The fusion belief function assignment is gotten by using D-S rule and fuzzy logic theory, and fault component is found.

再利用D - S联合规则结合模糊逻辑理论，得到融合后的信度函数分配，从而确定故障元件。

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For the sake of better carrying on fault detection and diagnosis, introduced the theory of principal component analysis (PCA) and the mechanism and strategy based on PCA for the fault of process.

为了更好的进行故障检测与诊断，介绍了主元分析(PCA)理论，给出了基于主元分析的过程故障辨识机理及策略。

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In this paper, the principle component analysis (PCA) theory is introduced, and the theory is used for fault diagnosis of lock of actuator.

文中介绍了主元分析算法以及在故障检测方面的应用。

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