A method for analyzing braking noise in automotive braking systems

By establishing a 1D model and 3D simulation analysis based on the rotational stiffness of the brake block, and combining it with actual experiments, the problems of low efficiency and high cost in brake noise analysis were solved, and efficient and accurate brake noise analysis was achieved.

CN116305981BActive Publication Date: 2026-05-26CHENZHI(CHONGQING)BRAKE SYSTEM CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHENZHI(CHONGQING)BRAKE SYSTEM CO LTD
Filing Date
2023-03-24
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing methods for analyzing braking noise in automotive braking systems are inefficient and costly, requiring the establishment of multiple test benches, which leads to long analysis times and high expenses.

Method used

A 1D model of an automotive braking system based on the rotational stiffness of the brake pads was established. By dividing the relative angular velocity range between the brake disc and the brake pads, a 3D simulation analysis model was created. The model was then corrected based on actual test results, and the complex eigenvalue analysis results of the braking noise were obtained.

Benefits of technology

It improves the efficiency and accuracy of brake noise analysis, enabling rapid and accurate identification of brake noise frequency and instability, while reducing analysis costs.

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Abstract

This invention relates to the field of automotive braking technology, and specifically to a method for analyzing braking noise in an automotive braking system. The method comprises the following steps: S1: Obtaining the rotational stiffness of the brake pads during braking; S2: Establishing a 1D model of the automotive braking system based on the rotational stiffness of the brake pads to obtain the relative angular velocity between the brake disc and brake pads during the complete braking process; S3: Dividing the relative angular velocity interval between the brake disc and brake pads during the complete braking process into n equal intervals; S4: Establishing a 3D analysis model of the automotive braking system's braking noise based on the stick-slip effect between the brake disc and brake pads, based on the interval division of the relative angular velocity; S5: Obtaining the results of the braking noise analysis of the automotive braking system based on the stick-slip effect between the brake disc and brake pads during the complete braking process; S6: Verifying and correcting the 1D model of the automotive braking system and the 3D simulation analysis model of the automotive braking system's braking noise based on actual experimental results.
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