A method for evaluating the closing sound quality of automobile door locks

Abstract

The invention relates to a method for evaluating the closing sound quality of an automobile door lock, which comprises the following steps: 1) simulating the collision process between a latch and a lock body in a vehicle in a semi-anechoic chamber environment, and collecting the door lock generated when the automobile door lock is closed The time-domain signal of the impact noise is recorded into an audio file and screened as a sound sample for evaluation and scoring; 2) Obtain the sample population P after the evaluators sorted the preference of each sound sample S, and the sample population P in the sample population P The sound samples are sorted and adjusted and misjudged data are eliminated; 3) According to the 7-level scoring method, the degree of sound quality difference between adjacent samples is scored, and normalized processing is performed to obtain the score of each sound sample by each evaluator, The average of the scores of each evaluator on the same sound sample is the final evaluation value of the door lock noise. Compared with the prior art, the present invention has the advantages of conformity to reality, accurate and fast sorting, improved reliability and fault tolerance rate, and high scoring accuracy.

Description

technical field [0001] The invention relates to the technical field of automobile performance testing and evaluation, in particular to a method for evaluating the closing sound quality of an automobile door lock. Background technique [0002] The door slamming sound is one of the focuses of car NVH. There are many factors that affect the door closing sound. The door lock is the part that directly acts on the impact force when the door is closed. Its role cannot be ignored. When the door seal is poor, the sound of the door lock closing can be clearly distinguished. The research found that the metallic sound and tremor when the door locks are locked seriously affect the passengers' riding experience. Therefore, many door lock suppliers have begun to invest in the research and development of the sound quality of the door locks. [0003] The quality of sound quality needs to be quantified through evaluation. At present, the evaluation of car sound quality in practical applicati...

AI Technical Summary

Problems solved by technology

[0004] Existing evaluation methods have shortcomings such as heavy workload and low accuracy of evaluation results when the sample size is large.

Many scholars have proposed some new evaluation methods for these problems, but it is also difficult to eliminate the contradiction between workload and accuracy, and it is also particularly difficult to insert new samples into the completed evaluation system, so the new evaluation method proposed has very important meaning

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