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Fast block-sparse decomposition based on SL0
, Article Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 27 September 2010 through 30 September 2010 ; Volume 6365 LNCS , September , 2010 , Pages 426-433 ; 03029743 (ISSN) ; 9783642159947 (ISBN) ; Babaie Zadeh, M ; Jutten, C ; Sharif University of Technology
2010
Abstract
In this paper we present a new algorithm based on Smoothed ℓ0 (SL0), called Block SL0 (BSL0), for Under-determined Systems of Linear Equations (USLE) in which the nonzero elements of the unknown vector occur in clusters. Contrary to the previous algorithms such as Block Orthogonal Matching Pursuit (BOMP) and mixed ℓ2/ℓ1 norm, our approach provides a fast algorithm, while providing the same (or better) accuracy. Moreover, we will see experimentally that BSL0 has better performance than SL0, BOMP and mixed ℓ2/ℓ1 norm when the number of nonzero elements of the source vector approaches the upper bound of uniqueness theorem
Approach for analytical modelling of axial-flux PM machines
, Article IET Electric Power Applications ; Volume 10, Issue 6 , 2016 , Pages 441-450 ; 17518660 (ISSN) ; Abedini Mohammadi, A ; Oraee, A ; Oraee, H ; Sharif University of Technology
Institution of Engineering and Technology
2016
Abstract
In the presented paper, an analytical model is developed for calculation of the air gap magnetic flux density in the axial-flux surface-mounted PM machines. The slotting effect is taken into account in the air gap magnetic flux distribution, accurately. The main novelty of this study is replacing the stator teeth by some surface currents at the border of the removed stator teeth. The uniqueness theorem is applied to find the surface currents. The two-dimensional (2D) field solution in the slotless machine is solved easily by separation of variables method. The multi-slice quasi-3D method is applied for taking 3D nature of field distribution into account. In addition, the back-EMF, armature...