AVR_RS485IAP

JSON脚本C语言使用的案例，包括C语言对JSON脚本的输入和输出。(JSON scripting language used C cases, including the C language for JSON script input and output.)

电力系统电度表通讯协议，主要针对DL645协议标准(Power system meter communication protocol, mainly for DL645 protocol standards)

C8051F320 单片机是 Silabs 公司推出的带 USB Device 接口的增强型 51 单片机，其兼容传统 51 架构，并在此基础上大大增强。基于大多数电子工程师 都熟悉经典的 51 系列及其开发环境， 我们选定这颗 MCU 作为对象进行 USB 开 发，将更多人带入 USB 开发的大门。关于 C8051F320 内部资源详情，请查看 datasheet。 本开发板的重点是针对 USB 应用， C8051F 系列单片机其他外设开 发过程将被简化以节约用户的学习、开发成本(C8051F320 microcontroller is Silabs company launched an enhanced interface with USB Device 51 SCM, which is compatible with the traditional 51 architecture, and greatly enhanced on this basis. Based on most electronic engineers Are familiar with the classic 51 series and its development environment, we have chosen as an object USB MCU Fengyun open Hair, the more people into the USB development door. About C8051F320 internal resources, please see the datasheet. The focus is on the development board USB application, C8051F MCU open other peripherals Hair process will be simplified to save the user s learning, development costs. )

交流电动机的矢量控制（Transvector Contrl）理论，从理论上解决了交流电动机转矩的高性能控制问题。其基本思想是在普通的三相交流电动机上设法模拟直流电动机转矩控制的规律，在磁场定向坐标上，将电流矢量分解成产生磁通的励磁电流分量 和产生转矩的转矩电流分量 ，并使两分量互相垂直，彼此独立，然后分别进行调节。这样，交流电动机的转矩控制，从原理和特性上就与直流电动机相似了。因此，矢量控制的关键仍是对电流矢量的幅值和空间位置的控制。(AC motor vector control (Transvector Contrl) theory, control theory to solve the problem of high-performance AC motor torque. The basic idea is to try to simulate the DC motor torque control law in the ordinary three-phase AC electric motor in field-oriented coordinates, the current vector decomposed to produce the excitation current component of the magnetic flux generating a torque current component and torque, and two components perpendicular to each other, independently of each other, and then were adjusted. Thus, AC motor torque control, the principle and characteristics of the DC motor on and similar. Therefore, the key vector control is still the amplitude and spatial position of the current vector control.)

使用51单片机，用其内部定时中断，和外部中断只找一个可控脉宽调制信号PWM(Using 51, with its internal timer interrupt, and external interrupt only to find a controllable pulse width modulation signal PWM)

A program to consicle very mad and good !! yes :

以dac7811带动的宽放的编写程序， 以dac7811带动的宽放的编写程序 以dac7811带动的宽放的编写程序，，(In dac7811 driven liberalization of programmingIn dac7811 driven liberalization of programming)

C写的ArcSDE连接添加Feature的类(Add ArcSDE Connection C written in class Feature)

串行da模块的应用，和单片机通信，通过单片机控制da模块(Serial da module application, and single-chip communication, via da MCU control module)

基于STM32F4的四轴航拍平台。以STM32F407为控制核心，四轴飞行器为载体，辅以云台的航拍系统。硬件上由飞控电路，电源管理，通信模块，动力系统，机架，云台伺服系统组成。算法上采用简洁稳定的四元数加互补滤波作为姿态解算算法，PID作为控制器，实现飞行，云台增稳等功能(Four axis aerial platform based on STM32F4. Taking STM32F407 as the control core, the four axis flying vehicle as the carrier, and the aerial camera system with ptz. The hardware is composed of flight control circuit, power management module, communication module, power system, frame and PTZ servo system. The algorithm uses a simple and stable four yuan number plus complementary filtering as the attitude calculation algorithm, and PID is used as a controller to achieve flight, PTZ stability, and other functions)