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

Magnetic suspension flexible rotor stability control method based on optimal damping principle

A stable control method and flexible rotor technology, applied in adaptive control, general control system, control/regulation system, etc., can solve the problems of high controller order, complex algorithm, and excessive dependence on the accuracy of the system model.

Active Publication Date: 2020-10-20
BEIHANG UNIV
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art method has the following disadvantages: (1) usually the controller has a higher order and needs to build a state observer
(2) Too much dependence on the accuracy of the system model, and the algorithm is complex

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
  • Magnetic suspension flexible rotor stability control method based on optimal damping principle
  • Magnetic suspension flexible rotor stability control method based on optimal damping principle
  • Magnetic suspension flexible rotor stability control method based on optimal damping principle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0091] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0092] Take the 400kW maglev flexible rotor system as an example, such as figure 1 As shown, the system mainly includes (from left to right): balance plate, left radial displacement sensor, radial magnetic bearing (A), high-speed motor, rotor carbon fiber protection layer, radial magnetic bearing (B), right radial Displacement sensors, axial magnetic bearings and axial displacement sensors. Such as figure 2 As shown, the flexible rotor is regarded as an elastic system composed of a finite number of units whose mass is continuously distributed, and each mass unit is equivalent to a node along the axis, so that the entire rotor is equivalent to an elastic system composed of 88 nodes, The 88 equivalent nodes are divided into two parts according to the different force modes of the axial mass unit of the rotor: nodes at the magnetic bearing support and ...

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 invention discloses a magnetic suspension flexible rotor stability control method based on an optimal damping principle. The method comprises the following steps that firstly, a kinetic model of amagnetic levitation flexible rotor system is established through finite element analysis; unbalance response analysis is carried out on the model to obtain a transfer function of the flexible rotor system; the condition for a magnetic bearing control system to obtain the optimal damping at a first-order flexible mode is analyzed, and a phase compensation controller is designed to compensate the damping of the control system to the optimal value, thereby achieving the stability control of the flexible rotor system in the first-order flexible mode. Limited electromagnetic force of the magneticbearing can be fully utilized, and the method is particularly suitable for stability control over the magnetic suspension flexible rotor at the first-order critical rotating speed.

Description

technical field [0001] The invention relates to the technical field of magnetic levitation rotor control, in particular to a method for stabilizing a magnetic levitation flexible rotor based on an optimal damping principle, which is used for the stable control of a magnetic levitation flexible rotor system passing the first-order critical speed. Background technique [0002] The magnetic levitation rotor is an important part of the rotating machinery system. With the development of industry, there is a major demand for high efficiency and high energy density on the rotating machinery, which requires the magnetic levitation rotor to develop in the direction of thinner, longer, and higher speed. The rotor works at Above one or more critical speeds, the rotor becomes flexible, and the flexible rotor will resonate in the flex mode, which can easily cause the rotor to touch the protective bearing and cause the rotor to become unstable, which directly affects the life and work of t...

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 汤继强宁梦月孙津济郑世强余世城王浩安
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