Kuti mumvetse zovuta za kukana kwamkati ndi kulepheretsa, ndikofunikira kuzindikira kuti kulepheretsa kumagwirizana ndi AC (alternating current), pomwe kukana kwamkati kumalumikizidwa kwambiri ndi DC (chindunji chapano). Ngakhale kuti ali ndi zosiyana, kuwerengera kwawo kumatsatira njira yofanana, R = V / I, kumene R ndi kukana kwamkati kapena kusokoneza, V ndi magetsi, ndipo ine ndiripo.
Kukaniza Kwamkati: Cholepheretsa Kuyenda kwa Electron
Kukana kwamkati kumabwera chifukwa cha kugunda kwa ma elekitironi ndi latisi ya kondakitala, kusintha mphamvu yamagetsi kukhala kutentha. Ganizirani kukana kwamkati ngati mtundu wa mikangano yomwe imalepheretsa kuyenda kwa ma elekitironi. Muzochitika zomwe kusinthasintha kwapano kumayenda kudzera pa chinthu chopinga, kumatulutsa kutsika kwamagetsi. Dontho ili limakhalabe mu gawo ndi lamakono, kusonyeza mgwirizano wachindunji pakati pa kutuluka kwaposachedwa ndi kukana kwamkati komwe kumakumana.
Impedance: Lingaliro Lokulirapo Lophatikiza Kukaniza Kwamkati
Impedans imayimira mawu omveka bwino omwe amaphatikiza mitundu yonse yotsutsana ndi kutuluka kwa ma elekitironi. Izi zikuphatikiza osati kukana kwamkati, komanso kuchitapo kanthu. Ndilo lingaliro lopezeka paliponse lomwe limapezeka pazigawo zonse ndi zigawo.
Ndikofunikira kusiyanitsa pakati pa reactance ndi impedance. Reactance imatanthawuza kutsutsa komwe kumaperekedwa ku AC pano ndi ma inductors ndi ma capacitor, zinthu zomwe zimasiyanasiyana pamitundu yosiyanasiyana ya batri. Kusiyanasiyana kumeneku kumawonekera muzithunzi zosiyana ndi mphamvu zamagetsi zamtundu uliwonse wa batri.
Kuti tipewe kusokoneza, titha kutembenukira ku mtundu wa Randles. Chitsanzochi, chomwe chikuwonetsedwa mu Chithunzi 1, chimaphatikizapo R1, R2, pamodzi ndi C. Mwachindunji, R1 ikuyimira kukana kwamkati, pamene R2 ikugwirizana ndi kukana kutengerapo ndalama. Kuphatikiza apo, C amatanthauza capacitor yamitundu iwiri. Zachidziwikire, mtundu wa Randles nthawi zambiri suphatikiza zomwe zimachitika, chifukwa momwe zimakhudzira magwiridwe antchito a batri, makamaka pama frequency otsika, ndizochepa.
Chithunzi 1: Mtundu wa Randles wa batri yotsogolera ya asidi
Kuyerekeza kwa Internal Resistance ndi Impedance
Kuti tifotokoze, kufananitsa mwatsatanetsatane kwa kukana kwamkati ndi impedance kumafotokozedwa pansipa.
Mbali ya Electrical Property |
Kukaniza Kwamkati (R) |
Kusokoneza (Z) |
Circuit Application |
Amagwiritsidwa ntchito makamaka m'mabwalo omwe akugwira ntchito pa Direct current (DC). |
Amagwiritsidwa ntchito kwambiri m'mabwalo opangira ma alternating current (AC). |
Kukhalapo Kwa Dera |
Zowoneka m'mabwalo osintha apano (AC) ndi Direct current (DC). |
Kupatula ma circuit alternating current (AC), osapezeka mu DC. |
Chiyambi |
Amachokera ku zinthu zomwe zimalepheretsa kuyenda kwa magetsi. |
Zimachokera kuzinthu zosakanikirana zomwe zimatsutsa ndikuchitapo kanthu pamagetsi. |
Kufotokozera Nambala |
Amawonetsedwa pogwiritsa ntchito manambala enieni, mwachitsanzo, 5.3 ohms. |
Kuwonetsedwa kudzera mu manambala enieni ndi zigawo zongoyerekeza, zowonetsedwa ndi 'R + ik'. |
Kudalira pafupipafupi |
Mtengo wake umakhalabe wokhazikika mosasamala kanthu za ma frequency a DC pano. |
Mtengo wake umasinthasintha ndikusintha pafupipafupi kwa AC pano. |
Khalidwe la Gawo |
Simawonetsa gawo lililonse kapena kukula kwake. |
Amadziwika ndi mbali yotsimikizika ya gawo ndi kukula kwake. |
Khalidwe mu Electromagnetic Field |
Imawonetsa kokha kutha kwa mphamvu ikawonetsedwa pagawo lamagetsi. |
Imawonetsa kutha kwa mphamvu komanso kuthekera kosunga mphamvu pagawo lamagetsi. |
Kulondola mu Battery Internal Resistance Measurement
Monga wopereka yankho wokhazikika pakuwunika ndi kuyang'anira mabatire osunga zobwezeretsera, Kugogomezera kwa DFUN pakuyesa kukana kwa batri mkati kumayenderana ndi machitidwe okhazikika amakampani, kukopa chidwi kuchokera ku zida zovomerezeka kwambiri monga Fluke kapena Hioki. Njira zogwiritsira ntchito ngati zipangizozi, zomwe zimadziwika kuti ndizolondola komanso kuvomereza makasitomala ambiri, timatsatira mfundo monga IEE1491-2012 ndi IEE1188.
IEE1491-2012 imatitsogolera pakumvetsetsa kukana kwamkati monga gawo losunthika, zomwe zimafunikira kutsatira mosalekeza kuti tiwone zopatuka kuchokera pazoyambira. Pakadali pano, muyezo wa IEE1188 umakhazikitsa njira yochitirapo kanthu, ndikulangiza kuti ngati kukana kwamkati kupitilira 20% ya mzere wokhazikika, batire iyenera kuganiziridwa kuti ilowe m'malo kapena kuyendetsedwa mozungulira mozama ndikuwonjezeranso.
Kuchoka ku mfundo izi, njira yathu yoyezera kukana kwamkati imaphatikizapo kuyika batire ku frequency yokhazikika komanso yapano, kutsatiridwa ndi sampling yamagetsi. Kukonzekera kotsatira, kuphatikizapo kukonzanso ndi kusefa kudzera mu dera la amplifier, kumapereka muyeso wolondola wa kukana kwamkati. Mwachangu modabwitsa, njirayi imathera mkati mwa 100 milliseconds, kudzitamandira kulondola kodabwitsa kwa 1% mpaka 2%.
Pomaliza, kulondola kwa kuyeza kwa kukana kwamkati kumatsimikizira kuyang'anira bwino kwa mabatire, zomwe zimathandizira kuti azikhala ndi moyo wautali. Bukuli likufuna kuthandiza iwo omwe angapeze zovuta kusiyanitsa pakati pa kukana kwa mkati ndi kulepheretsa, kupangitsa kuti timvetsetse bwino za magetsi awa. Kuti mumve zambiri komanso kumvetsetsa, mutha kufufuza zina zowonjezera kuchokera Malingaliro a kampani DFUN Tech.
