基于DSP与MCU通信的数字化焊机实时控制系统

Real-time control system of digital welding machine based on communication between DSP and MCU

用TMS32 0F2 4 0数字信号处理器和AT89C2 0 5 1单片机的双CPU(Centerpro cessorunit)系统解决了数字化TIG焊机多任务控制系统的时间分配问题 ;这种双CPU控制系统的关键在于任务的分配、双CPU任务之间的速度匹配以及双CPU之间的有效通信 ;分析了这种双CPU系统的通信模式 ,提出了适合于焊机控制系统的软协议异步通信模式 ;针对作者目前研究的数字化TIG焊机 ,全方位地提出了多任务的控制系统 ,分析了硬件部分原理和软件部分工作原理 ,指出了这种以数字信号处理器 (DSP)为核心的双机甚至多机通信的实时控制系统对焊机实现数字化、信息化的优越性。

The problem )of time distribution of multitask control system in digital TIG welding machine is solved by using two-CPU system of TMS320F240 digital signal processor and AT89C2051 single-chip controller.The main points of this two-CPU control system are the of tasks distribution to two CPUs,velocity matching of tasks and efficient communication between two CPUs.Communication model of this two-CPU system is analyzed in this paper.The software agreement of asynchronous communication suitable to the occasion of control system in welding machine is come up.The paper comes up with multitask control system from almost every aspects according to author’s research on digital TIG welding machine,analyzes the principles of software and hardware,points out the superiority of this real-time control system centered by DSP(Digital Signal Processor) for the implementation of digitalization and information welding machine.