2507 igwe anaghị agba nchara eriri igwe tube kemịkalụ kemịkalụ, ihe ọmụmụ ihe ngosi thermal network nke ihe ntụgharị ụwa dị ụkọ Magnetostrictive transducer

Daalụ maka ileta Nature.com.Ị na-eji ụdị ihe nchọgharị nwere oke nkwado CSS.Maka ahụmịhe kachasị mma, anyị na-akwado ka ị jiri ihe nchọgharị emelitere (ma ọ bụ gbanyụọ ọnọdụ ndakọrịta na Internet Explorer).Na mgbakwunye, iji hụ na nkwado na-aga n'ihu, anyị na-egosi saịtị na-enweghị ụdị na Javascript.
Ihe mmịfe na-egosi akụkọ atọ kwa slide.Jiri bọtịnụ azụ na nke na-esote ịkwaga na slides, ma ọ bụ bọtịnụ njikwa slide na njedebe ka ịgafe na slide ọ bụla.

• Nkọwa ngwaahịa
• 2507 igwe anaghị agba nchara tubing sitere na china

Ihe dị mkpa maka imewe nke nnukwu magnetostrictive transducer (GMT) bụ nyocha ngwa ngwa na nke ziri ezi nke nkesa okpomọkụ.Nlebanya netwọkụ thermal nwere uru nke ọnụ ala mgbako dị ala yana izi ezi dị elu yana enwere ike iji ya mee nyocha ọkụ GMT.Otú ọ dị, ụdị okpomọkụ dị ugbu a nwere oke n'ịkọwa usoro nchịkwa okpomọkụ ndị a dị mgbagwoju anya na GMT: ọtụtụ ọmụmụ na-elekwasị anya na steeti ndị na-eguzosi ike na-enweghị ike ijide mgbanwe okpomọkụ;A na-echekarị na nkesa okpomọkụ nke nnukwu magnetostrictive mkpanaka (GMM) bụ otu, mana gradient okpomọkụ n'ofe mkpanaka GMM dị ezigbo mkpa n'ihi na-adịghị mma thermal conductivity, nkesa na-abụghị uwe nke GMM na-adịkarịghị ewebata n'ime thermal. ihe nlereanya.Ya mere, site n'ịtụle n'ụzọ zuru ezu akụkụ atọ ndị a dị n'elu, akwụkwọ a na-ewepụta ụdị GMT Transitional Equivalent Heat Network (TETN).Nke mbụ, dabere na nhazi na ụkpụrụ nke ọrụ nke HMT vibratory longitudinal, a na-eme nyocha nke okpomọkụ.Na ndabere nke a, a na-emepụta ihe nlereanya nke ọkụ ọkụ maka usoro nnyefe ọkụ HMT ma na-agbakọ usoro ihe atụ kwekọrọ.N'ikpeazụ, a na-enyocha izi ezi nke ụdị TETN maka nyocha spatiotemporal okpomọkụ transducer site na ịme anwansị na nnwale.
Nnukwu ihe magnetostrictive (GMM), ya bụ terfenol-D, nwere uru nke nnukwu magnetostriction na ike dị elu.Enwere ike iji ihe ndị a pụrụ iche mepụta ndị transducers nnukwu magnetostrictive (GMTs) nke a pụrụ iji mee ihe n'ọtụtụ ngwa dị ka transducers acoustic transducers, micromotors, linear actuators, wdg 1,2.
