Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Complex coefficient method-based magnetic suspension flat rotor system nutation frequency analysis method

A technology of magnetic suspension rotor and analytical method, applied in the field of magnetic suspension flat rotor system control, can solve the problem of lack of in-depth research on quantitative analysis of nutation frequency, and achieve the effects of improving pertinence and efficiency, easy implementation and simple calculation.

Active Publication Date: 2018-03-13
BEIHANG UNIV
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, research at home and abroad is mainly aimed at the qualitative analysis of the nutation mode, but there is a lack of in-depth research on the quantitative analysis of the nutation frequency of the high-speed rotor system with strong gyro effect under the condition of closed-loop control

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Complex coefficient method-based magnetic suspension flat rotor system nutation frequency analysis method
  • Complex coefficient method-based magnetic suspension flat rotor system nutation frequency analysis method
  • Complex coefficient method-based magnetic suspension flat rotor system nutation frequency analysis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0036] Such as Figure 1-3 As shown, the specific steps of the nutation frequency analysis method of a magnetic suspension flat rotor system based on the complex coefficient method of the present invention are as follows:

[0037] (1) such as Figure 1-2 As shown, the present invention analyzes the control torque generated by the magnetic bearing control force of each channel when the rotor is deflected around the x-axis and y-axis under the closed-loop control condition of the magnetic suspension flat rotor system, and establishes according to Euler kinematics equations Rotational dynamic model of high-speed magnetic suspension flat rotor:

[0038]

[0039] Where J x Is the moment of inertia in the x-axis direction, J y Is the moment of inertia in the y-axis direction, J z Is the moment of inertia in the z-axis direction, Ω is the speed, α is the deflection angl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a complex coefficient method-based magnetic suspension flat rotor system nutation frequency analysis method. The method comprises the steps of according to the Euler kinematical equations, and by modeling and analyzing the magnetic suspension flat rotor system rotational dynamics, establishing the relation between the control system parameters and the rotating speed and the rotational motion, utilizing a complex coefficient method to represent a two-degree of freedom rotational kinetic equation as a single degree of freedom complex variable equation, establishing a damping vibration frequency characteristic equation by the variable reconstruction, according to the characteristic that a nutation mode is homodromous with the rotor rotating speed, obtaining the analysis relation between the nutation frequency and the control system parameters and the rotating speed. The method is simple to calculate and easy to realize, can calculate the nutation mode frequency under the decentralized PID control more accurately, and enables the control pertinence and efficiency of the nutation mode to be improved.

Description

Technical field [0001] The invention relates to the technical field of magnetic suspension flat rotor system control, in particular to a nutation frequency analysis method of a magnetic suspension flat rotor system based on a complex coefficient method, which can be used for the nutation frequency analysis calculation of a magnetic suspension flat rotor system under decentralized PID control conditions. Background technique [0002] Magnetic bearing has many advantages such as no contact, no friction, no need for lubrication, long service life and so on. With the maturity of magnetic levitation control technology, it is widely used in magnetic levitation molecular pump, magnetic levitation energy storage flywheel, magnetic levitation control moment gyroscope, magnetic levitation high energy density Motors and other institutions. The magnetic bearing control system usually adopts decentralized PID control, but with the increase of the magnetic suspension rotor speed, the introduct...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 郑世强杨景裕周冲韩邦成刘刚
Owner BEIHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com