Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Bingham Properties and Damping Force Control of an ER Fluid under Squeeze Mode

압착모드하에서 ER유체의 빙햄특성 및 댐핑력 제어

  • 홍성룡 (인하대학교 기계공학과 대학원) ;
  • 최승복 (인하대학교 기계공학과)
  • Published : 2002.11.01
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Abstract

This paper presents the field-dependent Bingham characteristics and damping force control of an electro-rheological (ER) fluid under squeeze mode operation. The squeeze force of the ER fluid due to the imposed electric field is analyzed and an appropriate size of the disk-type electrode is devised. On the basis of the theoretical model of the ER fluid under squeeze mode operation, the yield stress and response speed of the ER fluid are distilled from the time responses of squeeze force to the step electric potentials. Measured squeeze forces under various excitation conditions are compared with the predicted ones from Bingham model and time constant obtained at the transient response test. In addition, the controllability of the field-dependent damping force of the ER fluid under squeeze mode is experimentally demonstrated by implementing simple PID controller.

Keywords

References

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