Keeb kwm
Txij li thaum xyoo 80s ntawm lub xyoo pua 20th, nrog kev txhim kho ntawm kev sib xyaw ua ke, hluav taws xob hluav taws xob thev naus laus zis thiab AC hloov pauv ceev tsav tshuab, cov hlau nplaum ruaj khov AC servo tsav tshuab tau tsim muaj txiaj ntsig. AC servo system tau dhau los ua qhov kev txhim kho tseem ceeb ntawm kev ua haujlwm siab servo tam sim no, kom tus thawj DC servo tau ntsib teeb meem ntawm kev tshem tawm. Tom qab xyoo 90s, AC servo system uas tau ua lag luam nyob rau hauv ntau lub teb chaws thoob ntiaj teb yog tag nrho digitally tswj sine yoj lub cev muaj zog servo tsav. Kev txhim kho ntawm AC servo drives hauv kev sib kis tau hloov nrog txhua hnub dhau mus.
Ua tsaug
(1) Tsis muaj txhuam thiab commutators, yog li nws ua haujlwm ntseeg tau thiab muaj kev xav tau tsawg rau kev tu thiab tu.
(2) Lub tshav kub dissipation ntawm stator winding yog yooj yim dua.
(3) Lub inertia me me, uas yog ib qho yooj yim los txhim kho qhov ceev ntawm qhov system.
(4) Kho kom haum rau lub xeev ua haujlwm ntawm kev kub ceev thiab siab torque.