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

Dynamic load analysis method of space mesh antenna based on electromechanical coupling model

A technology of electromechanical coupling and dynamic loading, which is applied in the direction of radio wave reflection/reradiation, radio wave measurement systems, instruments, etc., and can solve problems such as low vibration frequency, weak structural damping, and difficult to deal with the dynamic characteristics of space mesh antenna structures

Active Publication Date: 2020-03-17
XIDIAN UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method takes the array antenna as the object, and analyzes the influence of random vibration on the electrical performance of the array antenna; although this analysis method can provide reference for the space mesh antenna, due to the characteristics of the space mesh antenna, such as large span, light weight, and weak structural damping , so that the antenna system has unique structural dynamic characteristics such as low vibration frequency, dense modes, and structural nonlinearity. This method is difficult to predict the electrical performance changes of the spatial mesh antenna under dynamic loads.
Zhou Jinzhu, Song Liwei, etc. analyzed the influence of dynamic load on the structural-functional integration The influence of the electromechanical performance of the antenna, the analysis method is also difficult to deal with the unique structural dynamic characteristics of the space mesh antenna

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
  • Dynamic load analysis method of space mesh antenna based on electromechanical coupling model
  • Dynamic load analysis method of space mesh antenna based on electromechanical coupling model
  • Dynamic load analysis method of space mesh antenna based on electromechanical coupling model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] Attached below figure 1 , the specific embodiment of the present invention is described in further detail:

[0052] The invention provides a method for analyzing the dynamic load of a space mesh antenna based on an electromechanical coupling model, comprising the following steps:

[0053] Step 1. Input the geometric parameters, material parameters and electrical parameters of the spatial mesh antenna provided by the user; the geometric parameters include the aperture, focal length, offset distance, and the minimum distance between the front and rear mesh surfaces; the material parameters include the cable structure, truss structure and wire Material density, cross-sectional area, Young's modulus, and Poisson's ratio of the mesh structure; electrical parameters include operating wavelength, feed source parameters, feed source primary pattern, and electrical performance requirements, where electrical performance requirements include antenna gain, lobe Width, sidelobe lev...

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 electromechanical coupling model-based space net-shaped antenna power load analysis method. The method specifically comprises the steps of (1) inputting antenna geometrical parameter, material parameters and electrical parameters; (2) establishing an antenna structure finite element model; (3) performing antenna structure modal analysis; (4) outputting a modal matrix; (5) applying power load; (6) calculating modal coordinates; (7) calculating reflective surface node displacement; (8) calculating surface patch phase error; (9) calculating an antenna far-zone electric field by adopting an electromechanical coupling model; (10) determining whether electrical performance satisfies requirement or not; and (11) outputting an antenna structure design scheme, or (12) updating the antenna parameters and continuing to perform the step (1). By virtue of the electromechanical coupling model-based space net-shaped antenna power load analysis, the space net-shaped antenna electrical performance analysis and electromechanical integration optimization design can be guided under the effect of vibration load.

Description

technical field [0001] The invention belongs to the technical field of radar antennas, and in particular relates to a method for analyzing the dynamic load of a space mesh antenna based on an electromechanical coupling model in the field of radar antennas. Background technique [0002] Mesh antennas are gradually used in space antenna design due to their advantages of light weight and small folded volume. During the operation of the mesh antenna in orbit, it is periodically affected by dynamic loads such as space radiation heat and impact. The deformation of the antenna surface caused by the dynamic load has a great impact on the electrical performance of the antenna. The deformation of the antenna surface caused by the dynamic load will cause the vibration of the antenna structure, the decrease of the electrical performance gain, the increase of the side lobe level, and the tilt of the beam, which will seriously affect the working performance of the antenna. Different from...

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): G06F30/23G01S13/00
CPCG01S13/00G06F30/23
Inventor 张树新杜敬利张岳震段宝岩李鹏宋立伟张逸群杨东武
Owner XIDIAN 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