HMM

MATLAB电机仿真精华50例,源代码 包括同步电机，异步电机和直流电机。 (MATLAB simulation of the essence of 50 cases of motor, the source code, including synchronous motors, induction motors and DC motors.)

运用Matlab语言编程，进行信号分析的能力。音频信号是一种连续变化的模拟信号，计算机只能处理和记录二进制的数字信号，由自然音源而得的音频信号必须经过采样，量化和编码，变成二进制数据后才能送到计算机进行再编辑和存贮，通过本实验中了解模拟信号采样和重构的完整过程，加深对采样定理的理解。(Matlab programming language to use for signal analysis. Audio signal is a continuous change of the analog signal, the computer can only handle and record the binary digital signal, derived from natural sources of the audio signal to be sampled, quantification and encoding binary data into a computer in order to re- editing and storage, through this experiment to understand the analog signal sampling and reconstruction of the full process, to deepen understanding of the sampling theorem.)

基于改进的PI模型对非线性曲线进行拟合，二次寻优算法进行参数辨识，用逆模型前馈补偿(Based on the improved PI model, the nonlinear curve is fitted, and the second optimization algorithm is used to identify the parameters, and the inverse model feedforward compensation is used.)

直接序列扩频系统（DS，Direct Sequence）又称为直接序列调制系统或伪噪声系统（PN 系统），简称为直扩系统，是目前应用较为广泛的一种扩展频谱系统。要传送的信息经伪随机序列编码后对载波进行调制。在发信端越冬用扩频序列去扩展信号的频谱，在收信端，用相同的扩频友序列进行解扩，将展宽的频谱扩展信号还原成原始信号。因为伪随机序列的速率远大于要传送信息的速率，所以受调信号的频谱宽度将远大于要传送信息的频谱宽度，帮称之为扩频(Direct sequence spread spectrum (DS, Direct Sequence) modulation system, also known as direct sequence or pseudo-noise system (PN system), referred to as direct expansion systems, is currently the more widely used as a spread spectrum system. To send the information encoded by the pseudo-random sequence of carrier modulation. End of winter in the letter to extend the signal with the spreading sequence of spectrum, in the end prepared to receive and use the same sequence spread spectrum despreading friends, broadening the spectrum to restore the original signal expansion signals. Because the rate of pseudo-random sequence is much larger than the rate of information to be sent, so the frequency spectrum by adjusting the width of the spectrum is much larger than the width of the information to be sent to help is called spread spectrum)

对于任意三个整数，判断其是否为一个合法的日期值。给定一个日期值，计算若干天后的日期值，(For any three integers, determine whether it was a valid date value. Given a date and calculate the value of a number of days of the date,)

朋友发给我的短时傅里叶变换程序，希望对大家有帮助(A friend sent me the short time Fourier transform process, we hope to help)

说明：  混沌工具function [dlogCr,dlogr,dlogCrCI]=vr(logCr,logr,alpha)(function [dlogCr,dlogr,dlogCrCI]=vr(logCr,logr,alpha))

数学建模之公园建路问题（2012年西北工业大学数学建模竞赛）(Mathematical modeling of the park was built Northwestern Polytechnical University Mathematical Contest in Modeling (2012))

Implemet PLL and Costas methodology for carrier recovery

以上是6阶坡度的matlab源程序代码，程序非常简单，而且适用。希望你能有用。(These are the 6 step gradient matlab source code, the program is very simple and applicable. I hope you can be useful.)