Contactor attraction time qualification rate predicting method based on Monte Carlo simulation

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

Active Publication Date: 2013-09-11
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 time, 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 qualified rate of contactor pull-in time 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
  • Contactor attraction time qualification rate predicting method based on Monte Carlo simulation
  • Contactor attraction time qualification rate predicting method based on Monte Carlo simulation
  • Contactor attraction time qualification rate predicting method based on Monte Carlo simulation

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0039] Specific implementation mode one, see figure 1 This embodiment will be described. The method for predicting the qualified rate of contactor pull-in time based on Monte Carlo simulation described in this embodiment includes the following steps:

[0040] Step 1: Obtain the dimensional parameter design value, design parameter design value and adjustment parameter design value of the contactor and the tolerance range of each parameter according to the design file and process drawing. According to the central limit theorem of independent and identical distribution, use MATLAB to generate N groups of A combination of three types of parameters: size parameters, design parameters, and adjustment parameters that vary within the tolerance range and conform to the normal distribution, and the parameter N is an integer greater than or equal to 1000;

[0041] Step 2: Use the above N groups of three types of parameter combinations as the input parameters of the contactor pull-in time acqu...

specific Embodiment approach 2

[0046] Specific implementation mode two, see figure 2 This embodiment will be described. The difference between this embodiment and the method for predicting the qualified rate of contactor pick-up time based on Monte Carlo simulation described in the first embodiment is that the contactor pick-up time acquisition module is implemented by software technology. The process includes the following steps:

[0047] Step A: Set the initial characteristic parameters of the contactor model calculation parameters;

[0048] Step B: Calculate the current moment flux linkage from the coil voltage, current and flux linkage integral at the previous moment;

[0049] Step C: Obtain the coil current from the comparison table of coil flux and armature displacement;

[0050] Step D: Check the comparison table for the coil current and armature displacement obtained in step C to obtain the electromagnetic attraction;

[0051] Step E: Calculate the mechanical spring reaction force from the armature displac...

specific Embodiment approach 3

[0060] The difference between this embodiment and the method for predicting the qualified rate of contactor pull-in time based on Monte Carlo simulation described in this embodiment and the second embodiment is that the comparison table is the contactor's coil flux and the coil A two-dimensional table of current and armature displacement. The comparison table is obtained through the following steps:

[0061] 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;

[0062] Step I: Calculate and obtain the coil current, armature displacement, electromagnetic attraction and magnetic linkage of multiple sets of contactors according to the three-dimensional model of the electromagnetic mechanism through the software finite element software FLUX;

[0063] Step J: According to step I, obtain the coil current, armature displacement, electromagnetic attraction force and f...

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 contactor attraction time qualification rate predicting method based on Monte Carlo simulation, belongs to the technical field of contactor detection and solves the problem of high cost in designing and testing and long designing cycle caused by the fact that samples are needed to be processed and manufactured in a method for testing attraction time parameters in an existing contact designing process. The method includes determining designing values and upper and lower limits of three parameters having influences on attraction time according to a contactor designing file and generating N groups of parameter combinations by adopting an independent identically distributed central limit theorem and utilizing MATLAB; acquiring N groups of attraction time characteristic parameters according to the N groups of parameter combinations; acquiring distribution characteristics of the attraction time parameters; acquiring a contactor attraction time qualification rate of a contactor by utilizing a Simpson law according to the distribution characteristics and attraction time designing parameters of a contactor. The contactor attraction time qualification rate predicting method based on Monte Carlo simulation is suitable for predicating and analyzing the qualification rate of contactor attraction time in a designing link of the contactor so as to provide a basis for a designer of the contactor to correct designing parameters.

Description

Technical field [0001] The invention belongs to the field of contactors, and relates to a method for calculating a pass-in time qualification rate, specifically, a method for analyzing a pass-in time qualification rate of a contactor based on Monte Carlo simulation. Background technique [0002] The pull-in time is the most important basic parameter of the contactor, and it is an important factor in determining the on-off current capability of the contactor. The qualification of the contactor can be directly determined based on this parameter. Article 7.2.6 of "TB / T2767-2010 DC Contactor for Locomotives and Rolling Stock" clearly stipulates that "the manufacturer shall provide the contactor's pull-in time under the rated control power supply voltage and the nominal air pressure". However, in actual product development, due to the complexity of the actual mechanism, various parameters including size parameters, design parameters and adjustment parameters will have a certain impact...

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): G06F17/50
Inventor 杨文英周学周志凯彭飞冯小林翟国富
Owner HARBIN INST OF TECH
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