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IEEE Transactions on Systems, Man, and Cybernetics

Issue 1 • Jan/Feb 1993

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Displaying Results 1 - 25 of 33
  • Robust contingency plans for transportation investment planning

    Publication Year: 1993, Page(s):5 - 13
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (848 KB)

    A multistage decision process for transportation investment planning is described. Most transportation investment problems inherently involve multiple criteria and uncertainty. To deal with the variations arising from changes in external environments, robust contingency plans should be integrated in the planning process-not after plans are developed-to account for uncertainty. With the proposed de... View full abstract»

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  • A methodology for supporting long-term nuclear energy development decisions-a case of Taiwan

    Publication Year: 1993, Page(s):248 - 256
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    A methodology to support long-term nuclear energy development decisions in Taiwan is proposed. Based on the framework of a decision-support system, the study focuses on the development of a multiobjective decision submodel in the model base subsystem. Due to the complexity and dependency of the variables, the decision model is in the quartic form. The study shows that the proposed method can be us... View full abstract»

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  • Real-time collision avoidance in teleoperated whole-sensitive robot arm manipulators

    Publication Year: 1993, Page(s):194 - 203
    Cited by:  Papers (108)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (952 KB)

    The problem of generating collision-free motion in an operator-assisted teleoperated robot arm manipulator system is discussed. The concentration is on several system requirements: a real real-time operation, a guarantee of collision-free motion for the entire body of the arm manipulator, and an ability to handle obstacles of arbitrary shapes. The suggested methodology draws on recent work on moti... View full abstract»

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  • Extending error recovery capability in manufacturing by machine reasoning

    Publication Year: 1993, Page(s):221 - 228
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (868 KB)

    In industrial applications, the quantity of error recovery codes far exceeds that required for supervisory control. Declarative programming techniques can be integrated with the traditional procedural control to reduce the efforts in developing error recovery codes and to provide flexibility for future modifications as new error types are encountered. A flexible control system that employs reasoni... View full abstract»

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  • Linearization of manipulator dynamics using spatial operators

    Publication Year: 1993, Page(s):239 - 248
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (708 KB)

    Techniques from the spatial operator algebra are used to obtain closed-form operator expressions for two types of linearized dynamics models: the linearized inverse and forward dynamics models. Spatially recursive algorithms of O(n) and O(n 2) complexity for the computation of the perturbation vector and coefficient matrices for the linearized inverse... View full abstract»

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  • A penalty function approach to alternative pairwise comparisons in ISMAUT

    Publication Year: 1993, Page(s):330 - 333
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    In imprecisely specified multiattribute utility theory (ISMAUT), a pairwise comparison of two alternatives produces a bilinear inequality, composed of trade-off weights and value scores. This correspondence investigates a penalty function approach for solving the concomitant nonlinear programs that may be necessary to solve in order to determine an accurate partial order on the alternatives View full abstract»

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  • The effects of field of view size on the control of roll motion

    Publication Year: 1993, Page(s):183 - 193
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (932 KB)

    Human operator characteristics were measured during a fixed-base visual tracking task where the field of view (FOV) varied from 10° to 120°. Using the critical tracking (CT) task, five subjects were tested at 10°, 20°, 40°, 80°, and 120° FOV. The measured effective time delay declined exponentially as the FOV increased. The corresponding root-mean-squared (RMS) error fo... View full abstract»

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  • Optimization of detection networks. II. Tree structures

    Publication Year: 1993, Page(s):211 - 221
    Cited by:  Papers (44)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (952 KB)

    A distributed binary detection problem with multimessage (⩾1 bit) communications is considered, wherein the nodes (sensors, decision-makers (DMs)) of the system are organized in the form of a tree with multiple root nodes. A numerical algorithm is developed for determining the optimal decision rule at each node assuming monotone cost functions imposed only on the root nodes. It is assumed that... View full abstract»

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  • Determining optimally ordered pairs using edge-coloring of graphs

    Publication Year: 1993, Page(s):237 - 239
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    Tables to find optimally ordered pairs for the assessment of judgemental information were published. The optimality of such orders according to spacing and balance requirements is proved using edge-colorings of graphs. In addition, the constructive proof leads to an elegant algorithm for constructing orders by hand without consulting tables View full abstract»

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  • Efficient evaluation of the feasibility of robot displacement trajectories

    Publication Year: 1993, Page(s):324 - 330
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    A robot motion trajectory is feasible if it lies entirely in the robot's workspace. It is often desirable to be able to evaluate efficiently if a motion trajectory is feasible so as to terminate infeasible trajectories before their execution begins. A method that allows one to determine the feasibility of displacement trajectories of wrist-partitioned robot manipulators is described. The workspace... View full abstract»

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  • A review of synthesis techniques for Petri nets with applications to automated manufacturing systems

    Publication Year: 1993, Page(s):301 - 312
    Cited by:  Papers (66)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1116 KB)

    Research results in both bottom-up and top-down synthesis techniques for Petri net modeling are reviewed. These methods can be adopted for representing parallel and distributed application environments such as automated manufacturing systems. Bottom-up techniques, consisting of the merging of places and sharing of simple elementary paths, have the advantage of ease of system description since the ... View full abstract»

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  • Transformations between delta and forward shift operator transfer function models

    Publication Year: 1993, Page(s):295 - 296
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    For control system analysis and design, and high-speed real-time computation, the transformations between the delta and forward shift operator transfer function models of dynamic physical systems are highlighted. In the fast sampling limit, the delta operator model tends to the analog dynamic system model. This intrinsic property of the delta operator model unifies continuous and discrete time con... View full abstract»

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  • Two-layer multiple-variable fuzzy logic controller

    Publication Year: 1993, Page(s):277 - 285
    Cited by:  Papers (6)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (688 KB)

