超磁致伸缩材料是近年来发展起来的一种新型功能材料。在分析了超磁致伸缩材料的驱动原理 ,并给出了它的两种驱动结构形式的基础上 ,对采用电流和磁感应强度做为控制量的两种控制方法进行了对比分析和实验研究 ,得出了基于磁感应强度的控制方法可提高超磁致伸缩微位移执行器的线性度和控制精度、减小迟滞的结论。 Giant magnetostrictive material is developed in recent years, a new type of functional materials. Based on the analysis of the driving principle of Giant Magnetostrictive Materials and the two driving structures of Giant Magnetostrictive Materials, the comparison and experimental research on two control methods using current and magnetic induction as control variables are made. It is concluded that the control method based on the magnetic flux density can improve the linearity and control precision of the giant magnetostrictive micro-displacement actuator and reduce the hysteresis.