High-precision field dynamic balancing method for magnetic levitation rotor
A magnetic levitation rotor and on-site dynamic balancing technology, which is applied in the field of magnetic levitation rigid rotor and magnetic levitation rotor high-precision on-site dynamic balance, can solve the problems of poor precision and cumbersome steps, and achieve the effects of simplified equipment, simple algorithm and wide adjustment range
Active Publication Date: 2016-11-23
BEIHANG UNIV
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Problems solved by technology
[0007] The technical problem to be solved by the present invention is to overcome the disadvantages of cumbersome steps and poor precision in the dynamic balancing method of the magnetic levitation rotor system in the prior art, and to provide a magnetic levitation rotor system with unknown characteristic parameters without using a dynamic balancing machine. A high-precision on-site dynamic balancing operation can be directly performed on the unbalanced rotor of this unknown system, the steps are simple, the efficiency is high, and the cost of this dynamic balancing method is extremely low
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Embodiment Construction
[0035] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0036] (1) if figure 1 As shown, it is a schematic structural diagram of the magnetic levitation rotor shaft system involved in the present invention, and the rotor shaft system includes a rotor, a balance plane A, a balance plane B, a magnetic bearing A and a magnetic bearing B. where L 1 is the distance from balance plane A to magnetic bearing A, L 2 is the distance from magnetic bearing A to magnetic bearing B, L 3 is the distance from the balance plane B to the magnetic bearing B, lam is the distance from the magnetic bearing A to the center of mass C, l bm is the distance from magnetic bearing B to centroid C.
[0037] (2) The magnetic levitation rotor system is composed of a magnetic bearing controller, a power amplifier, a magnetic bearing, a rotor system and a displacement sensor. The displacement sensor measures the rotor displacement and...
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The invention relates to a high-precision field dynamic balancing method for a magnetic levitation rotor. The method comprises the following steps: firstly, establishing a relation between correcting mass and radial four-channel same-frequency control current when the magnetic levitation rotor is rotated around a geometrical axis; respectively testing mass for three times on the balancing plane A, balancing plane B as well as balancing plane A and balancing plane B; increasing speed to the same rotating speed after weighting for each time; measuring and extracting the radial four-channel same-frequency control current under the condition that the magnetic levitation rotor is rotated around the geometrical axis; lastly, calculating the size and position of the correcting massand performing corresponding unbalancemass dynamic balancing operation on the balancing plane A and balancing plane B. According to the field dynamic balancing method provided by the invention, the rigid magnetic levitation rotor with unknown characteristic parameters can be directly subjected to dynamic balancing operation, the steps are simple and the efficiency is high.
Description
technical field [0001] The invention belongs to the technical field of magnetic suspension rotors, in particular to a high-precision on-site dynamic balancing method for magnetic suspension rotors, which is used for on-site dynamic balancing of magnetic suspension rigid rotors, and is especially suitable for magnetic suspension rigid rotors whose characteristic parameters are unknown. Background technique [0002] Electromagnetic bearing is a new type of bearing that uses electromagnetic force to make the bearing float stably and the position of the shaft center can be controlled by the control system. Compared with traditional bearings, it has the advantages of high allowable speed, no mechanical wear, no lubrication, active control, and status monitoring. It is an ideal support method for high-precision, long-life high-speed rotor systems. [0003] During the process of processing, manufacturing and assembling of the rotor, due to inconsistent material properties, processi...
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Login to View More IPC IPC(8): G01M1/16G01M1/18
CPCG01M1/16G01M1/18
Inventor 刘刚陈琪郑世强韩邦成周金祥张寅
Owner BEIHANG UNIV