Yuav txo cov suab nrov li cas los ntawm lub cev muaj zog ua haujlwm

Electromagnetic suab nrov suppression

Lub suab nrov electromagnetic feem ntau tshwm sim los ntawm lub zog hluav taws xob hauv huab cua sib nqus, uas ua rau muaj kev vibration ntawm stator thiab rotor.

1.Optimize electromagnetic tsim: Xaiv qhov tsim nyog stator thiab rotor qhov sib txuam (qhov sib nrug deb), txais yuav rotor inclined zawj lossis ob chav inclined zawj qauv, uas tuaj yeem ua rau cov hniav tsis muaj zog thiab radial electromagnetic force waves. Optimizing cov duab los yog magnetization txoj kev ntawm cov hlau nplaum hlau mus rau sinusoidate cov pa sib nqus magnetic teb kuj yuav txo tau harmonics. cov

2.Txhim kho cov txheej txheem tsim khoom thiab sib dhos: xyuas kom meej qhov sib txawv ntawm lub stator thiab rotor, txo qhov sib txawv ntawm huab cua tsis sib xws, thiab txo qis unilateral sib nqus rub quab yuam. Los ntawm kev siv cov hlau nplaum qhov sib nqus los yog txo qhov dav ntawm lub qhov, lub suab nrov electromagnetic los ntawm kev cog lus tuaj yeem txo.

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Kev ua kom zoo ntawm kev tsav tsheb thiab kev tswj hwm (rau txhuam / txhuam tsis siv lub tshuab): Siv sine yoj tsav (xws li FOC vector tswj) es tsis txhob siv lub voj voos xwmfab tuaj yeem txo qhov torque ripple thiab electromagnetic howling. Ua kom lub zog hloov pauv ntawm cov khoom siv hluav taws xob kom siab dua qhov kev hnov ​​​​ntau ntawm tib neeg pob ntseg (20kHz) tuaj yeem tshem tawm cov suab nrov hloov.

 

 

Mechanical suab tswj

Mechanical suab nrov feem ntau yog los ntawm bearings, rotor tsis txaus, thiab kev sib txhuam ntawm cov khoom.

1.Ua kom rotor dynamic tshuav nyiaj li cas: Ua siab -precision (xws li G1.0 los yog siab dua) dynamic tshuav nyiaj li cas kho ntawm lub rotor kom tshem tawm kev co los ntawm huab hwm coj eccentricity. cov

Kev xaiv thiab kev saib xyuas cov kabmob: Siv cov- suab qis, siab- cov kabmob qib siab (xws li P5 / P4 qib pob bearings). Xyuas kom zoo preloading thaum lub sij hawm sib dhos (xws li siv waveform caij nplooj ntoos hlav ntxhua khaub ncaws) kom tsis txhob muaj suab nrov txawv txav los ntawm kev tshem tawm. Tsis tu ncua ntxuav thiab ntxiv cov roj lubricating uas tsim nyog.

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Ua kom muaj kev sib dhos raug thiab cov qauv nruj: Txhim kho cov khoom ua haujlwm raug, xyuas kom muaj kev txhim kho kom zoo, thiab tiv thaiv cov tub ntxhais stator los ntawm loosening hauv lub casing. Ua kom lub thickness ntawm lub hauv paus los yog stator quab los txhim kho cov txheej txheem rigidity thiab tsis txhob resonance.

Lub suab nrov aerodynamic feem ntau yog tshwm sim los ntawm kev sib hloov ntawm cov kiv cua txias thiab kev cuam tshuam ntawm huab cua.

Txhim kho cov kiv cua thiab cov kav dej kom zoo: Los ntawm kev txo cov kiv cua txoj kab uas hla thiab txais yuav rov qab tilting lossis tsis yog-cov hniav tsim qauv thaum ua tau raws li qhov yuav tsum tau ua ntawm cov cua kub dissipation, cua nrov tuaj yeem txo. Xyuas kom cov inlet du thiab qhov hluav taws xob ducts kom tsis txhob muaj kev kub ntxhov los ntawm kev khoov ntse thiab cov npoo. cov

Txais kev sib cais ntawm kev vibration thiab suab rwb thaiv tsev: siv cov ntaub ntawv hloov tau yooj yim xws li roj hmab ncoo ntawm lub cev muaj zog thiab lub hauv paus rau kev vibration cais thiab thaiv cov qauv suab sib kis. Rau lub suab nrov uas tsim tawm, lub npog tsis muaj suab nrov tuaj yeem ntsia tau. cov