Nke kachasị mkpa bụ ikike nke ikpo ọkụ nke GMT dị n'okpuru osimiri, nke, mgbe ejiri ya rụọ ọrụ na ike zuru oke na ogologo oge nke mkpali, nwere ike ịmepụta oke okpomọkụ n'ihi oke ike ha3,4.Tụkwasị na nke ahụ, n'ihi nnukwu ọnụọgụ nke mgbasawanye ọkụ nke GMT na oke mmetụta ya na okpomọkụ dị n'èzí, mmepụta ya nwere njikọ chiri anya na okpomọkụ5,6,7,8.N'akwụkwọ teknụzụ, enwere ike kewaa ụzọ nyocha ọkụ GMT ụzọ abụọ sara mbara9: usoro ọnụọgụ na ụzọ oke.Usoro mmewere oke (FEM) bụ otu n'ime ụzọ nyocha ọnụọgụgụ a na-ejikarị.Xie et al.[10] na-eji usoro mmewere nwere oke iji mee ka nkesa isi mmalite okpomọkụ nke nnukwu draịva magnetostrictive wee ghọta nhazi nke njikwa okpomọkụ na usoro jụrụ oyi nke ụgbọala ahụ.Zhao et al.[11] guzobe simulation mmechi mmechi nkwonkwo nke ogige mmiri na-agbagharị agbagharị na ebe okpomọkụ, wee wuo ngwaọrụ njikwa ọgụgụ isi nke GMM dabere na nsonaazụ simulation mmecha.Otú ọ dị, FEM na-achọsi ike n'ihe gbasara nhazi nlereanya na oge ngụkọ.N'ihi nke a, FEM na-ewere dị ka nkwado dị mkpa maka ngụkọ na-anọghị n'ịntanetị, na-emekarị n'oge nhazi nhazi.
The lumped parameter method, nke a na-akpọkarị ụdị netwọk okpomọkụ, bụ nke a na-ejikarị eme ihe na nyocha thermodynamic n'ihi ụdị mgbakọ na mwepụ ya dị mfe na ọsọ ọsọ dị elu12,13,14.Ụzọ a na-arụ ọrụ dị mkpa n'iwepụ njedebe okpomọkụ nke engines 15, 16, 17. Mellor18 bụ onye mbụ jiri ihe na-eme ka ọ dịkwuo mma na-eme ka sekit T na-eme ka ọ bụrụ ihe nlereanya nke usoro nnyefe ọkụ ọkụ engine.Verez et al.19 mepụtara ụdị akụkụ atọ nke netwọọkụ ikuku nke igwe na-arụkọ ọrụ magnet na-adịgide adịgide na mgbaba axial.Boglietti et al.20 tụrụ aro ụdị netwọkụ thermal anọ nke mgbagwoju anya dị iche iche iji buru amụma ogologo oge thermal transients na windings stator.N'ikpeazụ, Wang et al.21 guzobere sekit nke na-ekpo ọkụ na-ekpo ọkụ maka akụkụ PMSM ọ bụla ma chịkọta ọnụ ọgụgụ na-eguzogide okpomọkụ.N'okpuru ọnọdụ aha, enwere ike ịchịkwa njehie ahụ n'ime 5%.
N'afọ ndị 1990, usoro netwọk okpomọkụ malitere itinye n'ọrụ na ndị na-eme mgbanwe dị ala dị elu.Dubus et al.22 mepụtara ihe nlereanya netwọk okpomọkụ iji kọwaa nnyefe okpomọkụ na-adịgide adịgide na vibrator longitudinal nwere akụkụ abụọ na klas IV gbagọọ ihe mmetụta.Anjanappa et al.23 mere 2D na-enyocha thermal nyocha nke magnetostrictive microdrive site na iji ụdị netwọk ikuku.Iji mụọ mmekọrịta dị n'etiti eriri ọkụ nke Terfenol-D na GMT, Zhu et al.24 guzobe ụkpụrụ steeti dabara adaba maka nguzogide okpomọkụ yana mgbako mbugharị GMT.
Ntụle okpomọkụ GMT dị mgbagwoju anya karịa ngwa injin.N'ihi mma thermal na magnetik conductivity nke ihe eji eme ihe, ọtụtụ engine akụrụngwa a na-atụle n'otu okpomọkụ na-emekarị belata ka otu node13,19.Otú ọ dị, n'ihi adịghị mma thermal conductivity nke HMMs, echiche nke otu ụdị okpomọkụ nkesa adịkwaghị ezi.Na mgbakwunye, HMM nwere ike ndọta dị ala nke ukwuu, ya mere ọkụ ọkụ na-akpata site na mfu magnetik na-abụkarị nke na-adịghị agbanwe agbanwe n'akụkụ mkpanaka HMM.Tụkwasị na nke ahụ, ọtụtụ n'ime nchọpụta ahụ lekwasịrị anya na simulations kwụ ọtọ nke na-enweghị akaụntụ maka mgbanwe okpomọkụ n'oge ọrụ GMT.
