Peb feem ntau xav txog seb cov hlau nplaum nyiam cov khoom hlau. Lawv tsis muaj tsawg dua li lub neej tiag tiag, tshwj xeeb yog cov hloov pauv thiab seb lawv muaj zog peb li. Tag nrho cov khoom siv peb siv yog ib qho ntawm cov hlau nplaum ntawm cov hlau nplaum peb hu ua kev sib nqus permeability. Nws yog lub tswv yim ntshiab uas yog lub plawv ntawm ntau tus huab hwm huab hwm loj xws li electromagnetism, electronics, thiab cov khoom siv science.
Yog tias koj xav tias koj yuav tau txais qee qhov kev qhuab qhia dag ntawm no, tsis txhob txhawj xeeb, peb yuav qhia koj qhov kev sib nqus twg yog qhov yooj yim, kev lom zem. Yog li, txawm hais tias koj yog ib tus tub ntxhais kawm lossis tsuas yog kawm tau sijhawm pub dawb ib yam dab tsi, koj yuav pom qhov kev ua haujlwm hauv ntiaj teb tiag tiag li cas.
Hauv cov lus yooj yim, dab tsi yog sib nqus permeability?
Sib nqus permeability yog li cas cov khoom yooj yim tuaj yeem hloov mus rau lwm cov hlau nplaum lossis muaj hlau nplaum. Tsis yog yuav tsum tau ntau dhau ntawm tus kws qhia ntawv hauv lub cev, tab sis nws qhia koj li cas txhua yam yuav ua tau kev sib nqus ntawm cov neeg quab yuam.
Koj yuav tsum paub txog hluav taws xob kev coj zoo, uas qhia tias hluav taws xob yooj yim npaum li cas los ntawm cov hlau. Ib yam li ntawd, kev sib nqus potingsbility qhia seb nws tuaj yeem tig dhau los ntawm cov khoom sib nqus los ntawm cov khoom siv.
Yog li tam sim no, yog tias koj tso cov khoom nyob ze ntawm daim teb sib nqus, yuav ua li cas? Ib qho kev twv twg? Yuav muaj kev vam meej ntawm kev vam meej tsuas yog hais tias yog tias muaj ntau cov khoom txhawb nqa uas teb. Yog tias cov khoom siv tsis kam mus rau hauv tshav pob, ces tsawg dua thiab tsawg dua yuav yog lub permeability.
Peb cia siab tias koj paub lub tswvyim ntawm kev sib nqus permeability rau tam sim no. Txawm hais tias koj tsis tau txhawj. Koj yuav paub thaum peb pib tham txog lub sijhawm sib sib zog nqus pa permeability.
Piv txwv ntawm cov hlau nplaum permeability
Yog li ,, cia peb nqa cov sib nqus permeability rau lub neej thiab kawm seb nws ua haujlwm li cas.
Hlau sticking rau cov hlau nplaum:Cia peb hais, rau ib qho tseem ceeb, muaj tus ntsia hlau hlau hauv ib txhais tes thiab cov hlau nplaum hauv lwm qhov. Thaum koj maj mam coj lawv ua ke, koj yuav hnov lub zog ntawm kev nyiam ntawm koj txhais tes qhov twg cov hlau nplaum yuav nyiam cov hlau ntsia hlau rau nws tus kheej. Tam sim no, qhov no txhais tau tias muaj siab sib nqus permeability, uas teb tau rau siab rau cov sib nqus siab.
Ntoo thiab Hlau nplaum:Dab tsi yog ntoo? Koj puas tau ntsib cov ntoo nrog cov hlau nplaum? Tau kawg tsis. Cov ntoo tsis muaj kev sib nqus permeability piv txwv li piv rau cov hlau hlau lossis hlau.
Nco tseg: Tus yam ntxwv zoo tshaj plaws ntawm kev sib nqus permeability yog tus hloov pauv. Transformer cores yog ua los ntawm cov hlau tshwj xeeb nrog cov kev sib xyaw siab tshaj plaws, uas ua haujlwm tau zoo kawg nkaus hauv kev sib tw teb kom ua tiav lawv cov ntawv thov.
Yog li seb puas muaj cov hlau nplaum nplaum rau ib yam dab tsi lossis tsis yog, nws tsis yog hais txog cov hlau nplaum; Nws yog hais txog seb ib yam dab tsi dhau los sib nqus teb los ntawm nws lossis tsis.
Dab tsi ua science hais txog kev sib nqus permeability?
Tam sim no, cia peb los mus rau hauv qhov kev tshawb fawb. Kuv cog lus rau koj tias nws yuav tsis boring txhua.
Thaum peb tham txog cov permeability ntawm ib yam dab tsi lossis cov khoom siv, nws yog muab los ntawm ib qho kev sib npaug uas hais tias:μ=H/B
● Ntawm no μ (mu) hais txog kev sib nqus permeability.
● B yog hais txog sib nqus flux ntom heev, uas qhia tau tias muaj cov sib nqus muaj zog nyob ib ncig ntawm cov khoom siv.
