Novel adaptive repetitive algorithm for active vibration control of a variable-speed rotor

Kari Tammi, Jari Hätönen, Steve Daley

    Research output: Contribution to conferenceConference articleScientificpeer-review

    Abstract

    The paper describes experimental work that demonstrates the use of repetitive control to attenuate radial vibrations of a variable speed-rotor. The experiments were performed on a rotor test rig having a 3-kg rotor supported by journal bearings. The first bending resonance of the rotor shaft (i.e. the critical speed) was approximately 50 Hz. The objective was to control the radial response at the rotor midpoint by using an actuator located outside the bearing span. A novel aspect of the controller design is that the length of the control output vector of the repetitive controller was updated as a function of the speed of rotation. The speed of rotation determined the required delay time and the repetitive filter length that approximately matches with the delay time. The results obtained were comparable to those achieved in earlier studies with feedforward compensation methods. The best results were achieved when the frequency of rotation enables an integer ratio between disturbance period and sample rate.
    Original languageEnglish
    Publication statusPublished - 2006
    MoE publication typeNot Eligible
    Event8th International Conference on Motion and Vibration Control, MOVIC 2006 - Daejeon, Korea, Republic of
    Duration: 28 Aug 200630 Aug 2006
    Conference number: 8

    Conference

    Conference8th International Conference on Motion and Vibration Control, MOVIC 2006
    Abbreviated titleMOVIC 2006
    CountryKorea, Republic of
    CityDaejeon
    Period28/08/0630/08/06

    Keywords

    • rotors
    • vibration
    • active vibration control
    • repetitive control
    • learning control

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  • Cite this

    Tammi, K., Hätönen, J., & Daley, S. (2006). Novel adaptive repetitive algorithm for active vibration control of a variable-speed rotor. Paper presented at 8th International Conference on Motion and Vibration Control, MOVIC 2006, Daejeon, Korea, Republic of.