Active Magnetic Bearing Digital Control System

Active Magnetic Bearing (AMB) is a kind of novel high-performance bearing, in which rotor can be suspended by magnetic force. Because of the contact-free property between the rotor and stator, the rotor can rotate at very high speed, and AMB has the advantage of long lifetime, low power loss, low noise almost no wear and no lubrication. Thus AMB has great advantages over conventional bearing in many application fields.This thesis makes base on the analysis of AMB working principle, and erect the model of single-freedom-degree transfer function and five-freedom-degree state equation for rotate axis in AMB system. For the development of hardware in digital controller, TMS320F240 DSP is used in hardware design. On the basis of theory analysis for controller system, the difference equations fit for digital controller are exported from the analog PID. Based on above mentioned hardware system, the software design for digital controller is realized. At last we give the software and hardware design, debugging and DSP realization.