Firstly, average relative variance ( ARV ) is defined according to the value forecasted by ARMA model and the measured value by sensors, in term of which the fitness function for GA is established. 首先由ARMA模型的预测值与实测值定义平均相对变动值(Averagerelativevariance,ARV),并根据其建立遗传算法的适应度函数;
The operational variables include crystallization temperature, stirring speed, the concentration and flow rate of ammonium oxalate. State equations are the population balance equations and the mass balance equation. The outputs are average particle size and relative volume-based variance. 该模型中操作变量为结晶温度、搅拌速率、草酸铵的浓度与流速;状态方程为粒数衡算方程与物料衡算方程;输出为平均粒径与粒径相对体积方差。