brevity-modle-of-ppt

永磁同步电动机调速系统由pmsm月吸逆变器、永磁同步电动机和机械负载三部分组成,每个部分都具有非线性特性和参数的不确定性。因为PWM逆变器死区的存在,在低速以及调制频率很高时,死区特性将会导致逆变器输出电压包含很大的谐波分量,使得电机转矩发生很大的 脉动,甚至导致系统的不稳定。有些学者采用变结构控制降低死区的影响,由于变结构控制本身具有抖振现象,这使得所设计的控制器在到达滑模平面之前很容易激起系统的未建模动态,导致系统无法克服逆变器死区的影响。 (A PMSM drive sysetm Consisst of ade-ac inverter,PMSM and sorne meehan iealload.All hteree eom Ponenst of hte syset maerhca racterizedb ymodel swhich aernon linear and eonati nullkllown Parameetrs. )

清华大学庄茁教授编写的《Abaqus 非线性有限元分析实例》(Abaqus nonlinear finite element analysis)

公务员的电子试卷，做起来很方便，建议需要试试的同学下载这个软件。(Civil e-paper, make it very convenient, it is recommended the need for students to try to download the software.)

使用qt-c++來做為gui應用的教學檔，包含建立環境與第一次的Project建立(Use qt c++ to do the teaching file for gui applications, including the establishment of the environment and the establishment of the first Project)

basic english sentence patterns

Online Order Manager

本人参加国际会议做的一个海报，需安装PPT 2003和LaTeX，才能编辑，适合会用LaTeX的同学，不会用LaTeX的同学，可以参考一下海报设计，因为我还上传了一个图片。(Attach is a poster I made for an international conference in PPT format. One should open and eidit it in PC which Latex is also installed. For students who can not use Latex may take the design for reference, cause I also upload a Jepg picture.)

本文首先介绍了近些年来雷达模拟器获得广泛应用及其原因，然后对目标模 型、杂波模型和机载下视脉冲多普勒雷达的频谱分布进行了分析。接着，研究了 雷达回波信号模拟的实现方法，重点是采用网格映象法对地杂波信号的模拟进行 了分析和推导，并采用此方法对瑞利分布的高斯谱杂波、雷达回波信号进行了仿 真和分析。最后，针对用于某机载雷达信号模拟器系统的数字信号处理器进行了 设计和分析。 (This paper first introduces the radar simulator in recent years is widely available and the reasons for, and then on the target model, and the clutter model of airborne pulse Doppler radar, as under the spectrum distribution is analyzed. Then, to study radar signal simulation methods, with emphasis on the use of grid mapping method to the simulated clutter signal analysis and derivation, and use of this method, the Gaussian distribution of the Rayleigh spectrum of clutter, the radar echo signal simulation and analysis. Finally, for an airborne radar signal simulator system digital signal processor has been designed and analyzed.)

说明：  电机控制原理，ti矢量控制算法原理，控制实例算法以及历程代码，适合28335学习这学习电机控制(Motor control principle)

PYTHON核心教程，PYTHON开发必读(PYTHON core curriculum, PYTHON development of reading)