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IEEE Control Systems

Issue 2 • Date Apr 1998

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Displaying Results 1 - 7 of 7
  • A software environment for gain scheduled controller design

    Publication Year: 1998, Page(s):48 - 60
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1644 KB)

    Theoretical developments have improved the understanding of gain scheduled control and suggested new methods for design, analysis, and implementation of such nonlinear control systems. An integrated software environment for gain scheduled local controller network design and analysis, including computer-aided modeling and system identification, is described. Some background theory is included, and ... View full abstract»

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  • Low velocity friction compensation

    Publication Year: 1998, Page(s):61 - 69
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1048 KB)

    A model-free design methodology is reported for identification and stable adaptive control of a class of systems with state dependent parasitic effects such as friction. The methodology is constructive, incorporates modeling error bound information, and ensures stable and convergent performance. The identifier and control designs are applicable to a class of low-dimensional dynamic systems with th... View full abstract»

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  • H control for suppressing stick-slip in oil well drillstrings

    Publication Year: 1998, Page(s):19 - 30
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1360 KB)

    We show, applying the linear H control design technique, that the suppression of stick-slip oscillations and transient behavior can be largely improved over a PD-like control system currently applied in oil well drilling. Using rough knowledge (e.g. size and induced oscillation frequency) of the friction disturbance, the appropriate choice of dynamic weighting functions can make ... View full abstract»

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  • Experimental results in robust lateral control of highway vehicles

    Publication Year: 1998, Page(s):70 - 76
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (708 KB)

    Vehicle lateral dynamics are affected by vehicle mass, longitudinal velocity, vehicle inertia, and the cornering stiffness of the tires. All of these parameters are subject to variation, even over the course of a single trip. Therefore, a practical lateral control system must guarantee stability, and hopefully ride comfort, over a wide range of parameter changes. This article describes a robust co... View full abstract»

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  • Distributed intelligent control for a mine refrigeration system

    Publication Year: 1998, Page(s):31 - 38
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1016 KB)

    One way to construct intelligent controllers is to use an agent-centered approach in which the agents themselves determine the global structure of the controller and the inter-agent cooperation methods. To assess this approach, the design and testing of a distributed intelligent controller for a laboratory-scale mine refrigeration plant is discussed. Underlying theoretical concepts are briefly rev... View full abstract»

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  • Control experiments and what I learned from them: a personal journey

    Publication Year: 1998, Page(s):81 - 88
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1764 KB)

    This article is a personal account of my experiences in developing control experiments for the purpose of control research. The article does not address the important questions surrounding the development of control experiments for undergraduate education. Rather, the emphasis is on research, specifically, the role that control experiments can play in motivating new theoretical ideas. To stimulate... View full abstract»

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  • Experimental evaluation of nonlinear adaptive controllers

    Publication Year: 1998, Page(s):39 - 47
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (948 KB)

    Attractive methods for learning the dynamics and improving the control of robot manipulators during movements have been proposed for more than 10 years, but they still await applications. This article investigates practical issues for the implementation of these methods, Two nonlinear adaptive controllers, selected for their simplicity and efficiency, are tested on 2-DOF and 3-DOF manipulators. Th... 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