一前言在仿真试验中,为了模拟自然界的随机扰动信号,以往使用的是所谓“自然”噪音源。使用这种“自然”噪音源有严重缺陷,主要是: 1 噪音信号本身就存在不稳定牲问题。这种不稳定牲将引起试验的统计方差,特别是被激励系统在试验过程中改变参数时,就分不清是系统参数变化引起的还是噪音本身的不稳定性所造成的。由于信号本身的不稳定性,在试验时,为了得到较高的置信度,就需 A Preface In the simulation experiments, so-called “natural” noise sources were used in the past to simulate random disturbance signals in nature. There are serious drawbacks to using this “natural” noise source, mainly as follows: 1. The noise signal itself has instability problems. Such instability will cause statistical variances in the test, especially when the stimulated system changes parameters during the test. This is caused by variations in system parameters or the instability of the noise itself. Due to the instability of the signal itself, in the test, in order to obtain a higher degree of confidence,