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Method and device for optimal design of existing automobile tailgate electric support system

An optimized design and electric strut technology, applied in multi-objective optimization, computer-aided design, calculation, etc., can solve problems such as poor hovering performance

Active Publication Date: 2021-07-13
BEIJING SHUNHENGDA AUTOMOBILE COMPONENT MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a method and device for optimizing the design of the existing automobile tailgate electric brace system, which solves the ubiquitous problem of poor hovering performance of the automobile tailgate electric brace, and its technical scheme is as follows :

Method used

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  • Method and device for optimal design of existing automobile tailgate electric support system
  • Method and device for optimal design of existing automobile tailgate electric support system
  • Method and device for optimal design of existing automobile tailgate electric support system

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Experimental program
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Effect test

Embodiment approach

[0040] First select the car model and input the strut parameters. The parameters include the position information of the strut, the position information of the door hinge point, the position information of the door center of gravity, the position information of the door closing point, the position information of the door opening point, the spring parameters, the maximum rotation angle of the door and the weight of the tailgate; Parameters include spring wire diameter and spring outer diameter, establish a multi-body model of the electric strut, input the required average door closing force greater than the average door opening force a value; input the required spring maximum stress ratio; input the required top dead center door closing force and door opening The initial value of the force ratio b and the step size △b.

[0041] Next, the model iterative calculation: model analysis and calculation, first roughly adjust the spring preload to meet the value a; roughly adjust the sp...

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Abstract

The method and device provided by the present invention for optimizing the design of the existing automobile tailgate electric support rod system, the ratio b of the door closing force and the door opening force at the top dead center is used for optimal design as a variable. By selecting the vehicle model and inputting the parameters of the strut, the multibody model of the electric strut is established. Input the required average door closing force greater than the average door opening force a value, input the required spring maximum stress ratio, input the initial value of b and the step size △b. Carry out iterative calculation on the model, adjust the spring preload to meet the value of a; adjust the spring stiffness to meet the requirements of the value of b. Get the spring preload and spring stiffness under the condition of satisfying the values ​​of a and b. Check the spring and make corresponding judgments, whether the maximum working stress ratio meets the spring stress ratio requirement less than the requirement, and whether the minimum working length of the spring meets the requirement of greater than or equal to 1.1 times the spring pressure and length. The invention can quickly find the maximum b value that can meet the performance requirements of the strut under the existing automobile tailgate electric strut system. Get the best hover performance with this strut system.

Description

technical field [0001] The invention relates to a method for optimizing the design of automobile parts, in particular to a method and a device for optimizing the design of the electric support rod system of the tailgate of the automobile. Background technique [0002] With the promotion and application of automotive smart electronics, automotive electric tailgate stays are more and more widely used. In the past, electric tailgate stays were used in high-end cars, but now they are used in low-end and middle-end cars. The design of electric tailgate struts is getting more and more attention from the automotive industry. [0003] The electric tailgate strut is a mechatronic space mechanism, and its performance is affected by many factors, such as the position of the space installation point at both ends of the strut, the position of the tailgate hinge point, the weight of the tailgate and the position of the center of mass, and the position of the spring. The influence of fact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F30/15G06F119/14
CPCG06F30/15G06F30/17G06F2111/06G06F2119/06
Inventor 胡世根董军
Owner BEIJING SHUNHENGDA AUTOMOBILE COMPONENT MFG