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

Method for time synchronization between free jet test measurement systems

A technology of time synchronization and measurement system, which is applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, vibration testing, etc. It can solve the problems of complex devices and high test costs, and achieve the effect of reducing complexity and test costs

Pending Publication Date: 2022-02-01
BEIJING RES INST OF MECHANICAL & ELECTRICAL TECH
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above analysis, the embodiment of the present invention aims to provide a method for time synchronization between free jet test measurement systems, which is used to solve the problem of complex devices and test costs caused by the need for each measurement system to collect time system commands in the existing time synchronization method. high problem

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
  • Method for time synchronization between free jet test measurement systems
  • Method for time synchronization between free jet test measurement systems
  • Method for time synchronization between free jet test measurement systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.

[0039] A specific embodiment of the present invention discloses a time synchronization method between free jet test measurement systems, such as image 3 As shown, the method includes the following steps:

[0040] S1. Arrange multiple vibration sensors and multiple noise sensors in the test piece, each vibration sensor is connected to a vibration measurement system, each noise sensor is connected to a noise measurement system, from multiple vibration measurement systems and multiple noise measurements Choose one of the systems to connect with the test bench controller;

[0041] S2. Perform a...

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 relates to a method for time synchronization between free jet test measurement systems, belongs to the field of aircraft vibration measurement, and solves the problems of system complexity and high cost caused by the fact that each measurement system needs to receive a timing instruction for time synchronization between the measurement systems in the prior art. The method comprises the steps of arranging a plurality of vibration sensors and a plurality of noise sensors in a test piece, wherein each vibration sensor is connected to a vibration measurement system, each noise sensor is connected to a noise measurement system, and any one of the measurement systems is selected to be connected with a test bed controller; carrying out a free jet test on the test piece, sending a timing system instruction by a controller, receiving the instruction by a measurement system connected with the controller, and determining a timing system zero point according to the instruction; acquiring a vibration measurement curve and a noise measurement curve of each measurement system; determining the moment corresponding to the first peak value in a test recovery stage in each curve; and performing time synchronization on the measurement systems according to the first peak moment of the test recovery stage of each measurement curve.

Description

technical field [0001] The invention belongs to the field of aircraft vibration measurement, and in particular relates to a time synchronization method among free jet flow test measurement systems. Background technique [0002] Since the free-jet test can simulate the state of the engine in the real flight environment on the ground, the flight power unit, air intake, etc. will be tested by the high-altitude simulated free-jet test of the engine. [0003] In the free jet test, the vibration and noise environment are generally measured. Both vibration and noise environments need to be measured with a high sampling rate. The amount of measurement data is large, and multiple measurement systems are often used. The measurement data is generally as follows: figure 1 and figure 2 As shown, in order to facilitate the analysis, it is necessary to analyze the data measured by each measurement system using a unified time coordinate. Generally, each measurement system is used to coll...

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): G01M7/02G01H17/00
CPCG01M7/02G01M7/025G01H17/00Y02T90/00
Inventor 庞勇张青虎
Owner BEIJING RES INST OF MECHANICAL & ELECTRICAL TECH
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