超磁致伸缩致动器的数学模型和控制技术

Mathematical model and control technology of giant magnetostrictive actuator

采用超磁致伸缩材料Terfenol-D可以研制出推进力大、量程大、纳米级分辨率的超磁致伸缩致动器,在超精密加工、精密定位、机器人以及微型机电系统等领域有着广阔的应用前景.本文对超磁致伸缩材料的磁化机理、超磁致伸缩致动器的非线性模型、控制技术及精密位移控制系统作了较为详细的评述,并指出了超磁致伸缩致动器的模型与控制技术的发展趋势.

Giant magnetostrictive materials can be used to make an actuator with a large force,big range,and nanometerdegree sensibility,which has a prospect of wide application in the field of accuracy working,accuracy position,robots as well as micro-mechanical and electrical system.In this paper,the magnetic mechanism,non-linear model,controlling technology of giant magnetostrictive actuators and their accuracy displacement controlling system have been discussed.The development trend of the model and controlling technology for giant magnetostrictive actuators is pointed out at last.