(1)按残差方差定阶，(2) AIC准则，(3)按残差白色定阶，(4)零点—极点消去检验定阶，(5)利用行列式比定阶，(6)利用Hankel矩阵定阶。课件为学习系统模型定阶的方法，希望对大家有用。-(1) the residual variance given order, (2) the AIC criteria, (3) order determination of residual white, (4) Zero- Pole to eliminate test order determination, (5) use of a determinant than the fixed-order, (6)Hankel matrix order determination. Courseware for learning the method of the system model order and the hope that useful.