基于PLC的磨线机和剥线机控制系统的设计与实现

The Design and Implementation of Control System of Wire-GrindingMachine and Wire-Stripping Machine Based on PLCName:Jian LiuAdvisor:Prof.Xiaoshu LuoMajor:Circuit and SystemGrade:2005AbstractWith the development of automatic control theory and PLC technology,the PLC controltechnology which has the advantages of use easily,powerful function,high reliability,strongexpansion,wide applicability and the simplicity of building a control system and so on,has got abroad application increasingly.During the study time of graduate,the author has finished the research work of two projectswhich are wire-grinding machine and wire-stripping machine.Both of the systems are based onPLC technology.These are the backgrounds to this article which mainly discusses the applicationof the PLC control technology,and the following research work is completed.First,this article gives a overview of PLC control technology about it's generation,development,status quo of application at home and abroad,and the contrast with other controltechnique.The source,background,status quo of research at home and abroad,significance ofresearch about the two projects,the control system of wire-grinding machine and wire-strippingmachine,are introduced.Second,a method which is suited widely about the design of control system based on PLC iscovered.Starting with the structure and design principle of control system based on PLC,analyzes the method and steps of hardware design and software design emphatically.Third,the design which includes the overall design,hardware design and software design tothe control system of wire-grinding machine based on PLC is implemented.During the system'soverall design,a method of multistage wire-grinding is proposed,and the theory of calculatingwire diameter is also analyzed.The selection of PLC equipment,I/O distribution,PLC wiringdiagram,the wire diameter detector,analog input module and servo amplifiers are belong to thesystem's hardware design.The software design to the system includes the design of manymodules of PLC program and many human-machine interfaces.Fourth,the design which includes the overall design,hardware design and software designto the control system of wire-stripping machine based on PLC is completed.To the system'soverall design,calculating the pulse number of stepping motor is analyzed.What's more is thatI