Isolation of a Vibrating Machine Mounted on a Flexible Structure

This paper considers the problem of actively isolating a vibrating machine from a flexible structure. The structural dynamic response is assumed to be known with too little fidelity to permit model-based control design. The discussion is specialized to narrow-band disturbances, and to single-axis mounting. Narrow-band compensation, exploiting knowledge of the disturbance frequency, is proposed. Guaranteed properties of the structural dynamic response are exploited to derive stability and maximum performance criteria for this type of compensation.