Abstract
Many insects can jump several times their own body length. Locusts with their powerful hind-leg can for example jump up to five times as high 250mm. We have been working on high power joint mechanism imitating locust hind-leg. The mechanism can produce a several times as much power as mounted actuator and separates normal and rapid motion by controlling the actuator force. This paper proposes fin actuator with the high power joint mechanism which can realize rapid motion of two directions. The fin actuator consist two motors with cams, two wires, one spring and L-shape link. Our analysis of output characteristics showed that the proposed fin actuator develops higher output power than mounted actuator.
