By Topic

IEEE Control Systems Magazine

Issue 2 • Date April 1988

Filter Results

Displaying Results 1 - 15 of 15
  • Introduction to neural networks for intelligent control

    Publication Year: 1988, Page(s):3 - 7
    Cited by:  Papers (45)  |  Patents (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    Neural network architecture is presented as one approach to the design and implementation of intelligent control systems. Neural networks can be considered as massively parallel distributed processing systems with the potential for ever-improving performance through dynamical learning. The nomenclature and characteristics of neural networks are outlined. Two simple examples are presented to illust... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Hierarchical neural network model for voluntary movement with application to robotics

    Publication Year: 1988, Page(s):8 - 15
    Cited by:  Papers (182)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (948 KB)

    In order to control voluntary movements, the central nervous system must solve the following three computational problems at different levels: determination of a desired trajectory in the visual coordinates; transformation of the trajectory from visual coordinates to body coordinates; and generation of motor commands. Based on physiological information and previous models, computational theories a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A multilayered neural network controller

    Publication Year: 1988, Page(s):17 - 21
    Cited by:  Papers (406)  |  Patents (38)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (543 KB)

    A multilayered neural network processor is used to control a given plant. Several learning architectures are proposed for training the neural controller to provide the appropriate inputs to the plant so that a desired response is obtained. A modified error-back propagation algorithm, based on propagation of the output error through the plant, is introduced. The properties of the proposed architect... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Neural network architecture for control

    Publication Year: 1988, Page(s):22 - 25
    Cited by:  Papers (47)  |  Patents (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    Two important computational features of neural networks are associative storage and retrieval of knowledge, and uniform rate of convergence of network dynamics independent of network dimension. It is indicated how these properties can be used for adaptive control through the use of neural network computation algorithms, and resulting computational advantages are outlined. The neuromorphic control ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Neural networks for routing communication traffic

    Publication Year: 1988, Page(s):26 - 31
    Cited by:  Papers (88)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (711 KB)

    The use of neural network computational algorithms to determine optimal traffic routing for communication networks is introduced. The routing problem requires choosing multilink paths for node-to-node traffic to minimize loss, which is represented by expected delay or some other function of traffic. The minimization procedure is implemented using a modification of the neural network traveling-sale... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Application of modern control to a continuous anneal line

    Publication Year: 1988, Page(s):32 - 37
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (563 KB)

    A state-variable design approach is developed to control strip temperature in a continuous anneal process producing a variety of high-strength low-alloy steels. In this process, a steel strip passes continuously through five consecutive heat-treating operations to achieve desired metallurgical properties for the automotive industry market. Each operation is controlled by an individual controller d... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Wood chip refiner control

    Publication Year: 1988, Page(s):38 - 43
    Cited by:  Papers (10)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (581 KB)

    The authors treat the control of a chip refiner to produce wood pulp, where the incremental gain between the motor load and the plate gap is subject to sudden changes due to pad collapse. Passive adaptive control with fault detection, active suboptimal dual control, and dual-control solutions are discussed. For dual control, the choice of the control criterion is crucial, as it must reflect the pe... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Considerations in control scheme development for fermentation process control

    Publication Year: 1988, Page(s):44 - 48
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (557 KB)

    It is shown that more effective use of those measurements that are already available can provide an improvement in fermentation process control, which has been commonly viewed as almost insurmountable due to inherent measurement difficulties. Fermentation process problems that are significant in control system design are highlighted. Two industrial examples are given, showing how operation can be ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Application of generalized predictive control to industrial processes

    Publication Year: 1988, Page(s):49 - 55
    Cited by:  Papers (94)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (684 KB)

    A novel algorithm called generalized predictive control (GPC) is shown to be particularly effective for the self-tuning control of industrial processes. The method uses long-range predictive control ideas with a carefully chosen controlled autoregressive and integrated moving average (CARMA) plant model and various horizons that allow for a rich variety of control objectives. The procedure can ada... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Controller tuning for a slow nonlinear process

    Publication Year: 1988, Page(s):56 - 60
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (434 KB)

    Determining the tuning constants of a classical PID (proportional-integral-derivative) controller for a slow nonlinear process, such as the temperature loops on a heat-treat of annealing furnace, can be a laborious task. Several tuning methods were considered to identify a method that could be applied easily in the field with limited resources. The method of Ziegler and Nichols (1942) proved to ea... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Integrated sensor-based intelligent robot system

    Publication Year: 1988, Page(s):61 - 72
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1258 KB)

    A description is given of the work of the European Economic Community ESPRIT 278 project, which is concerned with the development of an integrated sensor-based (tactile plus vision) robot system capable of intelligent action within the area of workpiece positioning and orientation. A vision system is used to provide an initial estimate of workpiece position and orientation, allowing the robot to g... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Reducing residual vibration in systems with uncertain resonances

    Publication Year: 1988, Page(s):73 - 76
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (385 KB)

    Robots that perform rapid motions tend to excite system resonant frequencies. To perform a sequence of tasks more quickly, the settling time required for the vibration to decay should be minimal. Input functions are derived that produce rapid open-loop moves with greatly reduced residual vibration amplitude. To accommodate errors in the assumed system natural frequency, these forcing function are ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multivariable feedwater control design for a steam generator

    Publication Year: 1988, Page(s):77 - 80
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (373 KB)

    A multivariable feedwater control design for drum water-level regulation in a heat-recovery steam generator is presented. The control design is based on a projective output feedback scheme and is used to coordinate the tandem-connected feedwater valves of a low-pressure and a high-pressure drum. One of the design objectives is to minimize the blowdown from the drums during start-ups. Results demon... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Flight control for the F-8 oblique wing research aircraft

    Publication Year: 1988, Page(s):81 - 86
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (626 KB)

    Multivariable flight control laws for the supersonic F-8 oblique wing research aircraft are discussed. The control laws are developed using a loopshaping methodology. The goal is to perform flight tests on a supersonic aircraft with an oblique wing with as much as 65 degrees wing skew. The objective of the control law is to obtain decoupling of the longitudinal and lateral-directional motions of t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Another reason to eschew pole-zero cancellation

    Publication Year: 1988, Page(s):87 - 88
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (195 KB)

    It is shown that, if series compensation by pole-zero cancellation is used in a system that is linear for small signals but has a large signal nonlinearity in the loop, then an observable mode, corresponding to the cancelled pole, appears in the system response when large transient signals occur in the loop. An example in which the nonlinear element is a saturating device is used to illustrate the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

This Magazine ceased publication in 1990. The current retitled publication is IEEE Control Systems.

Full Aims & Scope