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Magnetic suspension motor vibration suppression method based on angular domain notch filtering

A vibration suppression and notch filter technology, which is applied in the fields of motor vibration suppression control, AC motor control, and general control strategies, can solve problems such as poor real-time performance and poor ability to adapt to speed changes, and achieve the effect of suppressing unbalanced vibrations

Active Publication Date: 2021-07-02
NORTHEASTERN UNIV
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  • Claims
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Problems solved by technology

However, the above methods can only be used at fixed speeds, or have complex adaptive algorithms, poor real-time performance, and poor ability to adapt to speed changes

Method used

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  • Magnetic suspension motor vibration suppression method based on angular domain notch filtering
  • Magnetic suspension motor vibration suppression method based on angular domain notch filtering
  • Magnetic suspension motor vibration suppression method based on angular domain notch filtering

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Embodiment Construction

[0023] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] A vibration suppression method for magnetic levitation motors based on angle-domain notch filtering, such as figure 1 As shown, taking the single-degree-of-freedom magnetic suspension bearing system as an example, and regardless of the coupling between each degree of freedom, the vibration suppression method of the magnetic suspension motor based on the angular domain notch filter of the present invention is used to suppress the vibration of the magnetic suspension motor. Include the following steps:

[0025] Step 1: Detect the frequency of the magnetic levitation motor and the rotor displacement signal; the frequency signal is detected by the frequency converter, ...

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Abstract

The invention provides a magnetic suspension motor vibration suppression method based on angular domain notch filtering, and relates to the technical field of magnetic suspension motors. A magnetic suspension motor rotor displacement signal is detected by using an eddy current displacement sensor, an instantaneous frequency signal is output by using a frequency converter, and the rotor displacement signal and the instantaneous frequency signal are transmitted to a magnetic suspension motor vibration suppression controller. The magnetic suspension motor vibration suppression controller comprises a signal processing chip which is used for processing a vibration signal into an angular domain signal and then carrying out notch filtering on the angular domain signal, so that a magnetic suspension motor control machine generates a control signal, and an automatic balance mode or an unbalance compensation mode is constructed.

Description

technical field [0001] The invention relates to the technical field of magnetic levitation motors, in particular to a vibration suppression method for magnetic levitation motors based on angle-domain notch filtering. Background technique [0002] Magnetic levitation motor is a new type of motor that uses magnetic bearings to generate electromagnetic force to levitate the rotor of the motor, thereby achieving frictionless and ultra-high-speed operation of the rotor. Because the magnetic levitation motor has the advantages of long life, simple maintenance, no need for lubrication, and high efficiency, it can be widely used in flywheel energy storage, blower, compressor, aerospace, rail transit and other fields. However, the magnetic levitation motor has unbalanced vibration due to load influence, residual unbalanced mass, assembly error and other reasons. At present, the method of suppressing the unbalanced vibration of the magnetic levitation motor is mainly to extract the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P23/00H02P23/04H02P27/04H02N15/00
CPCH02P23/04H02P23/0004H02P27/04H02N15/00
Inventor 杨东升李志达张化光周博文马占超罗忠李广地高筱婷崔恩畅朱叶盛王昕邢文超
Owner NORTHEASTERN UNIV
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