Nonlinear Hysteretic Model of Giant Magnetostrictive Material Baesd on Inverse Magnetostritive Effect

Abstract

In this paper, a kind of giant magnetostrictive material (GMM) model based on inverse magnetostritive effect was developed. Van de Pol nonlinear difference item was introduced to interpret the hysteresis phenomenon of the strain-magnetic field intensity (MFI) curve of GMM. The coupling relationship between strain and frequency was obtained in partial least-square regression method to describe the driftage phenomenon of the strain-MFI curves of GMM in different frequencies. Based on above, the final relationship among strain, MFI and frequency was set up. The result of significance test shows that the effects of all of the items in the final model are remarkable, and that of forecast test shows that the model can describe the characteristics of inverse magnetostritive effect of GMM in different frequencies well. The new GMM model is easy to be analyzed in theory, which is helpful to sensor design.

Research on Hysteresis Modeling and Compensation Method of Giant Magnetostrictive Force Sensor

“…The characteristics of GMMs are well suited to the development of highperformance force sensors, especially their fast response speed, high energy conversion efficiency, and high compressive strength [17][18][19]. However, irreversible phenomena such as domain rotation and domain wall movement in the magnetization process of GMMs will cause energy loss in the system and result in hysteresis, which is characterized by multivalued and nonlinear characteristics in the flux density vector, magnetization vector, and magnetic field inten-sity vector [20][21][22][23]. Different from the common nonlinear links in nonlinear control theory, GMM nonlinearity exhibits its own memory and single-input/multiple-output mapping characteristics.…”