Mathematical Modeling and Analysis of Magnetostrictive Actuator
Aiming at the output characteristics and complex physical phenomena of the magnetostrictive actuator,a more accurate dynamic behavior description model of the actuator was proposed and analyzed based on electromagnetic theory,Jiles-Atherton model,energy conservation theory and structural dynamics theory.In this mod-el,the relationship between input current,permeability,dynamic loss,electromagnetic force and other factors and their influence on output characteristics are considered.The Jiles-Atherton model is used to define magnetostrictive materi-als and Maxwell software is used to conduct finite element simulation analysis of actuators with magnetostrictive mate-rials as the core.By combining the simulation results with the mathematical analytical model,a more accurate system dynamics model is obtained.Finally,the system dynamics simulation model was built in MATLAB/Simulink and ana-lyzed.It was found that the alternating electromagnetic force generated by the electromagnetic field made the magne-tostrictive rod pre-pressure bias have a higher output performance on the actuator,while the current,dynamic loss and permeability affected the actuator output by affecting the magnetic field.
Magnetostrictive actuatorFinite element simulationSystem dynamics modelOutput influencing factor
NETL
NSTL
万方数据
维普
