Chan-Vese

太阳黑子是人类长久以来感兴趣的问题。此处运用matlab代码对太阳黑子的记录的数据进行处理，希望能提供帮助( Using archival records,astronomers have applied Wolfer s rule to determine sunspot activity back to the year 1700. Today the sunspot index is measured by many astronomers and the worldwide distribution of the data is coordinated by the Solar Influences Data Center at the Royal Observatory of Belgium. The text file sunspot.dat in the matlab/demos directory has two columns of numbers. The first column is the years from 1700 to 1987 and the second column is the average Wolfer sunspot number for each year.)

1．用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图 2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选 3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱 4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图(1. Produce sine wave, square wave, and the white noise signal with Matlab, and their time-domain waveform display 2. FFT transform, display each spectrum, where the sampling rate, frequency, length optional data 3. RMS to make maps of the three signals, power spectrum, as well as the number of RMS map 4. Restored by inverse Fourier transform IFFT signal and displays the time domain waveforms sinusoidal signal recovery)

图分割算法中的优化算法中的谱算法中的平均分割算法A-cut（average-cut ）(Figure segmentation algorithm in the optimization algorithm in the spectral segmentation algorithm, the average A-cut (average-cut))

说明：  非线性最小二乘优化问题 非线性最小二乘优化问题的程序，欢迎各位下载(Nonlinear least squares optimization problem of nonlinear least square optimization procedure, to welcome you to download)

position control of inverted pendulum

说明：  直方图添加与去除椒盐噪声和高斯噪声并进行对比，以及直方图均衡化的matlab程序实现代码 (Add the histogram and remove the salt and pepper noise and Gaussian noise and contrast, and histogram equalization matlab program code)

《先进PID控制及其仿真》，讲述了如何在MATLAB环境下对各种PID算法的仿真，很有价值的一本书(" Advanced PID Control and Simulation" , describes how under the MATLAB environment for the simulation of various PID algorithm, the value of a book)

一种新型的pwm逆变器,利用了流行的z-source技术(A novel pwm inverter, using the popular z-source technology)

The model used for creating the reference voltage is shown in Fig. 4. First, photovoltaic output current (Ipv) and output voltage (Vpv) are passed through a first order low pass filter with a magnitude of G = 1 and a time constant of T = 0.01 seconds in order to filter out the high frequency components or harmonics from these signals as shown in Fig. 5 and Fig. 6. The filtered current and voltage signals (Ipv_F and Vpv_F) are then fed into the MPPT control block that uses the Incremental Conductance Tracking Algorithm. An algorithm that is based on the fact the slope of the PV array power curve shown in Fig. 7 is zero at the Maximum Power Point (MPP), positive on the left of the MPP, and negative on the right. The MPP can thus be tracked by comparing the instantaneous conductance (I/V) to the incremental conductance (∆ I/∆ V) [11] as in (1):

La logique floue est le meilleur moyen de convertir les stratégies de contrô le du langage naturel qui sont utilisées par l’homme à une forme utilisable par les machines. Des expériences ont montré qu’un contrô leur classique donne parfois même de meilleurs résultats que l’opérateur humain