Cross-section Of The Machine Control System Research And Design

The main purpose of the thesis is to achieve auto control of the aluminum plate shear cutter with Programmable Logical Controller(PLC).As the important manufacturing machine in plate production, the cut precision, velocity and automatization of the shear cutter will directly effect the efficiency and quality of the product.It has great theoretic value,because it involves many technics in following areas. computer control, exact mechanical transmission, direct current actiyator and man-machine engineering,etc.The thesis introduces the work principle and technologic process of the shear cutter,and analyzes key issues of the control system.It tells design methods and realization of PLC control system ,and emphasizes on the analysis of reliability and anti-jamming in industrial use. The thesis provides time control scheme to control flying shear of the shear cutter.Besides, it provides more accurate synchronization control system and proves feasibility of the scheme theoretically. The schemes can be applied to not only the aluminum plate shear cutter,but also the other plates shear cutter.They have wide application prospect.Chapter one introduces the background and task of the thesis ,and the development of the shear cutter. Chapter two tells the work principle of the parts in the shear cutter and discusses the direct current actiyator particularly.Chapter three tells the technology and theory which will be used in system design ,then introduces Siemens AG. SIMATIC S7-200 PLC and emphasizes on the analysis of reliability in industrial use .Chapter four analyzes key issues of the shear cutter control system and deducts correlative formulas. Chapter five analyzes design demand,then based on it,designs the software and hardware control schemes.Chaper six sumes up the development of the thesis and puts forward advice for system improvement.