NTC (Negative Temperature Coefficient) li-sensor tsa mocheso oa mocheso li bapala karolo ea bohlokoa lits'ebetsong tsa ho tsamaisa matla a likoloi, haholo-holo bakeng sa ho lekola mocheso le ho netefatsa polokeho ea sistimi. Ka tlase ke tlhahlobo e qaqileng ea mesebetsi ea bona le melao-motheo ea ts'ebetso:
I. Mesebetsi ea li-Thermistors tsa NTC
- Tšireletso ea mocheso o feteletseng
- Tlhokomelo ea Mocheso oa Motlakase:Lits'ebetsong tsa Motlakase oa Motlakase (EPS), ts'ebetso ea nako e telele ea motlakase e ka lebisa ho futhumala ka lebaka la boima bo feteletseng kapa maemo a tikoloho. Sensor ea NTC e hlokomela mocheso oa koloi ka nako ea nnete. Haeba mocheso o feta moeli o sireletsehileng, tsamaiso e fokotsa matla a matla kapa e etsa hore ho be le mehato e sireletsang ho thibela tšenyo ea motlakase.
- Tlhokomelo ea Mocheso oa Mokelikeli oa Hydraulic:Lits'ebetsong tsa Electro-Hydraulic Power Steering (EHPS), mocheso o phahameng oa mokelikeli oa hydraulic o fokotsa viscosity, o nyenyefatsa thuso ea tsamaiso. Sensor ea NTC e netefatsa hore mokelikeli o lula ka har'a sebaka sa ts'ebetso, ho thibela ho senyeha ha tiiso kapa ho lutla.
- Ntlafatso ea Ts'ebetso ea Sisteme
- Matšeliso a Mocheso o Tlase:Ka mocheso o tlase, ho eketseha ha viscosity ea hydraulic fluid ho ka fokotsa thuso ea ho tsamaisa. Sensor ea NTC e fana ka lintlha tsa mocheso, e nolofalletsang sistimi hore e fetole litšobotsi tsa thuso (mohlala, ho eketsa motlakase kapa ho lokisa li-valve tsa hydraulic valve) bakeng sa maikutlo a tsitsitseng a ho tsamaisa.
- Taolo e Matla:Lintlha tsa mocheso oa nako ea 'nete li ntlafatsa li-algorithms tsa taolo ho matlafatsa ts'ebetso ea matla le lebelo la karabo.
- Tlhahlobo ea Phoso le Tlhokomelo ea Tšireletseho
- E lemoha liphoso tsa sensor (mohlala, li-circuits tse bulehileng / tse khuts'oane), e tsosa likhoutu tsa liphoso, 'me e kenya tšebetsong mekhoa e sa sireletsehang ho boloka ts'ebetso ea mantlha ea ho tsamaisa.
II. Molao-motheo oa ho sebetsa oa NTC Thermistors
- Mocheso-Ho hanyetsa Kamano
Ho hanyetsa ha thermistor ea NTC ho fokotseha ka sekhahla ka mocheso o ntseng o phahama, ho latela mokhoa ona:
RT=R0⋅eB(T1−T01)
HokaeRT= ho hanyetsa mochesoT,R0 = ho hanyetsa ka lebitso ka mocheso oa mochesoT0 (mohlala, 25°C), leB= lintho tse sa fetoheng.
- Phetoho ea Letšoao le Ts'ebetso
- Potoloho ea Voltage Divider: NTC e kenyelelitsoe ho potoloho ea voltage divider e nang le mohanyetsi o tsitsitseng. Liphetoho tse bakoang ke mocheso li fetola motlakase sebakeng sa divider.
- Phetoho ea AD le Palo: ECU e fetolela lets'oao la motlakase ho mocheso ho sebelisa litafole tsa ho sheba kapa equation ea Steinhart-Hart:
T1 =A+Bln(R)+C(ln(R))3
- Ts'ebetso ea Threshold: ECU e etsa hore ho be le liketso tse sireletsang (mohlala, ho fokotsa matla) ho latela litekanyo tse behiloeng esale pele (mohlala, 120 ° C bakeng sa li-motors, 80 ° C bakeng sa mokelikeli oa hydraulic).
- Ho Ikamahanya le Boemo ba Tikoloho
- Packaging e matla: E sebelisa lisebelisoa tsa mocheso o phahameng, tse thibelang oli, le lisebelisoa tse thibelang ho sisinyeha (mohlala, epoxy resin kapa tšepe e sa jeleng paate) bakeng sa tikoloho e thata ea likoloi.
- Ho Sefa Lerata: Li-circuits tsa boemo ba matšoao li kenyelletsa li-filters ho felisa tšitiso ea motlakase.
III. Lisebelisoa tse Tloaelehileng
- EPS Motor Winding Temperature Monitoring
- E kentsoeng ka har'a li-stator tsa motor ho bona ka kotloloho mocheso o kenang, ho thibela ho hloleha ha insulation.
- Hydraulic Fluid Circuit Temperature Monitoring
- E kentsoe litseleng tsa phallo ea mokelikeli ho tataisa liphetoho tsa li-valve.
- ECU Heat Dissipation Monitoring
- E lekola mocheso oa kahare oa ECU ho thibela ho senyeha ha karolo ea elektroniki.
IV. Mathata a Theknoloji le Litharollo
- Matšeliso a Nonlinearity:Tekanyo e nepahetseng ea boemo bo holimo kapa tatellano ea likaroloana e ntlafatsa ho nepahala ha palo ea mocheso.
- Ntlafatso ea Nako ea Karabo:Li-NTC tsa mofuta o monyane li fokotsa nako ea karabo ea mocheso (mohlala, <10 metsotsoana).
- Ho tsitsa ha nako e telele:Li-NTC tsa boemo ba likoloi (mohlala, tse tiisitsoeng ka AEC-Q200) li netefatsa ho tšepahala ho pholletsa le mocheso o pharaletseng (-40 ° C ho isa ho 150 ° C).
Kakaretso
Li-thermistor tsa NTC tse tsamaisong ea matla a likoloi li thusa ho beha leihlo mocheso ka nako ea 'nete bakeng sa ho sireletsa mocheso o feteletseng, ho ntlafatsa ts'ebetso, le ho hlahloba liphoso. Molao-motheo oa bona oa mantlha o phahamisa liphetoho tse itšetlehileng ka mocheso oa mocheso, o kopantsoe le moralo oa potoloho le li-algorithms tsa taolo, ho netefatsa ts'ebetso e bolokehileng le e sebetsang. Ha ho khanna ka boithaopo ho ntse ho fetoha, lintlha tsa mocheso li tla tsoela pele ho tšehetsa tlhokomelo e boletsoeng esale pele le ho kopanya tsamaiso e tsoetseng pele.
Nako ea poso: Mar-21-2025