Yam paub

Keeb kwm ntawm lub cev muaj zog

May 24, 2022 Tso lus

Ua ntej niaj hnub electromagnetic motors, tib neeg tau tshawb xyuas cov motors uas ua haujlwm los ntawm lub zog electrostatic. Thawj lub tshuab hluav taws xob yog cov khoom siv hluav taws xob yooj yim tau piav qhia hauv kev sim los ntawm Scottish yawg Andrew Gordon thiab tus kws sim Asmeskas Benjamin Franklin hauv xyoo 1740. Txoj cai theoretical qab lawv, Coulomb txoj cai, tau tshawb pom tab sis tsis tau luam tawm, los ntawm Henry Cavendish hauv 1771. Txoj cai no tau tshawb pom nws tus kheej los ntawm Charles-Augustin de Coulomb hauv 1785, uas tau luam tawm nws kom tam sim no paub nrog nws lub npe. Vim qhov nyuaj ntawm kev tsim cov high voltages lawv xav tau, electrostatic motors yeej tsis tau siv rau lub hom phiaj tswv yim.

 

Lub invention ntawm electrochemical roj teeb los ntawm Alessandro Volta nyob rau hauv 1799 ua tau rau zus tau tej cov hluav taws xob tam sim no. Hans Christian Ørsted nrhiav tau nyob rau hauv 1820 hais tias ib tug hluav taws xob tam sim no tsim ib tug magnetic teb, uas yuav siv tau ib tug quab yuam ntawm ib tug hlau nplaum. Nws tsuas yog siv ob peb lub lis piam rau André-Marie Ampère los tsim thawj cov qauv ntawm kev sib tshuam ntawm electromagnetic thiab nthuav tawm Ampère txoj cai quab yuam, uas tau piav qhia txog kev tsim cov tshuab quab yuam los ntawm kev sib cuam tshuam ntawm cov hluav taws xob tam sim no thiab cov hlau nplaum. Thawj qhov kev ua qauv qhia ntawm cov nyhuv nrog cov lus tsa suab tau muab los ntawm Michael Faraday hauv xyoo 1821. Ib txoj hlua dai dawb tau dipped rau hauv lub pas dej mercury, uas tau muab tso rau hauv cov hlau nplaum ruaj khov (PM). Thaum ib tug tam sim no tau dhau los ntawm cov hlau, cov hlau tig ib ncig ntawm cov hlau nplaum, qhia tias tam sim no tau nce mus rau ib qho chaw sib nqus sib nqus nyob ib ncig ntawm cov hlau. Lub cev muaj zog no feem ntau pom nyob rau hauv kev sim physics, hloov brine rau (tshuaj lom) mercury. Barlow lub log yog qhov ua kom zoo thaum ntxov rau qhov kev ua yeeb yam Faraday no, txawm hais tias cov thiab zoo sib xws homopolar motors tseem tsis haum rau kev siv tswv yim kom txog rau thaum xyoo pua.

 

220px-Faraday_magnetic_rotation

 

Jedlik's "electromagnetic self-rotor", 1827 (Tsev khaws puav pheej ntawm Kev Ua Yeeb Yam, Budapest). Lub cev muaj zog keeb kwm tseem ua haujlwm zoo kawg nkaus hnub no.

 

Lub tshuab hluav taws xob nthuav tawm rau Kelvin los ntawm James Joule hauv xyoo 1842, Hunterian Tsev khaws puav pheej, Glasgow

Xyoo 1827, Hungarian physicist Ányos Jedlik pib sim nrog electromagnetic coils. Tom qab Jedlik daws cov teeb meem kev sib hloov tsis tu ncua nrog kev tsim cov khoom siv hluav taws xob, nws tau hu nws cov cuab yeej thaum ntxov "electromagnetic self-rotors". Txawm hais tias lawv tsuas yog siv rau kev qhia, xyoo 1828 Jedlik ua qauv qhia thawj lub cuab yeej kom muaj peb lub ntsiab ntawm cov tswv yim DC motors: stator, rotor thiab commutator. Cov cuab yeej ua haujlwm tsis muaj cov hlau nplaum ruaj khov, vim tias cov hlau nplaum ntawm ob qho tib si nyob ruaj ruaj thiab hloov pauv tau tsim los ntawm cov dej ntws los ntawm lawv cov windings.


220px-Jedlik_motor

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