Analog_communicatio

永磁同步电机的一个仿真模型，使用了电流和转速双闭环控制。(Permanent magnet synchronous motor, a simulation model, using the two-loop current and speed control.)

exresice of marcel sidi

不需要中间直流储能环节；能够四象限运行；具有优良的输入电流波形和输出电压波形；可自由控制的功率因数。(No intermediate dc energy storage link is required;Able to run in four quadrants;It has good input current waveform and output voltage waveform.Freely controllable power factor.)

image comparison and degradation

牛顿法nrk 这是牛顿法多维的matlab代码。你们可以试试看。哈哈。不知道可不可以帮到人呢。(newton method nrk )

介绍了一种特定频率响应滤波器的设计方法，具有很强的实际应用价值(Introduces the design method of a specific frequency response filter, which is of great practical application value)

电能质量控制,可以控制电压幅值和补偿电压上升跌落(the control of power quality)

三阶内模控制程序，对大滞后系统有很好的控制效果(Third-order internal model control procedures on the large time delay system has a good control effect)

The (a) section of Figure 1 illustrates the Line Echo Canceller (LEC) residing in the access network where echoes occur. Other voice processing modules, such as Automatic Level Control (ALC) and Noise Reduction (NR), are shown merely for illustration purposes. On the terminal side, both acoustic and electrical echo can occur. If the voice terminal is a speaker telephone set with an open acoustical path from the speaker to the microphone, the effect of acoustical echo is combined with the effect of the network echo. Because there is only a miniscule delay between the electrical signal and its echo, the speaker/listener is exposed to an effect known as side tone. Typically, instead of mounting a LEC at the terminal, side tone circuitry is placed to control the amount of the returned energy. The (b) section of Figure 1 shows examples of echo canceller signals representing the following:

Generates a pulse composed of Nc cycles of a sinusoidal waveform with fixed frequency Fp