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Proceedings of 8th IEEE International Symposium on Intelligent Control

25-27 Aug. 1993

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Displaying Results 1 - 25 of 108
  • Applying a heuristic cooperation framework to expert control

    Publication Year: 1993, Page(s):617 - 620
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    An application essentially based on some heuristics in communication processes among expert systems is outlined. With these heuristics, certainty coefficients associated with communicated information are re-evaluated. A difficult problem of process control is discussed. The performance of one "good" model is assessed using computer simulations.<> View full abstract»

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  • Raw manufacturing data storage for hierarchical control

    Publication Year: 1993, Page(s):70 - 74
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (470 KB)

    The collection of the information resulting from the activity of the physical system of manufacturing workshops must facilitate real-time workshop control, but also permit the use of line statistical historics for longer term decision making. A data structure is suggested which can satisfy these two objectives when used on a great variety of production systems. The approach is based on events and ... View full abstract»

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  • Tuning of scheduling parameters for workshop intelligent reactivity

    Publication Year: 1993, Page(s):19 - 23
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    Most of the available industrial schedulers are based on a simulation approach using dispatching rules. These rules are often dedicated to the satisfaction of a single performance criterion, and are used whatever the characteristics of the set of jobs are. An approach which allows compromises between rules is presented. These compromises can be parametered in accordance with the objectives of the ... View full abstract»

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  • Neural network support for simultaneous optimization of torque and deviation in robot path planning

    Publication Year: 1993, Page(s):244 - 249
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (565 KB)

    A novel architecture of the robot's trajectory planner is proposed. It uses both a conventional trajectory generation algorithm based on underdetermined splines optimized with respect to some quadratic criteria together with a neural network module capable of coping with a nonlinear multi-objective design problem. The backpropagation network structure is chosen. The network has learned the positio... View full abstract»

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  • Nonlinear dynamic feedback technique for motion control in holonomic robotic systems

    Publication Year: 1993, Page(s):24 - 29
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    A nonlinear dynamic feedback design technique for globally optimal motion control in a class of holonomic systems (e.g., robot manipulators and closed-link robotic mechanisms) is developed. The proposed technique provides asymptotically stable convergence to a desired equilibrium state defined as a (task) function of the Cartesian (e.g., end-effector) coordinates, as well as marginally stable trac... View full abstract»

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  • Proceedings of 8th IEEE International Symposium on Intelligent Control

    Publication Year: 1993
    Request permission for commercial reuse | PDF file iconPDF (243 KB)
    Freely Available from IEEE
  • Modular composition of intelligent control policies for FMS models

    Publication Year: 1993, Page(s):405 - 410
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    The scheduling problem in flexible manufacturing systems (FMSs) is addressed. A rule-based scheduling system with the following main characteristics: it uses an opportunistic and/or hierarchical schema; it has four operative levels there exist some rules to choose the most suitable level; and the information needed by the scheduling system is obtained during FMS model stage. The authors' approach ... View full abstract»

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  • Nested wavelet controller

    Publication Year: 1993, Page(s):411 - 416
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    A new design procedure for feedback control architecture is introduced. The goal is to develop a system that will exploit the opportunities given by modern computational advances and create a structure that will eventually embrace intelligence features. Nested feedback loops are derived from the multiresolutional representation of control variables and hierarchical prediction of the next sample er... View full abstract»

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  • BARNET - A new approach to behavior arbitration

    Publication Year: 1993, Page(s):417 - 422
    Cited by:  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    A new mechanism, termed Behavior Arbitration Network (BARNET) is presented. BARNET is a dynamic adaptive network which is used for arbitration among behaviors and for combining reflexive behaviors and reasoning-driven behaviors in high-functionality intelligent autonomous systems (IASs). BARNET is structured as a networked team of stochastic learning automata, operating in multiple stochastic nons... View full abstract»

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  • An entropy-based reliability assessment technique for intelligent machines

    Publication Year: 1993, Page(s):423 - 428
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    A new method for measuring the performance of intelligent robot systems is presented. The method utilizes entropy, a concept borrowed from informaton theory, to provide a unified technique for measuring the performance of various combinations of control and sensing algorithms available in an intelligent machine in response to a given task specification. It can be shown that the entropy of a system... View full abstract»

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  • Intelligent process control with integrated robust multivariable controllers and real-time supervisory knowledge-based systems

    Publication Year: 1993, Page(s):515 - 520
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    The application of a supervisory knowledge-based system (KBS) to provide robust multivariable control of a chemical reaction process with reduced conservatism is examined. The supervisory KBS is capable of monitoring the process to detect process and control system faults or deteriorating control system performance due to changes in the process behavior or operating conditions. If a fault or chang... View full abstract»

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  • Architectures for intelligent control systems: The science of autonomous intelligence

    Publication Year: 1993, Page(s):42 - 48
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    This new area of engineering (AICS), endeavor, architectures for intelligent control systems, has generated a number of often controversial results and directions. It is rooted in control theory, artificial intelligence, computer architectures, software engineering as well as in psychology, biology, linguistics, and other disciplines. A question arises: is this a science, or just an intersection o... View full abstract»

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  • Game theory as a unifying structure for a variety of robot tasks

    Publication Year: 1993, Page(s):429 - 434
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (684 KB)

