对于具有未建模动态 ηn 的系统 (1)和 (2 ) ,考虑了模型参考自适应控制问题 .利用有界的外部激励和随机变向截尾技术 ,我们给出了一种类似于 [1]的模糊参考自适应控制器的设计 .对于这种控制器 ,我们证明了闭环系统是全局稳定的 ,建模部分的参数估计是O(ε) ,且这种模型参考自适应控制器在limsupn→∞1n ∑ni=0(Am(z)yi+ 1-Bm(z)z i -Cm(z)wi+ 1) 2 ≤O(ε2 ) +γ2 b21意义下是次优的 ,而其他文献中用到的严正实条件减弱为稳定性条件 . For systems (1) and (2) with unmodeled dynamic ηn, the model reference adaptive control problem is considered. By using bounded external excitation and stochastic censoring technique, we give a method similar to [1 ] For this controller, we prove that the closed-loop system is globally stable, the parameter estimation of the modeling part is O (ε), and this model is based on the adaptive controller in limsupn → ∞1n Σni = 0 (Am (z) yi + 1-Bm (z) zi -Cm (z) wi + 1) 2 ≤O (ε2) + γ2 b21 is suboptimal, The strict conditions of real conditions weakened to stability conditions.