基于DSP的激光切割机运动控制卡的设计与实现

Motion Control Card for Laser Cutting Machine Based on DSP

针对传统以单片机为核心控制器的激光切割机运动控制卡存在计算能力差、传输数据慢等问题,提出了基于DSP+PC的实现方案。硬件方面,采用RS485实现数据的传输;通过光栅尺或光电编码器实现位置闭环控制;增加光耦隔离,减小外部对运动控制卡的干扰。软件使用CCS3.3完成了激光切割机运动控制卡的主程序和中断服务程序的开发。最后给出调速控制的实验结果,实验表明基于DSP控制器能很好的完成各种用户指令以及加工速度要求。

In view＇of that traditional laser cutting machine motion control card,which uses single chip microcomputer as the core controller,has poor calculating ability,slow data transmission and other problems,this paper puts forward the realization scheme based on DSP＋PC.In the hardware,the RS485 realizes the data transmission,the grating ruler or photoelectric en- coder realize position closed-loop control,increase the optical coupling isolation to reduce external interference on mOtion control card.In the software,uses the CCS3.3 completed the main program and interrupt service program development of laser cutting machine motion control card.Finally,the experimental results of speed control,experimental results show that the controller based on DSP can be very good to complete the user commands and processing speed requirements.