(1) qhov system servo: tej khoom yog qhov chaw, qhov chaw, tus txheej txheem tso tawm, ua raws li cov lus qhia (los yog tus nqi muab) hloov ntawm cov kev tswj tsis siv neeg.
(2) nyob rau hauv qhov kev tswj tsis siv neeg, tswj teb rau qee qhov tseeb ntawm qhov tseeb los tswj cov teeb liab system, lub npe hu ua servo systems, tseem hu ua servo systems.
Servo lub hom phiaj tseem ceeb tau thov los ntawm kev tswj commands, zoom, txia thiab tswj lub hwj chim, tsav tso zis torque, kev ceev thiab txoj hauj lwm tswj yooj ywm thiab yooj yim.