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IEEE Control Systems

Issue 2 • Date April 1997

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Displaying Results 1 - 7 of 7
  • Execution of saccades for active vision using a neurocontroller

    Publication Year: 1997, Page(s):18 - 29
    Cited by:  Papers (8)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1977 KB)

    An important mechanism in active vision is that of fixating to different targets of interest in a scene. We present a two-stage design of a neurocontroller for the execution of saccades. The first stage is an "open loop" mode based on a learned spatial representation while the second stage is a closed-loop "visual servoing" mode. Explicit calibration of the kinematic and imaging parameters of the ... View full abstract»

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  • Neurofuzzy model-based weld fusion state estimation

    Publication Year: 1997, Page(s):30 - 42
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1418 KB)

    Proper fusion is crucial in generating a sound weld. Successful control of the fusion state requires accurate measurements of both the topside and back-side bead widths. A top-side sensor-based system is preferred so that the sensor can be attached to and moved with the torch. Thus, the system must be capable of estimating the back-side bead width with high accuracy. Because skilled human operator... View full abstract»

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  • Fuzzy guidance controller for an autonomous boat

    Publication Year: 1997, Page(s):43 - 51
    Cited by:  Papers (40)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1064 KB)

    A fuzzy guidance controller is developed for waypoint following guidance on a small autonomous boat. The boat is a prototype vehicle developed at the MIT Sea Grant College Program and is designed to perform autonomous oceanographic research. The fuzzy controller is programmed in C and down-loaded to a small onboard computer for execution. Navigation data is found in real-time using a digital compa... View full abstract»

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  • Cell mapping for controller design and evaluation

    Publication Year: 1997, Page(s):52 - 65
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1685 KB)

    Cell mapping is a powerful computational technique for analyzing the global behaviour of nonlinear dynamical systems. It simplifies the task of analyzing a continuous phase space by partitioning it into a finite number of disjoint cells and approximating system trajectories as cell transitions. The resulting cell map provides global measures of stability and other performance characteristics that ... View full abstract»

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  • Experimental evolutionary programming-based high-precision control

    Publication Year: 1997, Page(s):66 - 74
    Cited by:  Papers (11)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1161 KB)

    Conventional linear control schemes often fail to provide precise positioning of a control object under the influence of friction, deadzone, saturation, etc. This article proposes a high-precision control scheme for a precise point-to-point positioning system, called an X-Y table, even under the above-noted influences. The proposed scheme is composed of a fuzzy precompensator and a PD controller. ... View full abstract»

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  • A systematic classification of neural-network-based control

    Publication Year: 1997, Page(s):75 - 93
    Cited by:  Papers (82)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2062 KB)

    Successful industrial applications and favorable comparisons with conventional alternatives have motivated the development of a large number of schemes for neural-network-based control. Each scheme is usually composed of several independent functional features, which makes it difficult to identify precisely what is new in the scheme. Help from available overviews is therefore often inadequate, sin... View full abstract»

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  • Developing commercial applications of intelligent control

    Publication Year: 1997, Page(s):94 - 100
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (866 KB)

    Intelligent control techniques that emulate characteristics of biological systems offer opportunities for creating control products with new capabilities. In today's competitive economic environment, these control techniques can provide products with the all-important competitive edge that companies seek. However, while numerous applications of intelligent control have been described in literature... View full abstract»

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As the official means of communication for the IEEE Control Systems Society, the IEEE Control Systems Magazine publishes interesting, useful, and informative material on all aspects of control system technology for the benefit of control educators, practitioners, and researchers.

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Jonathan P. How
jhow@mit.edu