Journal of Magnetics

  • 제17권4호
  • /
  • Pages.285-290
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  • 2012
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  • 1226-1750(pISSN)
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  • 2233-6656(eISSN)
한국자기학회 (The Korean Magnetics Society)
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Comparisons of Linear Characteristic for Shape of Stator Teeth of Hall Effect Torque Sensor

  • Lee, Boram (School of Information and Communication Engineering, Sungkyunkwan University) ;
  • Kim, Young Sun (Department of Electrical and Electronic Engineering, Joongbu University) ;
  • Park, Il Han (School of Information and Communication Engineering, Sungkyunkwan University)
  • 투고 : 2012.11.25
  • 심사 : 2012.12.12
  • 발행 : 2012.12.31
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초록

Electric Power Steering (EPS) system is superior to conventional Hydraulic Power Steering (HPS) system in aspect of fuel economy and environmental concerns. The EPS system consists of torque sensor, electric motor, ECU (Electric Control Unit), gears and etc. Among the elements, the torque sensor is one of the core technologies of which output signal is used for main input of EPS controller. Usually, the torque sensor has used torsion bar to transform torsion angle into torque and needs linear characteristic in terms of flux variation with respect to rotation angle of permanent magnet. The torsion angle of both ends of a torsion bar is measured by a contact variable resistor. In this paper, the sensor is accurately analyzed using 3D finite element method and its characteristics with respect to four different shapes of the stator teeth are compared. The four shapes are rectangular, triangular, trapezoidal and circular type.

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참고문헌

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