In this paper, the dynamic behavior of a one degree-of-freedom (DOF) contactless linear slider based on superconducting magnetic levitation is experimentally analyzed. The device is intended for precision positioning of an optic mirror in cryogenic environments. Different prototypes of this device have been tested at cryogenic temperatures (77 K), and their mechanical behavior characterized in the sliding direction for forced and unforced oscillations. Experimental results reveal that the slider is self-stable at the initial equilibrium position and the dynamic behavior fits well an underdamped harmonic oscillator. Finally, the device showed great potential for horizontal vibration isolation, acting as a low-pass filter with a resonance at about 0.9 Hz.
Dynamics of a Superconducting Linear Slider
Dto. de Ingeniería Mecánica,
Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received May 29, 2013; final manuscript received October 20, 2014; published online November 14, 2014. Assoc. Editor: Philip Bayly.
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Valiente-Blanco, I., Perez-Diaz, J., and Diez-Jimenez, E. (April 1, 2015). "Dynamics of a Superconducting Linear Slider." ASME. J. Vib. Acoust. April 2015; 137(2): 021002. https://doi.org/10.1115/1.4028928
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