Abstract
A booster for remotely driven hydraulic robot hand has been manufactured and tested. Usually a human hand can generate stronger force than that of robot hand. This booster amplifies the hydraulic pressure to obtain strong hand force using a small pump. The pressure area of both side of a free piston is different. The boosted pump pressure multiplied by the area ratio of the free piston is applied to the finger piston. The experimental data of pressure amplification was 26, which was very close to the theoretical value 27. The displacement of the free piston should be measured in order to detect the actuator motion. Magnetic and fluid measuring method has been tested successfully. Bellows and plunger type small pumps were also manufactured and tested successfully.
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