Interfacing of a Stepper Motor Tarayya na Motori na Kudin Karama

Takaitaccen Mawakin Mawaki

Mawakin mawaki shi ne mawaki na DC wanda yake koyar da hali a hagu, tare da karfi na koyar da shi mai amfani da shi.

Gajeruwa

Mawakin yana da rotor (magnetinku daidai) da stator (winding), idan rotor yana koyar da stator yana bincike.

Siffar Gargajiya

Tapin tsakiyar stator winding yana ba da amincewar da ita ce ta zama a cikin ground. Wannan yana gudanar da alamar stator, tare da rotor ta koyar da shi don ya yi hagu.

Tsarin Hagu

Don samun hali na daidai a mawaki, ana bukata a yi tsari na hagu. Wannan tsari na hagu na bayyana voltaji da za su iya koyar da phase na stator. Amsa tsari na 4 na ke amfani da shi.

Idan an yi tsari daga step 1 zuwa 4, muna samu hagu na clock wise, idan an yi tsari daga step 4 zuwa 1, muna samu hagu na counter clockwise.

Diagram na Interfacing

Diagram tana nufin interfacing na mawakin mawaki zuwa micro-controller. Wannan diagram na biyu ko kuza yana iya amfani da shi a nan kowane micro-controller family kamar PIC micro-controller, AVR ko 8051 micro-controller.

Saboda microcontroller ba zan iya bayar da adadin amfani da shi, ana amfani da driver kamar ULN2003 don run mawaki. Ana iya amfani da individual transistors ko wasu driver ICs. Bayyana cewa pull-up resistors na baya suna haɗa da shi idan akwai buƙaci. Ba a fara mawaki kan pins na controller ba. Voltaji na mawaki yana da muhimmanci game da girman shi.

Mawakin mawaki na 4 phase uni-polar na da 5 terminals. 4 phase terminals da terminal na common na center tap wanda aka saka zuwa ground. Algoritomin programming don hagu na daidai a mode na clock wise tana bayyana a nan-

• Bayyana port pins da ake amfani da su don mawaki a matsayin outputs

• Yin program na delay na baya kamar 500 ms

• Basa first sequence-0 × 09 a pins

• Call delay function

• Basa second sequence-0 × 0 c a pins

• Call delay function

• Basa third sequence-0 × 06 a pins

• Call delay function

• Basa fourth sequence-0 × 03 a pins

• Call delay function

• Zama zuwa step 3

Angle na Step

Adadin steps da za su buƙata don samun hagu na daidai yana da muhimmanci game da angle na step na mawakin mawaki. Angle na step zai iya canzawa daga 0.72 degrees zuwa 15 degrees per step. Idan haka, za su buƙata 500 zuwa 24 steps don samun hagu na daidai. A cikin applications na control na position, za su zaba motor based on minimum degree of rotation da take da shi per step.

Half Stepping

Mawakin mawaki suna iya yi waƙo a half the actual step angle, wanda ake kira half stepping. Misali, mawaki da ake rate 15 degrees per step zan iya yin programming don koyar da shi a 7.5 degrees per step using special half-stepping sequence.

Mawakin Mawaki vs Mawakin Servo

Mawakin mawaki da mawakin servo suna amfani da su a cikin applications na control na position. Amma akwai farko a kan sarrafa da gajeruwa. Mawakin mawaki na da adadin poles ko teeth na daidai a rotor, kuma wannan teeth suna yi waƙo a matsayin magnetic north and south poles wadanda suka ci gaba ko ci abinda zuwa coil na stator. Wannan yana taimakawa hagu na mawaki.

A nan, a mawakin servo, position yana kontrola a nan specialized circuit da feedback mechanism, wadanda suka gina error signal don koyar da shaft na mawaki.