Memory_2005

this code is for simulation solution

基于快速傅里叶变换的MATLAB实现，内附有源程序(MATLAB based on fast Fourier transform implementation, enclosing a source)

基于Matlab simulink的系统仿真设计及应用的函数文件代码(Matlab Simulink-based simulation system design and application code in the function)

这里我们针对三级固体火箭进行研究，主要考虑每一级发动机工作时推力 和比冲 与发动机试车存在摄动偏差（相差 ）时所产生火箭关机点时刻的状态偏差。火箭的飞行的动力学方程可建立在地面发射坐标系中，火箭的第一级、第二级和第三级按照固定的俯仰角程序飞行，第二、三级飞行时已在大气层外，此时可忽略气动力的影响。(Here we study for three solid rocket, the main consideration at every level when the engine thrust and state arising the moment the rocket off point perturbation deviation (difference) in the presence of specific impulse and engine test bias. Outside of the rocket flight dynamics equations can be established on the ground coordinate system launch, the rocket s first stage, the second and third stages according to a fixed elevation angle of flight procedures, and the second, when the third flight already in the atmosphere, this when can ignore the effects of gas dynamics.)

采用稀疏矩阵的PQ分解法潮流计算程序（依据《电力系统计算》一书附录用C语言编写，使用方法、变量名称都与书上一致）(Decoupled load flow)

vc调用matlab dll 读xls内容(vc call the matlab dll reading xls content)

解决霍夫曼树的编码问题，二进制和十进制数可以相互转换(Huffman coding problem solving tree, binary and decimal numbers can be converted to each other.)

用matlab画了一个小动物，利用了plot，sina，cos等 函数(use Matlab drew a small animal )

Shell sort is a very interesting modification of the sorting algorithm simple inserts.

以及简易倒立摆,实现一级PID建议算法控制倒立摆不倒的程序，仅做参考(yi ji jian y idao li bai)