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    A unified approach to stabilize an arbitrary order discrete or continuous time transfer function with time delay using a pi controller

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    Conference paper (218.9Kb)
    Date
    2007-04-27
    Author
    Lee, Taegyu
    Watkins, John Michael
    Metadata
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    Citation
    Lee , Taegyu & Watkins, John M. (2007). A unified approach to stabilize an arbitrary order discrete or continuous time transfer function with time delay using a pi controller. In Proceedings : 3rd Annual Symposium : Graduate Research and Scholarly Projects. Wichita, KS : Wichita State University, p.193-194
    Abstract
    The object in this paper is to find the stability regions of an arbitrary order discrete or continuous time transfer function with time delay. The stability bounds of the proportional integral (PI) controller are found in terms of the proportional ( Kp ) and integral gain ( Ki ). The delta operator is used to describe the controllers because it provides not only numerical properties superior to the discrete time shift operator, but also converges to the continuous time derivative operator as the sampling period approaches a zero. The advantage of this method is that designers can find the stability boundaries when only the frequency response and not the parameters of the plant transfer function are known. A unified approach allows us to use the same procedure for finding the discrete time and continuous time stability regions. If the plant transfer function is known, the stability regions can be found analytically. Regions where phase and gain margin specifications are met can also be found.
    Description
    Paper presented to the 3rd Annual Symposium on Graduate Research and Scholarly Projects (GRASP) held at the Hughes Metropolitan Complex, Wichita State University, April 27, 2007.

    Research completed at the Department of Electrical and Computer Engineering, College of Engineering
    URI
    http://hdl.handle.net/10057/907
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    • EECS Graduate Student Conference Papers
    • Proceedings 2007: 3rd Annual Symposium: Graduate Research and Scholarly Projects

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