Seat assembly road spectrum generation method and device

By collecting and processing the vibration information at the seat assembly, a seat assembly road spectrum database is generated, which solves the problem of missing seat assembly road spectrum acquisition and generation methods in the prior art, and improves the repeatability and consistency of the test results.

CN119643159APending Publication Date: 2025-03-18CHINA FAW CO LTD
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Patent Information

Application Number
CN202411588164.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-08
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The lack of effective methods for collecting and generating seat assembly road spectrum in the prior art, resulting in the iterative process of collecting vibration spectrums of the assembly bench test without process and standardization, which affects the repeatability and consistency of the evaluation and test results.

Method used

By acquiring the sample car parameters and setting the vehicle road test conditions, the vibration information at the seat assembly is collected, and the acquired vibration information is processed and Fourier transformed to generate a seat assembly road spectrum database.

Benefits of technology

The process and standardization of the iterative process of vibration spectrum acquisition of the assembly bench test is realized, which improves the repeatability and consistency of the evaluation and test results, and provides accurate support for the performance evaluation test of the seat assembly.

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Abstract

The invention discloses a seat assembly road spectrum generation method and device, and the method comprises the steps: obtaining a sample vehicle parameter, and setting a vehicle road surface driving test condition; vibration information at the seat assembly is collected based on the preset road condition, the preset speed and the preset time of driving of the test sample vehicle; performing data processing on the acquired vibration information to obtain effective data; according to the low-frequency vibration simulation requirement of the test bench, setting a sampling frequency, and re-sampling effective data to obtain a processed time domain signal; performing Fourier transform on the time domain signal to obtain a power spectrum frequency domain signal, and generating a seat assembly road spectrum database based on the power spectrum frequency domain signal; according to the method, the assembly bench test vibration spectrum collection iteration process is made to be streamlined and standardized, the repeatability and consistency of evaluation and test results are improved, support is provided for the performance evaluation test accuracy of the seat assembly, and the customer satisfaction is improved; through data acquisition, data interception, frequency setting and parameter optimization, road spectrum data time domain signals are converted into frequency domain signals which can be used by a seat rack, the road surface excitation state is perfectly restored, and the accuracy and timeliness of the test are improved.
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