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Pieces targets comparision of RBC components before and after leucocyte removal filter
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《中国输血杂志》 CAS CSCD 2001年第S1期342-,共1页
关键词 RBC Pieces targets comparision of RBC components before and after leucocyte removal filter
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A novel control scheme for simultaneous elimination of imbalance, disturbance and voltage harmonic in power systems
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作者 Javad Olamaei Farnoosh NarjabadiFam Amid Nazeri 《Journal of Central South University》 SCIE EI CAS 2014年第4期1368-1375,共8页
In recent years, the increasing application of nonlinear and unbalanced electronic equipment and large single phase loads have made voltage imbalance a serious problem in power distribution systems. A novel approach h... In recent years, the increasing application of nonlinear and unbalanced electronic equipment and large single phase loads have made voltage imbalance a serious problem in power distribution systems. A novel approach has been proposed to eliminate voltage imbalance and disturbances. The main strategy of this scheme is based on series active filter. By improving control circuit toward existing schemes and proposing a new strategy to control the voltage amplitude, simultaneous elimination of voltage imbalance, faults, voltage harmonics and also compensation of voltage drop in transmission lines become possible. Eventually, the voltage on the load side is a perfectly balanced three phase voltage with specific proper amplitude. The proposed scheme has been simulated in a test network and the results show high capability of this scheme for the complete elimination of imbalance without phase shift. 展开更多
关键词 power quality series active filter voltage imbalance voltage harmonic symmetrical components
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Intrinsic component filtering for fault diagnosis of rotating machinery 被引量:4
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作者 Zongzhen ZHANG Shunming LI +2 位作者 Jiantao LU Yu XIN Huijie MA 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2021年第1期397-409,共13页
Fault diagnosis of rotating machinery has always drawn wide attention.In this paper,Intrinsic Component Filtering(ICF),which achieves population sparsity and lifetime consistency using two constraints:l1=2 norm of col... Fault diagnosis of rotating machinery has always drawn wide attention.In this paper,Intrinsic Component Filtering(ICF),which achieves population sparsity and lifetime consistency using two constraints:l1=2 norm of column features and l3=2-norm of row features,is proposed for the machinery fault diagnosis.ICF can be used as a feature learning algorithm,and the learned features can be fed into the classification to achieve the automatic fault classification.ICF can also be used as a filter training method to extract and separate weak fault components from the noise signals without any prior experience.Simulated and experimental signals of bearing fault are used to validate the performance of ICF.The results confirm that ICF performs superior in three fault diagnosis fields including intelligent fault diagnosis,weak signature detection and compound fault separation. 展开更多
关键词 Compound fault separation Intelligent fault diagnosis Intrinsic component filtering Unsupervised learning Weak signature detection
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