    A new type of multiple-variable fuzzy logic controller is proposed, called the two-layer multiple-variable fuzzy logic controller. In the first layer, various fuzzy decision-making logics are applied to fuzzy variables. The feedback is the weighted sum of the fuzzy variables obtained from fuzzy inference. In the second layer, the weight of each variable is determined by fuzzy inference and system ... View full abstract»

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  • Systematic methods for efficient modeling and dynamics computation of flexible robot manipulators

    Publication Year: 1993, Page(s):77 - 95
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1064 KB)

    Systematic methods for efficient modeling and dynamics computation are developed, using the Lagrangian assumed modes method. The methods greatly reduce the number of mathematical operations (i.e. multiplications and additions) required for the modeling and dynamics computation of flexible manipulators. The link deflection is described by a truncated modal expansion. The operations of 3×3 mat... View full abstract»

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  • Knowledge-based connectionism for revising domain theories

    Publication Year: 1993, Page(s):173 - 182
    Cited by:  Papers (84)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB)

    A knowledge-based connectionist model for machine learning referred to as KBCNN is presented. In the KBCNN learning model, useful domain attributes and concepts are first identified and linked in a way consistent with initial domain knowledge, and then the links are weighted properly so as to maintain the semantics. Hidden units and additional connections may be introduced into this initial connec... View full abstract»

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  • Qualitative fault diagnosis in systems with nonintermittent concurrent faults: a subjective approach

    Publication Year: 1993, Page(s):14 - 30
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1512 KB)

    Major approaches to automatic fault diagnosis of industrial plants are either subjective or objective. Subjective approaches imitate and synthesize the way that human experts diagnose faults. Objective approaches automate a portion of a diagnostic task which, due to cognitive limitation, humans do not handle efficiently. Currently available subjective fault diagnosis techniques suffer from certain... View full abstract»

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  • Counting the number of classes in a fuzzy set

    Publication Year: 1993, Page(s):257 - 264
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    The issue of counting the number of elements in fuzzy set is discussed. The issue of counting the number of equivalence classes in a fuzzy subset is investigated. The more general problem of counting how many similarity classes are present in a fuzzy subset is then examined. This becomes a very complex problem because of the lack of distinct boundaries in the similarity classes View full abstract»

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  • Dynamic system identification using neural networks

    Publication Year: 1993, Page(s):204 - 211
    Cited by:  Papers (30)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    A practical neural network design method for the identification of both the direct transfer function and inverse transfer function of an object plant is proposed. As a practical application of the direct transfer function identifier, a nonlinear plant simulator is also proposed. Simulated and experimental results for a second-order plant show that identification can be satisfactorily achieved and ... View full abstract»

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  • Recognition of partially occluded objects

    Publication Year: 1993, Page(s):228 - 236
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1152 KB)

    A computer vision system for the recognition of real world image is developed and reported. The system is capable of identifying multiple overlapped objects in a scene without stringent restrictions on their size, shape and orientation. An object shape is identified by the system through the detection of selected discrete feature segments in the contour code instead of attempting to search for a c... View full abstract»

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  • A strategic negotiations model with applications to an international crisis

    Publication Year: 1993, Page(s):313 - 323
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1192 KB)

    The area of automated negotiation has been of particular interest in AI due to the important role negotiations play in facilitating understanding and the achievement of cooperation among entities with differing interests, whether they be individuals, organizations, governments, or automated agents. A strategic model for negotiation of alternative offers is presented with specific application to in... View full abstract»

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  • Properties of the delta operator model of dynamic physical systems

    Publication Year: 1993, Page(s):296 - 301
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    For control system analysis and design, and high-speed real-time computation, the computational formulation, properties and applications of the delta operator model of dynamic physical systems are highlighted. Doubling algorithms for reliable computation are formulated, and the transfer function matrix of the delta operator model is illustrated. In the fast sampling limit, the delta operator model... View full abstract»

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  • Determining the collision-free joint space graph for two cooperating robot manipulators

    Publication Year: 1993, Page(s):285 - 294
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (968 KB)

    The problem of path planning for two planar robot manipulators that cooperate in carrying a rectangular object from an initial position and orientation to a destination position and orientation in a 2-D environment is investigated. The two robot arms, the carried object, and the straight line connecting the two robot bases are modeled as a 6-link closed chain. The problem of path planning for the ... View full abstract»

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  • Stealth terrain navigation

    Publication Year: 1993, Page(s):96 - 110
    Cited by:  Papers (23)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1296 KB)

    A method for solving visibility-based terrain path planning problems using massively parallel hypercube machines is proposed. A typical example is to find a path that is hidden from moving adversaries. This kind of problem can be generalized as a time-varying constrained path planning problem and is proven to be computationally hard. An approximation based on both temporal and, spatial sampling is... View full abstract»

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  • The use of fuzzy relational thesauri for classificatory problem solving in information retrieval and expert systems

    Publication Year: 1993, Page(s):31 - 41
    Cited by:  Papers (21)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1084 KB)

    The problem-solving strategy applied in knowledge-based systems may often be characterized as classification. Central to classification is computation of the degree to which an object is an instance of a given class (concept, category). Two kinds of problems, namely object-querying and class-querying, as exemplified by, respectively, information retrieval systems and expert systems, are distinguis... View full abstract»

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  • An application of Simon's theory on the architecture of complex systems

    Publication Year: 1993, Page(s):264 - 267
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    H.A. Simon's theory about complexity is applied to reveal the hierarchic structure and near decomposability of industrial systems in Guangzhou, China. The hierarchy presented is substantially different from those in other works since only the interactions of different orders of magnitude in different levels are taken into account, the description for complex systems is remarkably simplified View full abstract»

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