Automobile door lock locking sound quality evaluation method

Abstract

The invention relates to an automobile door lock locking sound quality evaluation method. The method comprises steps as follows: 1) the collision process of lock catches and locks in the whole automobile is simulated in the semi-anechoic room environment, time-domain signals of noise of door lock collision when the door locks of the automobile are locked are acquired, the signals are recorded intoaudio files, and the audio files are screened to serve as a sound sample for evaluation and scoring; 2) a sample population P obtained after evaluators perform preference sequencing on each sound sample S is obtained, and sound samples in the sample population are sequenced and adjusted to reject misjudgment data; and 3) sound quality distinguishing degrees of adjacent samples are scored according to a 7-grade scoring method, normalization processing is performed, score of each sound sample by each evaluator is acquired, scores of the same sound sample by different evaluators are averaged, and the final evaluation value of door lock noise is obtained. Compared with the prior art, the method has the advantages that actual demands are met, scoring are accurate and rapid, the reliability andthe error-tolerant rate can be increased, the score accuracy is high and the like.

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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