STM32F407-openmv-project-

说明：  Wiegand 26/34转RS485、RS232信号转换模块（原理图+PCB+BOM）,输入韦根信号，转换为串口输出(Wiegand 26/34 to RS485, RS232 signal conversion module (schematic + PCB + BOM), input Wiegand signal, converted to serial output)

说明：  MST703烧录工具，有需要的朋友可以下载(MST703 burning tool, friends in need can download)

实现无线传输物理层传输过程中功率的优化以及实现降低噪声(Optimize the wireless transmission process in the physical layer transmission power, and achieve lower noise)

针对感应电机矢量控制系统，提出了一种可以同时补 偿死区误差电压并消除零电流钳位现象的死区补偿方法。在分析影响死区效应的因素以及等效死区时间表达式的基础上，采用平均死区时间补偿法，在两相静止轴系中对等效死区时间产生的误差电压进行了补偿。为了提高电流极性检测的准确性，利用旋转轴系中的励磁电流和转矩电流分量经过 坐标反变换，判断电流在两相静止轴系所处的扇区来决定需 要施加的补偿电压。(A dead—time compensation strategy is presented to compensate dead time elTor voltage and eliminate zero·- current clamping effect for vector controlled induction motor drive system．The factors influencing dead·time effect are analyzed,and expression of equivalent dead time is deduced.Average dead·time compensation technique is adopted to compensate error voltage at two—axes stationary frame．To improve accuracy of current polarity detection，components of magnetizing current and torque current are transformed into two-axes stationary frame．Therefore，compensating voltage vector Can be determined according to the sector where the current vector locates．)

说明：  实用教程，单片机编程框架。很详细。初学者可以看看(Practical tutorial, SCM programming framework. Very detailed. Beginners can take a look at it.)

PIC16f1947驱动TM1620数码管芯片(PIC16f1947 Drives TM1620 Digital Tube Chip)

一个C++库，用于CNC数控加工之CAM处理。(OpenCAMLib (ocl) is a c++ library for creating toolpaths for cnc-machines such as mills and lathes.)

利用片内定时器/计数器来进行计时时间间隔1S(Chip timer/counter to the the timing time interval 1S)

这是一款韩国暖风机，用于干燥的地方，此程序经过仿真通过，而且烧录到硬件中，功能ok(This is a South Korean heaters used in a dry place, this program has been through simulation, and burned into the hardware, functions ok)

斩波电路也称为直接直流变流电路，它的功能设计将直流电变为另一固定电压或可调 电压的直流电，下面给出一种降压斩波电路。(The chopper circuit is called direct DC converter circuit, it will function design of DC to DC voltage or other fixed adjustable voltage, a chopper circuit is given below.)