julei

ybus is a code for calculating a bus

MIT--航空航天工程中的计算方法_有限元方法实例——涡轮叶片传热 MIT公开课程--航空航天工程中的计算方法 这门课程适用于在航空和航天工程中出现的计算方法的入门学习。其应用是从航空宇宙结构，空气动力学，动力学和控制，和航空宇宙系统选出的。其技术包括：常微分方程系统的数值积分；偏微分方程式的有限差分,有限体积, 和有限元的离散化；数值线性代数；本征值问题和带有约束的最优化。 (MIT- Aerospace Engineering in the finite element method calculation _ instance- turbine blade heat transfer MIT Open Course- Aerospace engineering calculation methods for this course in aviation and aerospace engineering in the calculation of the entry appears to learn. The application is from aerospace structures, aerodynamics, dynamics and control, and aerospace systems selected. The technologies include: numerical integration of ordinary differential equations systems partial differential equations of finite difference, finite volume, and finite element discretization numerical linear algebra eigenvalue problems with constraints and optimization.)

matlab fft()函数把所要求函数转换到频域(matlab fft () function required by the function switch to the frequency domain)

说明：  对机械振动信号用三维能量谱进行分析。。。。。。。。。。。(Mechanical vibration signals of three-dimensional power spectrum analysis. . . . . . . . . . .)

求零点、极点和增益，这是一些已经调好的实例，还有运行后的结果。(For zero, poles and gain, this is some have adjustable good examples, and after the operation result. )

此matab函数文件可以用来计算模型的李雅普诺夫指数，用于稳定性分析。(this Lyapunov.m file can be used to compute the lyapunov exponential)

BPSK modulation with BER with and without OFDM Here are the files for a OFDM modulation. Where in I have used a BPSK modulation and showed the decrease in BER with OFDM. This project was done as a course project under the Guidance of Dr. Dayalan Kasilingam, Umass Dartmouth. (BER with BPSK modulation with and without O FDM Here are the files for a OFDM modulation. Whe 're in I have used a BPSK modulation and showed the decrease in BER with OFDM. This project was done as a course project under the Guidance of Dr.. Day alan Kasilingam, UMassOnline Dartmouth.)

it s really good code for motion estimation in a video on image processing

图像质量评价，包括图像均方误差、信噪比比较等(Image quality evaluation, including images mean square error, signal to noise ratio comparison)

说明：  这是一个伽玛图像校正程序，首先读入原始图像，然后利用事先在matlab中计算得到的对每个灰度值校正后的数值替代原灰度值即可。(this is a gama image revising program. it uses revised grey level obtained from matlab to substitute original image data to fulfill this task.)