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The Design of FDM Networked Control System Based on CAN Bus and Realization of G Code

Author: ZhangHongPing
Tutor: YeChunSheng
School: Huazhong University of Science and Technology
Course: Materials Processing Engineering
Keywords: FDM CNC system Networked control CAN bus G code
CLC: TP273
Type: Master's thesis
Year: 2011
Downloads: 7
Quote: 0
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Abstract


FDM networked control system based on CAN bus is a networked control system which is proposed combining FDM control technology based on ARM, digital control technology, and CAN bus communication technology. With the development of FDM towards the miniaturization, low cost and intellectualization, FDM will be bound to be widely used in daily life in the form of three-dimensional printers. So, FDM networked control has good prospects for development.To meet the design requirement for FDM motion control module, temperature control module and wire feed control module, the article puts up a couple of FDM networked control systems through CAN bus communication, combing with upper PC control software, the centralized control on multiple modules is achieved. The research contents of this project are:1. According to characteristics of numerical control decency of FDM to set up the design framework of networked control system. PC master control node monitors a couple of FDM equipments, the CAN wire FDM receives information from the main control module and the sub control module, and monitoring results will be displayed on PC after the data processing. The PC master control node sends control information to all main control modules and sub control modules through the CAN bus, to complete the networked control of FDM.2. With the purpose of reducing costs of FDM and improving its generality, the processing path conversing to G code is realized. Read the three-dimensional coordinates of each point in the path file which have been sliced, filled and optimized, store them in the storage in the form of text documents, and then adopt the numerical control code compiling module to convert the three-dimensional point coordinate into standard G codes.3. Networked control system based on CAN bus requires each panel point node on the network to communicate through CAN messages. Therefore, in allusion to this system, the thesis develops a set of CAN communication message form, which can achieve the exchange of data information between each module of the system.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system
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