Siab txhim khu kev qha 86mm stepper

Vim muaj kev vam meej, kev koom ua ke yog tuav lub khw tswj lub cev muaj zog.Brushless DC motors (BLDC) thiab cov hlau nplaum ruaj khov synchronous motors (PMSM) ntawm ntau qhov ntau thiab tsawg thiab lub zog ceev tau hloov pauv lub cev muaj zog xws li brushed AC / DC thiab AC induction.
Brushless DC lub cev muaj zog / ruaj khov hlau nplaum synchronous lub cev muaj zog muaj tib lub qauv siv tshuab, tshwj tsis yog lub stator winding.Lawv stator windings txais cov qauv geometric sib txawv.Lub stator yeej ib txwm rov qab rau lub cev muaj zog hlau nplaum.Cov motors no muaj peev xwm muab siab torque ntawm tsawg ceev, yog li lawv yog heev haum rau servo lub cev muaj zog daim ntaub ntawv.
Brushless DC motors thiab cov hlau nplaum ruaj khov synchronous motors tsis tas yuav txhuam thiab commutators los tsav lub motors, yog li lawv muaj txiaj ntsig zoo thiab txhim khu kev qha ntau dua li brushed motors.
Brushless DC lub cev muaj zog thiab cov hlau nplaum ruaj khov synchronous lub cev muaj zog siv software tswj algorithm es tsis txhob txhuam thiab cov khoom siv hluav taws xob kom tsav lub cev muaj zog khiav.
Cov qauv siv tshuab ntawm brushless DC lub cev muaj zog thiab cov hlau nplaum ruaj khov synchronous lub cev muaj zog yog qhov yooj yim heev.Muaj ib qho electromagnetic winding ntawm lub tsis-rotating stator ntawm lub cev muaj zog.Ua los ntawm rotor mus tas li hlau nplaum.Lub stator tuaj yeem nyob sab hauv lossis sab nraud, thiab ib txwm rov qab rau cov hlau nplaum.Tab sis lub stator yeej ib txwm yog ib feem, thaum lub rotor yog ib txwm ib tug txav (rotating) ib feem.
Brushless DC lub cev muaj zog tuaj yeem muaj 1, 2, 3, 4 lossis 5 theem.Lawv cov npe thiab kev tsav tsheb algorithms yuav txawv, tab sis lawv yog qhov tseem ceeb tsis muaj txhuam.
Qee qhov brushless DC motors muaj sensors, uas tuaj yeem pab kom tau txais txoj haujlwm rotor.Lub software algorithm siv cov sensors (Hall sensors los yog encoders) los pab lub cev muaj zog commutation lossis motor rotation.Cov brushless DC motors nrog sensors yog xav tau thaum daim ntawv thov yuav tsum tau pib nyob rau hauv siab load.
Yog hais tias lub brushless DC lub cev muaj zog tsis muaj sensor kom tau lub rotor txoj hauj lwm, tus qauv lej yog siv.Cov qauv lej no sawv cev rau qhov tsis muaj cov algorithms.Nyob rau hauv lub sensorless algorithm, lub cev muaj zog yog lub sensor.
Piv nrog rau txhuam lub cev muaj zog, brushless DC lub cev muaj zog thiab cov hlau nplaum ruaj khov synchronous lub cev muaj zog muaj qee qhov tseem ceeb.Lawv tuaj yeem siv txoj kev sib hloov hluav taws xob los tsav lub cev muaj zog, uas tuaj yeem txhim kho lub zog ntawm 20% mus rau 30%.
Niaj hnub no, ntau yam khoom xav tau kev sib txawv ntawm lub cev muaj zog.Cov motors no xav tau pulse width modulation (PWM) los hloov lub cav ceev.Pulse width modulation muab meej tswj ntawm lub cev muaj zog ceev thiab torque, thiab tuaj yeem paub qhov sib txawv ntawm qhov ceev.