Active Vibration Suppression Control Algorithm in Gyroscopic System
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.
Liangchi Zhang, Chunliang Zhang and Tielin Shi
Z. H. Zhang and S. A.Q. Siddiqui, "Active Vibration Suppression Control Algorithm in Gyroscopic System", Advanced Materials Research, Vols. 139-141, pp. 2490-2493, 2010