Research on rotational pendulum vibration absorbers with phase calibration

• Main Authors: Yu-rong Chen, 陳昱榮
• Other Authors: Shang-Teh Wu
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/24382461334369866693

碩士 === 雲林科技大學 === 機械工程系碩士班 === 98 === In this thesis we study how to suppress vibrations on flexible structure subject to a periodic disturbance using a rotational pendulum vibration absorber. The vibration absorber is coupled to the primary structure through a mechanical spring. The characteristic frequencies of the absorber can be tuned dynamically by adjusting the rotational speed. When the characteristic frequencies are tuned to match the disturbance frequency, the oscillations will be minimized. The condition can be detected by measuring the phase difference between the acceleration of the primary structure and that of the absorber. The experimental platform built for previous research is modified to improve the effect of vibration excitation. The system dynamics is then derived to analyze the system performance. Finally, real-time experiments are conducted to test the performance of the vibration absorber.