    The use of game theory as a general formalism for representing, comparing, and providing insight into solutions to a wide class of robotics problems is proposed. It is shown how game theory can be applied to problems of multiple robot coordination, high-level strategy planning, information gathering through manipulation and/or sensor planning, and pursuit-evasion scenarios. A very general game str... View full abstract»

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  • Generic online knowledge based system for process plants. II. Architecture and function

    Publication Year: 1993, Page(s):521 - 523
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    The knowledge base system (KBS) development effort described represents an attempt to expand the intelligence content of applications, i.e., expansion of the knowledge content of real-time online process applications, expression of knowledge in a generic way to maximize code reusability, structuring of KBS elements to facilitate application development. The results of the author's effort to develo... View full abstract»

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  • Task decomposition

    Publication Year: 1993, Page(s):49 - 51
    Cited by:  Papers (3)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    A hierarchical reference model architecture for real-time intelligent control is defined. At each level, generic task decomposition modules accept commands and use stored task knowledge to decompose the commands into subcommands to be sent to subordinate task decomposition modules. Both spatial and temporal task decomposition are addressed View full abstract»

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  • A submarine maneuvering system demonstration based on the NIST real-time control system reference model

    Publication Year: 1993, Page(s):376 - 381
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    The Robot Systems Division (RSD) at the National Institute of Standards and Technology (NIST) has developed a generic reference model architecture, known as the Real-time Control System (RCS). The application of RCS to the automation of submarine operations is demonstrated which requires that an enormous amount of intelligence be built into its control system. A summary of the reference model is g... View full abstract»

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  • Generalized stochastic state space neural adaptive control

    Publication Year: 1993, Page(s):133 - 138
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB)

    A generalized stochastic neural adaptive control algorithm is presented, where the system identification is based on the state space innovations model and a neural network architecture. This identification algorithm is derived from three different optimization approaches, i.e., the gradient, Newton, and minimum variance. The control law, also based on neural networks structure, is derived from a q... View full abstract»

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  • A differential game-theoretic approach to sliding mode control

    Publication Year: 1993, Page(s):435 - 438
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    The concepts of sliding mode control and game theory are combined to bring a new approach to the design of sliding controllers. In particular, the problem of tracking with imprecise system models is examined. A game-theoretic interpretation of the problem is presented View full abstract»

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  • A generic framework for online knowledge-based diagnostic systems in batch chemical processes

    Publication Year: 1993, Page(s):524 - 529
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (540 KB)

    A generic framework for a knowledge-based operator advisory system which defines the knowledge, knowledge organization and problem solving strategy for discrete-with-sufficient-time operations is presented. The operator advisory system architecture is based on the procedural decomposition achieved through a “phase-step model” of discrete processes. Operator advisories are generated for... View full abstract»

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  • Development of a fusion algorithm for uncertain and imprecise information

    Publication Year: 1993, Page(s):605 - 610
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    Distributed decision at a central processing site requires combining local decisions and evidence collected from distributed and heterogeneous information sources. A global decision maker at the fusion center is responsible for transforming the collected evidence into a common knowledge framework so that the converted information can be combined in order to deduce a concise and collective inferenc... View full abstract»

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  • Integrated flight/propulsion control system design via neural network

    Publication Year: 1993, Page(s):116 - 121
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    Neural network design methodology is utilized to design an integrated airframe/engine control system for a modern, statically unstable, fighter aircraft in landing. The resulting neural controller structure consists of a feedback compensator and a feedforward filter formulated in the form of a three-layer feedforward network whose parameters are trained by a static backpropagation method. The numb... View full abstract»

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  • Dual-mode dynamics neural network for non-attacking N-Queen problem

    Publication Year: 1993, Page(s):588 - 593
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    A new approach for solving combinatorial optimization problems is presented, based on a novel dynamic neural network featuring a dual-mode of network dynamics, the state dynamics and the weight dynamics. The major difficulties in the neural network approaches for optimization problems are: (1) the objective function for a given problem should have a form that can be mapped onto the network; and (2... View full abstract»

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  • Extracting discrete event system models from hybrid control systems

    Publication Year: 1993, Page(s):298 - 301
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    The state space partitioning in the interface of the hybrid control system is modeled using covering half spaces. This formulation extends a previously introduced model. The covering half spaces are used to define a set of plant events, and a discrete event system model is generated which captures the behavior of the plant and interface of the hybrid control system View full abstract»

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  • Automatic verification of principal contacts using vision

    Publication Year: 1993, Page(s):314 - 319
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    Automatic recognition of unknown contacts among objects provides high-level feedback for a reactive robot system. The recognition mechanism must be online and insensitive to sensing uncertainties. A method is introduced of online using vision to extract more accurate contact information by reducing a set of initial contact hypotheses which are obtained from position/orientation sensing and subject... View full abstract»

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  • Expert autotuner for multiloop SISO controllers

    Publication Year: 1993, Page(s):7 - 12
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    A novel expert autotuner for multivariable control applications is proposed. The main idea of the autotuning control methodology is to apply the SISO (single-input-single-output) PID controllers in the MIMO (multi-input-multi-output) environment with appropriate tuning based on the pattern recognition technique. An expert tuning processor is designed to supervise the proportional, integral, deriva... View full abstract»

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