PQ

说明：  基于Matlab的QPSK算法仿真，包含了算法结构，仿真图形等，仿真了通信过程中的调制过程。(Matlab simulation based on the QPSK method, including the algorithm structure, graphics, simulation, simulation of the communication process in the modulation process.)

以中等纯度的精馏塔为研究对象，考虑到不等分子溢流的影响和非理想的汽液平衡，可以得到塔顶产品轻组分含量Y与回流量L之间的传递函数为： 其中由于现场环境干扰，输出带有测量噪声是（0，1）的正态分布序列，它的方差为ɑ=0.5。由于输出中带有很大的噪声信号，故将数字滤波技术中常见的低通滤波器由于偏差控制，滤掉其中的噪声信号，然后在对其进行PID计算，得到实际的控制量。在该方法在噪声较强的环境下，可以得到较好的控制效果。 控制要求： 1、 采用带低通滤波器的增量式PID将塔顶轻组分含量控制在0.99 2、 用ISTE法整定PID参数 3、 在控制过程中，到150周期加入幅度为-20 的阶跃干扰，在第300周期干扰消失。分析PID参数的抗干扰性。 (Medium-purity distillation column, taking into account ranging from molecular overflow and non-ideal vapor-liquid equilibrium, the transfer function between the light component content of the top product Y and the back flow L can be obtained as: Because the field of environmental interference, output with the measurement noise is a normal distribution (0,1) sequence, its variance ɑ = 0.5. As with a lot of noise in the output signal, it will be common in low-pass filter in the digital filtering techniques due to the bias control, filter out the noise signal, then its PID, the actual amount of control. In the strong noise environment, you can get better control effect. Control requirements: 1, using the incremental PID with a low-pass filter to the top of the tower content of light components in the 0.99 2, the method of ISTE tuning PID parameters 3, in the control process, to 150 cycles join the range of-20 step disturbance, disappearance of interference in the first 300 c)

maple教程-科学出版社 强大的符号计算引擎(maple tutorial- Science Press powerful symbolic computation engine)

power_Transfo3phCoreType_iexc.rar,功率电子领域matlab仿真文件，已经验证过，程序运行正常(power_Transfo3phCoreType_iexc.rar,Power electronics field matlab simulation file, has already been verified, the normal operating procedures)

用矩量法和正交模法分析四元八木天线的特性。两种方法的对比。用E面、H面和方向性图。(Using moment method and analysis of orthomodular quaternion Yagi antenna characteristics. Comparison of two methods. E surface used, H surface and the direction map.)

说明：  迪克拉斯算法进行寻找最优路径。有一定参考价值(Dick Las algorithm to find the optimal path. Some reference value)

说明：  Includes source codes to find DFT of a sequence, to find odd and even components of a signal, to perform PSK, FSK, QPSK.

计算原图像在阈值为s时均值的matlab源代码 (Calculation of the original image when the threshold value s mean matlab source code)

拉普拉斯残差金字塔在图像融合有着非常重要的作用，该程序是拉普拉斯金字塔在matlab中的应用(Laplace residual pyramid image fusion has a very important role in the program is the Laplace pyramid application in matlab)

here is the code for serial communications