机械专业论文中英文摘要

摘要

本文主要论述了基于PLC的钢管打捆机控制系统的设计思路和设计过程。主要包括钢管打捆机的汽缸动作的顺序控制和打捆钢带的定长剪切伺服控制以及人机交互界面设计。

论文介绍了钢管打捆机的国内外研究情况，说明了研制具有我国自主知识产权的钢管打捆机的必要性，讲述了国家对钢管包装的要求和对钢管打捆机的性能要求；分析了给定结构的钢管打捆机的工作流程和控制要求；设计和选用了钢管打捆机的气动系统和相应的控制系统的硬件；建立了打捆钢带定长剪切伺服控制的数学模型；选用触摸屏进行了人机交互界面的设计；对PLC控制系统的重点和难点程序进行了详细叙述。

本文所设计的钢管打捆机控制系统具有根据设定参数自动对钢管计数、自动剪切打捆钢带、自动完成钢管打捆的动作控制等功能，同时通过触摸屏实现参数的输入和实时显示。

关键词：自动钢管打捆机；定长剪切；变频调速；人机界面

This article mainly discusses the design idea and the design process of the PLC based strapping machine controlling system. It includes the sequence control of the cylinder moves of the strapping machine, the fixed-length shear servo control of the steel packing, and the designs of the Man-machine interface.

The thesis introduces the strapping machine’s studying condition both at home and abroad, illustrating the necessity of owning the strapping machine of the Independent intellectual property rights; analyzing the workflow and the control requirements of the given structure strapping machine; designing and choosing the hardware of the strapping machine’s pneumatic system and the corresponded controlling system; establishing the mathematical model of the fixed-length shear servo control; choosing the touch screen to do designs of the Man-machine interface; doing detailed descriptions to the important and difficult process of the PLC controlling system.

The strapping machine’s controlling system designed by this thesis owns the functions of counting steels automatically according to the setting parameters, shearing the packed steels automatically, and fulfilling the motion control of packing steels automatically, and at the same time, realizing the parameters input and the real-time display by the touch screen.

Key words: automatic strapping machine; fixed-length shear; frequency control; man-machine interface