摘要
本文利用“第五轮仪—加速度计”测试系统对林区运材公路(砂石路面)纵向不平度进行了研究,运用平稳随机过程理论对测量数据进行了定量的分析,估计了路面自功率谱密度,并给出了自功率谱密度的拟合指数、拟合系数等参数,揭示了东北林区运材道的主要特征。通过对测试系统动态特性、测试的可重复性及路面追随轮滤波效应的分析,对测试系统的精度和可靠性进行了论证。
The paper studied the roughness of haul road (sand-gravel road ) in vertical section by the Fifth Wheel-Accelerometer system .The test data obtained is quantitatively analyzed by the theory of stationary random process. The power spectral density of the road roughness is cstimated and paramctcrs such as fitting index and fitting cocfficient of the spectrum are calculated .It gave the main character of thc haul road in the northeastern forest region. The precision and reliability are expounded by analyzing the dynamic characteristic of measuring apparatus ,the measuring rcpeatability and the filtering crrors when the rolling wheel is used to follow a profile of rough ground during measurement.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1991年第5期45-50,共6页
Journal of Northeast Forestry University
关键词
林区
道路
不平度
功率谱
密度
Forest road
Roughness
Power spectral density
