Research Of Virtual Instruments On The Active Magnetic Bearing System And Active Magnetic Bearing System With Disc-type Rotor

A set of virtual instruments used in the Active Magnetic Bearing system are developed in this thesis, with the software LabVIEW of NI (National Instruments) company and related hardware. They include one virtual digital oscillograph, one virtual sinusoidal signal generator and one virtual noise spectrum analyzer. The virtual digital oscillograph can not only complete the 4 channels'voltage signal with±10V and 0~20kHz synchronized gathering and display, but also has the functions of digital filtering, real-time spectral analysis, memory and playback, network transmission, and so on. The virtual sinusoidal signal generator can complete the 2 channels'sinusoidal signals synchronized outputting. The signals'frequency range is 1~20kHz, and the voltage range is±1.5V. What's more, the virtual sinusoidal signal generator has the function of frequency-sweeping. The virtual noise spectrum analyzer can carry on the spectral analysis to the sound signal.At the same time, in view of the disc-type rotor's unique feature, a set of Active Magnetic Bearing system with disc-type rotor is developed in this thesis. It realizes the stable static-suspense of the disc-type rotor using three axial magnetic bearings and two pairs of radial magnetic bearings, and drives the rotor to revolve through an axial magnetic field motor.In the experiment of static-suspense and revolving of Active Magnetic Bearing System with Disc-type Rotor using the virtual instruments, we may see that the three virtual instruments developed in this thesis can complete the task well, and the rotor could be suspended stably and rotated at a speed of 600r/min.