The analysis of the control system of the active magnetic bearing

The airborne systems of the newest aircrafts are designed in the more electric aircraft (MEA) technology. This technology make an assumption of the use more electrical elements in onboard systems to reduce weight, easier maintainability and to augment safety of the flight. The MEA technology is brought the use of the active magnetic bearings (AMB). Advantages of these systems are the lack of a mechanical contact between the rotor and stator, small losses, no need lubricants, etc. The MEA technology is implemented in aircraft control and actuation systems, too. The actuators are converted the electric or digital control signals to move the flight surfaces of the aircraft. The actuators have more disadvantageous properties, e.g. the overall efficiency, the friction forces, the high complexity. The new technologies are eliminated these negative proprieties. In the paper there are presented the simulation and experimental results of the AMB. There are analyzed the homopolar active magnetic bearing with permanent magnets. This construction of the AMB are designed in the Military University of Technology. There are described the mathematical model of the AMB, the control analysis and experimental results. There are presented the step and frequency characteristics.