[MATLAB从入门到精通].周建兴.清晰版.pdf

PEMFC混合动力系统的DCDC变换器设计，包括建模和控制方法。(PEMFC hybrid system DCDC converter design, modeling and control methods.)

Linux虚拟机NAT网络连接设置，介绍各种连接方法，以及可能出现各种问题的解决办法。(Linux Virtual Machine NAT network connection settings, and introduce a variety of connection methods, and the possible emergence of a variety of solutions to the problems.)

cmos模拟电路设计，很经典的一本教材的电子版，大家分享(cmos analog circuit design, it is a textbook classic of the electronic version, we share)

电表应用的国外标准规约专属名词，适用于DLMS规约(Statute of foreign standard metering applications)

c8051f02系列芯片手册,具体型号为c8051f020

说明：  空间插值方法汇总 Inverse Distance to a Power（反距离加权插值法） Kriging（克里金插值法） Minimum Curvature（最小曲率） Modified Shepard s Method（改进谢别德法） Natural Neighbor（自然邻点插值法） Nearest Neighbor（最近邻点插值法） Polynomial Regression（多元回归法） Radial Basis Function（径向基函数法） Triangulation with Linear Interpolation（线性插值三角网法） Moving Average（移动平均法） Local Polynomial（局部多项式法） (Spatial Interpolation Methods Summary)

全国第一部、国内最好的、全网最热的产品经理公益免费视频教学课程，让你领略产品经理职业的独特魅力。通过浅显易懂的内容引导，真实细致案例解析，让学习者能够清晰的认识和理解“产品经理”的职业特性；并能掌握基本的产品经理技能与思维逻辑，目前已超过60万学习频次！本文档为课程PPT。(The first nationwide, the best, the hottest online product manager public welfare free video teaching course, let you appreciate the unique charm of the product manager profession. Through simple and easy-to-understand content guidance, real and detailed case analysis, so that learners can clearly understand and understand the professional characteristics of the "product manager"; and can grasp the basic product manager skills and logic of thinking, more than 600,000 learning frequency!)

说明：  Project Management Power point slides in pdf 1

linux用命令安装oracle 不需要显示图像 可以用终端安装(linux with the command to install oracle)

说明：  目前牵引变压器差动保护原理在某些因素的影响下并不能准确地区分变压器内部故障和外部故障，可能造成保护误动或拒动，危及电气化铁道系统的安全运行。针对这一现状，建立了计及铁芯非线性特性和磁滞效应而又无需铁芯的B－H曲线数据的牵引变压器模型，提出了一种通过参数辩识理论来辩识牵引变压器绕组参数实现牵引变压器微型机保护的方法。该方法能有效地区分内部故障、外部故障和励磁涌流。仿真计算表明了该方法的正确性和可行性。(Traction transformer differential protection principle in the safe operation and can not accurately distinguish between the transformer internal faults and external faults, may be to cause protection mistaken or refuse to move, endangering the electrified railway system under the influence of certain factors. In response to this situation, taking into account the core nonlinear characteristics and hysteresis and without traction transformer core of the B-H curve data model, a the traction transformer winding identification through parameter identification theory parameters to achieve traction transformer microcomputer protection. This method can effectively distinguish internal faults, external faults and magnetizing inrush current. The simulation results show that the correctness and feasibility of the method.)