一、回归正交设计回归正交设计,就是把正交设计与回归分析有机地结合起来,在正交设计的基础上,进行回归分析,在给出的因素与指标之间,找出一个明确的函数表达式,建立生产过程的数学模型,以便定量地描述生产过程中各因素对指标所起的作用,并用该数学模型预测或控制生产。回归设计的特点是:能主动地把试验的安排、数 I. Regression Orthogonal Design Regression Orthogonal Design is to combine orthogonal design with regression analysis organically. On the basis of orthogonal design, regression analysis is carried out to find out a clear relationship between the given factors and the index , And establish the mathematical model of the production process in order to quantitatively describe the role of various factors in the production process on the indicator and use this mathematical model to predict or control the production. Regression design is characterized by: can take the initiative to put the experimental arrangements, the number