Estimation of forces generated by a machine mounted upon isolators under operating conditions

Vibration isolation is important in rotating machines where the undesirable effects of vibratory forces need to be isolated from foundations. This wor k presents an application of the Kalman filter with a recursive estimator f or determining the vibratory forces. The estimator employs a least-squares algorithm to compute the magnitudes of the forces from the measured dynamic responses. The feasibility and accuracy of the present method are demonstr ated by numerical experiments to estimate the vibratory forces of a rotatin g machine mounted upon isolators under operating conditions. The estimation results reveal that the proposed method accurately predicts the vibratory forces. The technique could be applied to practical forces estimation (C) 1 999 The Franklin Institute. Published by Elsevier Science Ltd. All rights r eserved.