| 摘要 |
A detection device ( 8 ) detects radial deflections (x, y) of a rotating element ( 2 ) which is mounted in a base ( 1 ) by means of a magnetic bearing system ( 3 ) so as to rotated about a rotational axis ( 4 ) and feeds these deflections to a control device ( 9 ). Said control device uses the radial deflections (x, y) to determine control signals (Sx, Sy) for the magnetic bearing system ( 3 ) and outputs them to the magnetic bearing system ( 3 ). The detection device ( 8 ) also detects a rotary frequency (f) of the rotating element ( 2 ) and feeds it to the control device ( 9 ). The control device eliminates from the radial deflections (x, y) at least one frequency portion that comprises the portions of the radial deflections (x, y) having frequencies close to a filter frequency that has a defined ratio to the rotary frequency (f). The control device ( 9 ) uses the frequency portion to determine frequency control signals (Fx, Fy) in accordance with a frequency control model. The control device determines a remaining portion using the difference between the radial deflections (x, y) and the frequency portion, and uses said remaining portion to determine remaining control signals (Rx, Ry) in accordance with a remaining control model. The controls signals (Sx, Sy) are then determined by summing up the frequency control signals (Fx, Fy) and the remaining control signals (Rx, Ry).
|
