MOTOROLA MVME162-432 68040 CPU, 25MHZ, 8MB DRAM MEMORY,128KB SRAM, 1MB FLASH MEM　由传动系统测量到的信号具有较强的随机性，可利用信号来建立参数模型并加以研究即：认为被测信号7（0是由自噪声zu）激励某定系统所产生的，只要自噪声的功率及模型的参数已知，那么测量信号的研究就转为模型参数和性质的研究，传动系统的故障诊断就是使其机械结构同从机械本身测量到的信号成分发生联系来达到的在参数模型中，信号是由本身的若干次过去值和激励的现在值及若干次过去值；的线性组合产生回归（AR）模型的组合，取知=，=回归系数。参数模型本身就是种变换，它将观测到的数据转化为外维向量（ai，a2，…，Z.），其中回归系数（ai，<，…）充分反映了系统（被研究象）的这特点进行的。
数学模型应于系统某特定特性的模型参数ak来达到。设有m个参数模式Rt（k= ，2，…，m），模式的识别就是以系统现在的状态模式与模式进行比较，从而定其属于哪种模式以通过所采集的信号数据立得到iblishingHouse.Allrights当m=0时0时，由噪声与信号的不相关性，得到，这模式可以是系统的正常运行模式，也可以是故障模式。模式的建立可间的点）应当属于m个模的哪个，只要求出待判别的系统模式与m个模式间的距离，取其小者即可定待判别的系统模式的归属。
可用不同的方法来衡量ak与参数模式Rk之间的距离，主要的有欧氏距离法、加权距离法、分散度法等。
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