedings of Rensselaer's Second International Conference on Computer Integrated Manufacturing

    Publication Year: 1990
    Request permission for commercial reuse | PDF file iconPDF (39 KB)
    Freely Available from IEEE
  • Control of surface topographies formed during machining

    Publication Year: 1990, Page(s):339 - 345
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (612 KB)

    An approach is presented from a system engineering perspective to integrate tool-path control and surface topography generation for the quality control of machined surfaces. This approach is based on strategic links between variability of material properties, cutting mechanics in microscale, structural dynamics of machine tools, integration of toll vibratory and geometric motions, and surface topo... View full abstract»

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  • Modelling CIM enterprises with CIM-OSA

    Publication Year: 1990, Page(s):236 - 243
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (668 KB)

    The basic concepts of CIM-OSA, an open systems architecture for CIM, being developed by AMICE are presented. The function view and the information view of CIM-OSA are discussed and illustrated. They provide a unique set of advanced features to model functionality, behavior, information and resources of CIM systems at three distinct levels (requirements definition, design specification and implemen... View full abstract»

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  • Automatic process generation: the surround problem

    Publication Year: 1990, Page(s):331 - 338
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (788 KB)

    Automatic process generation (APG) is presented as part of a parametric approach to engineering design and manufacture. A prototype system consisting of a parametric geometric part-design system, a robust automated solid modeler, and an APG system has been built. Together these components enable an engineer to design a part parametrically, and to specify a minimal set of process parameters; the pa... View full abstract»

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  • An intelligent interface node for use in computer-integrated manufacturing (CIM)

    Publication Year: 1990, Page(s):231 - 235
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    Design and simulation results are presented for an expert-system-based interface node appropriate for use in a CIM environment. The interface node is a major step toward resolving two of the primary problems present in CIM applications: inadequate communications resources for handling real-time data requirements including priority interrupts, and uncertainty of data concerning conditions in the ma... View full abstract»

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  • A computer integrated system for autonomous management of production (illustrated by applications in textile manufacturing)

    Publication Year: 1990, Page(s):324 - 330
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    A computer-based manufacturing decision system prototype that can be implemented in a wide variety of production workplaces to aid in identifying production problems, production-improvement opportunities, and appropriate management actions is described. The system described is designed to access production-performance data, to identify symptoms of poor performance, to diagnose likely causes of poo... View full abstract»

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  • A formal model for reactive robot plans

    Publication Year: 1990, Page(s):418 - 423
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    An approach to the representation and analysis of flexible plans, i.e. plans that react to suit the current environment, is described. A formal model has been constructed for building and reasoning about such plans. The model can represent both the plan and the uncertain environment in which the plan is to be carried out. The concept of a flexible plan is demonstrated using a mixed-batch assembly ... View full abstract»

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  • Integrating semiconductor process design and manufacture using a unified process flow representation

    Publication Year: 1990, Page(s):224 - 230
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    Concepts and data structures which can be used to allow effective linkage between manufacturing and design activities and hence facilitate improved process development are proposed. Central to the approach is the use of a common representation of the manufacturing process flow, used throughout the life-cycle of the process, including conceptual design, simulation, manufacturing, analysis, and main... View full abstract»

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  • Computer-aided drawing check for CAD systems-a method for the checking of dimensions in mechanical part drawings

    Publication Year: 1990, Page(s):160 - 167
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    A method is described for systematically checking dimensional errors such as deficiency and/or redundancy of dimensions, input errors in dimension figures and symbols, etc. The logic for finding dimensional errors is written by using a procedural language. A geometric model and a topological-approach model are used in this method. Checking for deficiency and redundancy of dimensions is based on gr... View full abstract»

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  • Optimal two-machine scheduling in a flexible flow system

    Publication Year: 1990, Page(s):47 - 54
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (596 KB)

    An approach to part-type selection and scheduling of parts in a two-machine flexible-flow line is presented. It consists of first selecting a small number of part types for simultaneous production (in suitable ratios in order to balance the workloads among the machines), and then scheduling the parts of each batch in order to minimize both completion time as well as the maximum level of in-process... View full abstract»

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  • Petri net analysis of a transfer-line protocol

    Publication Year: 1990, Page(s):186 - 192
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    Petri nets are applied to the bottom-up design of a handshaking protocol for transferring parts through a sequence of workstations. The authors illustrate the application of Petri-net theory to verify properties of the complete system behavior based on the structure of the Petri-net model. It is shown that communication between local controllers is modeled by places corresponding to upstream and d... View full abstract»

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  • Methodological approach of sequences determination using the disassembly method

    Publication Year: 1990, Page(s):483 - 490
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    A method which automatically determines the assembly/disassembly sequence of product units from the assembly drawing, the detail drawings, and the nomenclature of parts is described. Assembly corresponds to a system in which flow parts and data are to be placed in specific order. The operative sequence is the basic program of this system. It is hypothesized that the sequence of assembly is chronol... View full abstract»

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  • Assembly planning for B-rep objects

    Publication Year: 1990, Page(s):314 - 321
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    An automated manufacturing system requires the ability to simulate manipulation of objects given only their CAD models in order to establish valid assembly-process plans. A disassembly engine is presented which takes boundary representation (B-rep) models of components along with the positions of the components when they are assembled to form a product, as well as models of workcell components suc... View full abstract»

