摘  要：在Matlab环境中编制了以雨流计数法为理论基础的二维载荷谱程序，用以对混合动力电动车电机驱动系统载荷时间历程进行统计处理，得到载荷幅均值雨流矩阵，进行幅均值各自分布假设检验，以及独立性和相关性检验，获得二维联合分布概率密度函数，建立混合动力电动车电机驱动系统台架试验用二维载荷谱。
关键词：混合动力；电机驱动系统；载荷谱；Matlab

Abstract: A two-dimensional load spectrum program based on rain-flow counting method was compiled in Matlab environment.The program is used in statistical treatment of load time history of motor propulsion system on hybrid electric vehicle(HEV)and getting rainflow matrix,and also in hypothesis test for both amplitude and mean value distribution.Two-dimensional distribution function was obtained after the independence and relevance tests of the amplitude and mean value,set up two-dimensional load spectrum for traction motor propulsion system on HEV.
Key Words: Hybrid electric vehicle;Motor propulsion system;Load spectrum;Matlab