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System and method for quantifying correlation between road surface profile and road noise

A road surface and correlation technology, which is applied in the traffic control system of road vehicles, traffic control system, measurement vibration, etc., can solve the problem that the road surface contour cannot be quantified or embodied, and the road surface contour and road noise cannot be expressed quantitatively Issues of relevance, substantial time and cost

Active Publication Date: 2014-10-15
HYUNDAI MOTOR CO LTD
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Problems solved by technology

[0004] This traditional method is based on pictures to roughly identify the roughness of the road surface, but cannot quantify or materialize the road surface profile, and thus cannot quantitatively express the correlation between the road surface profile and road noise
[0005] When required, a laser scanner or sheet can be used to measure the road surface profile, but this method requires a lot of time and cost due to the measurement of the road surface profile during the vehicle stop state, and may even be accompanied by danger

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  • System and method for quantifying correlation between road surface profile and road noise
  • System and method for quantifying correlation between road surface profile and road noise
  • System and method for quantifying correlation between road surface profile and road noise

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[0016] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

[0017] Such as figure 1 As shown, the system for quantifying the correlation between road surface profile and road noise according to the present invention may include a road surface profile measurement unit 10, a noise measurement unit 20, a vibration measurement unit 30, a global positioning system (GPS) receiver 40. An electronic control unit ...

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Abstract

A system and method quantifies correlation between a road surface profile and road noise. The profile and interior noise and a running speed of a vehicle are simultaneously measured in real time, and by using measurement information, correlation between the profile and the road noise is quantitatively objectified. The profile is measured in real time and, at the same time, interior noise and running speed are measured. Data of the profile is converted into a displacement-based signal using the running speed data. An error component corresponding to a distance frequency that cooperates with the profile is removed by using the measured running speed data. A mean profile depth (MPD) is calculated by using the profile data. Road noise is measured from the interior noise data. And MPD is matched with the road noise to generate a correlation graph.

Description

technical field [0001] The present disclosure relates to systems and methods for quantifying the correlation between road surface profile and road noise, and more particularly to systems and methods for quantifying the correlation between road surface profile and road noise as described below : On the real road on which the vehicle is driving, the road surface profile and interior noise are simultaneously measured in real time with the vehicle's driving speed, and by using the measurement information, the relationship between the road surface profile and road noise for the real road is quantitatively embodied Correlation. Background technique [0002] In general, among the noises generated during running of the vehicle, the noise generated by the contour of the road surface with an exciting force applied to the tires is called "road noise". [0003] In order to measure the road surface profile in terms of road noise, it is traditional to compare coins or common objects etc....

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/048
CPCG01H1/00
Inventor 曺基昌白泓善郑东旭尹东柱徐在俊尹基寿
Owner HYUNDAI MOTOR CO LTD
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