Active Vibration Suppression Control Algorithm in Gyroscopic System

Article Preview

Abstract:

A new control method for suppressing vibration in a rotating beam system of a helicopter has been presented. The method used a non-linear dynamics equation to compute actual natural frequencies using FFT, not based on nominal natural frequencies of linear dynamics. A design based on linear coupling may not take account of the effect of non-linear coupling in the system, so a conceptual controller design has also been presented, and a detailed control algorithm has been developed. In fact, this is a non-linear dynamics optimization problem. In a gyroscopic system, tuning of the flywheel allows a commensurable relationship to be established between the natural frequencies of the system, resulting in a strong coupling between the vibrating modes. Having established a strong coupling within the system, damping was introduced in the flywheel via an actuator, resulting in rapid vibration suppression. Numerical simulation demonstrated the efficiency of the modification.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 139-141)

Pages:

2490-2493

Citation:

Online since:

October 2010

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2010 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] M. F. Golnaraghi: Vibration suppression of flexible structures using internal resonance, in Mechanics Research Communications Journal, vol. 18, no. 2/3(1991), pp.135-143.

DOI: 10.1016/0093-6413(91)90042-u

Google Scholar

[2] M. F. Golnaraghi: Regulation of flexible structures via nonlinear coupling, in Journal of Dynamics and Control, vol. 1, no. 4, (1991), pp.405-428.

DOI: 10.1007/bf02169768

Google Scholar

[3] K.L. Tuer, A.P. Duquette, and M.F. Golnaraghi: Vibration control of a flexible beam using a rotational internal resonance controller, part 1: theoretical development and analysis, in Journal of Sound and Vibration, vol. 167, no. 1, (1993).

DOI: 10.1006/jsvi.1993.1320

Google Scholar

[4] A.P. Duquette, K.L. Tuer, and M.F. Golnaraghi: Vibration control of a flexible beam using a rotational internal resonance controller, part 1: theoretical development and analysis, in Journal of Sound and Vibration, vol. 167, no. 1, (1993).

DOI: 10.1006/jsvi.1993.1320

Google Scholar

[5] A. Q. Siddiqui and M. F. Golnaraghi: Vibration suppression in a flexible gyroscopic system using modal coupling strategies, in Journal of Mathematical Problems in Engineering, vol. 2, no. 2, (1996), pp.107-129.

DOI: 10.1155/s1024123x96000269

Google Scholar