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  • Primary responsibility protocol in computer integrated manufacturing

    Publication Year: 1990, Page(s):458 - 465
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    A study on the data-generation and flow process in manufacturing leads to the following primary responsibility protocol (PRP): at every hierarchical level, the design and decision output space can be partitioned according to its primary responsibility allocations. Based on the PRP, a computer integrated manufacturing, engineering, and sales (PRIMES) system with distributed decision making and data... View full abstract»

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  • Modeling, identification, and control of flexible structures

    Publication Year: 1990, Page(s):412 - 417
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    The initial results of efforts in the modeling identification, and control of flexible structures, and the four experimental setups in various stages of construction are described. They are a single-link flexible beam, a two-dimensional flexible plate, a two-link flexible manipulator, and a five-axis flexibly jointed robot. For the most mature structure, the single-link flexible beam, the authors ... View full abstract»

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  • Optimization by simulation in manufacturing flow control

    Publication Year: 1990, Page(s):214 - 221
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    A class of piecewise-deterministic control problems typically associated with manufacturing flow-control models is considered. The authors consider different approaches for the definition of a sub-optimal control policy. In particular, the method consisting of optimizing a policy in a class indexed over a given parameter set is addressed. This approach transforms a stochastic control problem into ... View full abstract»

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  • A suggested model program for CIM education

    Publication Year: 1990, Page(s):86 - 91
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    A model CIM (computer integrated manufacturing) education program is described. The program has used a strategy of industry-university collaboration in developing a multidisciplinary approach to CIM education incorporating a laboratory-intensive curriculum. It is believed that adoption of the integrative philosophy of a CIM enterprise should facilitate the continued development of a coherent, inte... View full abstract»

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  • Employing a computer integrated manufacturing methodology for improved product quality and reduced machine downtime

    Publication Year: 1990, Page(s):290 - 295
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    A methodology for using CIM for process improvement is presented. The technique places particular emphasis on reducing machine downtime and improving product quality. The authors present a tool that allows management to allocate resources to CIM projects most effectively in order to achieve maximum results with limited resources. Two applications of the CIM technology are presented. The major resu... View full abstract»

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  • Incorporating knowledge of geometric dimensioning and tolerancing into a feature-based CAD system

    Publication Year: 1990, Page(s):152 - 159
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    A system is described which aids a designer in assigning dimensions and tolerances to designs of mechanical parts. The system is constructed using an object-oriented approach. Designs are created using geometric features such as slots and holes. For each feature, there is knowledge about the object regarding appropriate ways to dimension and tolerance that feature. The tolerancing system used is u... View full abstract»

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  • Neural networks in manufacturing: possible impacts on cutting stock problems

    Publication Year: 1990, Page(s):531 - 537
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    The potential of neural networks is examined, and the effect of parallel processing on the solution of the stock-cutting problem is assessed. The conceptual model proposed integrates a feature-recognition network and a simulated annealing approach. The model uses a neocognitron neural network paradigm to generate data for assessing the degree of match between two irregular patterns. The informatio... View full abstract»

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  • Modeling temporal relations in task hierarchies for job shop scheduling

    Publication Year: 1990, Page(s):39 - 46
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    An overview of the cooperative scheduling system is presented, and the techniques used to represent and reason about the temporal relations between the tasks to be scheduled by the system are described. The approach taken models the temporal relations in a graph whose vertices are points in time and whose edges represent the temporal constraints between them as described by T.L. Dean (1985). The r... View full abstract»

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  • Fault detection and diagnosis in manufacturing systems: a behavioral model approach

    Publication Year: 1990, Page(s):252 - 259
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (748 KB)

    An approach to online fault detection and diagnosis in automated manufacturing systems with discrete controls and sensing is described. The approach is based on the concept of behavioural models of the individual system components. These models, which can be developed while the system is being designed, characterize the responses of the devices in the system to arbitrary input signals over the ran... View full abstract»

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  • Protenv: a programming environment for protocol development

    Publication Year: 1990, Page(s):178 - 185
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    The design and functionality of Protenv, a programming environment for protocol development, is described. Protenv runs under X windows and allows the user to develop protocols using Petri nets and Estelle. The combination of Petri nets and Estelle provides a precise protocol specification as well as a powerful way for graphical visualization and verification of protocols. The use of Protenv to sp... View full abstract»

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  • Performance analysis of automated manufacturing systems with blocking and deadlock

    Publication Year: 1990, Page(s):64 - 68
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    Petri net and Markov chain models are developed for manufacturing systems with blocking and deadlock. The authors compute the probability that the system in an absorbing (deadlocked) state, the mean time to deadlock, and the throughput before deadlock, etc., which can be used to compare the performance of various prevention and avoidance strategies. A systematic method for designing locks and inte... View full abstract»

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  • Qualitative modeling of assembly tasks in robot cells using coloured Petri nets

    Publication Year: 1990, Page(s):475 - 482
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    A methodology is presented to build colored Petri nets (CPN) describing assembly tasks performed by robot cells. The approach consists mainly of a catalog of CPN modules modeling the cell operations and a set of rules for module mating and reduction. It is pointed out that CPN can be used as a knowledge-representation tool for qualitative tasks plans. A modeling example of an assembly task perform... View full abstract»

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