基于PLC和AD轉(zhuǎn)換的穩(wěn)流和續(xù)流實現(xiàn) 

王建新，吳獻東，黃云樞

溫州出入境檢驗檢疫局 低壓電器實驗室，浙江 溫州 325604 
 

摘要：針對低壓電器特性檢測的電源需求特點，提出了可編程序控制器PLC配合AD轉(zhuǎn)換實現(xiàn)穩(wěn)流的一種控制方法，并給出了一種實現(xiàn)續(xù)流的設(shè)計方案，介紹了該方案的硬件組成、預(yù)檢調(diào)壓器動作特性、運行阻抗續(xù)流的計算以及預(yù)檢調(diào)壓器特性參數(shù)方式的優(yōu)缺點。實際運行情況表明，該方式結(jié)構(gòu)簡單、運行穩(wěn)定，有利于降低成本和易于維護。
關(guān)鍵詞：低壓電器；特性檢測；可編程序控制器；穩(wěn)流；續(xù)流
中圖分類號：TM571.6+1 文獻標(biāo)識碼：B 文章編號：1007-3175(2013)07-0047-03

Realization of Stabilized Current and Follow Current Based on Programmable Logic Controller and Analog Digital Conversion 

WANG Jian-xin, WU Xian-dong, HUANG Yun-shu 
Low-Voltage Apparatus Testing Lab, Wenzhou Entry—Exit Inspection and Quarantine Bureau, Wenzhou 325604, China 
 

Abstract: Considering the requirements of characteristic test of low-voltage electrical apparatus, this paper presented a kind of control method using the programmable logic controller (PLC) and analog digital (AD) conversion module to stabilize current and gave a kind of design plan to realize follow current. Introduction was made to the hardware, operating characteristic of pretest booster, calculation of follow current of operating impedance, and advantages and disadvantages of characteristic parameter mode of pretest booster. Actual operation shows that the method has the advantages of simple structure, stable operation, low cost and easy maintenance.
Key words: low-voltage electrical apparatus; characteristic test; programmable logic controller; stabilized current; follow current

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