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

Monte Carlo simulation based method for predicting pass percent of pull-in voltages of contactors

A technology of Monte Carlo simulation and pull-in voltage, which is applied to instruments, electrical digital data processing, special data processing applications, etc., can solve the problems of high design and test costs, long design cycle, etc., to reduce test costs and improve reliability The effect of shortening the trial production cycle

Active Publication Date: 2013-08-07
HARBIN INST OF TECH +1
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that in the design process of the existing contactor, it is necessary to make a sample according to the design drawing to be able to test the parameters of the pull-in voltage, which has a long design cycle and high design and test costs due to processing and manufacturing samples. Problem, the present invention provides a method for predicting the pass rate of pull-in voltage of a contactor based on Monte Carlo simulation

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
  • Monte Carlo simulation based method for predicting pass percent of pull-in voltages of contactors
  • Monte Carlo simulation based method for predicting pass percent of pull-in voltages of contactors
  • Monte Carlo simulation based method for predicting pass percent of pull-in voltages of contactors

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0041] Specific implementation mode one, see figure 1 This embodiment will be described. A method for predicting the qualification rate of contactor pull-in voltage based on Monte Carlo simulation described in this embodiment, the method includes the following steps:

[0042] Step 1: According to the design documents and process drawings, obtain the design values ​​of size parameters, design values ​​of design parameters, design values ​​of adjustment parameters and the tolerance range of each parameter that affect the pull-in voltage of the contactor. According to the central limit of independent and identical distribution Theorem uses MATLAB to generate N groups of three types of parameter combinations that vary within the tolerance range and conform to the normal distribution: size parameters, design parameters, and adjustment parameters. The parameter N is an integer greater than or equal to 1000;

[0043]Step 2: Use the above N groups of three types of parameter combinat...

specific Embodiment approach 2

[0048] Specific implementation mode two, see figure 2 This embodiment will be described. The difference between this embodiment and the Monte Carlo simulation-based contactor pull-in voltage qualification rate prediction method described in the first embodiment is that the contactor pull-in voltage acquisition module is implemented by software technology, and the work of this module The process includes the following steps:

[0049] Step A, setting the calculation parameters of the contactor model and initializing the characteristic parameters;

[0050] Step B, calculating the flux linkage at the current moment from the integral of the coil voltage, current and flux linkage at the previous moment;

[0051] Step C, obtaining the coil current from the coil flux linkage and armature displacement look-up table;

[0052] Step D, the coil current and armature displacement obtained in step C are checked in the comparison table to obtain the electromagnetic attraction force;

[0...

specific Embodiment approach 3

[0064] Specific Embodiment 3. The difference between this embodiment and the Monte Carlo simulation-based method for predicting the qualified rate of contactor pull-in voltage described in Embodiment 2 is that the comparison table is the coil flux linkage of the contactor with respect to the coil A two-dimensional table of current and armature displacement, which is obtained by the following steps:

[0065] Step H, establish a three-dimensional model of the electromagnetic mechanism in the UG software according to the design drawing of the electromagnetic mechanism of the contactor;

[0066] Step 1, through the software finite element software FLUX, according to the three-dimensional model of the electromagnetic mechanism, calculate the coil current, armature displacement, electromagnetic attraction force and flux linkage of multiple groups of contactors;

[0067] Step J, according to step I, obtain the coil current, armature displacement, electromagnetic attraction force and ...

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 Monte Carlo simulation based method for predicting the pass percent of pull-in voltages of contactors and belongs to the technical field of contactor detection. The method solves the problems that methods for detecting pull-in voltage parameters during design of existing contactors are high in design and test cost and long in design period due to the fact that samples are required to be machined and manufactured. According to the method, three kinds of design values, upper limits and lower limits of parameters which affect pull-in voltages are determined according to design documents of contactors, and a matrix laboratory (MATLAB) is used for producing N groups of parameter combinations through an independent identically distributed central limit theorem; then N groups of pull-in voltage characteristic parameters are obtained according to N groups of parameter combinations; distribution characteristics of pull-in voltage parameters are obtained; and finally, the pass percent of pull-in voltages of contactors is obtained through a Simpson principle according to distribution characteristics and pull-in voltage design parameters. The method is applicable to prediction and analysis of the pass percent of pull-in voltages of contactors in the design link of contactors, so that bases are provided for correction of design parameters for designers of contactors.

Description

technical field [0001] The invention belongs to the field of contactors, and relates to a method for calculating the pass rate of pull-in voltage, in particular to a method for analyzing the pass rate of pull-in voltage of a contactor based on Monte Carlo simulation. Background technique [0002] The pull-in voltage is the most important basic parameter of the contactor, and it is an important factor to determine the on-off current capability of the contactor. It can be directly determined whether the contactor is qualified according to this parameter. Article 7.2.4 of "TB / T2767-2010 DC Contactors for Locomotives" clearly stipulates that "the minimum voltage value that the contactor can reliably pull in is the minimum pull-in voltage, which is the same as the ambient temperature and the control power supply voltage. The value related to the control air pressure. At this voltage, the contactor should be reliably closed, and the phenomenon of secondary closing and repeated clo...

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
IPC IPC(8): G06F17/50
Inventor 杨文英徐乐周志凯邹帆彭体康翟国富
Owner HARBIN INST OF 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