Method for real-time compensation for disturbance force on rotor in magnetic suspension bearing system

A technology of magnetic suspension bearing and real-time compensation, applied in the field of CNC machine tools

A technology of magnetic suspension bearing and real-time compensation, applied in the field of CNC machine tools

CN110848256AActive Publication Date: 2020-02-28CHANGZHOU INST OF TECH
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  • Method for real-time compensation for disturbance force on rotor in magnetic suspension bearing system
  • Method for real-time compensation for disturbance force on rotor in magnetic suspension bearing system
  • Method for real-time compensation for disturbance force on rotor in 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 for disturbance force on a rotor in a magnetic suspension bearing system, and belongs to the technical field of numerically-controlled machine tools. The method includes the steps of arranging rotor vibration acceleration on-line detection devices on the rotor of the magnetic suspension bearing system, establishing a disturbance force on-line compensation control module, and acquiring displacement data collected by displacement sensors and vibration acceleration data collected by acceleration sensors. The technical purposes of accurately detecting the real-time vibration acceleration of the rotor and rapidly compensating for interference force in real time to reduce the influence of external interference force on the vibration displacement of the rotor are achieved. By means of the method, unbalanced centrifugal force on the rotor can be stably compensated for in real time to eliminate the influence of unbalanced force on thevibration displacement of the rotor and improve the position control accuracy of the rotor. According to the method, after the magnetic suspension bearing system loses stability, a suitable control strategy can be selected based on rotor vibration displacement and acceleration signals to rapidly suppress rotor vibration, and rapid resuspension is achieved 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...

Claims

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Application Information

Patent Timeline
28 Feb 2020
Publication
CN110848256A
IPC
F16C32/04
CPC
F16C32/044; F16C32/0444
Inventors
朱益利; 于建英