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

IF circuit test method and device and random signal generation method and device

A technology of random signal and generation method, which is applied in the direction of electronic circuit test, measuring device, vibration test, etc., and can solve the problems that the dynamic performance of IF circuit cannot be evaluated separately

Active Publication Date: 2022-04-12
HUNAN AEROSPACE ELECTROMECHANICAL EQUIP & SPECIAL MATERIAL INST
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to provide an IF circuit testing method and device and a random signal generation method and device for the problem that the dynamic performance of the IF circuit cannot be independently evaluated in the prior art

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
  • IF circuit test method and device and random signal generation method and device
  • IF circuit test method and device and random signal generation method and device
  • IF circuit test method and device and random signal generation method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings of the present application. Apparently, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0062] The invention provides an IF circuit testing method and device, and a random signal generating method and device. The random signal generating method includes the following steps: controlling the random vibration of the vibrating table according to the specified vibration spectrum, and collecting the voltage across the sampling resistor; using the i×N+1 to i×N+N sampling points to calculate the i-th signal spectrum; Compare the Q signal spectrum to obtain th...

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 provides an IF circuit testing method and device and a random signal generating method and device. The random signal generation method comprises the following steps: controlling a vibration table to vibrate randomly according to a specified vibration spectrum, and collecting voltages at two ends of a sampling resistor; the i * N + 1-th sampling point to the i * N + N-th sampling point are used for calculation to obtain the i-th signal frequency spectrum; comparing the Q signal frequency spectrums to obtain an accelerometer output current individual distribution spectral line under the vibration condition, selecting a plurality of accelerometers of the same type to repeat the operation, and synthesizing individual characteristics to obtain a typical distribution spectral line of the accelerometer of the type; selecting Pj frequency points in a frequency range by using a random function; generating Pj sinusoidal signals, wherein the amplitude of each sinusoidal signal does not exceed the amplitude limit of the frequency point corresponding to the typical distribution spectral line; superposing the Pj sinusoidal signals to obtain a jth sub-random signal of which the duration is Tj; and continuously splicing the J sub-random signals in a time domain to obtain a random digital signal, outputting the random digital signal, and converting the random digital signal into a current signal.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering application and is applied to the dynamic performance test and evaluation of an IF circuit in an acceleration measurement circuit in the field of inertial navigation. Background technique [0002] The IF circuit (that is, the current-frequency conversion circuit) has a high technical maturity and has the characteristics of high precision, high stability, and high reliability. It has long been an excellent solution for the acceleration measurement circuit of the inertial navigation system. With the continuous improvement of the precision requirements of the inertial navigation system, the requirements for the dynamic characteristics of the accelerometer channel are becoming more and more refined, so the requirements for the dynamic performance of the IF circuit are also continuously improved. [0003] Such as figure 1 As shown, in the prior art, the evaluation of the dynamic perform...

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): G01R31/28G01C21/16G01M7/02
Inventor 熊凯洲曹振兴李忠昊
Owner HUNAN AEROSPACE ELECTROMECHANICAL EQUIP & SPECIAL MATERIAL INST
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