Amplification of useful vibration using on-off damping

How to Cite

Viet, L. D. (2020). Amplification of useful vibration using on-off damping. Vietnam Journal of Mechanics, 42(1), 87–94.


This paper points out how much useful vibration can be extracted from a base-excited oscillator, which is controlled by the on-off electrical damping. We study the class of on-off electrical damping controller, which switches the damping level from high to low and back at fixed times every quarter of period. The problem reduces to the maximization of a single-variable function. This result can open the new direction to amplify the useful vibration using controllable dampings.


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