Position feedback control using magneto impedance sensors on conveyor with superconducting magnetic levitation

Tetsuhiko Iizuka, Naomichi Sakai, Hiroyuki Fujita

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The driving characteristic of a conveyor with superconducting magnetic levitation is reported. A superconductor (Gd-Ba-Cu-O, Sintered plate) is used to levitate a slider on the surface of a superconductor. In this paper, magneto impedance sensors are used to detect the position of a levitated slider whose size is 7.2 mm square and 2 mm in thickness. This magneto impedance sensor is commercially available and works based on a linear relation between the external magnetic field and the output voltage. This paper describes the results of (1) two-dimensional stepping actuation to arbitrary positions with the step size of 1.2 mm, (2) the maximum conveyance speed of 104 mm/s and (3) successful position feedback control.

Original languageEnglish
Pages (from-to)110-115
Number of pages6
JournalSensors and Actuators, A: Physical
Volume150
Issue number1
DOIs
Publication statusPublished - 2009 Mar 16
Externally publishedYes

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Keywords

  • Conveyance
  • Magnetic levitation
  • Magneto impedance sensor
  • Superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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