CAJ | 학술논문

提出基于分布式ICA-PCA( independent component analysis-principal component analysis)模型的工业过程故障监测方法，适合于复杂工业过程难以自动划分子块及过程数据存在非高斯信息的情况。首先，对过程数据进行PCA分解，并在PCA主成分不同的方向上构建不同的子块，把原始特征空间自动划分为不同子空间。然后，对各个子块采用ICA-PCA两步信息提取的策略，提取出高斯信息和非高斯信息，并构建新的统计量和统计限。最后，通过Tennessee Eastman(TE)过程的仿真实验，验证所提出故障监测模型的有效性和可行性。
제출기우분포식ICA-PCA( independent component analysis-principal component analysis)모형적공업과정고장감측방법，괄합우복잡공업과정난이자동화분자괴급과정수거존재비고사신식적정황。수선，대과정수거진행PCA분해，병재PCA주성분불동적방향상구건불동적자괴，파원시특정공간자동화분위불동자공간。연후，대각개자괴채용ICA-PCA량보신식제취적책략，제취출고사신식화비고사신식，병구건신적통계량화통계한。최후，통과Tennessee Eastman(TE)과정적방진실험，험증소제출고장감측모형적유효성화가행성。
A fault monitoring method based on distributed independent component analysis-principal component analysis (ICA-PCA) model is proposed, which is suitable for complex industrial process that cannot be divided into several sub-blocks through an automatic way and has non-Gaussian information. Firstly, an initial PCA decomposition is carried out upon the variables of the whole process. By constructing sub-blocks through different directions of PCA principal components, the original feature space can be automatically divided into several sub-feature spaces. In addition, a two step extractions of the ICA-PCA information are carried on upon all sub-blocks in order to extract both Gaussian and non-Gaussian information, establishing the new statistics and their statistic limits. Finally, the simulation of TE process shows that the proposed fault detection model is efficient and feasible.