Current frequency converter test method based on virtual instrument

A technology of current frequency and test method, which is applied in the direction of analog/digital conversion calibration/test, etc., can solve the problems of long test time and poor synchronization of data processing, etc., and achieve the effect of simple operation, high degree of automation and fast test speed

Inactive Publication Date: 2014-01-22
SUZHOU R&D CENT OF NO 214 RES INST OF CHINA NORTH IND GRP
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a cumbersome test process makes it take more than ten minutes to test a current-frequency converter, the test time is long, and the synchronization of data processing is poor

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
  • Current frequency converter test method based on virtual instrument
  • Current frequency converter test method based on virtual instrument
  • Current frequency converter test method based on virtual instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0042] The test system includes software part and hardware part. The software part is an application software designed based on the Labview8.6 virtual instrument software development platform. The software runs under Windows XP. Through the design of a friendly human-computer interaction interface, it is responsible for sending various signals, operating instructions, receiving and processing data, Display the signal waveform to realize the automatic test of the current-frequency converter. The hardware part mainly includes computer, PXI card instrument, interface adapter, such as figure 1 shown. The PXI card instrument communicates with the computer through the PXI bus. The interface adapte...

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 a current frequency converter test method based on a virtual instrument. The method comprises the steps as follows: a programmable current source is subjected to initial setting, then the programmable current source is started to output electric currents, and a digital multi-meter is used for measuring the size of an input current after a setting time is delayed; a counter is started for measuring the frequency, and an impulse at one end of an output signal FO- and one end of an output signal FO+ is counted; after the frequency is measured, a current/frequency point is obtained, the size of the input current is changed, a next current/frequency point is measured, and so on; after all the current/frequency points required to be measured are measured, a current value is taken as a horizontal variable Xi, a frequency value is taken as a longitudinal variable Yi, the linearity is calculated with a least square method, and a current frequency converter with a linearity test result smaller than 0.03 is qualified. According to the method, the measurement speed is high, complex analysis and calculation can be performed in real time, and a test conclusion is obtained rapidly; and the test accuracy is high, and the test process is simple.

Description

[0001] technical field [0002] The invention relates to a testing method for a current-frequency converter, in particular to a testing method for a current-frequency converter based on a virtual instrument. Background technique [0003] A virtual instrument is a new type of high-end and low-cost instrument that uses the existing computer, plus specially designed instrument hardware and special software to form both the basic functions of ordinary instruments and special functions that ordinary instruments do not have. It uses the computer's powerful graphic environment and online help function to build a virtual instrument panel to replace traditional instruments to complete instrument control, data analysis and display functions. Virtual instruments organically integrate the hardware resources of the computer and the hardware resources of the instrument through software, give full play to the powerful computing and processing capabilities of the computer and the measuremen...

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): H03M1/10
Inventor 李贵娇鲁争艳张宪起李金宝杨侃
Owner SUZHOU R&D CENT OF NO 214 RES INST OF CHINA NORTH IND GRP
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
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap