基于特种车辆摆臂实测载荷的参数估计拟合外推研究  

Parameter estimation fitting extrapolation based on the measured load of special vehicle swing arm

作　　者：王枫 王玺[2] 邓克军[2] 范慧 仲健林 熊明皓 周超 WANG Feng;WANG Xi;DENG Kejun;FAN Hui;ZHONG Jianlin;XIONG Minghao;ZHOU Chao(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Beijing Institute of Space Launch Technology,Beijing 100076,China;Nanjing Chenguang Group Co.,Ltd.,Nanjing 210006,China)

机构地区：[1]南京理工大学机械工程学院,南京210094 [2]北京航天发射技术研究所,北京100076 [3]南京晨光集团有限责任公司,南京210006

出　　处：《重庆理工大学学报（自然科学）》2024年第7期44-49,共6页Journal of Chongqing University of Technology：Natural Science

基　　金：国防基础科研基金项目(6142604220102)。

摘　　要：以特种车辆摆臂实测载荷数据为依据,对实测信号进行编制得到了实摆臂的二维载荷谱,并对其进行了参数估计的拟合外推分析,确定了幅值和频次关系服从威布尔分布优于对数正态分布,均值和频次关系服从正态分布,并将外推后的结果与实测信号进行对比验证。结果表明:参数估计拟合外推的结果在合理误差范围内;预测的极值和频次更接近于实测值,初步验证了参数估计拟合外推方法在特种车辆领域应用的合理性。Based on the measured load data of the swing arm of special vehicle,the two-dimensional load spectrum of the real swing arm is obtained by compiling the measured signals.The fitting extrapolation analysis of parameter estimation is conducted on the load spectrum of the measured special vehicle swing arm,confirming the amplitude-frequency follows Weibull distribution rather than lognormal distribution,and the mean-frequency follows positive distribution.Compared with the measured signals,our study shows the fitting extrapolation results of parameter estimation are within a reasonable error range.The predicted extreme value and frequency are closer to the measured values,validating the huge potential of the parameter estimation extrapolation method on special vehicles.

关 键 词：特种车辆 载荷谱编制 参数估计外推 分布拟合 

分 类 号：U467.3[机械工程—车辆工程]