chuanxing-da

仿真电话键盘拨号的电路图 C 以及HEX文件 是我的单片机考试作业(this is my master piece)

28335的spwm输出，开环测试，三相spwm信号分别为epwm1~6，频率为20KHz(spwm output 28335, the open-loop test, three-phase spwm signals are epwm1 ~ 6, frequency 20KHz)

数据转换为正弦图，最终输出的正弦图为平均正弦图。(Data into sine figure, final output sine the graph is the average sinogram.)

滤波器广泛应用于数字信号处理、通信、自动控制领域,但设计可变宽频带有源滤波器则比较困难。利用单片机控制参数可编程的双二阶通用开关电容有源滤波器,精确设置有源滤波器的中心频率f，品质因数Q及有源滤波器的工作方式。本系统主要分为两个部分:即程控滤波器和程控放大器。程控放大器电压增益为40dB，通过单片机控制DA进行分压，可精确实现要求的10dB步进，误差小于0.5 ，通带为100Hz-500KHz，输入电压峰－峰值范围为10mV，在输入范围内无明显失真。由MAX264为核心的滤波器，可设置为高通、低通滤波器。通过单片机直接给出控制频率，使-3dB截止频率在1KHz-20KHz内可调，步进1KHz，误差小于1 。整个系统以52单片机为控制核心，电路简单，性能稳定，且具有较高精度，滤波参数调节通过单片机控制，较为方便。(Filters are widely used in digital signal processing, communications, automatic control area, but the design variable wideband active filter is more difficult. Control parameters using single-chip programmable universal switched-capacitor biquad active filter, active filter accurately set the center frequency f, quality factor Q and the active filter works. The system is mainly divided into two parts: the program-controlled filters and programmable amplifiers. Programmable amplifier voltage gain of 40dB, the DA through the partial pressure of single-chip control, can accurately achieve the required 10dB step, the error is less than 0.5 , passband to 100Hz-500KHz, input voltage peak- the range of 10mV, the input range no significant distortion. By the MAX264 as the core of filter can be set to high pass, low pass filter. Given directly by the microcontroller controls the frequency, the-3dB cutoff frequency at 1KHz-20KHz adjustable, step 1KHz, error is less than 1 . The entire system for)

无线传感器网络分簇路由协议中的LEACH的仿真，程序具有详细的备注，便于初学者学习。(Wireless sensor network clustering routing protocol LEACH simulation program has detailed notes, easy for beginners to learn.)

对ad7685的详细运用。加上12864显示。有电路图、芯片资料(Detailed use of ad7685 plus 12864 shows)

32*16点阵显示例程 模拟奥运会开幕式的(32* 16 dot matrix display routines Analog Olympics opening ceremony)

svpwm仿真模型，通过仿真确定svpwm的最佳配置模式(svpwm simulation model to determine the optimal configuration of the simulation model svpwm)

基于C语言的电导增量法，可以改变步长，使系统快速精确找到最大功率，很好！(The incremental conductance method, based on the C language can change step length, the system quickly and accurately find the maximum power, very good!)

简单的继电保护控制源代码，变压器及线路保护类(Simple relay control source code)