基于PLC的直流电机调速系统设计

*******学院毕业设计基于 PLC 的直流电机调速系统设计学 生： 学 号：专 业： 班 级：指导老师： ****学院自动化与电子信息学院****年摘 要 设计选用日本三菱公司FX2N-16MT基本单元和FX2N-4AD，FX2N-2DA 模拟量输/输出扩展模块，并利用其功能指令设计的直流脉宽双闭环调速系统，实现了调速过程速度快、精度高,控制系统的参数便于调试和高工作可靠性，通过给定的调速系统硬件配置和梯形图，经模拟调试输出信号验证了各项指标均满足调速系统的要求。关键词：PLC；调速系统；应用下载后可任意编辑ABSTRACT The double closed-loop DC PWM speed system of direct motor uses the FX2N-16MT basic unit of Japanese Mitsubishi company and FX2N-4ADs, FX2N-2DA emulation input/ output expanding mold , making use of its function instruction. It realizes fast adjust mend of the speed course , high precision, which make it easy to debug control procedure and work reliable, which is a development direction in the industrial control. Hardware disposition and ladder chart are given in this text. It can be adjusted by emulation and various index signs of output signal all satisfy the requirements of the adjust system.Key words：PLC；Adjusting Speed System；Application 3 目录1.1 直流调速系统的进展史概述.............................................................................................11.2 可编程控制器 PLC.............................................................................................................21.2.1 PLC 的进展概述......................................................................................................21.2.2 PLC 的特点..............................................................................................................31.3 选题背景及论文主要内容.................................................................................................41.3.1 选题背景..............................................................................................................