设计简介
摘 要
窗体顶端中央空调系统已广泛应用于工业和民用领域,在宾馆,酒店,写字楼,商场,住宅楼,在中央空调系统的工业厂房,其制冷压缩机,制冷循环水系统,冷却水系统,冷却塔风扇系统,最大冷却能力,制热负荷的选择,将具有足够的余量。在控制系统中与动态调节的特性无负荷,电动机的功率是固定的在全速和电动机的能量以全速运行。近年来,由于电价上涨,导致中央空调系统的运行费用大幅上涨,导致它占据越来越大的比例的运行费用在整个建筑,再加上目前的生产和服务行业竞争激烈,大多数企业都是不理想的利润空间。因此,电能成本的控制显然是管理者一个关注的问题。随着负载自动调节的变频变频空调水系统和压缩机系统的自适应智能负载调节的变化应运而生,并逐渐显示出其巨大的优势,并得到越来越广泛的普及和应用。随着PLC技术和变频器的发展,变频调速技术不仅能使空调系统发挥更加理想的工作状态,同时还可以节约能源和水资源。
关键词:中央空调 资源 PLC 意义
Abstract
With development of all kind of science technology and global economy, Pneumatic manipulator is a automated devices that can mimic the human hand and arm movements to do something,aslo can according to a fixed procedure to moving objects or control tools. It can replace the heavy labor in order to achieve the production mechanization and automation, and can work in dangerous working environments to protect the personal safety.Therefore widely used in machine building, metallurgy, electronics, light industry and atomic energy sectors.The pneumatic part of the design is primarily to reasonablepneumatiatcompressedneceengththdirectionprocedurework.The inverted pendulum is a typical high order system, with multi variable, non-linear, strong-coupling, fleet and absolutely instable. It is representative as an ideal model to prove new control theory and techniques. During the control process, pendulum can effectively reflect many key problems such as equanimity, robust, follow-up and track, therefore.
This paper use Plc control method of double inverted pendulum .This several test matrix value the results are not satisfactory response, then we optimize matrix by using Genetic Algorithm. Simulation results show: The system response can meet the design requirements effectively after Genetic Algorithm optimization. Small twisted paper broken machine for ordinarhome.
Keywords:sewingmachine, assembly,Plc,meaning
目 录
摘 要 I目 录 II
1 绪 论 1
1.1 中央空调系统简介 2
1.2 应用PLC控制系统的优点 3
2 PLC控制系统简介 6
2.1 PLC简介 7
2.2 PLC的控制过程 7
2.3 变频器的控制方式及分类 9
2.4 变频器的选型 10
2.4.1 变频器简介 10
3 基于PLC的中央空调控制系统硬件的设计 10
3.1 主电路的控制设计 11
3.2 变频器的控制方式 11
3.3 元器件的选型 12
3.4 I/O分配表的设计 12
3.5 PLC控制接线图的设计 13
4 基于PLC的中央空调控制系统软件的设计 13
4.1 梯形图程序的设计 14
4.2 系统工作流程图的设计 14
结 论 15
致 谢 16
参考文献 17





