Proceedings. 5th IEEE International Symposium on Intelligent Control 1990

5-7 Sept. 1990

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Displaying Results 1 - 25 of 194
  • The role of rhythm in nervous processing

    Publication Year: 1990
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (103 KB)

    Summary form only given. Throughout the history of neuroscience, interneuron communication has usually been considered under the simplifying assumption of frequency-modulated (FM) encoding. In newer artificial neural networks, this same view has justified the abstraction of real neural pulse trains into hypothesized neuron activation levels: continuously varying scalars representing the short-term... View full abstract»

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  • Proceedings. 5th IEEE International Symposium on Intelligent Control 1990 (Cat. No.90TH0333-5)

    Publication Year: 1990
    Request permission for commercial reuse | PDF file iconPDF (378 KB)
    Freely Available from IEEE
  • Adaptive tracking for a mobile robot

    Publication Year: 1990, Page(s):1044 - 1049 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (672 KB)

    A novel technique for adaptive tracking in indoor lighting environments based on Chebyshev's theorem is presented. The technique is used to recover the region corresponding to an artificial landmark accurately and efficiently through a sequence of images. Accurate region segmentation is the first step in determining the position of a mobile robot relative to a landmark. Nonadaptive region tracking... View full abstract»

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  • Mobile robot self-localization from range data using view-invariant regions

    Publication Year: 1990, Page(s):1038 - 1043 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    The problem of mobile robot self-localization given a polygonal map and a set of range readings from a ring of sonar sensors is addressed. It is assumed that straight-line edge segments can be extracted from the contour defined by the sensed range data. Previous approaches used a tree search complemented by a number of good pruning heuristics to match observations to map edges. The approach here i... View full abstract»

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  • Path planning algorithms for mobile robots

    Publication Year: 1990, Page(s):1032 - 1036 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Suboptimal algorithms for path planning in real time are described. The proposed system uses inexpensive general-purpose microprocessors for image processing and for guidance and control to determine a suboptimal path between two nodes and to recalculate the path in the event of path blockage by an obstacle. In addition, it has obstacle avoidance capabilities if there is enough clearance to allow ... View full abstract»

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  • Hierarchical design of integrated control for hypersonic vehicles

    Publication Year: 1990, Page(s):904 - 909 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    A hierarchical design methodology for decentralized integrated control of a hypersonic vehicle is described. A hierarchical design methodology is developed for an integrated model comprising many subsystems. The design objective for the higher level of augmentation is to compensate for subsystems' interactions by making the subsystems as weakly coupled as possible through this level of augmentatio... View full abstract»

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  • Perceptual integration of piloting and navigation

    Publication Year: 1990, Page(s):1026 - 1031 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    The crucial issues of modularization and communication using the idea of perception as an integration and communication mechanism for robotic systems are addressed. A paradigm for integrating robotic systems by focusing attention on perception is described. The main problem with heavily modularized systems with distributed knowledge is intermodular communication, which requires translation between... View full abstract»

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  • Fuzzy logic-based flexible wing aircraft roll and structural torsion moment control

    Publication Year: 1990, Page(s):897 - 902 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    A fuzzy-logic-based, multi-input/output roll controller that has been designed for Rockwell International's Advanced Technology Wing (ATW) aircraft to control roll rate and torsion loads is described. The ATW integrates active controls with a flexible wing structure to provide wing shapes that optimize particular flight performance criteria. Because of the large variations in the dynamic model of ... View full abstract»

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  • CAD/simulation for dynamic environments

    Publication Year: 1990, Page(s):1018 - 1025 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    The architecture and working of a flexible multiple mobile robot system (MMRS) are described. The use of a path network to define allowed paths for the mobile robots is proposed. This greatly simplifies the detection of possible collisions between the robots and the problem of replanning the motion. The MMRS is divided into three main components standard pattern, central controller, and individual... View full abstract»

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  • Task decomposition methodology for the design of a coal mining automation hierarchical real-time control system

    Publication Year: 1990, Page(s):884 - 892 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (808 KB)

    A systematic approach to hierarchical task decomposition and planning is described. The application of this task decomposition methodology is illustrated through the design of a coal mining automation hierarchical real-time control system. The mining automation standard reference model adapts the National Institute of Standards and Technology's real-time control system (RCS) architecture to coal m... View full abstract»

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  • Automated error recovery in manufacturing systems through learning and reasoning

    Publication Year: 1990, Page(s):1011 - 1016 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (588 KB)

    Error recovery in manufacturing systems, is addressed and an error recovery approach based on the integration of explanation-based and analogy-based learning is proposed. The knowledge representation for the proposed learning technique is based on the object-oriented modeling concept. A new concept, called perspective, is defined to capture the causal relationship between two objects in analogy-ba... View full abstract»

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  • Control system architecture for a remotely operated unmanned land vehicle

    Publication Year: 1990, Page(s):876 - 883 vol.2
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    Techbase Enhancements for Autonomous Machines (TEAM) is a joint effort among several US Army organizations, national laboratories, and commercial contractors to develop a vehicle control system that can support a mix of capabilities ranging from master-slave teleoperation to autonomous control. The overall TEAM control system architecture and the design of the mobility and communication functions ... View full abstract»

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  • On-line measurement of relative stability in feedback control systems

    Publication Year: 1990, Page(s):761 - 765 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    An online relative stability measurement technique based on measuring the size of appropriate closed-loop transfers functions at a series of frequencies is proposed. The idea is to excite the system with pure sinusoids until a resonance is measured. The resonance measures give information about relative stability in terms of the tolerable unstructured uncertainty. An algorithm to reduce and in som... View full abstract»

