장력제어용 고출력 MR 브레이크

A Study on High-output MR (Magneto-rheological) Brake for Tension Control

  • 박중호 (한국기계연구원 지능형정밀기계연구본부) ;
  • 김진규 (한국기계연구원 지능형정밀기계연구본부) ;
  • 윤동원 (한국기계연구원 지능형정밀기계연구본부) ;
  • 함상용 (한국기계연구원 지능형정밀기계연구본부) ;
  • 노종호 ((주)하이드로메틱스) ;
  • 유진산 ((주)하이드로메틱스)
  • 발행 : 2007.05.30

초록

MR fluid is a suspension of micrometer-sized magnetizable particles in silicon oil and a functional fluid whose apparent viscosity can be controlled by the applied magnetic field strength. In this paper, a rotary brake using MR fluid called MR brake for tension control of precision machinery such as roll-to-roll printing machinery is presented. First, to obtain the higher performance than conventional powder brake, a MR brake with a modified rotor shape is newly designed and analyzed using FEM. Second, the prototype of MR brake is fabricated with the optimized structural parameters and an experimental apparatus is constructed. Then, basic characteristics of the MR brake are investigated with the different MR fluids. Finally, the validity of the developed MR brake is verified through the comparison with the conventional powder brake.

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