本文对具有任意维数输入输出的多变量系统,提出了在线修正加权多项式矩阵和输出最优预测两种最小方差自校正控制算法.这两种自校正算法中,参数辨识均采用隐式步骤,参数估计数目较少.控制器闭环稳定性分析表明所述算法能适用于非最小相位系统.仿真结果验证了此算法的有效性. In this paper, we present two kinds of minimum variance self-tuning control algorithms for on-line correction weighting polynomial matrix and output forecasting for multivariable systems with arbitrary dimension inputs and outputs. Both of these self-tuning algorithms use implicit steps, The closed loop stability analysis of the controller shows that the proposed algorithm can be applied to the non-minimum phase system.The simulation results verify the effectiveness of the proposed algorithm.