Order sudden peak magnitude-based method for quantitatively evaluating whistler-type noise of AT transmission gear

A technology for quantitative evaluation of transmission gears, applied to the measurement of ultrasonic/sonic/infrasonic waves, instruments, measuring devices, etc., which can solve problems such as difficulty in setting goals in the early stage and misjudgment in evaluation
CN106959159AInactive Publication Date: 2017-07-18CHONGQING CHANGAN AUTOMOBILE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING CHANGAN AUTOMOBILE CO LTD
Publication Date
2017-07-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an order sudden peak magnitude-based method for quantitatively evaluating whistler-type noise of an AT transmission gear. According to the method, the fact that the subjective evaluation sensitiveness of human on the whistler-type noise is not only greatly affected by the magnitude of whistler, but also closely related to background noise according to analysis on the whistler-type noise spectrum of an AT vehicle transmission and the research on sound mask effect, so that the method is proposed. The method quantitatively evaluates the whistler level of a gear through the difference value between the order noise of the AT transmission gear and the background noise, and can objectively and accurately reflect the evaluation acceptability to the whistler-type noise of the AT transmission gear by a user. The scheme solves the problems of evaluation misjudgment caused by the individual difference of evaluating personnel and difficulty in setting of an early-stage target in subjective evaluation.
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Description

technical field

[0001] The invention belongs to the field of automobile NVH (Noise Vibration Harshness, noise vibration and harshness), in particular to a method for quantitatively evaluating the whistling noise of AT transmission gears based on order spikes. Background technique

[0002] Car users not only require low noise in cars, but also increasingly pursue sound quality. The sound pressure level of car interior noise can no longer reflect the quality of car comfort, and the sound quality of car interior noise is becoming more and more important. , The howling noise of the transmission system gear of the AT transmission has a very significant impact on the sound quality in the car. At present, there is no good objective evaluation index for the evaluation of AT transmission gear whine noise, so people usually use subjective evaluation to determine the severity of whine noise qualitatively, but everyone feels differently about the sound. Different people may get differe...

Claims

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