computationalgeometry

说明：  触摸屏控制两台PLC，非常实用，有需要请下(触摸屏)

最终还是上传了我的课件，课件是北京大学的教学PPT，请大家分享学习(divide-and-conquer method)

说明：  Python3 for Data Analysis, a handbook,a table for studying python3.

一本非常NB的关于计算机的离散数学与应用书籍！(Discrete Mathematics and its Applications is a focused introduction to the primary themes in a discrete mathematics course, as introduced through extensive applications, expansive discussion, and detailed exercise sets. These themes include mathematical reasoning, combinatorial analysis, discrete structures, algorithmic thinking, and enhanced problem-solving skills through modeling. Its intent is to demonstrate the relevance and practicality of discrete mathematics to all students. The Fifth Edition includes a more thorough and linear presentation of logic, proof types and proof writing, and mathematical reasoning. This enhanced coverage will provide students with a solid understanding of the material as it relates to their immediate field of study and other relevant subjects. The inclusion of applications and examples to key topics has been significantly addressed to add clarity to every subject. True to the Fourth Edition, the text-specific web site supplements the subject matter i)

科技创新不是一夜之间就能搞成的。他也是一个渐变的过程。(technology innovation is not into the overnight. He is also a gradual process.)

ISA总线资料《ISA System Architecture》(ISA System Architecture)

运动控制系统，用于运动控制算法设计的基础书籍(Motion control system, a basic book for motion control algorithm design.)

一篇关于短时傅里叶变换的初级教程，适合初学者结合matlab学习用(On a short-time Fourier transform of the primary curriculum, suitable for beginners to learn matlab combination)

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. )

CPLD_FPGA的入门资料.pdf格式,非常清晰.不可多得的入门级资料.(CPLD_FPGA introductory information. Pdf format, is very clear. A rare entry-level information.)