LDPC

LDPC码的编译码原理，详细完整，是了解LDPC码基础知识的很好的材料(LDPC code encoding and decoding principles, detailed and complete, is to understand the basics of LDPC codes of good material)

龙芯CPU+IP+资源简介，希望大家能够了解自己开发的芯片。(Godson CPU+ IP+ Resource profile, hope that we can understand their own chips.)

说明：  关于电子设计方面的一些知识，希望对大家有帮助(On some knowledge of electronics design, we want to help)

说明：  SIMULINK非常经典的应用书籍，非常实用。(SIMULINK introduction)

说明：  韩文全字符集，以及输入法介绍，希望对大家有用(Korean full character set, and the input description, we want to be useful)

《Python+Cookbook》第三版中文(Python Cookbook V3.0)

编程珠玑中文第二版.pdf(包括源码) 本书是计算机科学方面的经典名著，原名Programming Pearls Second Edition 书的内容围绕程序设计人员面对的一系列实际问题展开。作者Jon Bentley 以其独有的洞察力和创造力，引导读者理解这些问题并学会解决方法，而这些正是程序员实际编程生涯中至关重要的。本书的特色是通过一些精心设计的有趣而又颇具指导意义的程序，对实用程序设计技巧及基本设计原则进行了透彻而睿智的描述，为复杂的编程问题提供了清晰而完备的解决思路。本书对各个层次的程序员都具有很高的阅读价值。. (Programming Pearls Chinese second edition. Pdf (including source code) This book is in computer science classics, formerly Programming Pearls Second Edition Contents of the book focus on program design were faced with a series of practical issues. Author Jon Bentley its unique insight and creativity, to guide readers to understand the issues and learn solutions, which is what the programmer actual programming career essential. The book features through some interesting and well-designed program is instructive, for practical programming skills and basic design principles and wise conduct a thorough description of the problem for complex programming provides a clear and complete solution ideas. Book for all levels of programmers have a high value of reading. .)

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. )

说明：  SLAM 例子2维激光雷达建图、包含路径、当前位姿、栅格地图(SLAM example 2D laser radar mapping, including path, current pose, raster map)

详细介绍了利用Parks-McClellan算法设计FIR滤波器(Described in detail using Parks-McClellan algorithm for FIR filter design)