Nkag siab Nto Gauss: Vim li cas Kev Tshawb Fawb Qhov Chaw yog qhov tseem ceeb
NtoGauss(Gs) yog qhov sib nqus flux density ntsuas ntawm ib qho tshwj xeeb ntawm cov hlau nplaum saum npoo siv Hall effect sensor. Kev nyeem ntawv txawv heev nrog:
Kev sojntsuam txoj haujlwm txheeb ze rau qhov chaw sib nqus ncej: ntawm qhov chaw ncej, kev nyeem ntawv yog qhov siab tshaj plaws; ntawm tus ncej ntug, nyeem ntawv poob 20-50%.
Qhov deb ntawm qhov chaw: Gauss txo qis kwv yees li ntawm qhov kev ncua deb (xws li 10mm N42 disc nyeem 5,000 Gs ntawm kev sib cuag, 3,000 Gs ntawm 1mm qhov sib txawv, 1,200 Gs ntawm 2mm qhov sib txawv).
Kev sojntsuam kev taw qhia: Hall sensor yuav tsum ua raws li cov kev taw qhia sib nqus; 10℃qaij ua rau 3-5% kev nyeem ntawv yuam kev.
Yog li ntawd, nto Gauss tsuas yog rov ua dua yog tias qhov kev sojntsuam tau tuav hauv lub jig ruaj khov nrog kev sib cuag thiab txoj haujlwm. Rau QC, peb siv cov theem motorized uas tso cov kev sojntsuam ntawm qhov chaw geometric tseeb ntawm txhua lub ntsej muag hlau nplaum nrog ± 0.1mm repeatability. Gauss kev nyeem ntawv yog muab piv rau qhov tshwj xeeb kam rau ua: rau ib pawg ntawm 500 hlau nplaum, peb lees txais yog tias qhov kev nyeem ntawv nruab nrab nyob rau hauv ± 5% ntawm nominal thiab qhov ntau (max-min) yog nyob rau hauv ± 8%.
Surface Gauss muaj txiaj ntsig zoo rau:
Kev txheeb xyuas ceev ntawm cov hlau nplaum lub zog ntawm kev tshuaj xyuas tuaj.
Tshawb xyuas cov txheej txheem tsis xws luag (npaum npuas lossis khawb cuam tshuam rau thaj chaw sib nqus hauv zos).
Txheeb xyuas qhov sib nqus sib nqus sib nqus ntawm ib pawg.
Helmholtz Coils thiab Fluxmeters rau Tag Nrho Lub Sijhawm Sib Nqus
Tag nrho lub sij hawm sib nqus (m, hauv A·m² lossis μT·m³) yog qhov tseem ceeb ntawm kev sib nqus ntawm cov hlau nplaum. Nws txiav txim siab lub torque lub cev muaj zog los yog lub zog ntawm tus actuator exerts. Tsis zoo li qhov chaw Gauss, tag nrho lub sijhawm sib nqus yog ywj siab ntawm txoj haujlwm sojntsuam thiab tsis txawv nrog qhov chaw ntsuas.
Fluxmeter ntsuas lub hauv paus ntsiab lus: Muab cov hlau nplaum rau hauv lossis tawm tsam Helmholtz coil (ib khub ntawm cov coils zoo tib yam txheej txheem coaxially nrog kev sib cais sib npaug ntawm lub vojvoog kauj). Cov hlau nplaum lub teb induces ib tug voltage nyob rau hauv lub kauj thaum lub hlau nplaum yog tsiv mus rau hauv / tawm los yog tig. Lub fluxmeter integrates no voltage dhau lub sij hawm, muab tag nrho cov flux linkage, uas yog ncaj qha proportional rau lub sij hawm sib nqus.
Qhov zoo ntawm kev ntsuas fluxmeter:
Kev rov ua tau zoo heev: ± 0.5% variation ntawm kev ntsuas.
Kev ywj pheej ntawm cov hlau nplaum zoo li qub (tsuas yog cov hlau nplaum haum rau hauv lub coil lub cheeb tsam ib puag ncig).
Muab ib tus lej (tag nrho flux) uas cuam tshuam ncaj qha rau lub cev muaj zog torque.
Ua kom muaj kev sib piv ntawm cov khoom siv hlau nplaum nrog kev ntseeg siab.
Disadvantages: Tus nqi ntsuas fixture $5,000-$15,000 rau Helmholtz coil system (piv rau $ 300- $ 1,000 rau Hall sojntsuam). Kev ntsuas yuav siv sij hawm 10-15 vib nas this ib lub hlau nplaum (vs . 2-3 vib nas this rau Gauss). Li no, fluxmeters yog siv rau batch sampling (piv txwv li, 10% ntawm txhua batch) es tsis yog 100% tshuaj xyuas.
