Research & Development Of Step-motor Controller Of PC-based Open-architeture NC System

Base on the analyzing the development status and trend of Open-architecture NC system and its motion controller, this article uses new MCU and IC to design the motion controller of Open-architecture NC system which is based on PC. In the course of the hardware designing, we break the limits of RS232 standard, achieve the goal of high speed serial communication. The pulse is programmable so CPU have more time to do other jobs. We also scheme out the signal conversion circuit and the new system anti-interference circuit. We modularize the softerware with the message drive programming idea that usually applies in Windows programming.Chapter one: Firstly, summarizes the development status of NC techenology. Then bring up the conception of Open-architecture NC system and its general module. By introducing some familiar architecture. Finally, the content and configuration arrangement of this dissertation was gived.Chapter two: Confirms the designing principle through analyzing the assignment of this item; then studying, analyzing, comparing the pivotal technology of motion controller and Ascertaining the technology actualization scheme of system designing;Chapter three: design the hardware system of motion controller, lays stress on analyzing the pulse output circuit, serial communication interface circuit, D/A conversion circuit, V/I conversion circuit, swich input circuit and the anti-interference circuit.Chapter four: confirm the general architecture of software. Detailedly expounds the basic theory of the message drive. Discusse the module of auto process and the high speed serial communication in detail.Chapter five: introduces the structure and functional module arranging of the motion controller, and gives the process and result of system test.Chapter six: summarizes the work of this dissertation and puts forward the future research work.