摘要
针对模拟电路实际存在的多类故障问题,本文提出一种基于多核多分类相关向量机(Multi-kernel learning multiclass relevance vector machine, MKL-mRVM)的模拟电路故障诊断方法.所提方法能够在故障数据所在的原始特征空间上建立多个非线性核,在构建分类器的同时实现故障特征的约简;同时,基于贝叶斯框架的分类模型还能够给出诊断结果的后验概率.通过两个电路的诊断实验证明了所提方法的优越性和实用性.
Aimed at the problem of multi-class fault diagnosis in practical analog circuits, a new diagnostic method based on multi-kernel learning multiclass relevance vector machine(MKLmRVM) is proposed. The proposed method can build multikernels in the feature space where fault data are originally represented, which can realize the reduction of fault features during the modeling of classifier. In addition, the classifier based on Bayesian framework is able to output the posterior probability of diagnostic results. The fault diagnostic results of two circuits demonstrate the advantage and practicability of the proposed method.
引文
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