● Nws hais txog kev sib nqus teb lub zog, uas yog lub sib nqus teb tau thov los ntawm sab nraud thiab nws muaj zog npaum li cas.
Dab tsi yog qhov sib txawv ntawm kev sib txawv ntawm permeability thiab txheeb ze permeability?
Muaj ob hom permeability.
Tsis muaj permeability:Nws yog tus nqi ntawm permeability uas peb siv thaum cov khoom siv tshwj xeeb yog nyob ntawm tes. Nws lub cim yog "μ."
Tus txheeb ze permeability:Tam sim no, tham txog kev txheeb ze preatability, uas yuav tau txais me ntsis nyuaj, tab sis tsis txhob txhawj. Nws muab piv rau cov permeability ntawm qee yam hauv qhov chaw pub dawb; Peb tuaj yeem hais lub tshuab nqus tsev muaj ib qho kev siv hluav taws xob muaj feem ntawm qhov sib npaug: μ {{} é} π × × × π × × × × 10 h / m
Yog li, cov txheeb ze sib npaug yuav yog: μ {= μo
Yog tias muaj cov khoom siv nrog μᵣ> 1, nws yuav sawv cev rau qhov nws muaj cov teb sib nqus zoo, uas tseem hu ua Ferromagnetic. Yog hais tias μᵣ <1, ces nws yuav qhia qhov tsis muaj zog lossis tsis muaj peev xwm sib nqus teb, uas paub ua txoj kab sib txawv.
Cov Khoom Uas Muaj Hlau nplaum raws li permeability
Tam sim no, ntawm no yog ntu ntu ntu uas koj yuav pom txhua yam kev txaus siab. Tham txog cov ntaub ntawv, tom qab ntawd lawv teb sib sib sib zog nqus nyob ntawm lawv cov permeability. Yog tias peb rhuav lawv mus rau ntau qhov sib txawv, koj yuav paub zoo dua li lawv ua haujlwm.
1. Ferromagnetic Cov Ntaub Ntawv
Cov ntaub ntawv ferromagetic yog qhov muaj heev thiab muaj kev sib txheeb siab heev permeability. Xws li ib hom khoom siv zog nyiam hauv cov teb sib nqus thiab muaj peev xwm txawm tias, qhov tseeb, hloov kho rau lub sijhawm thaum lub teb raug tshem tawm.
Piv txwv: nws suav nrog cov hlau, npib tsib xee, cobalt, thiab lwm yam.
2. Paramagnetic Cov Ntaub Ntawv
Cov ntaub ntawv paramagagnetic yog ib feem ntawm cov khoom sib nqus ntau dua li qhov ruaj khov. Xws li cov khoom siv tsis tswj lossis txais yuav cov hlauetism thaum lub teb raug tshem tawm. Lawv tus txheeb ze sib npaug yuav tsuas yog me ntsis ntau dua 1.
Piv txwv: suav nrog aluminium, platinum, magnesium, thiab lwm yam.
3. Diam Cov Ntaub Ntawv
Xws li cov khoom siv yog me ntsis cem los ntawm daim teb sib nqus es tsis yog nyiam nws. Nws tus neeg txheeb ze permeability yog tsawg dua 1, uas piav qhia yog vim li cas nws tau repelled los ntawm cov hlau nplaum teb.
Piv txwv: Tooj liab, bismuth, dej, thiab lwm yam.
Qhov tseem ceeb ntawm kev sib nqus permeability
Tham txog kev siv hluav taws xob tsis yog tsuas yog kev qhuab qhia hauv chav kawm physics; Nws yog piv txwv txog qhov tseeb ntawm kev ua haujlwm tshiab niaj hnub no. Ntawm no, nrhiav kom peb tau siv cov pa sib nqus hauvTxhua yam peb siv txhua hnub.
Cov Hluav Taws Xob Hluav Taws Xob thiab Hloov
Mag voos pootability yog siv nyob rau hauv transformers, thiab cov tshuab hluav taws xob muaj thiab cov hluav taws xob ua raws li cov tiaj sib xyaw los tsim thiab hloov lub zog. Cov ntaub ntawv siv nyob rau hauv cov kab ke no muaj siab nyob rau hauv permeability, enabling lub zog hloov zog zoo dua thiab, vim tias ploj mus, txo lub zog poob thiab ua kom sov.
Tiv thaiv los ntawm kev sib nqus sib nqus
Qee cov kws ua lag luam siv cov ntaub ntawv nrog tsawg dua kev sib zog, xws li dav hlau mri scanners. Cov ntaub ntawv zoo li no tau siv los tiv thaiv cov khoom siv los ntawm ib qho ntawm cov sib nqus sab nraud sib dhos.
Cov Ntaub Ntawv Cia Khoom Siv
Peb siv cov nplaum sib nqus thiab cov tsav nyuaj; Tag nrho cov khoom no yog cov ntaub ntawv ferromagnetic. Lawv tau siv los khaws cia lossis txuag cov ntaub ntawv.