Iji dozie nsogbu teknuzu atọ a dị n'elu, isiokwu a na-eji ụda ogologo oge GMT dị ka ihe a na-amụ ma gosipụta nke ọma akụkụ dị iche iche nke transducer, karịsịa mkpanaka GMM.Emepụtala ihe nlere nke netwọkụ okpomoku na-ekpo ọkụ (TETN) GMT zuru oke.Ewubere ihe nlere oke mmewere na ikpo okwu nnwale iji nwalee izi ezi na arụmọrụ nke ụdị TETN maka nyocha ọnọdụ okpomọkụ transducer.
E gosipụtara atụmatụ na akụkụ geometric nke HMF na-agbagharị ogologo oge na Fig. 1a na b, n'otu n'otu.
Ihe ndị dị mkpa gụnyere mkpanaka GMM, eriri ubi, magnet na-adịgide adịgide (PM), yokes, pads, bushes, na isi iyi belleville.Igwe ihe na-akpali akpali na PMT na-enye mkpanaka HMM ebe ndọta ọzọ na oghere ndọta DC, n'otu n'otu.A na-eme yok na ahụ, nke nwere okpu na aka uwe, nke DT4 dị nro, nke nwere nnukwu ike ndọta.Jiri mkpanaka GIM na PM mepụta sekit magnetik mechiri emechi.A na-eme ihe nrụpụta na efere nrụgide nke igwe anaghị agba nchara 304.Site na isi iyi belleville, enwere ike itinye prestress kwụsiri ike na azuokokoosisi.Mgbe ihe na-agbanwe agbanwe na-agafe na eriri mbanye, mkpanaka HMM ga-ama jijiji ya mere.
Na fig.2 na-egosi usoro mgbanwe okpomọkụ n'ime GMT.Ogwe GMM na eriri ubi bụ isi ihe abụọ na-enye ọkụ maka GMT.Agwọ na-ebufe okpomọkụ ya na ahụ site na ikuku convection n'ime na na mkpuchi site na nduzi.Mkpisi HMM ga-emepụta ihe ndọta ndọta n'okpuru ọrụ nke oghere ndọta ọzọ, a ga-ebufe ọkụ na shei ahụ n'ihi convection site na ikuku dị n'ime, yana magnet na yok na-adịgide adịgide n'ihi nduzi.A na-ewepụ okpomọkụ na-ebufe na ikpe ahụ n'èzí site na convection na radieshon.Mgbe okpomọkụ a na-emepụta dị ka ọkụ na-ebufe, okpomọkụ nke akụkụ ọ bụla nke GMT na-erute ọnọdụ kwụ ọtọ.
Usoro nke nnyefe okpomọkụ na GMO na-agbagharị ogologo oge: a - eserese okpomọkụ, b - ụzọ mbufe okpomọkụ.
Na mgbakwunye na okpomọkụ nke igwe exciter na mkpanaka HMM na-emepụta, akụkụ niile nke sekit magnetik mechiri emechi na-enweta mfu ndọta.Ya mere, magnetik na-adịgide adịgide, yoke, okpu na aka aka na-ejikọta ọnụ iji belata nkwụsị magnetik nke GMT.
