Lub hauv paus ntsiab lus ntawm DC Motors

Lub hauv paus ntsiab lus ntawm kev tswj lub cev tsis muaj zog DC yog raws li hauv qab no: Txhawm rau ua kom lub cev muaj zog tig, chav tswj hwm yuav tsum xub txiav txim siab txoj haujlwm ntawm lub cev muaj zog rotor raws li Hall -sensor. Tom qab ntawd, raws li stator windings, nws txiav txim siab qhov sib lawv liag ntawm lub zog transistors hauv inverter yog qhib (lossis tawm). Lub AH, BH, thiab CH transistors (hu ua sab caj npab fais fab transistors) thiab AL, BL, thiab CL transistors (hu ua sab caj npab fais fab transistors) nyob rau hauv lub inverter sequentially ntws tam sim no los ntawm lub cev muaj zog coils, tsim ib clockwise (los yog counter-clockwise) rotating magnetic teb. Qhov no magnetic teb cuam tshuam nrog lub rotor cov hlau nplaum, yog li ua rau lub cev muaj zog tig clockwise/counter-clockwise. Thaum lub cev muaj zog rotor tig mus rau ib qho chaw uas Hall-sensor hnov ​​lwm cov teeb liab, chav tswj tau tig rau lub zog tom ntej ntawm transistors. Lub voj voog no txuas ntxiv mus, tso cai rau lub cev muaj zog tig mus rau tib qho kev taw qhia kom txog thaum lub chaw tswj hwm txiav txim siab nres lub cev muaj zog rotor, thaum lub sijhawm lub zog transistors raug muab tua (lossis tsuas yog sab caj npab fais fab transistors tau qhib). Txhawm rau thim rov qab rotor kev taw qhia, lub hwj chim transistors raug muab tso rau hauv qhov rov qab ua ntu zus.

Cov qauv hloov pauv yooj yim rau cov hluav taws xob hloov hluav taws xob tuaj yeem piav qhia raws li hauv qab no: AH, BL → AH, CL → BH, CL → BH, AL → CH, AL → CH, BL. Txawm li cas los xij, nws yog txwv tsis pub hloov lawv li AH, AL, BH, BL, lossis CH, CL. Tsis tas li ntawd, vim hais tias cov khoom siv hluav taws xob ib txwm muaj lub sijhawm hloov pauv, lub sijhawm hloov pauv ntawm lub zog transistors yuav tsum siv lub sijhawm teb no rau hauv tus account. Txwv tsis pub, yog tias sab caj npab sab sauv (los yog sab caj npab) tsis tau kaw tag nrho ua ntej sab caj npab (los yog sab caj npab sab sauv) qhib, ib qho luv luv Circuit Court yuav tshwm sim, ua rau lub hwj chim transistor hlawv tawm.

Thaum lub cev muaj zog pib rotating, chav tswj kev sib piv (lossis xam los ntawm software) cov lus txib (suav nrog qhov ceev ntawm tus neeg tsav tsheb thiab lub acceleration / deceleration rate) nrog rau qhov ceev ntawm kev hloov ntawm chav tsev -sensor teeb liab los txiav txim seb pab pawg twg ntawm cov keyboards (AH, BL, AH, CL, BH, CL, los yog ... ) yuav tsum tau qhib ntev npaum li cas. Yog tias qhov ceev tsis txaus, lub sijhawm ntawm - ntev dua; yog tias qhov nrawm dhau, lub sijhawm ntawm - luv dua. Qhov haujlwm no yog ua los ntawm PWM. PWM (Pulse Width Modulation) txiav txim siab qhov ceev ntawm lub cev muaj zog, thiab tsim cov PWM no yog qhov tseem ceeb rau kev ua tiav kev tswj ceev ceev.

Siab - tswj ceev yuav tsum txiav txim siab seb lub kaw lus lub moos daws teeb meem puas txaus los tswj lub sijhawm ua haujlwm ntawm cov lus qhia software. Tsis tas li ntawd, txoj kev Hall- cov cim hloov pauv tau nkag mus kuj cuam tshuam rau kev ua haujlwm ntawm lub tshuab ua haujlwm, qhov raug, thiab kev ua haujlwm tiag - sijhawm. Rau qis- tswj ceev, tshwj xeeb tshaj yog qis- nrawm pib, Hall-sensor teeb liab hloov qeeb dua. Yog li ntawd, txoj kev nrhiav tau lub teeb liab, ua lub sij hawm, thiab tsim nyog configuration ntawm kev tswj tsis raws li cov yam ntxwv ntawm lub cev muaj zog ua ib qho tseem ceeb heev. Xwb, kev tawm tswv yim ceev tuaj yeem hloov kho kom siv cov kev hloov pauv encoder raws li kev siv, nce teeb liab daws teeb meem kom tswj tau zoo dua. Kev ua haujlwm ntawm lub cev muaj zog thiab cov lus teb zoo kuj yog nyob ntawm qhov tsim nyog ntawm PID tswj. Raws li tau hais ua ntej, brushless DC motors siv kaw- voj tswj; Yog li ntawd, cov lus qhia tawm tswv yim qhia rau chav tswj kom deb li deb ntawm lub cev muaj zog los ntawm lub hom phiaj ceev - qhov no yog qhov yuam kev. Paub txog qhov yuam kev yuav tsum tau them nyiaj, uas tuaj yeem ua tiav los ntawm kev tswj hwm engineering xws li PID tswj. Txawm li cas los xij, lub xeev thiab ib puag ncig tswj hwm yog qhov nyuaj thiab hloov tau. Yog tias yuav tsum muaj kev tswj kom ruaj khov thiab ruaj khov, cov yam ntxwv uas yuav tsum tau xav txog yog tej zaum dhau ntawm kev tswj hwm kev tswj hwm ib txwm muaj. Yog li ntawd, kev tswj fuzzy, cov kws tshaj lij thiab cov neural networks tseem yuav muab tso rau hauv cov kev xav tseem ceeb ntawm kev txawj ntse PID tswj.