| 基于AR模型的路面不平度激励模拟 |
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| 引用本文： | 陈龙,孙广田,江浩斌. 基于AR模型的路面不平度激励模拟[J]. 农机化研究, 2007, 0(12): 27-29,35 |
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| 作者姓名： | 陈龙 孙广田 江浩斌 |
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| 作者单位： | 江苏大学,汽车与交通工程学院,江苏,镇江,212013 |
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| 摘 要： | 基于GB7031《车辆振动-路面平度表示》中提出的路面功率谱密度表达式,建立了随机信号AR(自回归)模型,应用Matlab仿真软件对路面不平度随机序列进行了仿真分析,分析了路面不平度AR模型的采样间隔和模型阶数对模拟精度的影响,并对模拟值与理论值进行了比较.结果表明,AR模型拟合的路面不平度功率谱密度能较好地逼近其理论值,具有计算量小和模拟精度高的优点,为车辆动态性能模拟与控制研究奠定了基础.
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| 关 键 词： | 公路运输 路面不平度 仿真分析 路面谱 AR模型 模型 路面不平度 激励 性能模拟 AR Model Based Road Roughness 控制研究 车辆动态 计算量 逼近 拟合 结果 比较 理论值 影响 模拟精度 阶数 采样间隔 仿真分析 |
| 文章编号： | 1003-188X（2007）12-0027-03 |
| 收稿时间： | 2007-03-09 |
| 修稿时间： | 2007-03-09 |
Study for Road Roughness Based on AR Model |
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| CHEN Long,SUN Guang-tian,JIANG Hao-bin. Study for Road Roughness Based on AR Model[J]. Journal of Agricultural Mechanization Research, 2007, 0(12): 27-29,35 |
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| Authors: | CHEN Long SUN Guang-tian JIANG Hao-bin |
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| Affiliation: | School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013,China |
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| Abstract: | Based on the road surface spectrum mentioned by GB7031-86,it is proposed a AR model(autoregressive) to simulate random sequence of the road roughness,and the simulation is conducted by using Matlab.It analyses the influence from interval of sample and model steps to imitating precision,and has compared simulation value with theory value.The results indicate that the PSD of reconstituted roughness of road by AR model is the same as the given,and it also shows that the calculation amount and the error is smaller.The studies establish a foundation for vehicle dynamic performance simulation and control. |
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| Keywords: | highroad conveyance roughness of road surface simulation and analysis road surface spectrum AR model |
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