MPS系统基本PLC实验系统改造.docVIP

基于MPS系统的基本PLC实验系统的改造 摘要 MPS系统是基于西门子PLC上的教学实验系统。它是为了提高学生动手能力和技能而设计的一套实用性实验设备。 MPS体现了机电一体化的技术实际应用，利用该系统可以模拟一个与实际生产情况十分接近的控制过程。但由于MPS单元各个原件与接口是特定的，所以限制了PLC作为教学实验设备的通用性。本设计进行合理改造，可以使设备完成与复杂机电设备相关的综合性控制实验，同时也能完成一般性PLC实验，极大地提高了设备的利用率。 在本次设计中，我们首先通过测量，以及参考资料对该系统的内部连线以及工作原理有了明确的了解，并且画出了具体的连线图。在此基础上我们对系统的程序和动作进行了对照分析，弄清楚了它是如何通过软硬件的结合来实现机构运动的。深入了解设备现状后，本设计设计了一个新的PLC实验系统。其主要思想是设计一个新的操作面板，在上面安装输入输出设备和继电器，然后将原有系统的输出端子引到设计方案完成后，焊接实物图。最后自选一个实验，利用step-7软件编制出plc顺序控制梯形图，在改造后的实验系统中下载运行，以验证改造方案的合理性。 关 键： MPS，PLC，梯形图, THE FUNDAMENTAL TRANSFORMATION OF PLC EXPERIMENTAL SYSTEM BASED ON MPS SYSTEM ABSTRACT MPS system is the teaching experimental equipment based on Siemens PLC. It is a set laboratory equipment of practical designing and production being used for students to improve the practical ability and skills. MPS reflects the practical application of mechanical and electrical integration technologies, the use of the system can simulate an actual production situation，which is very close to the control process.朗读 显示对应的拉丁字符的拼音 字典 However, due to all the devices about the unit and the interface are specified, it limits the PLC’s general use as the medium of instruction. By improving it in a proper way, this design makes it possible to carry out some compositive?control experiment related to complex electrical and mechanical device, in addition to some general PLC experiment. Thus we can make a full use of the device. During the design ,first we understand the circuit connection inside and principle and draw the circuit diagram by measuring and looking up the inference at hand. The next step, we find out the moving principle of every framework controlled by the hardware and software after comparing and analyzing the program and the movement of the system. After having a depth understanding of the status quo for the equipment, the task provides a new experimental system of the PLC. The main idea is to design a new operating panel, above of which to fix the input, output devices，relays,