文档介绍：摘要
本设计以液粘调速装置为基础,配以可编程序控制器进行控制,利用高级单元数字化给定代替传统的机械式给定。按给定速度图,采用PID高级单元,构成转速、电流PI调节器,实现双闭环调速控制,通过井下、井上的控制信号,实现矿井交流提升机全自动调速控制和手动检修控制。文中详细介绍了所选PLC机的特点、各高级单元的使用及设定,给出了矿井提升工作流程图、程序设计流程图及设计程序。
本系统采用PLC控制转速、电流PI控制双闭环调节器,通过光电编码器采样转速信号,电流互感器在电动机定子侧采样电流信号,经过可编程控制器的A/D,D/A模块转换,构成转速、电流负反馈控制。利用可编程控制器的内置PID模块构成转速、电流PI调节器。通过模拟量输出模块控制电液比例溢流阀,从而控制液粘装置达到调速的目的。
关键词液粘调速 PID控制 A/D, D/A转换
Abstract
The design was based on liquid-viscosity speed governor. The bined it with program-controller,and utilized high-unit to realize digitization speed given instead of traditional machine given. On the basis of speed chart,the designer used PID units to achieve double closed-loop control by making up speed and current regulator. And realized automatic control for mining AC elevator. The flow diagram and the program were designed in the article.
This system uses the PLC rotational speed, the electric current PI double closed loop regulator, through the photoelectricity encoder sampling rotational speed signal, the current transformer in the electric motor stator side sampling electric current signal, passes through the programmable controller A/D, D/A module to transform, constitution rotational speed, electric current negative feedback the programmable controller in to set at the PID module constitution rotational speed, the electric current PI simulation quantity output module control battery solution proportion overflow valve, thus the control fluid sticks the installment to achieve the velocity modulation the goal.
Keywords liquid-viscosity speed governor PID control A/D,D/A transition
目录
摘要 I
Abstract II
第1章液粘技术在煤矿机械中的发展与应用 1
液粘技术的发展 1
液粘传动的性能特点 2
液粘技术的注意问题 2
液粘技术在煤矿机械中的应用 3
第2章系统总体方案设计 7
8
8
8
9
(PLC)特点及选型 10
PLC特点及应用 10
10
11
11
12
第3章可编程控制器各单元工作方式与参数整定 16
CPU单元 16
脉冲输出单元 20
参数的脉冲化分类 20