three

改进前推回代潮流算法，计算潮流，适应强，迭代次数少。(Improved push back the tide before generation algorithms, computing trends, adaptable, less iterations.)

来源于电力系统分析教材，使用IEEE33节点配电网前推回代潮流计算程序，程序有大量注释，利于初学者学习。 (From power system analysis materials, use IEEE33 node distribution grid before backward sweep flow calculation program, the program has a large number of comments, which will help beginners to learn.)

说明：  基于matlab搭建PMSM基础控制模型，采用双环PI控制策略。(PMSM basic control model was built based on matlab, and double-loop PI control strategy was adopted.)

pmsm matlab simulation

利用拉普拉斯变换的思想，通过对数据进行差分，近似得到拉普拉斯变换后的结果，然后检查正负交换的位置，则此为极值点位置，利用此思想得到极值点的位置。(Using the ideas of Laplace transform of the data by the difference approximation get results Laplace transform, and then check the position of the positive and negative exchange, this is the extreme position, take advantage of this thinking of getting extreme points location.)

A Matlab toolbox for exact linear time-invariant system identification is presented. The emphasis is on the variety of possible ways to implement the mappings from data to parameters of the data generating system. The considered system representations are input/state/output, difference equation, and left matrix fraction. KEYWORDS: subspace identification, deterministic subspace identification, balanced model reduction, approximate system identification, MPUM.

说明：  先用.txt文件导出杆系结构和梁系结构的用于节点校核的数据，然后用matlab程序计算即可进行构件验算(time. Txt file is derived bar structure and the structure of the beam system for checking the data node, then Matlab can be calculated for checking Component)

good matlab textbook, highly recommended!

these files contain matlab files and documents

mablab6.0时尚创作百例(mablab6.0 creative fashion 100 cases)