PLC ndi Stepper Driver Control Principle

2025-08-19

PLC ndi Stepper Driver Control Principle

Mfundo Yoyendetsera Ntchito

Ma Stepper motors amagwiritsidwa ntchito nthawi zambiri poyang'anira malo. Atha kuwongoleredwa ndi kuchuluka kwa ma pulse omwe amatuluka ndi PLC kuti adziwe momwe angayendetsere (ndipo motero mtunda), ndikuwongolera kuthamanga kwagalimoto. Makina amagalimoto a Stepper ndi osavuta, okwera mtengo - otsika mtengo, komanso osavuta kuwongolera, kuwapangitsa kukhala oyenera kugwiritsa ntchito pomwe kuwongolera sikofunikira kwambiri. Pazochitika zowongolera bwino kwambiri, machitidwe owongolera ma servo nthawi zambiri amafunikira.

Dongosolo la stepper limapangidwa ndi dalaivala wa stepper ndi mota ya stepper. The stepper motor imayendetsedwa ndi stepper driver, yomwe imakhala ngati gwero lamphamvu. Dalaivala amawongoleredwa ndi kugunda kwakunja ndi ma siginecha owongolera (muchitsanzo ichi, ma pulses ochokera ku Siemens PLC), potero amawongolera kayendedwe kagalimoto ndi liwiro.

Matanthauzo Afungulo

1. Woyendetsa:Mkhalapakati pakati pa PLC ndi stepper motor. Imakulitsa ma sign a pulse kuchokera ku PLC ndikuwapititsa ku stepper motor, kupangitsa kuti mota igwire ntchito molingana ndi magawo omwe PLC ndi driver.

2. Njira Yoyambira:Ngodya yomwe stepper motor imazungulira ndi kugunda kulikonse. Njira yodziwika bwino ndi 1.8 °, yomwe nthawi zambiri imakhala yosasinthika.

Chitsanzo: Ndi ma pulse angati omwe PLC ikufunika kutulutsa kuti izungulire chopondapo chokhala ndi masitepe a 1.8 ° kudutsa kusinthika kumodzi (360 °) popanda kutsika?

Yankho: 360 ° / X = 1.8 ° / 1 ⇒ X = 200 pulses.

3. Microsteping:Muzogwiritsa ntchito, mbali yayikulu imatha kuyambitsa kugwedezeka kwakukulu ndikuwonjezera zolakwika zowongolera. Microstepping imagawaniza mbali yolowera m'magawo ang'onoang'ono pogwiritsa ntchito masiwichi a DIP a dalaivala, zomwe zimapangitsa kuti magalimoto aziyenda bwino.

Chitsanzo: Ngati ngodya ya masitepe ndi 1.8° ndipo microstepping yaikidwa kukhala 10, ndi ma pulse angati omwe amafunikira kuti mota imalize kutembenuka konse?

Yankho: 360 ° / X = (1.8° / 10) / 1 ⇒ X = 2000 pulses.

Chidule cha nkhani: Masitepe akulu amafunikira ma pulse ochepa, pomwe mbali yaying'ono imafuna mafunde ambiri.

Stepper System Hardware (Kugwiritsa Ntchito Phidgets Stepper Motor monga Chitsanzo)

1. Woyendetsa Stepper

Pulse + Direction Control: Kugunda kukapangidwa ku PUL, mota imazungulira, ndikuwongolera komwe kumadziwika ndi DIR.

Forward Pulse + Reverse Pulse Control: Ma pulse ku PUL amapangitsa injini kuzungulira kutsogolo, pomwe kugunda kwa DIR kumapangitsa kuti izizungulira mobwerera. PUL ndi DIR sayenera kupanga ma pulse nthawi imodzi.

2. Stepper Motor

Pamene mamphepo a gawo la A ndi B asinthidwa, injini imazungulira kwina.

Mphamvu yamagetsi yamagetsi ya stepper ndi 5 V, pamene Siemens PLC ikugwira ntchito pa 24 V. A 1.2 K, 1/4 W resistor iyenera kugwirizanitsidwa mndandanda pamene ikugwirizanitsa ndi dalaivala, monga momwe tawonetsera mu gawo lofiira la chithunzicho.

Siemens PLC (CPU222) imathandizira mitundu iwiri ya zotulutsa zothamanga kwambiri:

PTO (Pulse Train Output) : 50% ntchito yozungulira.

PWM (Pulse - Width Modulation): Ntchito yosinthika yosinthika.

Izi zotulutsa zothamanga kwambiri zitha kugwiritsidwa ntchito kuwongolera dalaivala wa stepper ndikuyenda komanso kuthamanga kwa zida zinazake.