Research on HMM application for fault diagnosis ofwastewater treatment by biomembrance process
生物膜法污水处理故障诊断的HMM应用研究

In order to realize fault diagnosis of wastewater treatment by biomembrance process, this paper put forward the method of a expert system based on HMM, and adopted Baum-Welch to train HMM and researched the iterations, recognition rate and the way to combine with expert system. The results show iterations of all HMM converge within 30 and fault recognition rates all above 98%. So the expert system based on HMM for fault diagnosis of wastewater treatment by biomembrance process has good stability and high recognition rate, the structure of the expert system is simple and easy to realize.