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matlab toan tap wellcome

给音频加100hz正弦噪音，分别用巴特沃兹、切比雪夫、椭圆滤波器滤波，显示误差曲线(Plus 100hz noise to sound, respectively Butterworth, Chebyshev, elliptic filter filtering error curve)

针对永磁同步电机常规直接转矩控制系统涉及到的问题,例如磁链的准确观测、定子电阻的变化、电压矢量开关表的改进以及滞环控制器的改进等等,本文都作了详细的分析,并提出了改进方案。为了提高系统的性能,本文将空间矢量调制的方法引入了常规直接转矩控制中,并在此基础上,对永磁同步电机无速度传感器问题作了详细的分析,总结了国内外的研究热点,提出了采用转子磁链矢量为基础的永磁同步电机直接转矩控制速度估计方法。仿真结果表明,该方案具有很好的动、静态特性。(Firstly, the paper analyzes the principle of direct torque control of permanent magnet synchronous motor and elaborates the impact of space voltage vector of the stator flux and the electromagnetic torque.Secondly, the paper introduces direct torque control of permanent magnet synchronous motor SVPWM technology.Under the same hardware conditions,the system can obtain More continuous voltage space vector by taking advantage of SVPWM.The simulation results show the program not only keeps the direct torque control fast dynamic response, but also reduce the motor torque ripple.)

这是永磁同步直线电机的空间矢量控制模型，已经通过仿真请放心下载(This is the space vector control of permanent magnet synchronous linear motor model, the simulation has been downloaded, please be assured)

TabActivity实现多页面切换,经典的底部导航栏功能(TabActivity demo)

信号检测与估计————理论与应用一书中的仿真题答案(Simulation questions---- answer signal detection and estimation theory and application of a book)

自己实现的一维、二维DFT。优点：变换后的低频分量在中间，弥补了matlab库函数的不足（高频分量在中间）(Realize their own one-dimensional, two-dimensional DFT. Advantages: low-frequency components after the transformation in the middle, made up for the inadequacy of matlab library function (high-frequency component in the middle))

采用的是RD算法实现合成孔径雷达成像，距离－多普勒RDA二维成像仿真(RD algorithm is used in synthetic aperture radar imaging, range- Doppler two-dimensional imaging simulation RDA)

说明：  异步电动机matlab/simulink仿真模型的完美搭建(Asynchronous motor matlab/simulink simulation model to build the perfect)

Paradigms Theory and Applications using MATLAB