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Dynamic characteristics and optimization design for disc-shape electro-rheological actuator

  • Liu Xiao-mei  (刘晓梅)Email author
  • Huang Yi-jian  (黄宜坚)
Article
  • 33 Downloads

Abstract

A disc-shape electro-rheological actuator was developed. The torque generated by a pair of rotary discs consists of two components: the torque from the viscosity of electro-rheological fluid(ERF) and the torque owing to the field-dependent yield shear stress. The former contributes to the viscous power loss. Changing the application of electric field between the two discs, the output torque of ER actuator can be controlled to amplify the torque of input signal to overcome the load and friction. Relationships between the main structure parameters, the dynamic characteristics of the device, the physical properties of ERF and the torque transmission, range of speed regulation, power loss, stiffness of system were discussed. A multi-object programming model was set up for the optimization design. Experimental simulations with step and pulse signals were presented.

Key words

electro-rheological actuator structure parameters optimization design power loss 

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References

  1. [1]
    LEE H G, CHOI S B. Dynamic properties of an ER fluid under shear and flow modes [J]. Materials and Design, 2002, 23: 69–76.CrossRefGoogle Scholar
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    SCHWARZ S. Elektrorheologische fluide-charakterisierung und anwendungen [M]. Duesseldorf: VDI-Verl, Universitaet der Bundeswehr Hamburg, 1997.Google Scholar
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    CHOI S B, HAN S, KIM H K, et al. H8 control of a flexible gantry robot arm using smart actuators [J]. Mechatronics, 1999, 9: 271–286.CrossRefGoogle Scholar

Copyright information

© Central South University Press, Sole distributor outside Mainland China: Springer 2007

Authors and Affiliations

  • Liu Xiao-mei  (刘晓梅)
    • 1
    Email author
  • Huang Yi-jian  (黄宜坚)
    • 1
  1. 1.College of Mechanical Engineering and AutomationHuaqiao UniversityQuanzhouChina

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