Nrog rau kev loj hlob sai ntawm kev lag luam tsheb, kev nyab xeeb kev ua haujlwm tau dhau los ua ib qho tseem ceeb rau cov neeg siv khoom thaum yuav tsheb. Raws li lub hauv paus tseem ceeb ntawm kev ruaj ntseg tsheb niaj hnub no, ABS (anti-lock braking system) tau siv dav thoob ntiaj teb txij li thaum nws pib. Tsab ntawv xov xwm no yuav qhia txog cov ntsiab lus ntawm kev ua haujlwm, kev ua haujlwm zoo thiab qhov tseem ceeb ntawm ABS system hauv kev lag luam txawv teb chaws.
Lub luag haujlwm tseem ceeb ntawm ABS system yog tiv thaiv lub log los ntawm kev xauv lub sijhawm thaum muaj xwm txheej ceev, yog li tswj lub tsheb tswj kev ruaj ntseg thiab ruaj khov. Cov tsoos braking systems yog qhov yooj yim rau lub log xauv thaum muaj xwm txheej ceev, ua rau lub tsheb tsis muaj peev xwm tswj tau thiab ua rau muaj kev sib tsoo lossis kev sib tsoo. Lub ABS system saib xyuas lub log nrawm ntawm lub sijhawm tiag tiag los ntawm chav tswj hluav taws xob, thiab hloov kho lub zog nres thaum nws pom tias lub log yuav raug kaw, yog li lub log tseem nyob rau hauv lub xeev tseem ceeb ntawm kev yuav xauv tab sis tsis xauv. Txoj kev ntse braking no txhim kho kev nyab xeeb ntawm lub tsheb ntawm txoj kev nplua los yog thaum muaj xwm txheej ceev.
Los ntawm kev pom kev, ABS system muaj peb ntu: lub log nrawm sensor, chav tswj hluav taws xob hluav taws xob (ECU) thiab cov cuab yeej hloov kho hydraulic. Lub log ceev sensor yog lub luag haujlwm rau kev saib xyuas lub sijhawm ntawm lub log ceev, ECU suav cov phiaj xwm kev siv lub zog kom zoo raws li cov ntaub ntawv sensor, thiab cov cuab yeej hloov kho hydraulic hloov lub siab nres raws li cov lus qhia ntawm ECU. Cov txheej txheem no ua tiav nyob rau hauv milliseconds, kom ntseeg tau tias kev sib tsoo zoo thiab raug.
Hauv kev lag luam thoob ntiaj teb kev lag luam txawv teb chaws, ABS system tau dhau los ua ib qho ntawm cov txheej txheem thev naus laus zis rau kev xa tawm tsheb. Raws li lub teb chaws txuas ntxiv txhim kho lawv cov qauv kev nyab xeeb tsheb, qhov nrov ntawm ABS system tseem nce ntxiv. Tshwj xeeb tshaj yog nyob rau hauv kev lag luam xws li Europe thiab North America, ABS system tsis yog tsuas yog yuav tsum tau teeb tsa rau cov qauv tshiab, tab sis kuj yog ib qho kev ntsuas tseem ceeb rau kev siv tsheb. Rau cov tuam txhab lag luam txawv teb chaws, kev paub txog cov yam ntxwv thiab kev ua lag luam ntawm ABS system yuav pab txhim kho cov khoom sib tw thiab ua tau raws li kev xav tau kev nyab xeeb ntawm cov neeg siv khoom thoob ntiaj teb.
Nyob rau hauv lub neej yav tom ntej, nrog rau kev loj hlob sai ntawm kev txawj ntse tsav tsheb, ABS system yuav txuas ntxiv nrog cov thev naus laus zis xws li ESP (Electronic Stability Program) thiab EBD (Electronic Braking Force Distribution) los muab cov neeg siv khoom thoob ntiaj teb nrog kev tiv thaiv kev nyab xeeb dua.
