Digital control algorithms for microgravity isolation systems

Alok Sinha, Y. P. Wang

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    New digital control algorithms have been developed to achieve the desired transmissibility function for a microgravity isolation system. Two approaches have been presented for the controller design in the context of a single degree of freedom system for which an attractive electromagnet is used as the actuator. The relative displacement and the absolute acceleration of the mass have been used as feedback signals. The results from numerical studies are presented. It has been found that the resulting transmissibility is quite close to the desired function. Also, the maximum coil currents required by new algorithms are smaller than the maximum current demanded by the previously proposed lead/lag method.

    Original languageEnglish (US)
    Pages (from-to)256-263
    Number of pages8
    JournalJournal of Vibration and Acoustics, Transactions of the ASME
    Volume115
    Issue number3
    DOIs
    StatePublished - Jan 1 1993

    Fingerprint

    Microgravity
    microgravity
    isolation
    Electromagnets
    electromagnets
    controllers
    coils
    time lag
    Actuators
    degrees of freedom
    Lead
    actuators
    Feedback
    Controllers

    All Science Journal Classification (ASJC) codes

    • Acoustics and Ultrasonics
    • Mechanics of Materials
    • Mechanical Engineering

    Cite this

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    abstract = "New digital control algorithms have been developed to achieve the desired transmissibility function for a microgravity isolation system. Two approaches have been presented for the controller design in the context of a single degree of freedom system for which an attractive electromagnet is used as the actuator. The relative displacement and the absolute acceleration of the mass have been used as feedback signals. The results from numerical studies are presented. It has been found that the resulting transmissibility is quite close to the desired function. Also, the maximum coil currents required by new algorithms are smaller than the maximum current demanded by the previously proposed lead/lag method.",
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    Digital control algorithms for microgravity isolation systems. / Sinha, Alok; Wang, Y. P.

    In: Journal of Vibration and Acoustics, Transactions of the ASME, Vol. 115, No. 3, 01.01.1993, p. 256-263.

    Research output: Contribution to journalArticle

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