monoharmonic

In contrast to [ 48 ] where modes 2 and 3 were vibrating at the same time and the acceleration data is double-time integrated to estimate cable amplitudes whereby the noise in the in- and out-of-plane signals is suppressed, the acceleration data here is bandpass filtered by a Butterworth filter of order 6 with lower cut-off frequency at 6 Hz and upper cut-off frequency at 17 Hz in order to suppress measurement noise but not attenuate the predominant monoharmonic vibration signal at approximately 12 Hz.

2015 June 17, Felix Weber, Hans Distl, “Damping Estimation from Free Decay Responses of Cables with MR Dampers”, in The Scientific World Journal, volume 2015, →DOI