Resonance yog ib qho ntawm feem ntau tshwm sim ntawm lub cev. Qhov tshwm sim ntawm resonance tuaj yeem pom nyob rau hauv txhua yam, hluav taws xob thiab txawm tias thermal systems. Yog tias tsis muaj suab nrov, peb yuav tsis muaj xov tooj cua, TV, suab paj nruag, thiab txawm tias qhov chaw ua si viav vias, tsis hais txog cov kev kuaj mob zoo tshaj plaws uas siv hauv cov tshuaj niaj hnub no. Ib qho ntawm feem nthuav thiab muaj txiaj ntsig hom resonance hauv hluav taws xob Circuit Court yog voltage resonance.
Cov ntsiab lus ntawm lub voj voog resonant
Qhov tshwm sim ntawm resonance tuaj yeem tshwm sim hauv qhov hu ua RLC Circuit Court uas muaj cov khoom hauv qab no:
- R - resistors. Cov khoom siv no, muaj feem xyuam rau lub npe hu ua cov khoom siv hluav taws xob hauv hluav taws xob, hloov hluav taws xob hluav taws xob rau hauv thermal zog. Hauv lwm lo lus, lawv tshem tawm lub zog ntawm Circuit Court thiab hloov mus rau hauv tshav kub.
- L - inductance. Inductance hauvhluav taws xob circuits - analogue ntawm huab hwm coj los yog inertia nyob rau hauv mechanical systems. Cov khoom no tsis pom zoo heev hauv cov hluav taws xob hluav taws xob kom txog thaum koj sim ua qee qhov kev hloov pauv rau nws. Nyob rau hauv mechanics, piv txwv li, xws li kev hloov pauv yog kev hloov ceev. Hauv ib qho hluav taws xob hluav taws xob, kev hloov pauv tam sim no. Yog tias nws tshwm sim rau ib qho laj thawj, qhov inductance cuam tshuam qhov kev hloov pauv hauv Circuit Court.
- C yog ib qho kev xaiv rau cov khoom siv hluav taws xob, uas yog cov khoom siv uas khaws cov hluav taws xob hluav taws xob zoo ib yam li cov khoom siv hluav taws xob khaws cia. Ib qho inductor concentrates thiab khaws cov hluav taws xob sib nqus, thaum lub capacitor concentrates nqi thiab yog li khaws cov hluav taws xob hluav taws xob.
Lub tswvyim ntawm lub voj voog resonant
Cov ntsiab lus tseem ceeb ntawm lub voj voog resonant yog inductance (L) thiab capacitance (C). Lub resistor nyiam dampen oscillations, yog li nws tshem tawm lub zog ntawm lub voj voog. Thaum xav txog cov txheej txheem tshwm sim hauv lub voj voog oscillatory, peb tsis quav ntsej nws ib ntus, tab sis nws yuav tsum nco ntsoov tias, zoo li kev sib txhuam quab yuam hauv cov tshuab tshuab, hluav taws xob tiv thaiv hauv circuits tsis tuaj yeem tshem tawm.
Voltage resonance thiab tam sim no resonance
Raws li cov ntsiab lus tseem ceeb txuas nrog, lub resonant Circuit Court tuaj yeem ua tau series thiab sib npaug. Thaum ib tug series oscillatory Circuit Court txuas mus rau ib tug voltage qhov chaw nrog lub teeb liab zaus coinciding nrog lub ntuj zaus, nyob rau hauv tej yam kev mob, voltage resonance tshwm sim nyob rau hauv nws. Resonance nyob rau hauv ib tug hluav taws xob Circuit Court nrog parallel txuasCov ntsiab lus reactive hu ua tam sim no resonance.
Natural zaus ntawm resonant circuit
Peb tuaj yeem ua kom lub cev oscillate ntawm nws qhov ntau zaus. Txhawm rau ua qhov no, koj yuav tsum xub them tus nqi capacitor, raws li qhia hauv daim duab saum toj kawg nkaus ntawm sab laug. Thaum qhov no ua tiav, tus yuam sij raug hloov mus rau txoj haujlwm uas pom hauv tib daim duab ntawm sab xis.
