Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

An Active Control Method of Structural Vibration Based on Non-probability Interval Confidence Reliability

A technology of structural vibration and active control, applied in the direction of non-electric variable control, electric controller, mechanical oscillation control, etc., can solve uncertainty and low reliability, damage stability, and will not improve the effective performance of the active control system, etc. problem, to achieve the effect of accurate calculation results

Active Publication Date: 2022-04-12
BEIHANG UNIV
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although, for the traditional active vibration control system, it has the advantages of excellent effect in low frequency vibration and light weight required for operation, but its characteristics of low uncertainty and reliability cannot be ignored
But in practical applications, uncertainty will not only not improve the effective performance of the active control system, but also destroy its stability

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
  • An Active Control Method of Structural Vibration Based on Non-probability Interval Confidence Reliability
  • An Active Control Method of Structural Vibration Based on Non-probability Interval Confidence Reliability
  • An Active Control Method of Structural Vibration Based on Non-probability Interval Confidence Reliability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0212] During flight, especially at high speed and high altitude, the aircraft is easily subjected to vibration caused by airflow, which seriously affects the safety and service life of the aircraft. At the same time, because the structure of the aircraft is mainly flexible, with the continuous increase of the power of the aircraft power plant, the aircraft has experienced a relatively complex dynamic environment. As flexible accessories become larger and larger, the installation and use of lightweight flexible accessories will become a mainstream trend, and this change will bring about a very obvious change in characteristics. Due to the huge size of the light flexible, the proportion of the moment of inertia and mass in the whole system increases, making the impact of vibration on the system more obvious. The fundamental frequency of aircraft vibration caused by vibration is generally less than 2hz. At the same time, due to the small structural damping and long vibration att...

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 an active control method of structural vibration based on non-probability interval confidence reliability, wherein an automatically adjustable active vibration control system is designed, aiming at the uncertainty of structural parameters, in the original open-loop control system Based on the improvement, based on the calculation method of the dual reliability index of reliability and confidence, on the basis of the original basis, the research on the vibration suppression algorithm is carried out under the premise of the uncertainty of the structural parameters, and the confidence index is introduced to make the designed The self-adjusting active vibration control system can improve the reliability of the structure. The feasibility of the automatically adjustable active vibration control system proposed by the present invention is verified by using a continuous model and a discrete model, and this control method can be used in the design of active control systems of uncertain structures in the future.

Description

technical field [0001] The present invention relates to the field of active vibration control of structures, in particular to the calculation of double reliability indexes based on reliability and confidence by improving the original open-loop control system when considering the uncertainty of external force, material, voltage and other parameters Method, based on the original basis, the research on the vibration suppression algorithm under the premise of the uncertainty of the structural parameters is introduced, and the confidence index is introduced, so that the designed automatically adjustable active vibration control system can improve the reliability of the structure. Background technique [0002] In recent years, with the rapid development of aerospace industry such as Beidou navigation project and space station in the current era, different types of aircraft with different purposes have appeared; Require. [0003] Noise is a serious vibration source that cannot be ...

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): G05B13/04G05B11/42G05D19/02
CPCG05B13/042G05B11/42G05D19/02
Inventor 李云龙牛峥武鹏王磊王晓军邱志平
Owner BEIHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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