The Performance Study of the Giant Magnetostrictive Actuator

Giant magnetostrictive actuator (GMA) is a new type of vibration control driving device. Since it has a lot of nonlinear, its performance model has been can't descrip good. This paper describes the self-made physical design of GMA, develop the GMA performance research experiment. For different excitation voltage, GMA was studied respectively the dynamic response with or without the bias magnetic field. And according to the application of GMA,verified under the condition of have a bias current, the accuracy of the magnetic coupling force curve of the GMA. According to the results of the validation, its curve can better describe the dynamic performance of giant magnetostrictive actuator.