電気粘性流体を用いた可変減衰器に関する研究

概要

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Electro-Rheological fluid (ERF) has notable characteristics of viscosity which could be applicable for various industrial machines. Viscosity of ERF increases in accordance with the applied electric field. Without an electric field, ERF has the viscosity characteristics of a Newtonian liquid. Variation of viscosity is reversible, and the required time for its variation is said to be as short as 0.001 sec. Numerous applications of ERF in the engineering field have been attempted since the characteristics of ERF were discovered by W. M. Winslow. However, no successful application has ever been reported. This paper deals with the successful application of ERF to a controllable shock absorber system for automobiles. The controllable range of damping force is examined experimentally for various piston speeds. In addition, numerical experiments are performed; in which damping force can be controlled in response to road conditions by using the shock absorber proposed in this paper. Pitching and rolling motions of the automobile are found to be decreased remarkably.
社団法人日本機械学会の論文
1990-04-25