基于核主成分空间支持向量机的过程监视方法

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为了有效改进支持向量机(SVM)在工业过程中的故障检测性能,提出一种基于核主成分空间支持向量机的过程监视方法.首先,运用核主成分分析方法(KPCA)处理数据,获取数据的核主成分,在核主成分空间计算Hotelling\'s T2统计量;然后,在T2统计量基础上加入时滞特性和时差特性,并将三者组合成增广矩阵,运用正常数据和故障数据的增广矩阵训练SVM模型;最后,运用SVM模型对测试数据进行分类,实现对故障的有效检测.将本研究方法应用于非线性数值例子和田纳西-伊斯曼工业过程中,与PCA、KPCA、传统的SVM和KPCA-LSSVM方法作比较,进一步验证了该方法的有效性.
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