Nzọụkwụ bụ isi n'iwulite ụdị TETN maka nyocha ọkụ GMT bụ ndị a: akụkụ nke mbụ nwere otu okpomọkụ ọnụ ma na-anọchi anya akụkụ nke ọ bụla dị ka oghere dị iche na netwọk, wee jikọta ọnụ ndị a na okwu nnyefe okpomọkụ kwesịrị ekwesị.okpomọkụ conduction na convection n'etiti ọnụ.N'okwu a, a na-ejikọta isi iyi ọkụ na mmepụta okpomọkụ kwekọrọ na akụkụ nke ọ bụla n'otu n'otu n'etiti oghere na voltaji efu efu nke ụwa iji wuo ihe atụ nke netwọk okpomọkụ.Nzọụkwụ ọzọ bụ ịgbakọ parampat nke netwọk thermal maka akụkụ ọ bụla nke ihe nlereanya ahụ, gụnyere nguzogide okpomọkụ, ike ọkụ na mfu ọkụ.N'ikpeazụ, a na-emejuputa ihe nlereanya TETN na SPICE maka ịme anwansị.Ma ị nwere ike nweta nkesa okpomọkụ nke akụkụ ọ bụla nke GMT na mgbanwe ya na ngalaba oge.
Maka ịdị mma nke nhazi na ngụkọta oge, ọ dị mkpa iji mee ka ihe ngosi okpomọkụ dị mfe ma na-eleghara ọnọdụ ókèala nke na-enwe mmetụta dị nta na nsonaazụ18,26.Ụdị TETN a tụrụ aro n'isiokwu a gbadoro ụkwụ n'echiche ndị a:
Na GMT nwere ikuku ọnya na-enweghị usoro, ọ gaghị ekwe omume ma ọ bụ dị mkpa ime ka ọnọdụ onye nduzi ọ bụla.E mepụtala usoro ihe nlegharị anya dị iche iche n'oge gara aga iji ṅomie nnyefe okpomọkụ na nkesa okpomọkụ n'ime ikuku: (1) nhazi okpomọkụ, (2) nha nha dabere na geometry conductor, (3) T-equivalent thermal circuit29.
Composite thermal conductivity na kpọmkwem equations nwere ike na-atụle ihe ngwọta ziri ezi karịa Ẹkot sekit T, ma ha dabere na ọtụtụ ihe, dị ka ihe onwunwe, conductor geometry na olu nke fọdụrụ ikuku na winding, nke siri ike ikpebi29.N'ụzọ megidere nke ahụ, T-equivalent thermal atụmatụ, ọ bụ ezie na ihe nlereanya dị nso, dị mfe30.Enwere ike itinye ya na eriri mkpagharị ahụ nwere ịma jijiji ogologo oge nke GMT.
Nzukọ cylindrical oghere zuru oke nke ejiri na-anọchi anya eriri exciter na eserese T-equivalent thermal, nke enwetara site na ngwọta nke nha okpomọkụ, na-egosi na fig.3. A na-eche na ọkụ ọkụ na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ na-adabere na radial na axial direction.A na-eleghara mgbagharị okpomọkụ gburugburu anya.Na sekit T nke ọ bụla dakọtara, ọnụ ụzọ abụọ na-anọchi anya ihu igwe kwekọrọ na mmewere, na ọdụ T6 nke atọ na-anọchi anya nkezi okpomọkụ nke mmewere.A na-abanye n'iyi nke akụkụ P6 dị ka isi ihe na nkezi ọnụ ọnụ okpomọkụ gbakọrọ na "ngụkọta okpomọkụ nke ubi ọkụ ọkụ".N'ihe banyere ịme anwansị na-adịghị eguzobe, a na-enye ikike okpomọkụ C6 site na nha anya.(1) na-atụkwasịkwara na nkezi okpomọkụ ọnụ.
Ebe cec, ρec na Vec na-anọchi anya okpomoku, njupụta na olu nke igwe mkpali, n'otu n'otu.
Na tebụl.1 na-egosi nguzogide okpomọkụ nke T-equivalent thermal circuit nke excitation coil na ogologo lec, thermal conductivity λec, mpụta radius rec1 na n'ime radius rec2.
Igwe ọkụ na-ekpo ọkụ na sekit okpomọkụ ha T-dakọtara: (a) na-abụkarị ihe cylindrical nwere oghere, (b) sekit axial na radial T-dakọtara.
