Development of a new active vibration controller based on virtual tuned-mass-damper analogy for structures subjected to harmonic disturbances

Abstract

This study is concerned with the development of control algorithm analogous to the tuned mass damper for the active vibration suppression of structures subjected to harmonic disturbance. The controller itself acts like an ordinary tuned mass damper, so is here called a virtual tuned mass damper (VTMD). Because the tuned mass damper can absorb vibrations of a primary structure subjected to harmonic disturbance, the proposed VTMD control algorithm can do that also. The VTMD control algorithm proposed in this study uses only the acceleration of the primary structure, so it is both practical and efficient. The VTMD control algorithm is so simple that it can be easily implemented by using either an analog circuit or a digital controller. The multiple VTMD control can be designed to suppress periodic disturbances composed of several frequencies. The theoretical and experimental results showed that the proposed VTMD control algorithm is effective in accommodating harmonic disturbance and resonant vibrations. © Proceedings of 2020 International Congress on Noise Control Engineering, INTER-NOISE 2020. All rights reserved.