基于DSP2812的桌面3D打印机控制系统实现  

Realization of Desktop 3D Printer Control System Based on DSP2812

作　　者：时云 梁宇 张成林 王卓 王联凤[1,2,3] 王力 田海林 SHI Yun LIANG Yu ZHANG Cheng-lin WANG Zhuo WANG Lian-feng WANG Li TIAN Hai-lin(Shanghai Aerospace Equipments Manufacturer, Shanghai 200245, China Shanghai Research Center of Complex Metal Parts by Additive Manufacturing, Shanghai 200245, China Material Science and Engineering Department, Tongji University, Shanghai 200092, China)

机构地区：[1]上海航天设备制造总厂,上海200245 [2]上海复杂金属构件增材制造工程技术研究中心,上海200245 [3]同济大学材料科学与工程学院,上海200092

出　　处：《理化检验（物理分册）》2016年第10期690-692,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

基　　金：上海市科委资助项目(14DZ2253600)

摘　　要：以DSP2812数字信号处理芯片为核心控制器,设计了一种桌面3D打印机控制系统,应用DSP2812中的通用寄存器生成的非对称式脉冲宽度调制(PWM)波形结合DSP2812的通用输入/输出(I/O)口控制步进电机驱动芯片,进而实现步进电机的速率和位移控制;同时还创新性地应用DSP2812的通用数字I/O口实现双向的两线连续总线(I2C)功能,实现对步进电机的细分控制,从而控制步进电机的启动电流,降低系统功耗,提高步进电机的控制精度及稳定性。A control system of desktop 3Dprinter was designed with DSP2812 digital signal processing chip as the core controller.By generating non-symmetric pulse width modulation（PWM）waveform with the generalpurpose registers of the DSP2812,and using general-purpose input/output（I/O）port to control the stepper motor driver chip,the velocity and displacement control of the stepper motor was achieved.Another innovative application was using DSP2812＇s general-purpose digital I/O port to achieve universal inter-integrated circuit（I2 C）function,and then to control the stepper motor＇s starting current,which could reduce system power consumption and improve control accuracy and stability of the stepper motor.

关 键 词：DSP2812芯片 3D打印机 控制系统 驱动芯片 PWM波 I2C 步进电机 

分 类 号：TL374.2[核科学技术—核技术及应用]