基于 ARM 的桌面型3D打印机控制系统设计

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。

Design of desktop 3D printer control system based on ARM

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 adjust the heating temperature of heating bed and extruder.This paper discusses the main hardware circuit design and soft-ware realization process of the control system.The System testing shows good performance.