Servo (servomechanism) ndi chipangizo chamagetsi chamagetsi chomwe chimasintha magetsi kuti aziyenda bwino bwino pogwiritsa ntchito njira zopanda mayankho.
Ma Servo angagwiritsidwe ntchito kupanga zoyenda zozungulira kapena zozungulira, kutengera mtundu wawo. Kupanga kwa servo wamba kumaphatikizapo mota ya DC, sitima yamagetsi, potentiometer, dera lophatikizika (IC) ndi shaft yotulutsa. Malo omwe mukufuna servo ndikulowetsamo ndipo amabwera ngati chizindikiro cha IC. IC imatsogolera galimotoyo kuti ipite, kuyendetsa mphamvu ya galimotoyo kupyolera muzitsulo zomwe zimayika liwiro ndi njira yomwe mukufuna kuyenda mpaka chizindikiro chochokera ku potentiometer chikupereka ndemanga kuti malo okhumba afika ndipo IC imayimitsa galimotoyo.
Potentiometer imapangitsa kusuntha koyendetsedwa kotheka potumiza malo omwe alipo pomwe kulola kuwongolera kuchokera ku mphamvu zakunja zomwe zikugwira ntchito paziwongolero: Pomwe pamwamba pasunthika potentiometer imapereka chizindikiro cha malo ndipo IC imawonetsa kusuntha koyenera kwagalimoto mpaka malo olondola abwezeretsedwa.
Kuphatikizika kwa ma servos ndi ma mota amagetsi amagetsi amitundu yambiri kumatha kukonzedwa palimodzi kuti achite ntchito zovuta kwambiri mumitundu yosiyanasiyana yamakina kuphatikiza ma robot, magalimoto, kupanga ndi sensa opanda zingwe ndi ma network a actuator.
Kodi servo imagwira ntchito bwanji?
Ma Servos ali ndi mawaya atatu omwe amachoka pabokosi (Onani chithunzi kumanzere).
Iliyonse mwa mawayawa imagwira ntchito inayake. Mawaya atatuwa ndi owongolera, mphamvu, ndi nthaka.
Waya wowongolera ndi omwe amapereka mphamvu zamagetsi. Galimoto imatembenukira kunjira yoyenera monga momwe zimakhalira ndi ma pulses.
Motowo ukazungulira, umasintha kukana kwa potentiometer ndipo pamapeto pake amalola kuti dera lowongolera lizitha kuwongolera kuchuluka kwamayendedwe ndi njira. Pamene shaft ili pamalo omwe mukufuna, mphamvu yoperekera imatseka.
Waya wamagetsi amapereka servo ndi mphamvu yofunikira kuti igwire ntchito, ndipo waya wapansi amapereka njira yolumikizira yosiyana ndi yamakono. Izi zimakulepheretsani kuti musadabwe koma sizikufunika kuyendetsa servo.
Digital RC Servos Kufotokozera
Digital ServoA Digital RC Servo ili ndi njira yosiyana yotumizira ma pulse motor ku servo motor.
Ngati servo ya analogi idapangidwa kuti itumize voteji ya 50 pa sekondi iliyonse, digito ya RC servo imatha kutumiza ma pulse 300 pamphindikati!
Ndi zizindikiro zothamanga kwambiri, kuthamanga kwa galimoto kudzawonjezeka kwambiri, ndipo torque idzakhala yowonjezereka; imachepetsa kuchuluka kwa shuga.
Zotsatira zake, servo ya digito ikagwiritsidwa ntchito, imapereka kuyankha mwachangu komanso kuthamangitsa gawo la RC.
Komanso, ndi ma deadband ochepa, torque imaperekanso mphamvu yogwira bwino. Mukamagwiritsa ntchito digito servo, mutha kumva momwe mukuwongolera.
Ndiroleni ndikupatseni zochitika. Tinene kuti muyenera kulumikiza servo ya digito ndi analogi kwa wolandila.
Mukatembenuza gudumu la analog servo pakati, mudzawona kuti likuyankha ndikutsutsa pakapita kanthawi - kuchedwa kumawonekera.
Komabe, mukatembenuza gudumu la servo ya digito kuchokera pakatikati, mumamva ngati gudumu ndi shaft imayankha ndikukhazikika pamalo omwe mumayika mwachangu komanso bwino.
Analogi RC Servos Kufotokozera
Analogi RC servo mota ndi mtundu wamba wa servo.
Imayendetsa liwiro la mota pongotumiza ndi kutulutsa mphamvu.
Nthawi zambiri, mphamvu yamagetsi imakhala pakati pa 4.8 mpaka 6.0 volts ndipo nthawi zonse ili pamenepo. Analogi imalandira ma pulses 50 pamphindi iliyonse ndipo ikapuma, palibe magetsi omwe amatumizidwako.
Kuthamanga kwa "On" kwautali kumatumizidwa ku servo, kuthamanga kwa injini kumathamanga ndikukweza torque yopangidwa. Chimodzi mwazovuta zazikulu za servo ya analogi ndikuchedwa kwake kuchitapo kanthu ndi malamulo ang'onoang'ono.
Simayendetsa mota mwachangu mokwanira. Komanso, imapanganso torque yaulesi. Izi zimatchedwa "deadband".
Nthawi yotumiza: Jun-01-2022