The research results shown that: the model obtained could well describe the process of penicillin fermentation in fed batch, as the network architecture is 5 3 5 3 topology, learning step is 1, initial weight is 0.98 and convergence rule is 10 10 .

• 研究结果表明：当网络拓扑结构为5?3?5?3，步长为1、初始权值取0?98及收敛准则为10?10时，所得到的模型能够很好地描述青霉素补料分批培养过程