A Switch-controller for Improved Measurements in the NIST Magnetic Suspension Mass Comparator
Nicholas A. Vlajic, Melissa L. Davis, Corey A. Stambaugh
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.
July 8-13, 2018
2018 Conference on Precision Electromagnetic Measurements in Paris, France.
magnetic suspension, mass metrology, sorption, state-feedback control, switch controller.
, Davis, M.
and Stambaugh, C.
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 December 7, 2023)