hongwai

基于AT89C52和MAX197的多路模拟量采集系统(A mutilple Analog Data Acquisition system based on AT89C52 and MAX197)

说明：  51单片机开发，AD转换模块 ，模数转换，高精度(51 MCU development, AD converter module, analog-to-digital conversion, high-precision)

A Ph.D Thesis on Filter Bank Multicarrier Transmission scheme

MSP430F149单片机按键LED程序 单片机学习第一步必写程序(The MSP430F149 microcontroller button LED program microcontroller learning first step shall be written procedures)

说明：  使用STM32实现AD8803的adc电压输出(ADC Voltage Output of AD8803)

A few programs showing on how to create music using loops in gwbasic

ucgui LCD 驱动程序，包含常见的LCD控制器的驱动(ucgui LCD driver contains common LCD controller driver)

说明：  ESP8266硬件参考设计文件，有硬件PCB原理图，三个文件。。。(ESP8266 file,PCBSCHPDF,for learning)

提出了一种无电流传感器的三相 PWM 整流器控制策略。系统采用双闭环控制，外环 PI 调节器控制直流侧输出电压，内环通过滞环调节器控制有功功率和无功功率，达到单位功率因 数运行的目的。根据整流器的数学模型通过电流重构可获得网侧电流，以实现无电流传感器控制。 仿真实验证明该方案具有良好的控制性能。(In this paper a current sensorless control strategy of three-phase PWM rectifiers is presented. Double close-loop control method is applied in the system. DC voltage is regulated by the external loop PI regulator. The system can operate at unity power factor by controlling the active and reactive power with two inner loop hysteresis controllers. The input AC current can be reconstructed the mathematical model of PWM rectifiers in order to eliminating current sensors . The simulation results prove that the system has good performance.)

反应测试仪，测人的反应速度，精确到几百毫秒！通过按键测试！(Reaction tester, measuring people' s reaction speed, accurate to a few hundred milliseconds! Through the key test!)