Ihe otu sekit T egosikwara na ọ bụ ihe ziri ezi maka isi mmalite okpomọkụ cylindrical ndị ọzọ13.N'ịbụ onye bụ isi ihe na-ekpo ọkụ nke GMO, mkpanaka HMM nwere nkesa okpomọkụ na-enweghị isi n'ihi obere okpomọkụ ya, karịsịa n'akụkụ axis nke mkpanaka.N'ụzọ megidere nke ahụ, enwere ike ileghara inhomogeneity radial anya, ebe ọ bụ na ọkụ ọkụ ọkụ ọkụ nke mkpara HMM dị ntakịrị karịa ọkụ ọkụ ọkụ radial31.
Iji gosipụta n'ụzọ ziri ezi ọkwa nke discretization axial nke mkpanaka wee nweta okpomọkụ kachasị elu, mkpanaka GMM na-anọchi anya n nodes n'otu n'otu na-ekewa n'ime axial direction, na ọnụ ọgụgụ nke ọnụ n nke mkpara GMM ga-abụ ihe na-adịghị mma.Ọnụ ọgụgụ nke contour axial thermal contours bụ n T ọnụ ọgụgụ 4.
Iji chọpụta ọnụọgụ ọnụ n ejiri mee ihe ngosi mmanya GMM, a na-egosi nsonaazụ FEM na fig.5 dị ka ntụaka.Dị ka e gosiri na fig.4, ọnụ ọgụgụ nke ọnụ n na-achịkwa na atụmatụ okpomọkụ nke mkpanaka HMM.Enwere ike ịmegharị ọnụ ọnụ ọ bụla dị ka sekit kwekọrọ na T.N'ịtụle nsonaazụ nke FEM, site na Fig. 5 na-egosi na otu ma ọ bụ atọ ọnụ ụzọ enweghị ike igosi n'ụzọ ziri ezi nkesa okpomọkụ nke mkpanaka HIM (ihe dị ka 50 mm ogologo) na GMO.Mgbe n na-abawanye na 5, nsonaazụ simulation na-akawanye mma ma na-abịaru nso FEM.Ịbawanye n n'ihu na-enyekwa nsonaazụ ka mma na ọnụ ahịa ogologo oge ịgbakọ.Ya mere, n'isiokwu a, a na-ahọrọ ọnụ ụzọ 5 maka ịmegharị mmanya GMM.
Dabere na nyocha ntụnyere a na-eme, a na-egosi kpọmkwem atụmatụ thermal nke mkpanaka HMM na Fig. 6. T1 ~ T5 bụ nkezi okpomọkụ nke akụkụ ise (ngalaba 1 ~ 5) nke osisi.P1-P5 n'otu n'otu na-anọchite anya ike ọkụ ọkụ nke mpaghara dị iche iche nke mkpanaka, nke a ga-atụle n'ụzọ zuru ezu n'isiakwụkwọ na-esonụ.C1 ~ C5 bụ ikike okpomọkụ nke mpaghara dị iche iche, nke nwere ike gbakọọ site na usoro a
ebe crod, ρrod na Vrod na-egosi ikike okpomọkụ kpọmkwem, njupụta na olu nke mkpanaka HMM.
N'iji otu usoro ahụ dịka maka eriri exciter, enwere ike ịgbakọ nguzogide okpomọkụ nke mkpanaka HMM na Fig 6 dị ka.
ebe lrod, rrod na λrod na-anọchi anya ogologo, radius na thermal conductivity nke mkpanaka GMM, n'otu n'otu.
Maka ịma jijiji ogologo oge GMT a mụrụ n'isiokwu a, enwere ike iji otu nhazi ọnụ mee ihe ndị fọdụrụ na ikuku dị n'ime.
Enwere ike ịtụle mpaghara ndị a dị ka ihe mejupụtara otu cylinder ma ọ bụ karịa.Akọwapụtara njikọ mgbanwe okpomọkụ nke na-eme naanị ya na akụkụ cylindrical site na iwu njikwa okpomọkụ Fourier dị ka
Ebe λnhs bụ thermal conductivity nke ihe onwunwe, lnhs bụ ogologo axial, rnhs1 na rnhs2 bụ mpụta na n'ime radii nke okpomọkụ na-enyefe ihe, n'otu n'otu.
