Kev tswj fwm hluav taws xob muaj peev xwm muab faib ua telegraph servo system thiab hluav taws xob lub tsev kawm hluav taws xob tswj kev tiv thaiv. Raws li kev siv hluav taws xob-hydraulic tswj valve siv, electro-hydraulic servo valve yog siv rau qhov hluav taws xob-hydraulic servo system, thiab lub tshuab hluav taws xob-hydraulic feem ntau siv los tswj lub tshuab hluav taws xob-hydraulic kev faib ua feem. Feem ntau ntawm cov tshuab kuaj ntawv siv hluav taws xob electro-hydraulic servo. Kev ua haujlwm tseem ceeb ntawm kev tswj lub zog yog kom sib sau ua ke, sib piv, kho qhov tseeb, thiab ua kom nrov nrov ntawm lub zog yuav cov teeb liab ntawm cov qauv nkag. Rau kev yooj yim ntawm kev siv, nws feem ntau suav nrog cov tswj kev siv fais fab thiab pem hauv ntej teeb liab lub tshuab hluav taws xob xav tau los ntawm tus maub los. Txheem nrog lub chaw nres tsheb hluav taws xob servo valve, lub ntsuas cua tswj tau hu ua servo controller.
Kev tswj hwm hluav taws xob-hydraulic tswj qhov ntsuas hluav taws xob yog ib qho kev hloov ua ke uas hloov cov tswv yim tam sim no ntawm tus tswj hwm kom nrov mus rau hauv lub zog hydraulic, thiab nws cov kev ua tau zoo heev cuam tshuam rau tag nrho cov kab ke. Nws yog qhov tseem ceeb hauv kev tswj hwm hluav taws xob-hydraulic. Muaj ob hom electro-hydraulic tswj valve: electro-hydraulic servo valve thiab electro-hydraulic proportional valve. Electro-hydraulic servo li qub tau siv dav hauv tshuab kuaj. Electro-hydraulic proportional li qub tau pib siv rau hauv kev tshuaj ntsuam xyuas thoob ntiaj teb rau kev ntsuas kev ua haujlwm zoo li qub thiab rov ua haujlwm rau hydraulic kheej kheej. Lub tog raj kheej hydraulic txais lub siab cov roj tawm los ntawm servo valve kom lub piston rov qab qhov zoo raws li qhov xav tau. Cov ntawv xeem feem ntau yog ntsia rau qhov kawg ntawm lub pas nrig piston, thiab lub tshuab tso tawm siab hydraulic siab ntawm kev cuam tshuam rov qab hydraulic lub tog raj kheej siv zog tawm ntawm daim xeem. Lub caij kuaj pom muaj xws li lub ntsuas pa thiab nws qhov ntsuas zog. Qhov loj me ntawm tus neeg raug iab liam me me tau kuaj pom los ntawm kev kuaj pom khoom. Raws li cov lus nug ntawm lub hnub qub liam, lub zog yuav tuaj yeem hloov chaw sensors, quab yuam sensors, siab sensors, accelerator sensors, thiab lwm yam.
