ATK-SIM900A

基于430的DC_DC变化，采用PID控制，调节PWM的输出占公比，从而反馈调节输出电压(Based on 430 DC_DC change, using PID control, adjust the PWM output accounted common ratio, thus regulating the output voltage feedback)

direct sparse solver for linear equations

static members source code for object oriented environment

有限差分波动方程不加边界条件二阶正演时间切片程序。(Finite difference wave equation without boundary conditions of second-order forward time-slicing procedure.)

器件SN65LBC184手册，便于学习者学习开发！(Device SN65LBC184 manual for ease learners develop!)

用于步进电机细分驱动，MSP430F149配置TMC429，进而驱动TMC249，细分驱动(Subdivision driver for stepper motor, MSP430F149 configuration TMC429 turn drives TMC249 Subdivision Driver)

本人收藏的一个按键发音的程序， 很不错的源码,值得下载(My collection procedures pronunciation of a button, it is a good source, it is worth downloading)

DIYMP3，能智能播放，很好的运用了STM32系统相关知识，花费了我将近半年的努力，基本上包含了STM32所有功能的应用。(DIYMP3, play to intelligence, very good use of the STM32 system related knowledge, it took me about half effort, basically contains all STM32 function application.)

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.)

Pcomm开发的串口调试助手,能实现简单的发送和接收.(Pcomm development of serial debugging assistant)