An adaptive electromagnetic torsional vibration absorber

Nader Vahdati, Taher Abu Seer

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations


A rotating equipment vibrates torsionally whenever the RPM of the drive matches one of the torsional natural frequencies. It is easy to control and mitigate the torsional vibration of a shaft of a rotating equipment running at constant speed, but in applications where the drive RPM is no longer a constant and varies widely; there is a need for a wide frequency range adaptive vibration reduction device. Here in this paper, an adaptive electromagnetic torsional tuned vibration absorber (TTVA) is described which its natural frequency is easily tunable with addition of electronics. The electromagnetic TTVA is added to a rotating equipment with torsional vibration problems. The adaptive TTVA adapts its natural frequency as and when needed to keep the torsional vibration of the rotating equipment to a minimum. The TTVA device is a semi-active one, thus requiring very little power. The rotating equipment and the electromagnetic TTVA is modeled using bond graph modeling technique. Analysis results indicate that the torsional vibration of the rotating equipment can be easily controlled using this newly developed semi-active electromagnetic torsional TVA.

Original languageBritish English
Number of pages8
StatePublished - 2013
Event20th International Congress on Sound and Vibration 2013, ICSV 2013 - Bangkok, Thailand
Duration: 7 Jul 201311 Jul 2013


Conference20th International Congress on Sound and Vibration 2013, ICSV 2013


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