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Method for optimizing suspension positioning parameters

A technology of positioning parameters and parameter changes, applied in geometric CAD and other directions, can solve problems such as reducing vehicle handling performance and suspension deformation, and achieve the effect of improving driving comfort, precise and effective adjustment, and easy implementation

Pending Publication Date: 2020-06-05
开沃新能源汽车集团股份有限公司
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AI Technical Summary

Problems solved by technology

[0002] As we all know, due to different driving conditions, the tires of the car will jump accordingly. The tires are connected to the car body through the suspension, and the vibration amplitude of the tires will be transmitted to the suspension, which will cause deformation of the suspension for a long time and reduce the handling performance of the vehicle.

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  • Method for optimizing suspension positioning parameters
  • Method for optimizing suspension positioning parameters
  • Method for optimizing suspension positioning parameters

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Embodiment Construction

[0021] The present invention takes the double-wishbone suspension as an example, and optimizes its positioning parameters, including the following steps:

[0022] P1: Establish a car double-wishbone suspension system model based on ADAMS / Car, and obtain the relevant hard point coordinates;

[0023] P2: Carry out simulation analysis on the model to obtain the positioning parameter change curve, and judge whether optimization is needed according to the parameter change range;

[0024] P3: Optimize the positioning parameters that need to be optimized. This step is specifically subdivided into:

[0025] 001: Establish the objective function, the main equations are shown in formula (1) and formula (2):

[0026]

[0027] ω=1 / [Δf(A)] 2 …………………Formula (2)

[0028] In the formula: f(A) is the index tolerance value, A is the index tolerance of each wheel alignment parameter, a 1 、a 2 is the variation range of the design index of the positioning parameter;

[0029] 002: ADAMS / I...

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Abstract

The invention discloses a method for optimizing suspension positioning parameters, which is characterized by comprising the following steps of: P1, establishing an automobile double-wishbone suspension system model based on ADAMS / Car, and obtaining related hard point coordinates; p2, performing simulation analysis on the model to obtain a positioning parameter change curve, and judging whether optimization is needed or not according to a parameter change range; p3, optimizing the positioning parameters which need to be optimized; and P4, optimization verification: importing the adjusted hard point coordinates into a previously established model, and judging the rationality of the positioning parameters. According to the method for optimizing the suspension positioning parameters, the problems that an existing suspension design model is simple, the control effect is poor, and parameter optimization cannot be conducted on suspension positioning can be effectively solved, then the automobile running stability can be accurately and effectively adjusted, the driving comfort degree is improved, and the optimization method is simple in design and easy to implement.

Description

Technical field: [0001] The invention relates to a method for optimizing suspension positioning parameters, which belongs to the technical field of automobiles. Background technique: [0002] As we all know, due to different driving conditions, the tires of the car will jump accordingly. The tires are connected to the car body through the suspension, and the vibration amplitude of the tires will be transmitted to the suspension, which will cause deformation of the suspension for a long time and reduce the handling performance of the vehicle. [0003] Therefore, it is necessary to improve the prior art to solve the deficiencies of the prior art. Invention content: [0004] The present invention provides a method for optimizing suspension positioning parameters in order to solve the above-mentioned problems in the prior art. [0005] The technical solution adopted in the present invention includes: a method for optimizing suspension positioning parameters, comprising the fo...

Claims

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Application Information

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IPC IPC(8): G06F30/15
Inventor 许津
Owner 开沃新能源汽车集团股份有限公司
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