中文摘要：

针对磁控形状记忆合金（MSMA）执行器中使用弹簧恢复变形存在的问题,设计一种采用2个MSMA元件差动控制方式的新型旋转执行器。分析了差动式MSMA旋转执行器的工作原理、MSMA元件变形与控制磁场及材料导磁率的关系,在磁场分析的基础上设计与研制了差动式MS-MA旋转执行器试验样机。样机的实验结果表明改变励磁绕组电流的大小和频率可实现执行器旋转速度控制。该差动式MSMA旋转执行器减小了控制功率,提高了控制精确度和动态响应速度。

英文摘要：

In order to solve the problem of dealing with the shape recovering of magnetically controlled shape memory alloy （MSMA） actuator by using spring, a new rotating MSMA actuator in the differential control way of the two MSMA elements was proposed in this paper. The operation principle of differential rotating MSMA actuator, the relationship between distortion, control magnetic field and permeability of the MSMA were analyzed. Based on the magnetic analysis, a differential rotating MSMA actuator prototype was designed and built. The experimental results of the prototype machine show that the rotating speed of the actuator can be controlled by changing the amplitude and frequency of the excitation current. The proposed differential MSMA actuator has small control power, high control aeeuracy, and fast dynamic response.