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According to the principle of the magnetostriction generating mechanism, the control modelof giant magnetostriction material based on magnetic field and the control method with magnetic fluxdensity are developed. Furthermore, this control method is used to develop a giant magnetostrictivemicro-displacement actuator (GMA) and its driving system. Two control methods whose control vari-ables are current intensity and magnetic flux density are compared with each other by experimentalstudies. Finally, effective methods on improving the linearity and control precision of mi-cro-displacement actuator and reducing the hysteresis based on the controlling magnetic flux densityare obtained.
According to the principle of the magnetostriction mechanism, the control model of giant magnetostriction material based on magnetic field and the control method with magnetic flux density is developed. This control method is used to develop a giant magnetostrictive micro-displacement actuator (GMA) and its driving system. Two control methods whose control intensity-magnetic flux density are compared with each other by experimental systems. Finally, effective methods on improving the linearity and control precision of mi-cro-displacement actuator and reducing the hysteresis based on the controlling magnetic flux densityare obtained.