随机过程的统计分析是为了对随机现象进行统计判断、描述及预估。这些现象可以是对随机转向输入的车辆响应,或是由于道路激振而引起车辆内部的噪音、振动及零部件的应力应变。任何随机过程的基本特征主要用四种统计函数来描述,它们是:1.均方值2.概率密度函数3.相关函数4.功率谱密度函数这四种统计函数又可归入三个基本的领域,即幅值域、频率域和时间域。 Statistical analysis of random processes is to make statistical judgments, descriptions and estimates of stochastic phenomena. These phenomena can be a vehicle response to random steering inputs or noise, vibrations and stress-strain of components due to road excitation. The basic characteristics of any stochastic process are mainly described by four statistical functions: 1. Mean square value 2. Probability density function 3. Correlation function 4. Power spectral density function These four statistical functions can be classified into three basic The areas of amplitude, frequency and time domain.