Journal of Shanghai University >
Torsional vibration and vibration suppression in power drives
Received date: 2015-04-01
Online published: 2017-04-30
Torsional vibration causes oscillation and increases mechanical transmission wear. It is a main constraint in improving dynamic performance of drive systems. A parallel resonant circuit theory is used to analyze the mechanism and energy transfer process during torsional vibration. With a quality factor for assessing the degree of harm, torsional torque caused by torsional vibration harmonic content is quantitatively calculated, showing that a large inertia load leads to a great degree of torsional vibration damage, and even a small harmonic torque can cause torque of several dozens of times as large. Torque feedback is introduced to inhibit torsional vibration, and a design method of torque observer with limited bandwidth is presented. The torque feedback control based on observer can raise the resonant frequency. A sensitivity analysis is done for some critical system parameters. The analysis and simulation studies show that the proposed method can suppress resonance.
YANG Ying, YU Yanpu, HUANG Rui, HAN Bing . Torsional vibration and vibration suppression in power drives[J]. Journal of Shanghai University, 2017 , 23(2) : 225 -234 . DOI: 10.3969/j.issn.1007-2861.2015.03.009
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