PID

Verify the PackageManager related operations require specific permissions.

pdc_adma.c - Pacific Digital Corporation ADMA.

Multisim10的DAC原理仿真演示。采用两个计数器级联成8位计数器，然后进行DAC转换。转换前后的结果分别用数码管和示波器显示。对理解DAC的原理非常有帮助。(This simulation contains two digital counters to generate 8-bit output to DAC, both digital number and analog values are dispayed. It is helpful to understand the principal of DAC.)

iphone7原理图，很清晰，有需要的可以下载(iphone7_sch,Friends in need can be downloaded to see!)

leetcode题目解答程序，采用C++编写。(leetcode subject to answer procedure for the preparation of C++.)

针对多电机同步控制中传统环形耦合 PID 控制存在抗扰动性不强 扰动下同步误差较大等问题， 提出了一种带前馈控制的滑模变结构多电机相邻耦合控制策略， 建立了3 台永磁同步电动机同步控制仿真模 型， 通过 Lyapunov 稳定性理论证明了滑模控制算法的稳定性， 并进行了交变负载 突变负载实验 仿真分析和 实验结果表明， 该控制策略相比传统环形耦合 PID 控制 相邻耦合 PID 控制具有更高的同步精度和更好的抗扰 动性能(Abstract: Aiming at the problem of poor anti-disturbance capability and big synchronization error under disturbance of traditional ring-couple PID control method in multi-axis synchronization control，a sliding mode variable structure with feed-forward control for relative coupling control strategy is proposed． Three Permanent Magnet Synchronous Motor ( PMSM) for synchronized control simulation modl is set up． The stability of the proposed control algorithm is proved according to Lyapunov stability theory． The control strategy is tested by alternating load，and mutant load experiment． Simulation analysis and experimental results show that the presented control strategy has higher synchronization accuracy and better anti-disturbance capability in camparison with the traditional ring-couple PID control and relative-couple PID control．)

基于STM32的AT25128底层驱动。用库函数编写，基于Keil(Based on the STM32 AT25128 underlying driver. Written library functions, based on Keil)

基于51开发平台，采用指纹十本模块，实现指纹识别，存储，对比等程序。代码注释详尽，采用外部EEPROM存储。(51 based on the development platform, using the ten fingerprint module, fingerprint identification, storage, comparison program. The code detailed notes, using external EEPROM storage.)

Stepper motor driver with FreeRTOS. Used in a motor control project with STM3210C-EVAL

飞思卡尔16位单片机无线遥控程序，供初学者开发学习(Wireless remote control program)