Abstract
A spring-type actuator i s presented, which has both restoring force and actuator characteristics. The fer ri te particle layer is made of silicon paste and ferrite particles, in which fer ri te particles are pasted by the si licon paste. The ferrite particle layer is pasted to the coi l of the spr ing, and so the layers are constructed inside of the coil spring with small gaps. When magnetic fields apply to the coil spring, att ractive forces apply between ferrite layers, and so the spring deforms due to the magnetic fie ld. In the present article, a method of production of the actuator is presented, and its control method i s also developed. To validate the actuator, a step response and frequency response has been discussed.
