Active vibration control of flexible materials found within printing machines

The dynamic characteristics of out-of-plane vibrations of web materials on printing machines are investigated in this study. The solution of the nonlinear equation which describes this motion is computed and compared with the experimental results obtained on a test bed.The proposed controller is based on the travelling wave theory and on the transfer functions identified from the measurement data. Good experimental results are obtained by implementing the controller on a test bed. The measurements of two printing materials under different excitation frequencies show the effectiveness and robustness of the controller cancelling out vibrations.