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异步电机直接转矩控制的仿真，matlab(Induction Motor Direct Torque Control, matlab)

电力系统节点导纳矩阵的形成，在excel中输入对应的阻抗数据，通过matlab生成对应的阻抗矩阵Y阵(Forming a power system node admittance matrix, the input impedance of the corresponding data in excel, and generate the corresponding impedance matrix Y matrix by matlab)

说明：  seir模型模拟传染病 人在康复以后产生了抗体就不会再得病。不同于SIS模型，我们在模型中引入康复者(The Recovered)，用 [公式] 表示，并满足总人数 [公式] 。这个时候就是SIR模型。一旦变为康复者，就不会再传染，即在概率传递过程中，一旦变为康复者，就没有概率再次转移为感染者或者易感者。我们假设感染者变为康复者的概率为我们来看下SIR模型的微分方程(SEIR model simulating infectious diseases)

This problem is main to solve a PDE. And we have validate hte program with the analysis results.

应用四元数求导航角，采用了陀螺仪和加速度计信号。(navi_test)

说明：  模拟退火的实现代码，给出具体的案例分析。可以按照不同需要对程序体进行改进(The realization of simulated annealing code, gives specific case studies. According to the different needs of the program to improve body)

MIMO-OFDM系统仿真MIMO-OFDM系统仿真MIMO-OFDM系统仿真MIMO-OFDM系统仿真MIMO-OFDM系统仿真(MIMO-OFDM system simulation MIMO-OFDM system simulation MIMO-OFDM system simulation MIMO-OFDM system simulation MIMO-OFDM system simulation)

说明：  CA码的产生、BOC调制信号的生成、自相关函数图形、鉴别曲线(the generation of CA code，the generation of BOC signal,the correlationship of CA code and BOC signal)

facts with multi level inverter simulation with matlab simulink toolbox