Servo Motor

Izwi rekuti "servo" rinobva pashoko rechiGiriki rinoreva "muranda". "Mota yeservo" inogona kunzwisiswa semota inoteerera murairo wechiratidzo chekudzora: chiratidzo chekudzora chisati chaburitswa, rotor inoramba yakamira; kana chiratidzo chekudzora chaburitswa, rotor inotanga kutenderera pakarepo; kana chiratidzo chekudzora chanyangarika, rotor inomira kutenderera ipapo ipapo. Servo motor imota diki inoshandiswa seactuator muzvishandiso zvekudzora otomatiki. Basa rayo nderekushandura masaini emagetsi kuita angular displacement kana angular velocity ye rotating shaft. Servo motor inozivikanwawo se actuator motor uye inoshandiswa se actuator mu automatic control systems kushandura masaini emagetsi anogamuchirwa kuita angular displacement kana angular velocity output pamota shaft.

Mamota eServo akakamurwa kuita mapoka maviri makuru: AC servo neDC servo.

Chimiro chemota yeAC servo chakafanana nechemota yeAC induction (mota isingachinjiki). Kune mawinding maviri eexcitation Wf uye mawindings ekutonga Wc pa stator, ayo anobviswa munzvimbo nemakona emagetsi e90°. Akabatana nevoltage yeAC inogara iripo. Nekuchinja voltage yeAC kana phase inoshandiswa kuWc, mashandiro emota anogona kudzorwa. Mamota eAC servo ane hunhu hwekushanda kwakasimba, kugona kudzora zvakanaka, kukurumidza kupindura, kunzwa kwakanyanya, uye zviratidzo zvisina kurongeka zvehunhu hwemakanika uye hwekutonga (zvinoda pasi pe10% kusvika 15% uye pasi pe15% kusvika 25% zvichiteerana).

Chimiro chikuru chemota yeDC servo chakafanana nechemota yeDC. Kumhanya kwemota n = E / K1j = (Ua – IaRa) / K1j, apo E iri simba remagetsi reverse electromotive, K inguva isingachinji, j inguva yekufamba nepakati, Ua naIa inguva yekufamba nemagetsi, uye Ra inguva yekudzivirira kumhanya. Nekuchinja Ua kana φ, kumhanya kwemota yeDC servo kunogona kudzorwa. Zvisinei, nzira yakajairika ndeyekudzora voltage yemagetsi. Mumota dzemagetsi dzeDC servo dzinogara dziripo, mhepo inotenderera inotsiviwa nemagineti asingachinji, uye flux φ inguva isingachinji. Mota dzeDC servo dzine hunhu hwakanaka hwemutsetse uye mhinduro yenguva inokurumidza.