The extreme sensitivity of a scanning probe microscope demands an exceptional noise cancellation device that could effectively cut off a wide range of vibration noise. Existing commercial devices, although excellent in canceling high frequency noise, commonly leave low frequency vibration unattenuated. We design an add-on active stage that can function together with a standalone existing active stage. The objective is to provide a higher level of noise cancellation by lowering the overall system cut-off frequency. This study is concerned with the theoretical aspects of the coupling characteristics involved in stacking independently designed stages together to form a two-stage isolator. Whether an add-on stage would pose a stability threat to the existing stage needs to be addressed. In addition, we explore the use of coupling effects to optimize the performance of the overall system.
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e-mail: qsun@ucalgary.ca
e-mail: rwolkow@ualberta.ca
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December 2009
Research Papers
Low Frequency Vibration Isolation Through an Active-on-Active Approach: Coupling Effects
Qiao Sun,
Qiao Sun
Department of Mechanical and Manufacturing Engineering,
e-mail: qsun@ucalgary.ca
University of Calgary
, 2500 University Drive, NW, Calgary, AL, T2N 1N4, Canada
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Robert A. Wolkow,
Robert A. Wolkow
Department of Physics,
e-mail: rwolkow@ualberta.ca
University of Alberta
, Edmonton, AL, T6G 2J1, Canada; National Institute for Nanotechnology
, 11421 Saskatchewan Drive, Edmonton, AL, T6G 2M9, Canada
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Mark Salomons
Mark Salomons
Department of Physics,
University of Alberta
, Edmonton, AL, T6G 2J1, Canada; National Institute for Nanotechnology
, 11421 Saskatchewan Drive, Edmonton, AL, T6G 2M9, Canada
Search for other works by this author on:
Qiao Sun
Department of Mechanical and Manufacturing Engineering,
University of Calgary
, 2500 University Drive, NW, Calgary, AL, T2N 1N4, Canadae-mail: qsun@ucalgary.ca
Robert A. Wolkow
Department of Physics,
University of Alberta
, Edmonton, AL, T6G 2J1, Canada; National Institute for Nanotechnology
, 11421 Saskatchewan Drive, Edmonton, AL, T6G 2M9, Canadae-mail: rwolkow@ualberta.ca
Mark Salomons
Department of Physics,
University of Alberta
, Edmonton, AL, T6G 2J1, Canada; National Institute for Nanotechnology
, 11421 Saskatchewan Drive, Edmonton, AL, T6G 2M9, CanadaJ. Vib. Acoust. Dec 2009, 131(6): 061010 (7 pages)
Published Online: November 20, 2009
Article history
Received:
October 20, 2008
Revised:
May 19, 2009
Online:
November 20, 2009
Published:
November 20, 2009
Citation
Sun, Q., Wolkow, R. A., and Salomons, M. (November 20, 2009). "Low Frequency Vibration Isolation Through an Active-on-Active Approach: Coupling Effects." ASME. J. Vib. Acoust. December 2009; 131(6): 061010. https://doi.org/10.1115/1.4000477
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