Kev tshuaj xyuas thiab kev saib xyuas txhua hnub: tsis tu ncua ntxuav lub cev muaj zog plua plav, xyuas thiab ceev cov ntsia hlau ntsia hlau, hloov cov bearings hnav, siv thiab lwm yam khoom. Siv cov khoom siv hluav taws xob tswj xyuas kom muaj lub zog zoo thiab tseem pab txo cov suab nrov los ntawm lub zog hloov pauv. cov

 

 

Lub cev muaj zog suab rwb thaiv tsev tswv yim

1, Xaiv cov ntaub ntawv rwb thaiv tsev tsim nyog

Tus yuam sij ua suab rwb thaiv tsev rau lub cev muaj zog yog cov khoom siv. Cov ntaub ntawv suab rwb thaiv tsev muaj xws li ua npuas ncauj, roj hmab thiab suab rwb thaiv tsev paj rwb, uas tuaj yeem nqus tau qhov kev vibration thiab suab nrov thaum lub cev muaj zog khiav. Ua npuas ncauj yog lub teeb thiab yooj yim rau nruab, haum rau me me motors; Roj Hmab yog ruaj khov thiab muaj lub suab rwb thaiv tsev zoo, haum rau kev lag luam ib puag ncig; Soundproofing paj rwb muaj kev ua tau zoo dua thiab tsim nyog rau cov khoom siv hauv tsev.

2, Optimize installation txoj kev

Ntxiv nrog rau cov ntaub ntawv, cov txheej txheem installation kuj tseem ceeb. Ua ntej, xyuas kom meej tias lub hauv paus lub cev muaj zog ruaj khov thiab txo qis kev sib kis. Secondly, soundproof npog tuaj yeem ntsia tau ib ncig ntawm lub cev muaj zog los thaiv cov suab nrov ntxiv. Thaum kawg, xyuas qhov kev sib txuas ntawm lub cev muaj zog thiab cov khoom siv, thiab siv cov khoom sib txuas yooj yim los txo cov suab nrov.

3, Kev tu thiab tu tsis tu ncua

Lub suab nrov ntawm lub cev muaj feem cuam tshuam rau cov khoom siv laus lossis tsis txaus lubrication. Kev tshuaj xyuas tsis tu ncua ntawm lub cev muaj zog bearings thiab lub zog, lub sijhawm ntxiv ntawm cov roj lubricating, tuaj yeem txo cov suab nrov ntawm kev sib txhuam. Nyob rau tib lub sijhawm, ntxuav cov plua plav thiab cov khib nyiab nyob ib puag ncig lub cev muaj zog kom tsis txhob muaj suab nrov los ntawm cov cua kub tsis zoo.

 

 

1, Mechanical vibration yog qhov tseem ceeb

Thaum lub sijhawm ua haujlwm ntawm lub cev muaj zog, cov khoom siv sab hauv yog inevitably raug kev co. Cov kabmob hnav, rotor tsis txaus, lossis kiv cua deformation tuaj yeem ua kom qhov kev vibration no, ua rau muaj suab nrov ntxiv. Kev tshuaj xyuas tsis tu ncua thiab kev saib xyuas ntawm cov khoom no tuaj yeem txo cov suab nrov.

2, Electromagnetic cuam tshuam tsis tuaj yeem tsis quav ntsej

Thaum tam sim no dhau los ntawm lub cev muaj zog winding, electromagnetic teb yuav raug generated. Yog tias tus qauv tsim tsis tsim nyog lossis lub zog tsis ruaj khov, lub zog electromagnetic yuav ua rau cov tub ntxhais hlau vibrate thiab tsim lub suab nrov. Qhov xwm txheej no muaj ntau dua nyob rau hauv cov laus lossis cov motors tsis zoo.

3, Cov teeb meem kev teeb tsa tau yooj yim saib dhau

Kev teeb tsa tsis raug ntawm lub cev muaj zog, lub hauv paus tsis sib xws, lossis cov khoom sib txuas xoob tuaj yeem ua kom muaj kev vibration thiab suab nrov thaum ua haujlwm. Xyuas kom meej tias lub cev muaj zog tau nruab rau ntawm lub hauv paus ruaj khov thiab tiaj tus, thiab xyuas kom tag nrho cov fasteners tau nruj kom txhim kho cov teeb meem suab nrov.

