用辅助变量法递推算法估计模型的参数.辅助变量估计是在模型误差为相关噪声的情况下通过引入辅助变量矩阵对线性最小二乘估计的一种改进。 -Recursive algorithm to estimate model parameters using instrumental variables method. Auxiliary variables is estimated that in the case of the model error is related to an improveme