Rau cov neeg siv khoom uas yuav thiab siv cov twj siv dej ua haujlwm, lub zog zoo ncaj qha txiav txim siab lub twj tso kua mis ua haujlwm ruaj khov, lub neej ntev, thiab cov nqi tu. Daim ntawv tshaj tawm kev tshaj lij kev ntsuas hluav taws xob zoo yog lub hauv paus tseem ceeb rau kev txiav txim siab seb lub zog ib puag ncig puas haum rau cov khoom siv. Ntau tus neeg siv, tom qab tau txais daim ntawv tshaj tawm, yog qhov poob thaum ntsib nrog cov kab kos thiab cov ntaub ntawv nyuaj. Tom ntej no, peb yuav piav qhia cov kauj ruam -los ntawm- kauj ruam yuav ua li cas kom nkag siab txog ob lub ntsiab lus tseem ceeb: kev sib haum xeeb thiab cov kab kos duab, siv cov dej twj tso kua mis tiag tiag ua piv txwv.
Ua ntej, cia peb qhia meej cov ntsiab lus yooj yim. Cov twj tso kua dej muaj feem ntau siv cov tsav tsheb sib txawv, uas yooj yim tsim cov phiaj xwm sib haum xeeb thaum ua haujlwm. Harmonics tuaj yeem ua rau lub cev muaj zog cua sov, hnav cov kabmob, thiab cuam tshuam rau cov khoom siv hluav taws xob. Nyob rau lub sijhawm ntev, qhov no tuaj yeem ua rau lub twj tso kua mis tripping, txo cov zis tawm, thiab nce qhov ua tsis tau zoo. Qhov no yog lub hom phiaj ntawm kev ntsuas hluav taws xob zoo.
Cia peb xub txhais daim ntawv qhia kev sib haum xeeb. Hauv hom kab ntawv no, kab rov tav axis sawv cev rau kev sib haum xeeb, thiab ntsug axis sib haum rau cov ntsiab lus sib haum xeeb, intuitively nthuav qhia qhov amplitude feem pua ntawm txhua qhov kev sib haum xeeb. Raws li kev ua haujlwm ib txwm muaj, 3rd, 5th, thiab 7th harmonics yog qhov tseem ceeb tshaj plaws ntawm kev cuam tshuam rau cov twj tso kua dej thiab yog qhov tseem ceeb uas peb yuav tsum tau kuaj xyuas. Cov qauv kev lag luam feem ntau xav kom cov ntsiab lus sib haum xeeb ib leeg yuav tsum tswj tau nyob rau hauv qhov tsim nyog, thiab tag nrho cov kev sib haum xeeb tsis sib haum xeeb (THDi) yog qhov taw qhia tseem ceeb. Yog tias qhov qis - xaj cov khoom sib haum xeeb hauv cov spectrum siab heev, nws qhia tau hais tias kev sib hloov ntawm kab sib chaws loj heev, uas, nrog rau kev siv sij hawm ntev -, yuav ua rau kev laus ntawm cov dej twj tso kua mis lub cev muaj zog rwb thaiv tsev thiab ua rau muaj kev pheej hmoo ntawm coil luv circuits. Ib txhij, soj ntsuam cov waveform faib; chaotic spectrum nrog ntau lub ncov tseem ceeb qhia tau tias muaj kev hloov pauv loj hauv lub zog ib puag ncig, uas tseem yuav cuam tshuam rau kev ceev tswj qhov tseeb ntawm cov twj tso kua dej ntau zaus. Thaum yuav cov cuab yeej txhawb nqa lossis ua rau ntawm - qhov hloov kho qhov chaw, cov khoom siv lim dej sib xyaw tuaj yeem sib phim raws li hom kev sib haum xeeb tshaj li tus qauv hauv spectrum.
Tom ntej no, cia peb saib ntawm daim duab qhia. Nws tsom rau kev sau cov kev hloov pauv ntawm cov hluav taws xob tsis zoo nyob rau lub sijhawm. Kab rov tav axis sawv cev rau lub sijhawm tshawb pom, thiab lub axis ntsug sawv cev tiag tiag - lub sijhawm muaj nuj nqis xws li qhov hluav taws xob, tam sim no, thiab kev sib haum xeeb. Hom kab ntawv no qhia txog cov qauv hloov pauv ntawm lub zog thauj khoom thiab tsim nyog rau cov xwm txheej uas muaj 24-teev ntau lawm thiab sijhawm- sib koom pib- nres ntawm cov twj tso dej hauv cov chaw tsim khoom. Ib tug du, fluctuating nkhaus yog ib txwm, qhia tau hais tias ib tug ruaj khov daim phiaj fais fab mov thiab muaj kev nyab xeeb, tsis tu ncua kev khiav dej num ntawm lub twj tso kua mis. Nquag heev nce thiab ntog, nrog loj spikes los yog precipitous te, qhia ib tug tsis ruaj tsis khov daim phiaj fais fab load. Lub twj tso kua mis nquag pib thiab nres, thiab kev hloov pauv zaus, yuav ua rau lub twj tso kua mis mus rau tam sim no surges, ua rau lub suab nrov ua haujlwm thiab muaj peev xwm ua rau lub tshuab hluav taws xob puas. Peb pom zoo kom tsom mus rau cov ntaub ntawv sib txawv thaum lub sijhawm ua haujlwm puv, vim tias theem no zoo tshaj plaws qhia txog qhov chaw ua haujlwm tiag tiag.
Qhov kev txiav txim siab raws li kev siv dej twj tso kua mis yog raws li hauv qab no: ua ntej, siv tag nrho cov harmonic distortion (THD) tus nqi los txiav txim tag nrho lub zog zoo; tom qab ntawd, siv cov spectrum tsom xam los txheeb xyuas cov hom kev sib haum xeeb tshaj li cov qauv; Thaum kawg, siv qhov kev tsom xam los daws teeb meem tam sim ntawd hloov pauv. Yog tias cov ntaub ntawv xeem dhau ntawm tus qauv ntau, cov lim dej siv hluav taws xob thiab cov hluav taws xob hluav taws xob tuaj yeem siv los ua kom zoo tshaj qhov hluav taws xob ib puag ncig.
Lub hauv paus ntawm siab - dej twj tso kua mis zoo yog lub zog ruaj khov ib puag ncig. Txawm li cas los xij, los ntawm kev nkag siab ntawm tsab ntawv ceeb toom no peb tuaj yeem zam kev puas tsuaj rau peb cov cuab yeej siv, txo qis vim qhov tsis muaj thiab txawm tias ua rau lub neej ntev ntawm lub twj tso kua mis nws tus kheej.
