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A PENDULUM FEEDBACK SYSTEM TO MEASURE THE LATERAL FORCE ON A MAGNET PLACED ABOVE A HIGH-CRITICAL TEMPERATURE SUPERCONDUCTOR.

Author(s) : JOHANSEN T. H.

Type of article: Article

Summary

BASED ON A SIMPLE MECHANICAL PENDULUM DESIGN, THE AUTHORS DEVELOPED A SENSOR FOR MEASUREMENT OF THE HORIZONTAL FORCE ON A PERMANENT MAGNET PLACED AT ANY DISTANCE ABOVE A HIGH-CRITICAL TEMPERATURE SUPERCONDUCTOR. IN THIS FULLY COMPUTERIZED SYSTEM, WHICH EMPLOYS CLOSED-LOOP FEEDBACK CONTROL, THE LATERAL INTERACTION WITH ITS RESTORING AND HYSTERETIC NATURE CAN BE STUDIED UNDER CONDITIONS OF CONSTANT VERTICAL SEPARATION. RESULTS ARE PRESENTED FOR THE CASE OF A SMALL NEODYMIUM-IRON-BORON MAGNET AT A DISTANCE OF 1 MM ABOVE A LARGE PLANAR DISK OF A YBACUO SUPERCONDUCTOR.

Details

  • Original title: A PENDULUM FEEDBACK SYSTEM TO MEASURE THE LATERAL FORCE ON A MAGNET PLACED ABOVE A HIGH-CRITICAL TEMPERATURE SUPERCONDUCTOR.
  • Record ID : 1991-1003
  • Languages: English
  • Source: Rev. sci. Instrum. - vol. 61 - n. 12
  • Publication date: 1990
  • Document available for consultation in the library of the IIR headquarters only.

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