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System identification with reaction-mass devices

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Abstract

Reaction-mass devices are to be used in a dual role: first for the purpose of system identification, and second for the purpose of vibration suppression. Unlike ground-based shakers, reaction-mass devices have a position constraint which must be maintained. A two-part system identification procedure is described which maintains this constraint. In the first part, a new algorithm is used to obtain the impulse response from input-output data. The second part uses the eigensystem realization algorithm to determine linear matrix models of the structure and of the reaction-mass device. This procedure is demonstrated on a small experimental structure. The usefulness of the model for the design of a vibration suppression controller is also demonstrated.

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Authors and Affiliations

  1. Frank J. Seiler Laboratory, U.S. Air Force Academy, 2354 Vandenberg Drive, Suite 6H79, 80840, CO

    Ralph Quan (SEM Member) is NRC Fellow)

Authors
  1. Ralph Quan
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Quan, R. System identification with reaction-mass devices. Experimental Mechanics 35, 42–48 (1995). https://doi.org/10.1007/BF02325833

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  • DOI: https://doi.org/10.1007/BF02325833

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