 

01

Lub hauv paus chiv keeb thiab kev loj hlob ntawm cov qauv suab nrov

Lub suab nrov tawm los ntawm lub cev muaj zog tsis tuaj yeem tawm ntawm huab cua nyias, tab sis yog qhov tshwm sim ntawm kev sib cuam tshuam ntawm lub zog excitation, qauv, thiab huab cua.

Lub hauv paus ua rau: electromagnetic quab yuam, mechanical imbalance, airflow cuam tshuam;

Kev sib kis: los ntawm cov kabmob, lub hau kawg, thiab lub hauv paus tshuab;

Teb: Lub stator core, casing, thiab kawg cap raug yuam kom vibrate;

Radiation: Lub vibrating nto compresses cua, tsim suab nrov.

Yog li ntawd, tsuas yog los ntawm tib lub sijhawm hais txog peb qhov txuas ntawm "qhov chaw teb" tuaj yeem cuam tshuam lub suab nrov.

 

02

Peb qhov tseem ceeb ntawm lub suab nrov

2.1 ▲ Electromagnetic yam - nruab nrab mus rau siab zaus "buzzing" suab

Tsis sib xws huab cua sib nqus teb: sinusoidal yoj doped nrog spatial harmonics.

Sib nqus flux saturation: waveform distortion tom qab cov tub ntxhais hlau yog "stretched".

Cov nyhuv ntawm cov hniav: Lub stator hniav qhov txiav txiav lub rotating magnetic teb zoo li "xov laj".

Hwj chim harmonic: Txhaj siab - suab nrov rau hauv PWM tam sim no ntawm lub zaus converter.

2.2 ▲ Mechanical yam - qis- zaus "rumbling" thiab "nias" suab

Dynamic unbalance ntawm rotor: Qhov nruab nrab ntawm qhov loj thiab qhov nruab nrab ntawm kev sib hloov yog eccentric, ua rau muaj kev vibration ntawm 1 npaug ntawm qhov zaus.

Bearing defects: raceway roundness yuam kev, kev cuam tshuam tsis zoo, lubrication tsis zoo.

Kev ua yuam kev: Lub hau kawg tsis yog concentric nrog lub hauv paus tshuab, thiab cov tub ntxhais hlau yog loosely matched nrog lub casing.

Cov qauv resonance: Lub excitation zaus mus txog lub ntuj frequencies ntawm stator, kawg npog, thiab rotor.

2.3 ▲ Aerodynamic Factors - Ntxuam thiab qhov cua qhov hluav taws xob suab nrov

Ntxuam eddy tam sim no: Lub sij hawm "shaus" ntawm cov hniav ua rau lub suab nrov tam sim no.

Tshav kub hauv qhov cua qhov cua: cua ntws los ntawm lub hood, kev hloov pauv tam sim ntawd ntawm tus ntoo khaub lig- ntu ntawm kev tig ntse.

 

03

System Noise Reduction Roadmap

3.1 ▲ Txo lub zog excitation los ntawm qhov chaw

Electromagnetic tov: skewed slots / ncej, optimized ncej qhov sib txuam, sib nqus ncej chamfering, txhaj tshuaj siab - zaus sine tam sim no, ntxiv cov epoxy nplaum los yog siab damping composite khoom ntawm stator core thiab casing.

Tsav lub tswv yim: FOC algorithm ua rau tam sim no waveform ntau ncig thiab txo cov ntsiab lus sib haum xeeb.

Cov qauv yooj yim: Ib qho elastic coupling yog ntxiv ntawm lub cev muaj zog thiab lub load, thiab cov ntaub ntawv damping yog siv los 'siv' lub zog vibration.

3.2 ▲ Thaiv txoj kev sib kis nruab nrab

Modal tsom xam: Tau txais lub ntuj frequencies thiab vibration hom ntawm stator, casing, thiab kawg caps los ntawm FEA los yog kev sim.

Frequency offset: Reinforcement, variable wall thickness, integrated design, raising or lowering the natural zaus ntawm tus qauv kom tsis txhob excitation peaks.

3.3 ▲ Xaus cov yeeb nkab kho - aerodynamic suab nrov

Ntxuam optimization: Xaiv qis- suab nrov airfoil hniav, phim tus naj npawb thiab inclination lub kaum sab xis ntawm cov hniav kom tsim nyog, thiab xyuas kom meej meej meej ntawm cov kiv cua.

Cov pa cua du: Tsis txhob tig ntse thiab hloov pauv tam sim ntawd hauv ntu -, tso cai rau cov cua nkag mus rau hauv laminar ntws.

 

Qhov txuas hauv qab no yog peb lub tshuab tsis muaj suab nrov:

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