Design And Research On Fiberglass Embedded Temperature Control System Based On CAN Filed-Bus

Along with the rapid development of science and technology and a much higher level of industrial automation technology, in recent years, an increasing range of CAN bus technology to control industrial areas in the past and replace decentralized control system.based on CAN bus control system applications in the production process course the enormous increase production efficiency.This topic from fibreglass plant transformation projects of Jiujiang Changjiang fiberglass factory. Topics aimed at the design of a temperature control system based on the fiedbus used in the factory glass wiredrawing workshop.The system Improved correspondence of control nodes with computer,replaced more powerful micro-controller.System control functions have been greatly increased.First,paper introduced background of control system based on the fieldbus, an overview of the status of its technical developments and applications.Introduced a temperature control system control features and application environment.Discussed necessity and significance of the development of wiredrawing temperature control system base on CAN bus.Secondly introduced the CAN bus communication interface design principles and methods.In practical application, analysised the CAN interface controller functions and the controller performance characteristics.Then make presentations of characteristics of an embedded controller based on ARM LPC2131.based on system design,introduced CAN interface hardware design, the ARM micro controller hardware design,temperature feedback signals collection processing and the AD conversion circuit design.Analysised hardware functional module and given design ideas.Then this system functions on the basis of needs and system hardware design, develop software systems of micro controller based on ARM. Finally the paper has conducted the research on the system stability and the control strategy, bring the Fuzzy control to the classic PID control to constitute the Fuzzy-PID controller, enable the control system the quickly dynamic response and the smaller over modulation,make the system also has the high stable state precision.Experiments proved that the system control stability performance greatly improved.At the same time, increase the control system of statistical data collection functions to meet the user's needs.