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A real-time compensation method for the disturbance force on the rotor in the magnetic suspension bearing system

A technology of magnetic suspension bearing and real-time compensation, which is applied in the field of CNC machine tools to achieve the effects of improving position control accuracy, fast resuspension, and eliminating influence

Active Publication Date: 2021-04-20
CHANGZHOU INST OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for real-time compensation of the disturbance force suffered by the rotor in the magnetic suspension bearing system, which solves the problem of accurately detecting the real-time vibration acceleration of the rotor and quickly compensating the disturbance force in real time to reduce the influence of the external disturbance force on the vibration displacement of the rotor technical problem

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  • A real-time compensation method for the disturbance force on the rotor in the magnetic suspension bearing system
  • A real-time compensation method for the disturbance force on the rotor in the magnetic suspension bearing system
  • A real-time compensation method for the disturbance force on the rotor in the magnetic suspension bearing system

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Embodiment Construction

[0027] Such as Figure 1-Figure 4 A method for real-time compensation of the disturbance force suffered by the rotor in the magnetic suspension bearing system includes the following steps:

[0028] Step 1: Install the rotor vibration acceleration online detection device on the rotor of the magnetic suspension bearing system. The rotor vibration acceleration online detection device includes a ball bearing. The inner ring of the ball bearing is fixed on the rotor, and the outer ring of the ball bearing is installed on a bearing seat. The acceleration sensor is arranged on the bearing seat, and the acceleration sensor is used to detect the vibration acceleration of the bearing seat;

[0029] The acceleration sensor indirectly detects the vibration acceleration of the rotor by detecting the vibration acceleration of the bearing seat.

[0030] The ball bearing rotates at a high speed driven by the rotor. Although it does not bear load, it still generates a certain amount of heat. ...

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Abstract

The invention discloses a method for real-time compensation of the disturbance force suffered by the rotor in a magnetic suspension bearing system, which belongs to the technical field of numerical control machine tools, and includes setting an online rotor vibration acceleration detection device on the rotor of the magnetic suspension bearing system, establishing a disturbance force online compensation control module, Obtaining the displacement data collected by the displacement sensor and the vibration acceleration data collected by the acceleration sensor solves the technical problem of accurately detecting the real-time vibration acceleration of the rotor, compensating the disturbance force quickly in real time, and reducing the influence of the external disturbance force on the vibration displacement of the rotor , the present invention can stably and real-time compensate the unbalanced centrifugal force of the rotor, eliminate the influence of the unbalanced force on the vibration displacement of the rotor, and improve the position control accuracy of the rotor. Select an appropriate control strategy to quickly suppress rotor vibration and achieve rapid resuspension without reducing the rotor speed.

Description

technical field [0001] The invention belongs to the technical field of numerically controlled machine tools, and relates to a method for real-time compensation of disturbance force suffered by a rotor in a magnetic suspension bearing system. Background technique [0002] Magnetic suspension bearings are a new type of bearings that use electromagnetic force to achieve non-contact, and are often used in applications with high rotor speeds. At present, the magnetic suspension bearing control system basically adopts the control strategy based on the rotor vibration displacement error, that is, the displacement sensor is used to detect the real-time vibration displacement of the rotor, and the displacement error is obtained by comparing with the reference displacement, and then through the controller, power amplifier, magnetic bearing stator A corresponding electromagnetic force is generated to eliminate displacement errors. [0003] In the current control strategy, when the hig...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C32/04
CPCF16C32/044F16C32/0444
Inventor 朱益利于建英李渊
Owner CHANGZHOU INST OF TECH
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