The principle of conventional motor driven by giant magnetostrictive material (GMM) is based on friction between rotor and stator, so the motors transmission accuracy and load capability are influenced by friction.

Rare-earth ultra-magneto telescopic motor has more irreplaceable merits in many fields than others,such as high strain,powerful,high power density,high-precision,quick-response,high reliability,etc.

A dynamics model and ANSYS model is proposed to improve the design efficiency of a giant magnetostrictive actuator (GMA), and calculation and simulation of its axial resonant frequency are performed.

This system uses air springs as passive vibration isolation elements and giant magnetostrictive actuators as active vibration isolation elements.

Four vertical actuators and air springs are set in parallel to make use of the giant magnetostrictive actuators effectively.

The giant magnetostrictive actuator is characterized by large displacement, high force, fast response, high reliability, small amount of drift and low voltage drives and so on and has a wide range of potential applications in super-precision positioning, micro-motor, vibration control and fluid machinery, etc.

The results show that the annealing can influence the microstructure and magnetostriction in the TbDyFe alloy.

It was found that, after annealing, <110> preferred orientation is unchanged, the net shape pseudo-eutectic rare earth phase trends discontinuous and spheroidal, magnetostriction slightly decreased without pre-stress but increased o.

The effect of GMM alloy and epoxy volume ratio on magnetostriction and density of GMPC was studied,and dynamic resistivity of GMPC was tested and discussed.