汽车制动间隙自调臂的分离间隙提取技术研究

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摘要基于线性Radon变换的图像投影方法，改善汽车自动调整臂性能测试仪对分离间隙的提取精度。由于工业领域广泛使用的梯度极值法等传统特征点提取方法对含噪密集的信号非常敏感，很难准确识别在线测试曲线的拐点，降低了曲线特征点的提取精度，增加了误判率。在分离间隙在线测试仪的应用中，基于线性Radon变换法的分离间隙提取技术，能大大改善分离间隙的获取精度和准确度。实验验证，线性Radon变换法的计算误差比梯度极值法的计算误差至少降低10倍，同时，该技术理论研究成果已在杭州沃镭科技有限公司成功推广使用。

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	江文松1
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	陆艺4

关键词 ：自调臂性能测试仪, 线性Radon变换, 分离间隙提取, 制动间隙自调臂

Abstract：We apply the linear Radon transformation to the separating clearance test system of automatic brake adjuster to get the separating clearance in this paper.The linear Radon transformation is widely used to extract inflection points of online test system, especially under the noise conditions. Traditional methods like the gradient maximum optimal method, widely used in industry areas. However, since they are sensitive to the noise signal, those traditional methods are hardly to identify the inflection points from the online test curve with noise signal. Compared with the linear Radon transformation, tradition methods have a less accuracy of inflection points extraction when applied in the online test system. The experimental results show that the computational error of the linear Radon transformation is over 10 times lower than the gradient maximum optimal method. In addition, the separation extractive technology has been successfully used in Hangzhou Wolei tech. Co., LTD.

Key words： the tester of automatic brake adjuster the linear Radon transformation the extraction of separating clearance automatic brake adjuster of vehicle

收稿日期: 2014-01-27 出版日期: 2015-06-15

引用本文:

江文松1,2，罗哉2，郭斌3，范伟军1，陆艺4. 汽车制动间隙自调臂的分离间隙提取技术研究[J]. 振动与冲击, 2015, 34(11): 58-62.
JIANG Wen-song1,2, LUO Zai2, GUO Bin3,FAN Wei-jun1,LU Yi4. The Separation Extractive Technology Research for Automatic Brake Adjuster . JOURNAL OF VIBRATION AND SHOCK, 2015, 34(11): 58-62.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I11/58

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