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基于发动机机械故障的诊断特征提取算法的研究
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作者 王建萍 《科技传播》 2013年第4期61-61,72,共2页
当前,汽车成为人们最主要的交通工具,作为汽车最核心的部件发动机,其故障的诊断一直是维修人员的重点。传统的发动机机械故障都是依赖维修人员的个人工作经验进行的,这不符合当前现代技术发展的需要,所以利用诊断特征提取算法可以有效... 当前,汽车成为人们最主要的交通工具,作为汽车最核心的部件发动机,其故障的诊断一直是维修人员的重点。传统的发动机机械故障都是依赖维修人员的个人工作经验进行的,这不符合当前现代技术发展的需要,所以利用诊断特征提取算法可以有效地解决这一问题。本文首先描述诊断系统的工作原理,其次针对工作原理中的核心部分,即诊断特征提取算法进行分析。 展开更多
关键词 发动机 机械故障 诊断提取算法
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An Effective Diagnosis of Diabetic Retinopathy with Aid of Soft Computing Approaches
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作者 Nasr Y. Gharaibeh Abdullah A. Alshorman 《Journal of Energy and Power Engineering》 2016年第8期474-485,共12页
DR (diabetic retinopathy) is a most probable reason of blindness in adults, but the only remedy or escape from blindness is that we have to detect DR as early. Several automated screening techniques are used to dete... DR (diabetic retinopathy) is a most probable reason of blindness in adults, but the only remedy or escape from blindness is that we have to detect DR as early. Several automated screening techniques are used to detect individual lesions in the retina. Still it takes more dependency of time and experts. To overcome those problems and also automatically detect DR in easier and faster way, we took into soft computing approaches in our proposed work. Our proposed work will discuss several amounts of soft computing algorithms, it can detect DR features (landmark and retinal lesions) in an easy manner. Processes includes are: (1) Pre-processing; (2) Optic disc localization and segmentation; (3) Localization of fovea; (4) Blood vessel segmentation; (5) Feature extraction; (6) Feature selection; Finally (7) detection of diabetic retinopathy stages (mild, moderate, severe and PDR). Our experimental results based on Matlab simulation and it takes databases of STARE and DRIVE. Proposed effective soft computing approaches should improve the sensitivity, specificity and accuracy. 展开更多
关键词 Diabetic retinopathy soft computing MICROANEURYSM EXUDATES hemorrhage and blood vessel.
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