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说明：  矩阵变换器 矩阵变换器的仿真模型及实现原理，利用sfunction实现对开关管的导通的控制(Matrix converter matrix converter and implementation of principles of the simulation model, using sfunction achieve the turn-on switch control of)

simulation thesis pmsm hall sensors matlab simulink foc dtc dtc-svm calculator theta speeb pdf

AD9914是一款直接数字频率合成器(DDS)，内置一个12位数模转换器，目标工作速率最高达3.5 GSPS，产生单音信号，双音信号以及调幅调相信号(AD9914 is a direct digital frequency synthesizer (DDS) with a 12 digit analog converter with a target operating rate of up to 3.5 GSPS, producing a single tone signal, a dual tone signal and a phase modulation signal.)

常用的DIP28封装库，适用于Autium Designer 的元件常用PCB封装(Common dip28 package library, common PCB packaging for autiumdesigner components)

双闭环正激电路仿真，已验证输出，效果稳定，(Double closed-loop circuit simulation, verified output, stable effect,)

MIT-BIH_ECG_心电数据的下载和读取图解(MIT-BIH_ECG_user guide)

电路的连接图，程序都有注释，仿真平台protues，适合初学的人(The connection diagram of the circuit, the program has the annotation, the simulation platform Protues, suitable for the first student)

4G模块EC20开发资料，硬件设计手册，AT指令，原理图和PCB图封装，完整开发资料。(Development Data of 4G Module EC20 and Hardware Design Manual)

A4988步进电机的驱动程序，使用STM32F407单片机驱动(A4988 stepper motor driver)

SNDR用于ADC计算信号噪声比，仅供参考学习，~~~(SNDR for ADC signal to noise ration calculation, for ur ref,~~~~~)