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本人收集到的一些二阶锥优化和凸优化的资料，拿出来共享给大家，希望有用！(I collected some of the second-order cone optimization and convex optimization information out for everyone to share the hope that useful!)

文档主要是对有限元方法的理论讲解，作者为李开泰(The document is mainly about the theoretical explanation of finite element method. The author is Kaitai Li.)

C语言单片机入门教程 KEIL C 52RD芯片 零基础入学者最佳教程(C Language Tutorial Singlechip KEIL C52RD zero chips are the best basis for school curricula)

该控制器输出部分的比例因子可以根据转矩的变化趋势经自适应机构的模糊规则库在线调整,不仅可以使永磁同步电机直接转矩控制系统保持恒定的开关频率,而且可以有效地减小磁链和转矩脉动,特别是低速时的转矩脉动。仿真验证了自适应模糊永磁同步电机直接转矩控制策略的有效性。 (The output of the controller part of the scale factor by the adaptive mechanism of the fuzzy rules according to the torque trend library online adjustments, not only can make a permanent magnet synchronous motor direct torque control system to maintain a constant switching frequency, and can effectively reduce theflux and torque ripple, especially at low speed torque ripple.The simulation results show the effectiveness of adaptive fuzzy permanent magnet synchronous motor direct torque control strategy.)

Electricity produced by renewable energy sources in the EU-15 countries amounted to 363 TWhin 2002, corresponding to a share of 13.4 of gross electricity consumption. The relevant figures for the EU-10 are 17.7 TWhand 5.6 , respectively.

金风科技的DFIG相关培训材料，准备投身新能源行业的同学可以参考一下(DFIG related training materials Goldwind, ready to join the new energy industry, the students can refer to)

说明：  文档主要是对有限元方法的理论讲解，作者为李开泰(The document is mainly about the theoretical explanation of finite element method. The author is Kaitai Li.)

IDW距离反比加权方法，现代信号处理中谱估计在matlab中的使用，music高阶谱分析算法。( IDW inverse distance weighting method, Modern signal processing used in the spectral estimation in matlab, music higher order spectral analysis algorithm.)

用UML来设计数据库，非常常实用非常不错的，我非常喜欢它 (UML to design database, very often practical, very good, I like it very much.)

说明：  实用LabVIEW软件 实现短时傅里叶变换。实现对数据的时频分析-La(LabVIEW software utility short time Fourier transform. To achieve time-frequency analysis of the data-La)