A na-eji akara (5) gbakọọ nkwụsị ọkụ ọkụ radial maka mpaghara ndị a, nke RR4-RR12 na-anọchi anya ya na Figure 7. N'otu oge ahụ, a na-eji akara (6) gbakọọ nkwụsị ọkụ nke axial, nke na-anọchi anya RA15 ruo RA33 na Figure. 7.
Enwere ike ikpebi ike ikpo ọkụ nke otu oghere thermal circuit maka mpaghara dị n'elu (gụnyere C7-C15 na Fig 7).
ebe ρnhs, cnhs, na Vnhs bụ ogologo, okpomọkụ a kapịrị ọnụ, na olu, n'otu n'otu.
A na-eji otu ihe mgbochi ọkụ na-eme ka ọ bụrụ ihe na-eme ka ọ bụrụ ihe na-eme ka ikuku dị n'etiti ikuku dị n'ime GMT na elu nke ikpe ahụ na gburugburu ebe obibi dị ka ndị a:
ebe A bụ kọntaktị elu na h bụ ọnụọgụ nnyefe okpomọkụ.Tebụl 232 depụtara ụfọdụ ụdị h eji eme ihe na sistemu ọkụ.Dị ka Tebụl si kwuo.2 ọnụọgụ ọkụ na-ebufe ọkụ nke thermal resistances RH8-RH10 na RH14-RH18, na-anọchi anya convection n'etiti HMF na gburugburu ebe obibi na fig.A na-ewere 7 dị ka uru mgbe niile nke 25 W / (m2 K).A na-edobe ọnụọgụ nnyefe ọkụ ndị fọdụrụ ka 10 W/(m2 K).
Dị ka usoro mbufe okpomọkụ dị n'ime nke egosiri na eserese 2, a na-egosi ụdị ihe ngbanwe TETN zuru oke na eserese 7.
Dị ka e gosiri na fig.7, A na-ekewa ịma jijiji ogologo ogologo GMT ka ọ bụrụ oghere iri na isii, nke ntụpọ uhie na-anọchi anya ya.Ọnụ ọkụ nke egosiri na ihe nlereanya kwekọrọ na nkezi okpomọkụ nke ihe ndị ahụ.Ambient okpomọkụ T0, GMM mkpara okpomọkụ T1 ~ T5, exciter eriri igwe okpomọkụ T6, na-adịgide adịgide magnet okpomọkụ T7 na T8, yoke okpomọkụ T9 ~ T10, ikpe okpomọkụ T11 ~ T12 na T14, ime ụlọ ikuku okpomọkụ T13 na mmepụta mkpara okpomọkụ T15.Tụkwasị na nke ahụ, a na-ejikọta ọnụ ọ bụla na ikike okpomọkụ nke ala site na C1 ~ C15, nke na-anọchite anya ikike okpomọkụ nke mpaghara ọ bụla, n'otu n'otu.P1 ~ P6 bụ mkpokọta okpomọkụ mmepụta nke mkpanaka GMM na exciter coil n'otu n'otu.Tụkwasị na nke ahụ, a na-eji ihe mgbochi ọkụ 54 na-anọchi anya ihe na-eduzi na convective na-eguzogide okpomọkụ n'etiti ọnụ ndị dị n'akụkụ, nke a gbakọrọ na ngalaba ndị gara aga.Tebụl 3 na-egosi njirimara okpomọkụ dị iche iche nke ihe ntụgharị.
Ntụle ziri ezi nke mpịakọta ọnwụ na nkesa ha dị oke mkpa maka ịme ihe ngosi okpomọkụ a pụrụ ịdabere na ya.Enwere ike kewaa okpomoku ọkụ nke GMT na-eme ka ọ bụrụ ihe ndọta nke mkpanaka GMM, ọnwụ Joule nke eriri igwe exciter, mfu igwe, na mfu ndị ọzọ.Mfu ndị ọzọ na mfu igwe a na-eburu n'uche dị ntakịrị ma enwere ike ileghara ya anya.
