Calculation of vibratory power transmission for use in active vibration control

Abstract

Typical active vibration isolation experiments use point measurements of acceleration or force at the junction between the vibratory source and the receiving structure. This does not necessarily lead to the minimization of the transmitted vibrational energy. A simple method is described to generate a signal which is proportional to the harmonic vibratory power transmission at the driving frequency, which is suitable for use as an error signal with an existing filtered-x feedforward active vibration controller.