An energy approach for the active vibration control of an oscillator with two translational degrees of freedom using two auxiliary rotating masses

13th International Conference on Motion and Vibration Control; 12th International Conference on Recent Advances in Structural Dynamics

Baumer, Richard^1 ; Terrill, Richard^1 ; Starossek, Uwe^1

Structural Analysis and Steel Structures Institute, Hamburg University of Technology, Hamburg

21073, Germany^1

关键词: Active mass damper;    Active vibration controls;    Arbitrary direction;    Centrifugal Forces;    Constant angular velocity;    Mode of operations;    Translational degrees of freedoms;    Translational motions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/744/1/012230/pdf
DOI  :  10.1088/1742-6596/744/1/012230

来源: IOP

【 摘 要 】

An active mass damper implementing two auxiliary masses rotating about a single axis is presented. This device is used for the vibration control of an oscillator performing translational motion in a plane (two translational degrees of freedom). In a preferred mode of operation, both auxiliary masses rotate with the same constant angular velocity in opposite directions. The resultant of the produced harmonic centrifugal forces is used for the vibration control. The direction of this control force can be altered by slightly varying the angular velocity of the auxiliary masses. Using an energy approach, a control algorithm was derived. The control algorithm ensures that the control force effectively damps the oscillator when it is displaced in a single, arbitrary direction. Numerical simulations were performed, showing that the presented device with the corresponding control algorithm effectively damps the vibrations on the oscillator.