Ma brake pedal anti-lock braking system (antilockbrakesystem) yagalimoto imatchedwa ABS. Ntchitoyi ndi kulamulira mphamvu ya braking system ya braking system pamene galimoto ikuphwanyidwa, kuti mawilo asatsekedwe ndi mawilo ndipo ali mumkhalidwe wa kugubuduza ndi kutsetsereka (kuthamanga ndi pafupifupi 20%), kuti atsimikizire kumamatira kwa mawilo ndi pansi. Mphamvu ya mfundo ndi pamtengo wokwanira.
Ntchito ya gudumu liwiro sensa mu ABS ndi kuyeza molondola gudumu kufala chiŵerengero cha galimoto. Kuthamanga kwa gudumu kumazindikira ma frequency (chiwerengero cha kufalikira) kwa gudumu lililonse, ndikutumiza chizindikiro ichi ku kompyuta yamagetsi ya ABS. Liwiro likatsimikizika pamtengo wovotera, pad brake pad imaphwanya dongosolo ndipo dongosolo la ABS limayamba kugwira ntchito. Pamene kompyuta ABS amazilamulira gudumu kumasula kwa kamphindi, gudumu liwiro sensa amatumiza imeneyi siginecha kuti detects kasinthasintha tayala mabuleki kuti azungulira kwa ABS kompyuta kompyuta, kotero kuti ABS amalamulira ananyema PAd kukwaniritsa bwino braking mtunda. Masensa osiyanasiyana othamanga pa gudumu makamaka amaphatikizapo ma magnetoelectric wheel speed sensors ndi Hall-type wheel speed sensor.
Magnetoelectric wheel speed sensor idapangidwa pogwiritsa ntchito maginito amphamvu amagetsi apano. Ndiwosavuta mwamapangidwe, otsika mtengo, osawopa madontho amatope, ndipo safuna zida zogawira mphamvu, ndipo amagwiritsidwa ntchito kwambiri mumayendedwe a anti-lock braking a ABS. Koma palinso zovuta zina, monga mawonekedwe a gawo-mafupipafupi sali apamwamba, pamene liwiro liri lalikulu kwambiri, mawonekedwe a gawo-mafupipafupi a sensa sangathe kupitirira, zomwe zingayambitse mosavuta zizindikiro zabodza. Palinso kulephera kukana kusokoneza ma electromagnetic. Mafunde amtundu woyezedwa molondola ndi analogi oscilloscope ali ngati mawonekedwe a sine function wave, ndipo kukwera kwa chiŵerengero chotumizira magudumu, kumapangitsa kuti chiwongolero chamagetsi chigwire ntchito.
The Hall-type wheel speed sensor imapangidwa pogwiritsa ntchito lingaliro lofunikira la Hall effect. Chizindikiro chake chotulutsa sichiwonongeka mosavuta ndi liwiro la voliyumu yokhazikika komanso mphamvu yamphamvu. Ili ndi mawonekedwe apamwamba kwambiri komanso kuthekera kolimba kwa anti-electromagnetic wave, koma iyenera kukhala ndi zida zogawa magetsi. Anyamata, kotero sensa imapanga miyeso yolondola mwachitsanzo:
Poyamba, lumikizani chingwe cha BNC kumutu wa nthochi kumalo otetezedwa a analogi oscilloscope. Mutu wofiira umagwirizanitsidwa ndi singano monga mlingo wabwino, ndipo mzere wa chizindikiro wa sensa umagwirizanitsidwa. Mutu wakuda wa ziphuphu zakumaso ukhoza kulumikizidwa ndi clip ya alligator kapena singano ngati njira yoyikira pansi.
Tsegulani chida chotulukira pachitetezo cha analogi oscilloscope, ikani chiwopsezo chotuluka pachitetezo kukhala 1X, sinthani zida zamagalimoto zoyimirira kukhala 1V/div, ndikulowetsa nthawi yoyambira pafupifupi 10ms, ndiye mutha kuyisintha molingana ndi tsatanetsatane.
Popeza chojambulira chothamanga chamtundu wa Hall chili ndi zida zosinthira magetsi oyendera magetsi, payenera kukhala magetsi oyendetsedwa ndi DC pafupifupi 11-12V kuti ayang'ane mawonekedwe ake panthawiyi.
Kwezani galimotoyo ndi jack, tembenuzani gudumu, ndikuyesa molondola mawonekedwe amtundu wa sensor sensor ndi oscilloscope yamagalimoto.
Masensa a Hall effect amakhala ndi maginito okhazikika kapena dera lotsekedwa ndi mphamvu yamagetsi yamagetsi pafupifupi kuzimitsidwa, maginito a maginito fan fan impeller amatembenuza kusiyana pakati pa maginito ndi mphamvu yamagetsi, ndipo sichivulazidwa pamene bokosi laling'ono pa nsonga ya maginito limalola mphamvu ya maginito Pamene nthaka imatumizidwa ku Sensa ya Hall, mphamvu ya maginito imasokonekera (chifukwa maginito amasokoneza mphamvu ya maginito) fan impeller imalola maziko a maginito ndi mphamvu yonse ya maginito ya mphepo pamene bokosi lofulumira litsegulidwa ndikutsekedwa, zomwe zimapangitsa Hall effect. Sensa yamphamvu imalumikizidwa ndikuzimitsa ngati chosinthira mphamvu, ndichifukwa chake makampani ena amagalimoto amatchula sensor ya hall effect ndi zida zina zamagetsi zofananira monga chosinthira mphamvu ya holo, chipangizo cha makina ichi kwenikweni ndi Switchgear yapamwamba kwambiri. Chifukwa chake, mawonekedwe amtundu wamawonekedwe a Hall effect sensor kwenikweni amakhala kugunda kumodzi pambuyo pamzake, ndiye kuti, mawonekedwe ake.
Kuthamanga kwa chiŵerengero chotumizira magudumu ndi, kufulumira kwa mawonekedwe a mawonekedwe a mawonekedwe, koma AC yamakono ya kulankhulana kwake imakhala yofanana, kuyambira 0V mpaka 1V. Kuchepetsa liwiro la kuzungulira kwa gudumu, mutha kuwona kuti kuchuluka kwa ma waveform azizindikiro kumachepanso.
Ngati chiwonetsero cha digito cha ABS sensor chili ndi 0 volt yogwira ntchito mulingo wamagetsi, iyenera kufufuzidwa kaye kuti muwone ngati ili ndi magetsi osinthira magetsi. Zimatsimikiziridwa ngati mawonekedwe amtundu wa sensa amatsatira kwambiri chiŵerengero cha gudumu, apo ayi zikuwonetsa vuto wamba.
Nthawi yotumiza: Apr-27-2022