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A Switch-controller for Improved Measurements in the NIST Magnetic Suspension Mass Comparator

Author(s)

Nicholas A. Vlajic, Melissa L. Davis, Corey A. Stambaugh

Abstract

We describe a switch-based control strategy implemented on a proof-of-concept version of the Magnetic Suspension Mass Comparator (MSMC) at the National Institute of Standards and Technology. The MSMC apparatus is used to compare mass artifacts held in air to mass artifacts held in vacuum, without having to remove either mass from its respective environment; thus, eliminating the need to use empirical sorption models. This comparison is achieved by magnetically suspending the mass held in air. The switch-controller utilizes a combination of a magnetic field and displacement measurement to achieve the desired robustness and stability.
Conference Dates
July 8-13, 2018
Conference Location
Paris
Conference Title
2018 Conference on Precision Electromagnetic Measurements in Paris, France.

Keywords

magnetic suspension, mass metrology, sorption, state-feedback control, switch controller.

Citation

Vlajic, N. , Davis, M. and Stambaugh, C. (1970), A Switch-controller for Improved Measurements in the NIST Magnetic Suspension Mass Comparator, 2018 Conference on Precision Electromagnetic Measurements in Paris, France., Paris, -1 (Accessed June 19, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created January 25, 2018, Updated January 19, 2018