基于ARM的桌面型3D打印机控制系统设计_谭秀腾.pdf

第 41 卷第 5 期 应 用 科 技 Vol． 41 №． 5 2014 年 10 月 Applied Science and Technology Oct． 2014 doi: 10． 3969 / j． issn． 1009-671X． 201310013 网络出版地址: http: / /www． cnki． net /kcms /doi /10． 3969 / j． issn． 1009-671X． 201310013． html 基于 AＲM 的桌面型 3D 打印机控制系统设计 谭秀腾，郭小定，李小龙，余亮 湖南科技大学 信息与电气工程学院，湖南 湘潭 411201 摘 要: 针对基于单片机为控制器的桌面型 3D 打印机控制系统中存在的处理速度慢、片外芯片多、电路复杂、打印质量 不高等问题，设计了基于 AＲM 为控制器的桌面型 3D 打印机控制系统。系统采用了 NXP 公司推出的基于 AＲM Cortex- M3 内核的 LPC1768 微控制器，用它进行与上位机通信、数据处理、模拟量采集与处理、信号控制，选用 A4988 专用两相 步进电机驱动器实现步进电机细分驱动，简化步进电机细分驱动的设计，行程开关电路采用 GK152 红外光电传感器． 软 件采用了 PID 方式调节加热床、挤出机加热温度。文中论述了控制系统主要硬件电路设计和软件的实现流程，系统测试 表明性能良好． 关键词: Cortex-M3; LPC1768; 桌面型 3D 打印机; PID 调节; 步进电机 /A4988 中图分类号: TP23 文献标志码: A 文章编号: 1009-671X( 2014) 05-057-06 Design of desktop 3D printer control system based on AＲM TAN Xiuteng，GUO Xiaoding，LI Xiaolong，YU Liang School of Information and Electrical Engineering，Hunan University of Science and Technology，Xiangtan 411201，China Abstract: The desktop 3D printer control systems with a sigle-chip controller have problems of slow processing speed，more pieces of outside chips，circuit complexity and poor quality of printing． To solve these problems，a desktop 3D printer control system with an AＲM controller is designed． The system employs the LPC1768 microcon- troller based on AＲM Cortex-M3 core which is introduced by the NXP and used to communicate with the host com- puter，data processing，analog acquisition and processing，signal control，used A4988 special two-phase stepper motor driver to implement stepper motor subdivision drive and to simplify the drive design for stepping motor． The travel switch circuit adopts GK152 infrared photoelectric sensor． The software adopted PID method in order to ad- just the heating temperature of heating bed and extruder． This paper discusses the main hardware circuit design and software realization process of the control system． The System testing shows good performance． Keywords: Cortex-M3; LPC1768; desktop 3D printer; PID regulator; stepping motor