Nguzogide eriri igwe ac excitation gụnyere: nguzogide dc Rdc na nguzogide anụ ahụ Rs.
ebe f na N bụ ugboro na ọnụ ọgụgụ nke ntụgharị nke mkpali ugbu a.lCu na rCu bụ radius dị n'ime na n'èzí nke eriri igwe, ogologo eriri igwe, na radius nke waya ndọta ọla kọpa dịka nọmba AWG (American Wire Gauge) kọwara ya.ρCu bụ resistivity nke isi ya.µCu bụ ikike ndọta nke isi ya.
Ebe ndọta n'ezie n'ime eriri igwe (solenoid) abụghị otu n'ogologo mkpanaka ahụ.Ọdịiche a bụ nke a na-ahụta nke ọma n'ihi ike ndọta dị ala nke mkpanaka HMM na PM.Ma ọ bụ ogologo symmetrically.Nkesa nke oghere magnetik na-ekpebi nkesa ihe efu magnetik nke mkpanaka HMM.Ya mere, iji gosipụta ezi nkesa nke mfu, a na-ewere mkpanaka akụkụ atọ, nke gosipụtara na foto 8, maka nha.
Enwere ike nweta ọnwụ magnetik site na ịlele loop hysteresis dị ike.Dabere na ikpo okwu nnwale egosiri na eserese 11, a tụrụ loops hysteresis ike atọ.N'okpuru ọnọdụ na ọnọdụ okpomọkụ nke mkpanaka GMM kwụsiri ike n'okpuru 50 ° C, ọkụ ọkụ AC nke mmemme (Chroma 61512) na-ebugharị eriri ubi n'otu ebe, dị ka egosiri na foto 8, ugboro nke oghere magnetik mepụtara site na nwale ugbu a yana njupụta ndọta magnetik na-esi na ya pụta na-agbakọ site na ijikọ voltaji etinyere na eriri induction ejikọrọ na mkpanaka GIM.Ebutere data raw sitere na ebe nchekwa nchekwa (MR8875-30 kwa ụbọchị) wee hazie ya na ngwanrọ MATLAB iji nweta loops hysteresis tụrụ atụ nke egosiri na Fig. 9.
Atụnyere loops hysteresis ike ike: (a) ngalaba 1/5: Bm = 0.044735 T, (b) ngalaba 1/5: fm = 1000 Hz, (c) ngalaba 2/4: Bm = 0.05955 T, (d) ngalaba 2/ 4: fm = 1000 Hz, (e) ngalaba 3: Bm = 0.07228 T, (f) ngalaba 3: fm = 1000 Hz.
Dị ka akwụkwọ 37 si kwuo, enwere ike gbakọọ mkpokọta magnetik Pv kwa otu olu nke mkpanaka HMM site na iji usoro a:
ebe ABH bụ mpaghara nha na mgbanaka BH n'ogo ndọta ugboro fm hà nhata mkpali dị ugbu a f.
Dabere na usoro nkewa nke ọnwụ Bertotti38, mfu magnetik kwa nkeji uka Pm nke mkpanaka GMM nwere ike igosipụta dị ka nchikota nke hysteresis ọnwụ Ph, mfu nke ugbu a Pe na ọnwụ na-adịghị ahụkebe Pa (13):
Site n'echiche injinia38, mfu na-adịghị mma na mfu efu ugbu a nwere ike ijikọta n'otu okwu a na-akpọ mkpokọta eddy ugbua.Ya mere, usoro maka ịgbakọ ọnwụ nwere ike dị mfe dị ka ndị a:
na nha nha.(13) ~ (14) ebe Bm bụ njupụta nke njupụta magnetik nke oghere ndọta na-akpali akpali.kh na kc bụ ihe na-akpata ọnwụ hysteresis na ngụkọta eddy dị ugbu a na-efu efu.