Radial active magnetic suspension bearing fault tolerant control method based on coordinate transformation
A technology of magnetic suspension bearing and fault-tolerant control, which is applied in the direction of magnetic attraction or thrust holding device, electrical components, etc., and can solve problems such as active magnetic suspension bearing failure
Inactive Publication Date: 2010-11-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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The failure of any link will lead to the failure of the active magnetic bearing
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The invention discloses a radial active magnetic suspension bearing fault tolerant control method based on coordinate transformation, belonging to an active magnetic suspension bearing fault tolerant control method; the control method comprises the following steps: firstly, radial active magnetic suspension bearing faults are classified according to the structure of a radial active magnetic suspension bearing, and the faults having the same effect on a stator magnetic circuit is defined into the same kind; secondly, aiming at each kind of the radial active magnetic suspension bearing faults, one condition is chosen, current allocation matrix is obtained by adopting bias current linearization theory; thirdly, the current allocation matrix is adopted, the radial active magnetic suspension bearing fault tolerant control method based on coordinate transformation is adopted to realize the fault tolerant control of the faults with the same kind. The method reduces the number of current allocation matrixes needed to be solved in the radial active magnetic suspension bearing fault tolerant control.
Description
A fault-tolerant control method for radial active magnetic suspension bearings based on coordinate transformation technical field The invention relates to a coordinate transformation-based fault-tolerant control method for a radial active magnetic suspension bearing, and belongs to the technical field of radial active magnetic suspension bearing control. Background technique The active magnetic suspension bearing is a new type of bearing that realizes the stable support of the rotor through the controllable electromagnetic force. Its main feature is that through a closed-loop control system, the rotor is stably suspended in the center of the stator magnetic poles under the action of the stator magnetic force, so that there is no contact between the rotor and the stator, and thus no lubrication, no sealing, high-speed rotation, and It has the advantages of working under extreme temperature conditions and vacuum environment, and its support stiffness and damping are controll...
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IPC IPC(8): H02N15/00
Inventor 徐龙祥崔东辉
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS