Research on giant magnetostrictive material controller mode

The controller mode of giant magnetostrictive material (GMM) inchworm was presented in this paper. According to the research background included the material applications in abroad and home. The design of the mechanical actuator of the device is given, which consists of the extending and clamping element. The mathematical modeling of the magnetostrictive actor is made. The static displacement is derived. After the careful observation of the inchworm movement, the sequence of each element action in the device is determined and then the control signal is also set, the electronic controller is then designed output is a three-way signal to drive the extending and clamping. The hardware and software of micro controller are discussed The basic property of the magnetostrictive actuator is studied, which consist of the GMM extending and contracting distance under the different condition of voltage and so on. According to the characteristics of GMM, the controller mode ofPID was picked up.