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A UDF of k epsilon model which can be used for modified turbulence modelling calculations with ansys fluent

7620摄像头采集程序（飞思卡尔128芯片）(7620 camera acquisition program (the Freescale 128 chip))

用stm32单片机进行pwm输出和ADC设置(USE STM32 MCU OUT PUT PWM WAVE AND ADC)

步进电机28BYJ48型四相八拍电机，电压为DC5V—DC12V。当对步进电机施加一系列连续不断的控制脉冲时，它可以连续不断地转动。每一个脉冲信号对应步进电机的某一相或两相绕组的通电状态改变一次，也就对应转子转过一定的角度（一个步距角）。当通电状态的改变完成一个循环时，转子转过一个齿距。四相步进电机可以在不同的通电方式下运行，常见的通电方式有单（单相绕组通电）四拍（A-B-C-D-A。。。），双（双相绕组通电）四拍（AB-BC-CD-DA-AB-。。。），八拍（A-AB-B-BC-C-CD-D-DA-A。。。）(Stepping Motor 28BYJ48 four-phase eight-phase motor, the voltage DC5V-DC12V. When a series of continuous control pulses are applied to the stepper motor, it can be continuously rotated. Each pulse signal corresponds to the stepper motor of a phase or two-phase winding power state change once, also corresponds to the rotor through a certain angle (a step angle). When the change in the power-on state completes one cycle, the rotor turns one pitch. Four-phase stepper motors can be operated in different power-up modes. The common power-up modes are: single-phase winding power (ABCDA ...), double (dual-phase winding)-DA-AB-...), eight beats (A-AB-B-BC-C-CD-)

单片机系统原理图 拥有各种功能 基本上能满足学生单片机学习开发应用(mcu perfect)

AT89C51驱动直流电机，有仿真跟C语言。直流电机驱动，实现直流电机的正、反转，PWM调速。(AT89C51-driven DC motor, a simulation with the C language. DC motor drives, DC motor forward and reverse PWM speed control.)

j1939在康明斯电控发动机上的应用情况和基本概念(j1939 electronically controlled Cummins engine in the application and basic concepts)

FAT32文件系统移植到UC/OS中，实现对sd卡的操作(FAT32 file system migration to UC/OS, the realization of the operation of the sd card)

MSP430F149控制SD卡读写操作，支持FAT16文件系统(The MSP430F149 Control SD card read and write operations to support the FAT16 file system)

用VC进行单片机的串口通讯，并进行数据采集，进行处理以后在PC端显示(VC MCU for serial communication, and data collection, processing beyond the PC to display)