描述

1784-u2dn/a

目前工業(yè)自動化水平已成為衡量各行各業(yè)現(xiàn)代化水平的一個重要標(biāo)志。同時，控制理論的發(fā)展也經(jīng)歷了古典控制理論、現(xiàn)代控制理論和智能控制理論三個階段。智能控制的典型實(shí)例是模糊全自動洗衣機(jī)等。自動控制系統(tǒng)可分為開環(huán)控制系統(tǒng)和閉環(huán)控制系統(tǒng)。一個控制系統(tǒng)包括控制器、傳感器、變送器、執(zhí)行機(jī)構(gòu)、輸入輸出接口?？刂破鞯妮敵鼋?jīng)過輸出接口、執(zhí)行機(jī)構(gòu)，加到被控系統(tǒng)上；控制系統(tǒng)的被控量，經(jīng)過傳感器，變送器，通過輸入接口送到控制器。不同的控制系統(tǒng)，其傳感器、變送器、執(zhí)行機(jī)構(gòu)是不一樣的。比如壓力控制系統(tǒng)要采用壓力傳感器。電加熱控制系統(tǒng)的傳感器是溫度傳感器。目前，PID控制及其控制器或智能PID控制器（儀表）已經(jīng)很多，產(chǎn)品已在工程實(shí)際中得到了廣泛的應(yīng)用，有各種各樣的PID控制器產(chǎn)品，各大公司均開發(fā)了具有PID參數(shù)自整定功能的智能調(diào)節(jié)器 (intelligent regulator)，其中PID控制器參數(shù)的自動調(diào)整是通過智能化調(diào)整或自校正、自適應(yīng)算法來實(shí)現(xiàn)。有利用PID控制實(shí)現(xiàn)的壓力、溫度、流量、液位控制器，能實(shí)現(xiàn)PID控制功能的可編程控制器(PLC)，還有可實(shí)現(xiàn)PID控制的PC系統(tǒng)等等。 可編程控制器(PLC) 是利用其閉環(huán)控制模塊來實(shí)現(xiàn)PID控制，而可編程控制器(PLC)可以直接與ControlNet相連，如Rockwell的PLC-5等。還有可以實(shí)現(xiàn) PID控制功能的控制器，如Rockwell 的Logix產(chǎn)品系列，它可以直接與ControlNet相連，利用網(wǎng)絡(luò)來實(shí)現(xiàn)其遠(yuǎn)程控制功能。

產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價格，大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊

PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家