Automatic balancing magnetic suspension rotor system based on displacement stiffness force lead compensation
A magnetic levitation rotor and automatic balancing technology, which is applied in the general control system, control/regulation system, torque/mechanical power control, etc., can solve the problems of reducing the effect of automatic balancing, increasing, and lagging
Inactive Publication Date: 2015-03-18
BEIHANG UNIV
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Problems solved by technology
This method can achieve automatic balance when it is used for low-speed rotors, but when it is used for high-speed rotors, the low-pass characteristic of the power amplifier link of the magnetic bearing control system tends to be significant, and there are high-frequency attenuation and hysteresis in the displacement stiffness force compensation, and the compensation accuracy decreases.
The above effects increase significantly with the increase of the speed, which seriously reduces the effect of automatic balancing
Therefore, existing methods cannot meet the requirements of automatic balancing of maglev rotors
Method used
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[0023] Such as image 3 As shown, the automatic balancing magnetic levitation rotor system based on displacement stiffness force advanced compensation used in this embodiment includes an automatic balancing module 1, a stability controller 2, a magnetic bearing power amplifier 3, an electromagnet-rotor 4, and a displacement sensor 5. The displacement sensor 5 detects the position of the electromagnet-rotor 4 in real time, and converts the rotor displacement into a voltage signal output; the automatic balance module 1 receives the rotor displacement signal output by the displacement sensor 5, implements an automatic balance control algorithm, and outputs non-same-frequency displacement signals and the same frequency compensation signal; the stability controller 2 receives the non-same-frequency displacement signal output by the automatic balance module 1, and runs the magnetic bearing stability control algorithm to generate a non-same-frequency control signal to stabilize the ro...
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The invention discloses an automatic balancing magnetic suspension rotor system based on displacement stiffness force lead compensation. The automatic balancing magnetic suspension rotor system comprises an automatic balancing module, a stabilization controller, a magnetic bearing power amplifier, an electromagnet rotor and a displacement sensor, wherein the automatic balancing module comprises a generalized wave trap and a lead compensator; the generalized wave trap extracts unbalanced information in a rotor displacement signal; and the lead compensator performs lead feed-forward compensation.. Automatic balancing control is introduced on the basis of stabilization control of the magnetic suspension rotor, a simplified inverse model of the power amplifier is constructed based on the frequency characteristics of the magnetic bearing power amplifier, the influence of the low-pass characteristics of the power amplifier on the displacement stiffness force compensation precision is eliminated, the common-frequency bearing force is greatly reduced, and the automatic balancing precision of the magnetic suspension rotor is obviously improved. The automatic balancing magnetic suspension rotor system based on the displacement stiffness force lead compensation is simple and practicable and is particularly suitable for an actual magnetic suspension rotor system.
Description
technical field [0001] The invention relates to an automatic balancing magnetic suspension rotor system based on advanced compensation of displacement stiffness force, which is used for high-precision automatic balancing of magnetic suspension rotors, and is especially suitable for high-speed magnetic suspension rotors such as magnetic suspension control moment gyroscopes. Background technique [0002] Magnetic suspension bearing is a new type of high-performance bearing. It uses a controllable electromagnetic field to stably suspend the rotor at a given position. It has outstanding advantages such as non-contact, active controllable stiffness, no friction and wear, and no lubrication. Ideal support for rotor systems. [0003] Industrial rotors have residual unbalance and long-term slow change. The centrifugal force of the unbalance during high-speed rotation is one of the most important disturbance sources of the maglev high-speed rotor system, which causes the rotor to vib...
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IPC IPC(8): G05B13/04G05D17/02
Inventor 魏彤向岷徐向波赵林刘云波郭蕊
Owner BEIHANG UNIV
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