Study on the magnetic decoupling method of magnetic levitation support for interference spectrometers
Ding Chao
Abstract:
Interferometer spectrometer can change the optical path difference of lensby the constant motion of moving mirror, and optical path difference is used for qualitative and quantitative analysis of the function, so keeping uniform velocity and stability in the motion of the moving mirror has a great influence on accuracy and resolution of the spectrometer. In this paper, magnetic levitation device is used as the supporting system of the moving mirror, the motor of the voice coil is the driving system of the moving mirror and we studied the coupling between the two systems of controling the moving mirror. We support a method to analyze the magnetic field in moving mirror system, and decouple the current in the supporting system and driving system. The results show that the control current obtained by this method can effectively control the motion of the moving mirror and keep the moving mirror in a constants peed and stably during the movement.