Thaum lub sijhawm "0", tag nrho cov hluav taws xob hluav taws xob khaws cia hauv lub capacitor, thiab tam sim no hauv Circuit Court yog xoom (daim duab hauv qab). Nco ntsoov tias lub phaj sab saum toj ntawm lub capacitor tau them zoo thaum lub phaj hauv qab yog qhov tsis zoo. Peb tsis tuaj yeem pom cov oscillations ntawm cov hluav taws xob hauv Circuit Court, tab sis peb tuaj yeem ntsuas qhov tam sim no nrog ammeter, thiab siv lub oscilloscope los taug qab qhov xwm txheej ntawm lub sijhawm tam sim no. Nco ntsoov tias T ntawm peb daim duab yog lub sijhawm yuav tsum ua kom tiav ib qho oscillation, uas hauv hluav taws xob engineering hu ua "oscillation period".
Tam sim no ntws los ntawm moos (daim duab hauv qab). Lub zog yog pauv los ntawm lub capacitor mus rau inductor. Thaum xub thawj siab ib muag, tej zaum nws yuav zoo li txawv txawv hais tias ib tug inductance muaj lub zog, tab sis qhov no zoo ib yam li lub kinetic zog uas muaj nyob rau hauv ib tug tsiv mass.
Lub zog ntws rov qab mus rau lub capacitor, tab sis nco ntsoov tias tam sim no lub polarity ntawm lub capacitor tau thim rov qab. Hauv lwm lo lus, lub phaj hauv qab tam sim no muaj tus nqi zoo thiab lub phaj saum toj kawg nkaus tus nqi tsis zoo (Daim duabhauv qab).
Tam sim no lub kaw lus rov qab tag nrho thiab lub zog pib ntws los ntawm lub capacitor rov qab mus rau hauv inductor (daim duab hauv qab). Raws li qhov tshwm sim, lub zog rov qab los rau nws qhov chaw pib thiab npaj txhij pib lub voj voog dua.
Qhov zaus oscillation tuaj yeem kwv yees li hauv qab no:
F=1/2π(LC)0, 5,
qhov twg: F - zaus, L - inductance, C - capacitance.
Cov txheej txheem txiav txim siab hauv qhov piv txwv no qhia txog lub cev lub cev ntawm kev ntxhov siab resonance.
Kev Tshawb Fawb Kev Nyuaj Siab
Hauv LC circuits tiag tiag, ib txwm muaj me me ntawm kev tiv thaiv, uas txo qhov nce ntawm qhov tam sim no amplitude nrog txhua lub voj voog. Tom qab ob peb lub voj voog, tam sim no txo qis rau xoom. Cov nyhuv no yog hu ua "sinusoidal signal damping". Tus nqi ntawm qhov tam sim no decays mus rau xoom nyob ntawm seb tus nqi ntawm cov kuj nyob rau hauv Circuit Court. Txawm li cas los xij, qhov kev tiv thaiv tsis hloov qhov zaus oscillation ntawm lub resonant circuit. Yog tias qhov kev tiv thaiv siab txaus, yuav tsis muaj sinusoidal oscillation nyob rau hauv Circuit Court txhua.
Pom tseeb, qhov twg muaj qhov zaus oscillation, muaj qhov ua tau zoo ntawm cov txheej txheem resonant. Peb ua qhov no los ntawm kev suav nrog qhov hloov pauv tam sim no (AC) fais fab mov hauv series, raws li qhia hauv daim duab ntawm sab laug. Lo lus "variable" txhais tau hais tias qhov tso zis voltage ntawm qhov chaw hloov pauv nrog qee yamzaus. Yog tias qhov zaus ntawm cov khoom siv hluav taws xob sib txuam nrog lub ntuj zaus ntawm lub voj voog, qhov hluav taws xob resonance tshwm sim.