Kev siv cov electromagnets
Electromagnets muaj ntau cov siv, xws li hauv cranes thiab sib nqus trans cov kev kos duab (MRI) scanners. Electromagnetism ua haujlwm rau cov khoom siv uas nkag mus rau cov khoom sib nqus me me vim tias lawv cov siab permeability.
Permeability tsis yog ib txwm tas mus li
Tam sim no, muaj lwm txoj kev sib tw koj yuav tsum to taub. Qee yam yam tseem ceeb tuaj yeem ua rau muaj kev sib nqus permeability mus them. Kom nkag siab nws zoo dua, qhia rau kuv paub cov yam ntxwv no yog dab tsi.
Sib nqus suraration
Muaj qhov sib txawv hauv kev sib txawv: cov khoom siv tau ntau npaum li cas tuaj yeem siv sib nqus flux. Yog tias cov hlau, uas yog cov khoom siv tau zoo heev, yog thov rau daim teb sib nqus, nws yuav tau txais kev sib nqus flux.
Nws yog zoo li daim txhuam cev thaum ntub dej. Nws tuaj yeem tuav ntau npaum li cas? Ntau npaum li nws ua tau.
Qhov sib txawv kub
Kub cuam tshuam permeability.
● Yog tias koj kub ferrignetic cov ntaub ntawv, ces lawv cov permeability tuaj yeem txo qis.
Zoo ib yam li ntawd, ntawm qhov kub txav, qhov kawg yuav poob tag nrho nws cov khoom sib nqus thiab tsis muaj kev cuam tshuam rau lub sib nqus.
Zaus txawv
Yog tias qee yam siv lwm txoj kev hloov pauv tam sim no, xws li transformers, permeability tuaj yeem muaj ntau zaus. Xws li rooj plaub ua rau qee qhov tseem ceeb poob uas engineers tseem ua haujlwm los tswj hwm.
Cov lus tseeb lom zem txog kev sib nqus permeability
Tam sim no, txaus ntawm cov equations thiab txhua qhov kev kawm sib txawv, cia peb qhia koj kom lom zem ib feem ntawm kev sib nqus permeability.
● Yog tias peb tham txog lub tshuab nqus tsev, ces nws muaj ib lub baseline permeability. Qhov no txhais tau tias khoob qhov chaw cia liaj sib nqus mus dhau, ua permeability univers contant.
Muaj qee cov ntaub ntawv ntab hauv thaj chaw sib nqus. Zoo li Bismuth thiab graphite, lawv tuaj yeem ua hauj lwm hauv cov ntawv sib nqus muaj zog vim yog diamagnetism.
● Puas tau xav paub tias lawv cov khoom siv hluav taws xob lossis cov twj lab los ntawm lub ntiaj teb sib nqus? Lawv siv MU-hlau, uas muaj cov permeability siab, kom tswj tau lawv cov nyiaj sib npaug thiab txuag lawv ntawm lub ntiaj teb sib nqus.
● Ntiaj teb cov tiaj sib nqus yog tsim los ntawm lub pob loj heev hauv lub hauv ntiaj teb.
Cov FAQ
Yog sib nqus permeability thiab magnetism tib yam?
Tsis yog, lawv tsis yog. Magnetism yog cov khoom ntiag tug ntau dua; Kev tso cai yog ntsuas tau siv nws kab zauv, uas qhia tias cov ntaub ntawv teb rau lub tshav sib nqus.
Peb puas tuaj yeem hloov cov khoom siv sib xws?
Yog lawm, koj tuaj yeem hloov cov khoom siv sib npaug. Txhua yam koj yuav tsum tau ua yog siv cov xwm txheej ntawd uas cuam tshuam rau permeability. Zoo li thov kom sov, kev nyuaj siab, hloov nws cov duab, thiab ntau yam ntxiv.
Vim li cas permeability yog ib qho tseem ceeb rau engeters?
Ib qho ntawm cov laj thawj kev vam meej yog qhov tseem ceeb heev vim tias nws yog tus tseem ceeb ntawm qee cov tshuab tseem ceeb xws li transformers, sensors, thiab lwm yam uas siv cov txheej txheem ntawm electromagnetism. Hauv cov xwm txheej zoo li no, engineers siv cov ntaub ntawv muaj cai nyob rau hauv lawv txoj kev ua tau zoo thiab tiv thaiv pov tseg.
Tag
Sib nqus permeability yog suab zoo li boring science ntsiab lus, tab sis nws yog qhov nthuav heev. Dab tsi ua rau nws muaj peev xwm nthuav yog nws lub luag haujlwm hauv peb lub neej. Peb siv lub zog hluav taws xob uas lub zog peb lub xov tooj, mRI scanners hauv tsev kho mob, thiab txawm tias lub ntiaj teb sib nqus. Tag nrho cov no piav tias yog vim li cas thiaj muaj kev sib nqus permeability tseem ceeb heev rau peb. Yog li, txhua txoj kev paub no tam sim no teb koj cov lus nug, "Dab tsi yog sib nqus perveability?"
