| 一种小功率开关稳压电源设计 |
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| 引用本文： | 马红梅,武艳,周东东.一种小功率开关稳压电源设计[J].南阳理工学院学报,2011(2):30-33. |
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| 作者姓名： | 马红梅 武艳 周东东 |
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| 作者单位： | 徐州九州职业技术学院机电工程系;洛阳师范学院物理与电子信息学院;63880部队 |
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| 摘 要： | 本文设计了一种以电流型PWM控制器5L0380为控制核心的单端反激式开关稳压电源。重点给出EMI滤波器、整流电路、变压器、控制电路、反馈电路的参数设计。实验结果表明，所制作的电源具有稳压性能优良、纹波小、电压调整率和负载调整率小等优点。
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| 关 键 词： | PWM EMI 变压器设计 5L0380 |
DESIGN OF SMALL POWER SWITCHING POWER SUPPLY |
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| MA Hong-mei,WU Yan,ZHOU Dong-dong.DESIGN OF SMALL POWER SWITCHING POWER SUPPLY[J].Journal of Nanyang Institute of Technology,2011(2):30-33. |
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| Authors: | MA Hong-mei WU Yan ZHOU Dong-dong |
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| Institution: | 1.Department of Mechanical and Electrical Engineering,Jiuzhou College of Vocation &Technology,Xuzhou 221140,China;2.College of Physics and Electric Information,Luoyang Normal University,Luoyang 471022,China;3.63880 Unit of PLA,Luoyang 471000,China) |
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| Abstract: | The parallel support vector machines based on GPU and MPI are neither effective for cloud computing environment. In this paper, a parallel support vector machines model was designed using multistage SVM, and the parallel sequential minimal optimization （SMO） was realized for cloud computing environment. The algorithm divides the large training data set into several small training set by mapreduce system, and develops multistage SVM using these small training set. Thus, the algorithm collects the training data nearby each SVM optimal hyperplanes to train another new SVM. Compared to standalone and traditional parallel algorithm, the algorithm gets better in comprehensive aspects such as time consumption and classification accuracy, which are showed by experiments. |
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| Keywords: | support vector machines SMO cloud computing MapReduce |
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