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非稳态过程故障诊断方法研究

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  • Key Words:化工非稳态过程;;动态时间规整;;故障诊断;;主元分析

  • Abstract:针对化工非稳态过程动态特性强、变化范围大等特点,结合动态时间规整(DTW)和主成分分析算法(PCA)提出了一个新的混合故障诊断方案。利用DTW除去非线性特性构建残差变量,然后利用稳态过程的故障诊断方法进行诊断,降低了诊断难度,并以青霉素发酵过程进行了验证。诊断结果表明,该诊断方案对非稳态过程有很好的诊断效果。

  • Volume:v.36;No.358

  • Issue:08

  • Translation or Not:no

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