Method for extracting road surface characteristic parameters based on modern time series of vertical dynamic load

A technology of time series and characteristic parameters, applied in measurement devices, instruments, etc., can solve the problems of rough detection and high cost, and achieve the effect of improving detection level, low cost and good real-time performance.
CN102721397AInactive Publication Date: 2012-10-10JIANGSU UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGSU UNIV OF SCI & TECH
Publication Date
2012-10-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for extracting road surface characteristic parameters based on modern time series of vertical dynamic load. Firstly, a road spectrum signal is collected by a wheel force sensor; the signal is pretreated; an auto-regressive (AR) model is established; self-adaptive Kalman filtering is performed by a state-space model to further extract more real parameters; finally, the parameters are selected and confirmed by fuzzy clustering analysis to obtain the result to judge the road identification information. The method has the beneficial effects of high automation degree, good instantaneity, accurate measurement, low cost and positive influence on improving measurement level of road quality and construction of high-quality road and reducing domestic and overseas difference.
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Description

technical field

[0001] The invention belongs to the field of road surface feature recognition, and in particular relates to a method for extracting road surface feature recognition parameters based on modern time series analysis of wheel vertical dynamic loads. Background technique

[0002] With the continuous improvement of the quality of highway construction in our country and the improvement of the high-grade highway network, how to test and evaluate the quality of the road surface is a very important topic at present. Among the evaluation indicators of many inspection items on the pavement, the flatness accounts for 15% to 20% of the total score of the evaluation items, and is one of the most important indicators in the quality inspection of the pavement. In the "Highway Engineering Quality Inspection and Evaluation Standard" (JTJ071-94), which was implemented on October 1, 1994, my country put forward clear requirements for the flatness index. Under the conditions of s...

Claims

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