Steppinｇ ｍｏtoｒ control sｙstem based on ＰLCﻩ
Ａbstract
With the deｖｅｌopment of microeｌectrｏnics aｎｄ computer ｔeｃhnｏlogｙ， t
ｈe sｔeppｅr motoｒ is ｉncreasｉng demａndｅｄ, which ｉｓ wiｄely used in pri
ｎteｒｓ， eleｃtric tｏys anｄ ｏｔhｅｒ coｎsumer producｔs, and CNC machｉnｅ
ｔoｏls, ｉnｄｕsｔriａl roｂｏｔｓ, medicaｌ ｅquｉpment aｎd ｏtheｒ elｅｃtrica
ｌ maｃhineｒy producｔs, and iｓ aｐplied iｎ the national ecoｎomy in ｖａrious f
ｉｅldｓ。 Researcｈｉng of ｓtｅｐpｅr ｍoｔor cｏnｔrol sysｔem to imprｏvｅ
the cｏntrol ａccuraｃy aｎｄ response sｐeｅｄ， eneｒgy coｎservａｔiｏn is ｓｏ
imporｔａｎt。
Ｓteｐｐeｒ mｏtor ｉs a dｅｖice wｈicｈ wｉll transform eｌecｔｒical ｐulse
ｓ ｉnto mｅchanicaｌ aｎｇular diｓpｌａcement so thaｔ Ｓhaｆt of eａch pulse tｏ a
step ａngｌe stｅppｉng inｃrement, SO ｏｕtｐuｔ aｎgｕｌａｒ ｄisplacement is ｐ
roportｉonal to the input pulｓｅｓ, ｓpeｅd is pｒｏｐortiｏnａl to the iｎput ｐulse spee
ｄ ａnd speed is propｏrｔional ｔo input puｌse frequency． Stepper motor conｔroｌ i
ｓ simpｌe， is open-looｐ coｎtｒoｌ， and no accｕｍulation ｏf posiｔiｏniｎg
ｅｒroｒ, a high ｐosiｔioning accuracy,anｄ ｔhe PＬC ａs an industrial coｎtrｏl
compuｔer, is a pｏweｒful tool ｆｏr the iｎtegratｉoｎ of the ｍoｔor, Ｔhereｆore, the
stｅｐper motor conｔｒｏl based on ＰLC ｔechnology hａｓ bｅｅｎ wｉdeｌｙ use
ｄ fｏr digital pｏsitｉoninｇ ｃonｔroｌ.
Tｈｅ cｏｎｔroｌ ｓysteｍ consists of hａrdwaｒe anｄ soｆｔwaｒe ｄeｓign
of two parts． Ａmong theｍ， ｔhe ｈａrdwaｒe design incｌudes the ｗｏrｋiｎg pri
ｎｃiplｅ oｆ stepper mｏtor, sｔepｐer ｍotor drivｅ circuｉt design, PLC inpuｔ and
oｕｔpuｔ ｃｈaracteｒiｓtics, PLC and PLＣ eｘterｎal ｃiｒｃｕit connecｔion with
the stepｐer ｍｏｔor ａnd matchiｎｇ Ｐroｂｌｅm。 Sｏftｗarｅ desｉｇn, incｌudiｎ
g tｈｅ main ｐrogrａm aｎd each module of the contrｏl ｐrｏｇｒam, ｕltiｍａtely rea
ｌｉzes on the ｓｔｅpｐｅｒ motor ｒoｔatｉon dirｅｃtioｎ and roｔatｉoｎ ｓpe
ｅd ｃoｎtroｌ Thiｓ sysｔeｍ hａs the intelligｅncｅ， ｐrａcticａｌitｙ aｎd ｒｅli
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