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

Uncertainty Inverse Calculation Method of Oil Film Force and Oil Film Characteristics of Rotor Bearing

A technology of uncertainty and oil film characteristics, used in mechanical bearing testing, force/torque/work measuring instruments, instruments, etc., can solve the difficulty of identifying oil film characteristic parameters, affect the stability and accuracy of oil film characteristic parameter identification, and not consider Rotor bearing system uncertainty factors and other issues, to achieve the effect of improving efficiency and saving measurement costs

Active Publication Date: 2019-09-13
湖大科瑞(江苏)检测技术有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional identification of oil film characteristic parameters does not consider the uncertain factors in the process of manufacturing, installation, service and measurement of the rotor bearing system, which will affect the stability and accuracy of the identification of oil film characteristic parameters
At the same time, the statistical characteristics of these uncertain factors also require a large amount of sample information, which brings more difficulties to the identification of oil film characteristic parameters under uncertain factors

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
  • Uncertainty Inverse Calculation Method of Oil Film Force and Oil Film Characteristics of Rotor Bearing
  • Uncertainty Inverse Calculation Method of Oil Film Force and Oil Film Characteristics of Rotor Bearing
  • Uncertainty Inverse Calculation Method of Oil Film Force and Oil Film Characteristics of Rotor Bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Taking the unbalance amount caused by assembly error or thermal deformation during operation as an example with a certain level of uncertainty, the inverse calculation of the oil film force and oil film characteristic parameters of the rotor bearing is performed to describe the specific implementation of the present invention in detail.

[0036] Step S101. According to the actual assembly error and the thermal deformation of the rotor bearing during operation, the uncertainty factors of the rotor unbalance are counted to obtain the upper and lower boundaries of the uncertainty parameters of the uncertainty factors. A schematic model of the rotor bearing system is shown in figure 2 As shown, three disks 2 and two bearings 3 are sleeved on the rotor 1, and the material density of the disk 2 is ρ=7.65×10 3 kg / m 3 , the unbalance is the eccentric mass of the middle disc 2, and the uncertain parameters are the eccentric mass m and the eccentric distance r. The upper and l...

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

PropertyMeasurementUnit
densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a reverse solution method of indeterminacy of oil film force and characteristics of a rotor bearing. The reverse solution method of the indeterminacy of the oil film force and the oil film characteristics of the rotor bearing includes steps: S101, collecting indeterminacy factors of the rotor bearing, and obtaining upper and lower boundaries of indeterminacy parameters brought by the indeterminacy factors; S102, using the oil film force for equalizing effect of oil film rigidity and damping characteristics on a bearing to a rotor; S103, converting an indeterminacy oil film force reverse solution problem into a reverse solution problem of the oil film force at an interval midpoint and a reverse solution problem of sensitivity of the oil film force related to the indeterminacy parameters by using an interval method; S104, measuring dynamic response of the rotor, and reversely solving the oil film force and the sensitivity of the oil film force related to the indeterminacy parameters; S105, calculating upper and lower boundaries of the oil film force, and evaluating influences of the indeterminacy factors on parameters of the oil film characteristics. The reverse solution method of the indeterminacy of the oil film force and the oil film characteristics of the rotor bearing can effectively measure the parameters of the oil film characteristics, and provides accurate data to analysis and design of the rotor bearing.

Description

technical field [0001] The invention belongs to the technical field of identification of oil film characteristics of rotor bearings, and in particular relates to an inverse method for calculating the uncertainty of oil film force and oil film characteristics of rotor bearings. Background technique [0002] Oil film characteristic parameters are important basic data for rotor bearing system analysis, and accurate acquisition of oil film characteristic parameters is of great significance for evaluating the design and service performance of rotor bearings. Due to the complexity of the structure and the difficulty of fluid-solid coupling analysis, it is difficult to solve the oil film properties from the perspective of theory or simulation. In addition, limited by technical conditions, it is difficult to obtain the stiffness and damping characteristics of the oil film through experimental tests. At present, the identification of oil film characteristic parameters by using measu...

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 Patents(China)
IPC IPC(8): G01M13/04G01L5/00
Inventor 刘杰
Owner 湖大科瑞(江苏)检测技术有限公司
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