Muaj xwm txheej tshwm sim
Tam sim no peb yuav xav txog cov xwm txheej rau qhov tshwm sim ntawm kev ntxhov siab resonance. Raws li pom nyob rau hauv daim duab kawg, peb tau rov qab cov resistor rau lub voj. Thaum tsis muaj ib qho resistor nyob rau hauv Circuit Court, tam sim no nyob rau hauv lub resonant Circuit Court yuav nce mus rau ib tug tej yam siab tshaj tus nqi txiav txim los ntawm cov tsis muaj Circuit Court ntsiab thiab lub zog ntawm lub hwj chim qhov chaw. Kev ua kom lub zog ntawm cov resistor nyob rau hauv lub resonant Circuit Court tsub kom lub siab nyiam rau tam sim no nyob rau hauv lub Circuit Court kom lwj, tab sis tsis cuam tshuam qhov zaus ntawm lub resonant oscillations. Raws li txoj cai, qhov voltage resonance hom tsis tshwm sim yog tias qhov kev tiv thaiv ntawm resonance Circuit Court txaus siab rau R=2 (L / C) 0, 5.
Siv qhov hluav taws xob resonance xa xov tooj cua
Qhov tshwm sim ntawm kev ntxhov siab tsis yog tsuas yog qhov tshwm sim xav paub lub cev. Nws ua lub luag haujlwm tshwj xeeb hauv kev siv thev naus laus zis ntawm kev sib txuas lus wireless - xov tooj cua, TV, xov tooj ntawm tes. Cov transmitters siv los xa cov ntaub ntawv wirelessly yuav tsum muaj cov circuits tsim los resonate ntawm ib zaus rau txhua lub cuab yeej, hu ua tus cab kuj zaus. Nrog rau tus kav hlau txais xov txuas nrog lub transmitter, nws emits electromagnetic nthwv dej ntawm tus cab kuj zaus.
Tus kav hlau txais xov nyob rau lwm qhov kawg ntawm txoj kev transceiver tau txais cov teeb liab no thiab muab nws mus rau qhov tau txais Circuit Court, tsim los ua suab nrov ntawm cov cab kuj zaus. Obviously, tus kav hlau txais xov tau txais ntau lub cim ntawm qhov sib txawvfrequencies, tsis hais lub suab nrov tom qab. Vim muaj lub resonant circuit ntawm lub tswv yim ntawm cov khoom tau txais, tuned rau cov cab kuj zaus ntawm lub resonant circuit, tus receiver xaiv qhov tseeb zaus, tshem tawm tag nrho cov tsis tsim nyog.
Tom qab kuaj pom lub xov tooj cua amplitude modulated (AM) xov tooj cua, lub teeb liab tsawg zaus (LF) muab rho tawm los ntawm nws yog amplified thiab pub rau lub suab reproducing ntaus ntawv. Qhov no yog qhov yooj yim tshaj plaws ntawm xov tooj cua kis tau tus mob thiab rhiab heev rau lub suab nrov thiab cuam tshuam.
Txhawm rau txhim kho qhov zoo ntawm cov ntaub ntawv tau txais, lwm yam, ntau txoj hauv kev ntawm xov tooj cua teeb liab kis tau tus mob tau tsim thiab siv tau zoo, uas kuj yog raws li kev siv cov tshuab resonant tuned.
Kev hloov pauv zaus lossis FM xov tooj cua daws tau ntau yam teeb meem ntawm AM xov tooj cua kis tau tus mob, tab sis qhov no los ntawm tus nqi ntawm kev cuam tshuam rau kev sib kis. Hauv FM xov tooj cua, lub suab kaw lus hauv txoj hauv hluav taws xob tau hloov mus rau hauv cov kev hloov me me hauv cov cab kuj zaus. Cov khoom siv uas ua qhov kev hloov pauv no yog hu ua "modulator" thiab siv nrog lub transmitter.
Raws li, tus demodulator yuav tsum tau ntxiv rau hauv lub receiver kom hloov lub teeb liab rov qab rau hauv daim ntawv uas tuaj yeem ua si los ntawm lub suab nrov.
Ntau cov piv txwv ntawm kev siv hluav taws xob resonance
Voltage resonance raws li lub hauv paus ntsiab lus tseem ceeb kuj tau kos rau hauv circuitry ntawm ntau cov ntxaij lim dej dav siv hauv hluav taws xob engineering kom tshem tawm cov teeb meem teeb meem thiab tsis tsim nyog,smoothing ripples thiab tsim sinusoidal signals.
