抄録
In vertical positioning systems, the friction force and the gravity load may cause serious positioning error. This paper presents the noncontact gravity compensator applying magnetic fluid seals. The magnetic fluid seals were designed for the reciprocating system and the sealing performance of the seals were estimated by the magnetic field analysis using FEM and the results were verified by the experiment. Then the gravity compensating system using the magnetic fluid seals was constructed, and the effectiveness of the system was confirmed.
