Mokhoa oa ho Thibela Demagnetization ea Limanete tse bōpehileng ka U Libakeng tse Mocheso o Phahameng

Limanete tsa neodymium tse bōpehileng joaloka Ufana ka matla a khoheli a ke keng a lekanngoa - ho fihlela mocheso o otla. Lits'ebetsong tse joalo ka lienjineri, lisensara, kapa mechini ea indasteri e sebetsang ka holimo ho 80°C, demagnetization e ke keng ea fetoloa e ka sitisa ts'ebetso. Ha U-magnet e lahleheloa ke 10% feela ea phallo ea eona, sebaka se tsepamisitsoeng ka har'a lekhalo la eona lea putlama, e leng se bakang ho hloleha ha sistimi. Mona ke mokhoa oa ho sireletsa meralo ea hau:

Ke Hobane'ng ha Mocheso o U Bolaea Magnets ka potlako

Limanete tsa Neodymium li tima matla ha matla a mocheso a senya ho tsamaisana ha tsona athomo. Libopeho tsa U li tobane le likotsi tse ikhethang:

• Geometric Stress: Ho kobeha ho baka tsitsipano ea kahare e kotsing ea ho atolosoa ke mocheso.
• Flux Concentration: Boima ba sebaka se phahameng ka har'a lekhalo bo potlakisa tahlehelo ea matla ka nako e phahameng.
• Asymmetric Failure: Leoto le le leng le theoha ka pel'a le leng le sa leka-lekanya potoloho ea makenete.

Leano la Tšireletso ea Lintlha tse 5

1. Khetho ea Lintho: Qala ka Kereiti e nepahetseng

Ha se NdFeB kaofela e lekanang. Beha pele limaraka tsa khatello e phahameng (H letoto):

2. Thermal Shielding: Senya Tsela ea Mocheso

Thuto-pale: Moetsi oa enjene ea servo o fokotsitse ho hloleha ha U-magnet ka 92% kamora ho eketsa li-spacers tsa 0.5mm mica lipakeng tsa likhoele le limakete.

3. Moralo oa Potoloho ea Magnetic: Outsmart Thermodynamics

• Bahlokomeli ba Flux: Lipoleiti tsa tšepe ho pholletsa le U-gap li boloka tsela e phallang nakong ea ho sisinyeha ha mocheso.
• Magnetization e sa Lekaneng: Matha limakete ka 70-80% ea matla a felletseng ho tloha "kamoreng ea hlooho" bakeng sa ho hoholeha ha mocheso.
• Meralo e Koetsoeng ea Loop: Kenya li-U-magnets ka har'a matlo a tšepe ho fokotsa ho pepeseha ha moea le ho tsitsisa phallo.

"Mohlokomeli ea entsoeng hantle o fokotsa kotsi ea demagnetization ka 40% ho 150 ° C vs. U-magnets a se nang letho."
- IEEE Transactions ho Magnetics

4. Tšireletso ea Ts'ebetso

• Derating Curves: Le ka mohla u se ke ua feta meeli ea mocheso o itseng (sheba chate e ka tlase).
• Tlhokomelo ea Thermal: Kenya li-sensor haufi le U-legs bakeng sa litlhokomeliso tsa nako ea nnete.
• Qoba ho Palama Baesekele: Ho futhumatsa ka potlako/ho tsidifala ho baka microcracks → demagnetization e potlakileng.

Derating Curve Mohlala (Mophato wa N40SH):

Br Loss │ 0% │ 8% │ 15% │ 30%*

5. Liaparo tse tsoetseng pele le li-Bonding

• Epoxy Reinforcements: E tlatsa li-microcracks ho tloha katoloso ea mocheso.
• Liaparo tsa Mocheso o Phahameng: Parylene HT (≥400°C) e feta mokhoa o tloaelehileng oa NiCuNi oa ho pata ka holimo ho 200°C.
• Khetho ea Sekhomaretsi: Sebelisa li-epoxies tse tletseng likhalase (mocheso oa tšebeletso> 180°C) ho thibela ho koaloa ha makenete.

Lifolakha tse Khubelu: Na Magnet ea hau ea U e hloleha?

Fumana demagnetization ea pele:

1. Field Asymmetry:> 10% phapano ea phallo lipakeng tsa U-leoto (lekanya ka Hall probe).
2. Temperature Creep: Magnet e ikutloa e chesa ho feta tikoloho - e bontša tahlehelo ea hona joale.
3. Marotholi a Ts'ebetso: Li-motor li lahleheloa ke torque, li-sensor li bonts'a ho hoholeha, likarohano li hloloheloa litšila tse nang le ferrous.

Ha Thibelo e Hlōleha: Maqheka a Poloko

1. Re-magnetization: E ka etsahala haeba thepa e sa senyeha ka sebopeho (e hloka> 3T pulse field).
2. Ho roala hape: Ho roala libotlolo tse kolobisitsoeng, sebelisa hape pente e nang le mocheso o phahameng.
3. Phatlalatso Protocol: Fapanya ka limaraka tsa SH/UH + lintlafatso tsa mocheso.

Foromo ea ho Hlōla

Phaello e Phahameng ea Hci + Thermal Buffering + Smart Circuit Design = Limanete tsa U tse Thibela Mocheso

Limanete tsa neodymium tse nang le sebopeho sa U li atleha maemong a thata ha u:

1. Khetha limaraka tsa SH/UH ka bolumeli bakeng sa>120°C likopo
2. Ho itšehla thajana ho tloha mehloling ea mocheso e nang le litšitiso tsa moea / ceramic
3. Tsitsisa phallo le balebeli kapa matlo
4. Lekola mocheso ka lekhalo