Kodi PWM mu laser processing ndi chiyani?

M'kati mwa laser processing process debugging, nthawi zambiri timawona "PWM" parameter, ndiye zikutanthauza chiyani, tiyeni tiwone lero.

PWM ndi chidule cha "Pulse Width Modulation", yomwe imatchedwa "pulse width modulation" kapena "modulation", ndi njira yothandiza kwambiri yogwiritsira ntchito digito ya microprocessor kuwongolera ma analogi.

The linanena bungwe mumalowedwe a laser makamaka zikuphatikizapo mitundu iwiri: mosalekeza mumalowedwe ndi kugunda mumalowedwe.Mchitidwe mosalekeza ndi kuwombera mosalekeza wa lasers;Pulse mode ndikutulutsa laser nthawi yomweyo nthawi ina iliyonse.Chitsanzo chosavuta, ngati nyali yotulutsa nyali: kuyatsa chosinthira sikuzimitsidwa ndi njira yopitilira;Kuyatsa chosinthira nthawi yomweyo ndikuzimitsa ndikutulutsa kugunda, ndipo njira yoyatsa ndikuyimitsa mobwerezabwereza ndiyo kugunda kwa mtima.Mofananamo, tochi ikasinthidwa ndi laser, pulse mode ndi kubwereza njira yoyatsa ndi kuzimitsa nthawi zonse.

Njira yolunjika kwambiri yopangira laser pulsed ndikuwonjezera moduli ku CW laser kusinthira CW laser kuti mupeze kutulutsa kwamphamvu.PWM (Pulse Width Modulation) ndikusintha makulidwe a pulse posintha kayendetsedwe ka ntchito.

Pamene kusintha magawo ndondomeko ya laser kudula, zimachitika ndi ntchito m'zinthu zambiri ntchito, ndi ntchito ambiri amene sadziwa ndi laser kudula ndondomeko mwina sangamvetse udindo wa magawo awiriwa, ndiyeno kukupatsani mwatsatanetsatane mawu oyamba.

1Nthawi ndi nthawi

Chizindikirocho chimachokera pamwamba mpaka pansi ndikubwereranso kumtunda kwa nthawi ya sabata imodzi

2Kuthamanga kwafupipafupi

Ndi ma cycle angati a PWM omwe amapezeka mu sekondi imodzi

3Pulse duty cycle

Chitsanzo cha chiŵerengero cha nthawi yapamwamba ndi nthawi yonse yozungulira kuzungulira

4Pulse nthawi ndi nthawi

Nthawi ya nthawi yotengedwa kuzungulira

5Kugunda m'lifupi

Nthawi yogwiritsidwa ntchito kwa nthawi yayitali kwambiri

6Mtengo wapamwamba kwambiri

Kutulutsa mphamvu nthawi yomweyo kwa laser mkati mwa kugunda kumodzi

7Avereji yantchito

Kuchuluka kwa mphamvu zomwe laser imatulutsa pobwerezabwereza

Nthawi zambiri, tikamasinthira laser mu laser process debugging, mphamvu yapamwamba, kuthamanga kwafupipafupi ndi kuzungulira kwa ntchito kumayikidwa.Kenako, tiyeni tigwiritse ntchito chitsanzo kufotokoza momwe tingawerengere magawo a PWM.

Pachimake mphamvu ya laser, ntchito kuzungulira kwa kugunda kumawonjezeka, ndipo mphamvu pa kugunda kwa dzuŵa kumawonjezeka moyenerera, zomwe zidzawonjezeke mphamvu yokonza njira ya makulidwe a mbale.Ngati ntchito ya kugunda kwachepa, mphamvu pamtundu uliwonse imawunikiridwa, zomwe zimathandiza kuchepetsa kutentha kwambiri ndi kutaya kutaya.

Popanga zitsulo, mphamvu ya laser imagwiritsidwa ntchito, ndipo ngati mphamvu ya laser nthawi zonse, imakhala yokwera kwambiri, imakhala yochepa mphamvu ya laser iliyonse, choncho tiyenera kudziwa nthawi yoyenera malinga ndi liwiro la processing. pamene mphamvu ya laser ndi yokwanira kusungunula zitsulo.

GW laser yochokera paukadaulo wapampu wa 976nm wazinthu zopitilira fiber laser, zokhala ndi kutembenuka kwamphamvu kwamagetsi owoneka bwino, mtengo wabwino wotuluka, kusinthasintha pafupipafupi mpaka 50kHz, komwe kumagwiritsidwa ntchito kwambiri podula, kuwotcherera, kuyeretsa, kuphimba ndi kupanga zowonjezera.