強磁性材料と超弾性材料からなる磁気駆動トルクアクチュエータの駆動解析手法の検討

抄録

In recent years, fast-responsiving, high power and large deformability are required for the actuator in the aerospace industry. The ferromagnetic shape memory alloy composite material that consists of the ferromagnetic material and the superelastic wire is expected as the actuator element with fast-responsive, high power and large deformability. The purpose of this study is to develop the magnetic drive torque actuator that uses the ferromagnetic shape memory alloy composite material. In this paper, the simulation method of the driving for the magnetic driving torque actuator is investigated by using FEM analysis. The superelastic wire shape in the state of no torque is analyzed by rolling a straight superelastic wire in the actuator by using a virtual roller. Furthermore, the superelastic wire shape in the torque loading is analyzed by applying torque to the revolving shaft. The superelastic wire shape before and after the torque loading corresponds to the experiment results well. Next, the revolving shaft is rotated by applying the magnetic force generated in a ferromagnetic material to the superelastic wire after the load of torque, and the driving rotation angle is simulated. As a result of the analysis, the driving rotation angle was 70.84 degrees. The analytical result was larger than 28.6 degrees of the experiment result. In the experimental, the magnetic force changes depends on the number of a ferromagnetic material in contact with the york. But, the number of a ferromagnetic material in contact with the york was not considered in the analysis. It is thought that the driving rotation angle can be analyzed more accurately by considering the difference with experimental conditions.