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  • Modeling and performance analysis of a resource-sharing manufacturing system using stochastic Petri nets

    Publication Year: 1990, Page(s):1005 - 1010 vol.2
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    The objectives of this work are to model a manufacturing system using top-down Petri net modeling approaches and mutual exclusion concepts; to construct stochastic Petri nets by considering the random failures of the machines, as well as such resources as robots and automated guided vehicle systems, and by incorporating temporal variables to transitions and places; to derive the performance of the... View full abstract»

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  • A theory of intelligent systems

    Publication Year: 1990, Page(s):866 - 875 vol.2
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (900 KB)

    The author proposes a theoretical model consisting of seven basic elements: actuators, sensors, sensory processing, world modeling, task decomposition, value judgment, and global memory/communications. These elements are integrated into a hierarchical system architecture wherein (a) control bandwidth decreases about an order of magnitude at each higher level, (b) perceptual resolution of spatial a... View full abstract»

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  • On passivity and simple adaptive control of nonlinear manipulators

    Publication Year: 1990, Page(s):754 - 757 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    Extension of passivity to a class of nonlinear systems linear in control and its application to robust adaptive control of robots are considered. Passivity, also called positive realness in linear time-invariant systems, is needed for realizability of networks, optimality of control systems, and stability of nonlinear or adaptive controllers. It is shown that stabilizability and parallel feedforwa... View full abstract»

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  • A real-time Petri nets simulator for automated manufacturing systems

    Publication Year: 1990, Page(s):999 - 1004 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    A real-time Petri nets simulator (RTPNS), including software specifications, interactive algorithm, firing rule, and real-time implementation, is presented. The software provides an intuitive design tool with graphical orientation and convenient debugging capability for the modeling and control of automated manufacturing systems. The complex interactions among control, communication, and database ... View full abstract»

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  • Searching in a multidimensional space

    Publication Year: 1990, Page(s):700 - 705 vol.2
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    The generalization of a multiple-rule A* algorithm (MRA*), which provides a framework in which many evaluation functions can be combined into a multiresolutional hierarchy, is described. This algorithm was originally applied by the authors to the problem of path planning in two-dimensional space for an autonomous vehicle. The generalization of the rules that guide this algorithm allows it now to b... View full abstract»

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  • A complete and scalable architecture for 3D model-based vision

    Publication Year: 1990, Page(s):212 - 219 vol.1
    Cited by:  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (928 KB)

    As a follow-up to the work of R.M. Bolle et al. (Proc. DARPA Image Understanding Workshop, May 1989, p.477-8), an overview is given of subsequent work. The focus of the ongoing work is the development of an experimental vision system for recognition of 3D objects. The thrust of this vision system is to investigate techniques that may lead to a system that scales with the size of the problem (by th... View full abstract»

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  • Robotics in intelligent manufacturing: IMPAQT activities

    Publication Year: 1990, Page(s):1205 - 1210 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    The Center for Intelligent Manufacturing, Processing, and Quality Technologies (IMPAQT) at Drexel University was established to integrate education, research, and technology transfer in technical and business fields which are associated with intelligent manufacturing and processing. A report on some of the Center's ongoing robotics activities is presented. Projects described are: (1) interpretatio... View full abstract»

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  • Coactive aesthetics and control theory

    Publication Year: 1990, Page(s):93 - 97 vol.1
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    Coactive art forms bring together aspects of control theory and issues in human perception and cognitive modeling. Coactive systems depend on an interaction with the viewer to create their aesthetic value. The aesthetics in these art forms, therefore, is not embodied solely in some physical object but also in how the observer experiences the object. Coactive systems are interactive art forms which... View full abstract»

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  • A knowledge allocation method for cellular robotic system which is one of the distributed intelligent system

    Publication Year: 1990, Page(s):129 - 134 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    A knowledge allocation method for distributed intelligent system system is proposed and applied the method to the cellular robotic system CEBOT distributed systems. A new matrix notation is proposed to express the communication link and states of the knowledge allocation, knowledge based structure matrix. A notation for describing a given task is also proposed. The efficiency of the method, which ... View full abstract»

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  • Estimation of dynamic system parameters by neural networks

    Publication Year: 1990, Page(s):541 - 545 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    Identification of dynamic systems, operating under correlated noise, is conventionally performed by the generalized least squares algorithm. The Hopfield neural network has been used in connection with the generalized least squares technique to identify the system parameters. A theoretical comparison is made between the conventional generalized least squares and the neural-network-based generalize... View full abstract»

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  • Real-time expert systems for diagnostics and closed-loop control

    Publication Year: 1990, Page(s):1088 - 1094 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    The architecturally relevant issues which arise in the development of both plant transgression-based and plant parameter-based fault-diagnostic and reconfigurable closed-loop control systems are discussed. Moreover, the technical issues of acquiring such process knowledge and using it effectively are addressed. A direct comparison is drawn between the performance of fault-detection and closed-loop... View full abstract»

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  • Intelligent system for air-traffic control

    Publication Year: 1990, Page(s):859 - 863 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    A new approach to using distributed intelligent system techniques for air-traffic control facilities maintenance is developed, and the intelligent maintenance support system (IMSS) architecture is proposed. The primary objective is to use an interdisciplinary approach to identifying the opportunity for applying existing and emerging technologies to facilitate automation of maintenance support oper... View full abstract»

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