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Systems, Man and Cybernetics, IEEE Transactions on

Issue 1 • Date Jan/Feb 1993

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Displaying Results 1 - 25 of 33
  • Two-layer multiple-variable fuzzy logic controller

    Publication Year: 1993 , Page(s): 277 - 285
    Cited by:  Papers (6)  |  Patents (2)
    Save to Project icon | Request Permissions | 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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  • Genetics-based machine learning and behavior-based robotics: a new synthesis

    Publication Year: 1993 , Page(s): 141 - 154
    Cited by:  Papers (34)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1256 KB)  

    Intelligent robots should be able to use sensor information to learn how to behave in a changing environment. As environmental complexity grows, the learning task becomes more and more difficult. This problem is faced using an architecture based on learning classifier systems and on the structural properties of animal behavioral organization, as proposed by ethologists. After a description of the ... 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 (5)
    Save to Project icon | Request Permissions | 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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  • Determining the collision-free joint space graph for two cooperating robot manipulators

    Publication Year: 1993 , Page(s): 285 - 294
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | 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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  • Recognition of partially occluded objects

    Publication Year: 1993 , Page(s): 228 - 236
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | 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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  • Fault diagnosis with continuous system models

    Publication Year: 1993 , Page(s): 55 - 64
    Cited by:  Papers (1)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (848 KB)  

    A unified diagnostic reasoning model that deals with both continuous as well as discrete causal relationships is presented. The diagnostic model significantly extends the formal probabilistic diagnostic reasoning models of other works. Statistical theories are used to formally derive conditional causation probabilities based on continuous system models. The derived conditional causation probabilit... 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 (3)
    Save to Project icon | Request Permissions | 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 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 (10)  |  Patents (2)
    Save to Project icon | Request Permissions | 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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  • Real-time collision avoidance in teleoperated whole-sensitive robot arm manipulators

    Publication Year: 1993 , Page(s): 194 - 203
    Cited by:  Papers (59)  |  Patents (1)
    Save to Project icon | Request Permissions | 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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  • Optimization of detection networks. II. Tree structures

    Publication Year: 1993 , Page(s): 211 - 221
    Cited by:  Papers (34)
    Save to Project icon | Request Permissions | 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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  • Dynamic system identification using neural networks

    Publication Year: 1993 , Page(s): 204 - 211
    Cited by:  Papers (18)
    Save to Project icon | Request Permissions | 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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  • Transformations between delta and forward shift operator transfer function models

    Publication Year: 1993 , Page(s): 295 - 296
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | 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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  • Robust contingency plans for transportation investment planning

    Publication Year: 1993 , Page(s): 5 - 13
    Save to Project icon | Request Permissions | 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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  • Determining optimally ordered pairs using edge-coloring of graphs

    Publication Year: 1993 , Page(s): 237 - 239
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | 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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  • Stealth terrain navigation

    Publication Year: 1993 , Page(s): 96 - 110
    Cited by:  Papers (15)  |  Patents (1)
    Save to Project icon | Request Permissions | 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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  • Abstracting event-based control models for high autonomy systems

    Publication Year: 1993 , Page(s): 42 - 54
    Cited by:  Papers (9)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1120 KB)  

    A high autonomy system needs many models on which to base control, management, design, and other interventions. These models differ in level of abstraction and in formalism. Concepts and tools are needed to organize the models into a coherent whole. The abstraction processes for systematic derivation of related models for use in event-based control are discussed here. The multifaceted modeling met... View full abstract»

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  • Simulation of an adaptive behavior mechanism in an expert decision-maker

    Publication Year: 1993 , Page(s): 65 - 76
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1180 KB)  

    A control theoretic model of adaptive decision-making is presented, and its application to the simulation of expert decision-makers is discussed. A cognitive work-load control model is introduced and its impact on decision-making behavior examined. Applications of the adaptive decision-making model have included analysis of command and control (C2) organizations and simulation of the cr... View full abstract»

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  • Image transformation approach to nonlinear shape restoration

    Publication Year: 1993 , Page(s): 155 - 172
    Cited by:  Papers (15)  |  Patents (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1228 KB)  

    Nonlinear shape distortions are considered as uncertainty in computer vision, robot vision, and pattern recognition. A new approach to nonlinear shape restoration based on nonlinear image shape transformation is proposed. The principal idea of this method is that two-dimensional (2-D) transformation is used to approximate a three-dimensional (3-D) problem. Five particular image transformation mode... 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 (5)
    Save to Project icon | Request Permissions | 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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  • Counting the number of classes in a fuzzy set

    Publication Year: 1993 , Page(s): 257 - 264
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | 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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  • A model for a rider-motorcycle system using fuzzy control

    Publication Year: 1993 , Page(s): 267 - 276
    Cited by:  Papers (4)  |  Patents (10)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (696 KB)  

    A rider-motorcycle system is a representative man-machine system in view of the major role that the rider plays in determining the performance of the integrated system. The handling property of motorcycles influences safety during riding. In the study, a motorcycle model subjected to fuzzy control representing rider's perception and action is investigated to facilitate motorcycle design. A mathema... View full abstract»

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  • Extending error recovery capability in manufacturing by machine reasoning

    Publication Year: 1993 , Page(s): 221 - 228
    Save to Project icon | Request Permissions | 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 (2)
    Save to Project icon | Request Permissions | 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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  • Epistemic utility estimation

    Publication Year: 1993 , Page(s): 129 - 140
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (936 KB)  

    An epistemological model of rational decision-making, developed by Issac Levi, is applied to the estimation problem. The estimators thus developed are optimal with respect to an epistemic utility function that accounts for the cost of error, the decision agent's assessment of informational value and the decision agent's specified willingness to risk errors in exchange for information acquisition; ... 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 (7)
    Save to Project icon | Request Permissions | 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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