Method for testing and evaluating sound quality of automobile electric device

Abstract

The invention discloses a method for testing and evaluating the sound quality of an automobile electric device. Aiming at representative noise characteristics including motor sound and friction soundof an electric device, influences of different acoustic parameters such as characteristic loudness, roughness and fluctuation on human ear hearing are analyzed, a development method and an evaluationmethod of the sound of the electric device are established, and a development process of automobile sound quality is perfected. The method comprises the following steps: subjectively evaluating the sound quality of an electric device in a whole vehicle state; carrying out objective test on the sound quality of the electric device in the whole vehicle state; selecting an objective evaluation parameter primary edition; carrying out final determination of sound quality objective evaluation parameters of the electric device; and determining subjective and objective evaluation targets of the soundquality of the electric device.

Description

technical field [0001] The invention relates to a method for testing and evaluating the sound quality of automobile electrical components, which is suitable for the sound quality design of automobile motors, and is also suitable for the sound quality design of small and medium-sized motor drive systems in other industries. Background technique [0002] With people's pursuit of higher quality cars and the requirements for car sound, the quality of car sound becomes more and more important. Sound quality includes not only the well-known decibel value, but more importantly, loudness and roughness related to human subjective hearing perception. [0003] Some basic configurations on the car, such as wipers, electric windows, etc., generally use the on-board 12V DC power supply to drive the motor to drive the actuator to run. With the continuous decline of car configurations, more and more household-level cars are equipped with electric sunroofs, electric seats, electric rearview...

AI Technical Summary

Problems solved by technology

The advantage is fast batching, but the disadvantage is also obvious, that is, only an objective value can be obtained, which is not highly related to the human ear's sense of hearing

The other is the test using an acoustic artificial head, which has the advantage of being professional and meticulous, and the indicators proposed are relatively close to the hearing sense of the human ear, but because of the variety of sound components involved, the applicability is not very wide

[0005] It can be seen that there is currently no sound quality development method that can combine subjective and objective evaluations in the sound quality development of electrical components in the vehicle state.

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