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Single degree of freedom active magnetic bearing support vector machine self-adaption inverse controller construction method

A technology of support vector machine and active magnetic bearing, applied in adaptive control, general control system, control/regulation system, etc.

Active Publication Date: 2014-03-19
淮安仲益电机有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing control methods for single-degree-of-freedom active magnetic bearing systems, and propose a single-degree-of-freedom active magnetic bearing support that does not depend on the precise model of the system and can effectively suppress modeling errors and external disturbance noise Construction Method of Vector Machine Adaptive Inverse Controller

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  • Single degree of freedom active magnetic bearing support vector machine self-adaption inverse controller construction method
  • Single degree of freedom active magnetic bearing support vector machine self-adaption inverse controller construction method
  • Single degree of freedom active magnetic bearing support vector machine self-adaption inverse controller construction method

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Embodiment Construction

[0025] The concrete implementation of the present invention divides following 6 steps:

[0026] 1. If figure 1 As shown, the force-to-current converter 1, switching power amplifier 2, single-degree-of-freedom active magnetic bearing 3, eddy current displacement sensor 4 and displacement interface circuit 5 are taken as a whole to form a composite controlled object 6, and its input is axial suspension Force given signal The output is the axial displacement signal z;

[0027] 2. The axial suspension force signal F z (k) Applied to the input end of the composite controlled object 6, and collect the input axial suspension force signal F of the composite controlled object 6 at different times z (k), F z (k-1), and its output axial displacement signals z(k-1), z(k-2), z(k-3) at different times are used as the input of the support vector machine, and the composite controlled object is collected at 6k times The output axial displacement signal signal z(k) is the output of the su...

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Abstract

The invention relates to a single degree of freedom active magnetic bearing support vector machine self-adaption inverse controller construction method. The method comprises the following steps that 1) a force to current converter, a switch power amplifier, a single degree of freedom active magnetic bearing, an eddy current displacement sensor and a displacement interface circuit are taken as an integral body and form a composite controlled object; 2) a support vector machine is used to construct a regression model and an inverse regression model of the composite controlled object; 3) the inverse regression model is taken as a feedforward controller and is connected in series before the composite controlled object so as to form an inverse controller; 4) weight parameters of the regression model and the inverse controller are adjusted in real time in an on line mode; 5) the inverse controller and the regression model are combined so as to form a support vector machine self-adaption inverse controller which controls the composite controlled object. By using a traditional control method, a system is unstable, which is caused by feedback control. By using the method of the invention, the above problem can be effectively eliminated. Strong adaptability and robustness are possessed to a system mathematics model and parameter changes.

Description

technical field [0001] The invention relates to a single-degree-of-freedom active magnetic bearing support vector machine adaptive inverse controller construction method, which belongs to the technical field of magnetic suspension transmission / drive control. Background technique [0002] The active magnetic bearing uses the electromagnetic force generated by the coil to suspend the rotor in space, and realizes no mechanical contact between the stator and the rotor. It is a new type of bearing with high performance. The main advantages of magnetic bearings are no mechanical friction and wear, no need for lubrication and sealing, low noise, no pollution, high speed and high precision, and long life. Based on the above advantages, magnetic bearings have potential application prospects in high-tech fields such as aerospace, precision machine tools, robots, machinery industry, vacuum technology, and energy transportation. [0003] At present, the control methods applied to singl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
Inventor 孙晓东陈龙江浩斌杨泽斌李可
Owner 淮安仲益电机有限公司
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