Gauss Meter vs Flux Meter: Sib piv
| Khoom | Gauss Meter (Hall Probe) | Flux Meter (Helmholtz Chev) |
|---|---|---|
| Qhov nws ntsuas | Nto flux ceev ntawm ib qho chaw (Gs, T) | Tag nrho lub sij hawm sib nqus (Φ, A·m²) |
| Nyob ntawm qhov kev sojntsuam | Qhov tseem ceeb (center vs. edge) | Tsis muaj (integrated tshaj tag nrho cov hlau nplaum) |
| Dependency ntawm magnet orientation | Qhov tseem ceeb (yuav tsum ua raws li qhov chaw) | Tsawg (cov hlau nplaum yog tig / poob) |
| Repeatability (ib yam hlau nplaum) | ± 3-5% (nrog phau ntawv sojntsuam) / ± 1% (nrog jig) | ±0.5% |
| Kev ntsuas lub sij hawm ib lub hlau nplaum | 2-5 vib nas this | 10-30 vib nas this |
| Khoom siv | $300-$3,000 | $5,000-$20,000 |
| Kev siv zoo tshaj plaws | 100% nkag / tawm sorting, ceev xyuas | Batch tsim nyog, NPI validation, neeg siv ntawv pov thawj |
| Correlates rau lub cev muaj zog torque | Tsis zoo (nto teb ≠ tag nrho flux) | Zoo heev ( ncaj qha proportional) |
Yuav ua li cas peb tau lees paub qhov sib xws hauv Kev txiav txim ntau OEM
Peb cov txheej txheem kev ruaj ntseg zoo rau kev txiav txim ntau (Ntau dua lossis sib npaug rau 500 pcs):
Raw khoom tau txais: Qauv 5% ntawm cov khoom sintered tuaj, ntsuas Br thiab Hcj ntawm ib daim duab (hysteresisgraph). Tsis lees txais batch yog Br < teev tus nqi lossis Hcj < min.
Machining: Tom qab sib tsoo mus rau qhov kawg qhov ntev, 100% kev tshuaj xyuas qhov ntev nrog CMM (coordinate measuring machine) lossis laser micrometer. Tshem tawm qhov chaw sab nraud ± 0.05mm kam rau ua.
Txheej: Eddy tam sim no kuaj rau txheej tsis xws luag ntawm 100% ntawm qhov chaw. Ni-Cu-Ni thickness ntsuas los ntawm XRF ntawm 10% ntawm qhov chaw.
Magnetization: Sib nqus tag nrho cov hlau nplaum hauv lub tshuab nqus hlau nplaum. Tom qab magnetization, 100% deg Gauss xyuas siv lub tshuab hluav taws xob theem (2 ntsuas cov ntsiab lus ntawm ib qho hlau nplaum). Txais yog nyob rau hauv ± 5% ntawm tus nqi teev.
Flux pov thawj: Los ntawm txhua pawg, xaiv 10 tus qauv (lossis 5% rau cov khoom loj) thiab ntsuas tag nrho cov flux ntawm Helmholtz coil fluxmeter. Xam qhov nruab nrab thiab tus qauv sib txawv. Txais yog tias qhov nruab nrab flux nyob hauv ± 2% ntawm tus nqi nominal thiab CPK Ntau dua lossis sib npaug rau 1.33 (tus txheej txheem muaj peev xwm Performance index).
Shipping: suav nrog QC daim ntawv pov thawj qhia qhov nruab nrab batch Gauss, flux, thiab ntsuas qhov ntev.
Yog tias tus qauv tsis ua pov thawj flux (± 2%), tag nrho batch yog tuav rau 100% flux ntsuas. Cov chav ua tsis tau tiav yog cais thiab remagnetized los yog scrapped.
Laboratory qhia Gauss meter nrog Hall sojntsuam ntsuas qhov chaw ntawm cov hlau nplaum neodymium thiab Helmholtz coil fluxmeter ntsuas tag nrho lub sijhawm sib nqus rau kev txheeb xyuas qhov sib xws.)
Rau cov ncauj lus kom ntxaws txog cov txheej txheem zoo rau koj qhov kev txiav txim loj loj - suav nrog cov txheej txheem ntsuas, cov txheej txheem dhau / tsis ua tiav, thiab cov qauv loj - thov mus saib peb nplooj ntawv Kev Nyab Xeeb Zoo ntawm peb lub vev xaib.
Txhawm rau thov QC pob nrog cov ntaub ntawv pov thawj flux thiab CPK, thov qhia koj qhov yuav tsum tau ua hauv daim ntawv xaj khoom. Peb muab cov ntaub ntawv soj ntsuam tag nrho rau txhua qhov ntau.
Cov lus nug nquag
Q: Kuv puas tuaj yeem ntsuas lub sijhawm sib nqus ntawm cov hlau nplaum uas twb tau sib sau ua ke hauv lub cev muaj zog?
A: Tsis yog, lub cev muaj zog rov qab hlau thiab rotor hloov txoj kev flux. Koj yuav tsum ntsuas cov hlau nplaum ua ntej sib dhos. Rau cov rotors sib sau ua ke, peb tuaj yeem ntsuas torque tas li (Kt) kom pom lub zog hlau nplaum tsis ncaj, tab sis qhov no yuav tsum muaj lub rooj zaum ntsuas lub cev muaj zog.
Q: Dab tsi yog qhov txawv ntawm lub fluxmeter thiab permagraph (hysteresisgraph)?
A: Lub fluxmeter ntsuas tag nrho lub sijhawm sib nqus (ib tus lej). Ib daim permagraph ntsuas tag nrho cov demagnetization nkhaus (Br, Hcj, BHmax) los ntawm kev siv qhov sib txawv sab nraud thiab ntsuas cov hlau nplaum cov lus teb. Permagraphs yog siv rau cov khoom pov thawj, tsis yog QC ntau lawm.
Q: Koj puas muab calibrated Gauss meters rau cov neeg siv khoom los xyuas cov hlau nplaum ntawm lawv qhov chaw?
A: Yog. Peb muag NIST-traceable Gauss meters nrog sojntsuam thiab calibration daim ntawv pov thawj. Nqe: $850-$1,500 nyob ntawm qhov ntau (0-20,000 Gs, 0-30,000 Gs). Calibration pom zoo txhua xyoo los ntawm ib lub chaw kuaj pom zoo.
