PLC uye Stepper Driver Control Principle
PLC uye Stepper Driver Control Principle
Kudzora Principle
Stepper motors inowanzoshandiswa pakuisa kudzora. Iwo anogona kudzorwa nenhamba yemapulses anobuda nePLC kuti atarise kona yekutenderera (uye nekudaro chinhambwe), ine pulse frequency inoronga kumhanya kwemota. Stepper mota masisitimu ari nyore, anodhura - anoshanda, uye ari nyore kudzora, achiaita akakodzera maapplication uko kurongeka kwekutonga hakuna kunyanya kunetsa. Kune yakakwirira-chaiyo kudzora mamiriro, servo control masisitimu anowanzo kudiwa.
A stepper system inosanganisira mutyairi anotsika uye anotsika mota. Iyo stepper mota inofambiswa nemutyairi anotsika, anoita sesimba sosi. Mutyairi anodzorwa nekunze kupuruzira uye masaini masaini (mumuenzaniso uyu, pulses kubva kuSiemens PLC), nekudaro achigadzirisa mota yekutenderera kona uye kumhanya.
Tsanangudzo Dzakakosha
1. Mutyairi:Murevereri pakati pePLC uye stepper mota. Inokwidziridza masiginecha kubva kuPLC uye yoaendesa kune inotsika mota, zvichiita kuti mota ishande zvinoenderana nemaparamita akaiswa nePLC uye mutyairi.
2. Step Angle:Iyo kona iyo iyo stepper mota inotenderera nepuru yega yega. Yakajairika nhanho kona ndeye 1.8 °, iyo isingawanzo kuchinjika.
Muenzaniso: Mangani mapulses ayo PLC inoda kuburitsa kutenderedza mota inotsika ine nhanho angle ye1.8 ° kuburikidza nekumwe kuzara kuzere (360 °) pasina microstepping?
Mhinduro: 360 ° / X = 1.8 ° / 1 ⇒ X = 200 pulses.
3. Microsteping:Mumashandisirwo anoshanda, hombe nhanho kona inogona kukonzera kwakakosha vibration uye kuwedzera zvikanganiso zvekudzora. Microstepping inokamura nhanho yekona kuita zvidimbu zvidiki uchishandisa mutyairi DIP switch, zvichikonzera kushanda kwakapfava mota.
Muenzaniso: Kana nhanho yekona iri 1.8° uye microstepping ikaiswa ku10, mapinzi mangani anodiwa kuti mota ipedze kutenderera kuzere?
Mhinduro: 360 ° / X = (1.8° / 10) / 1 ⇒ X = 2000 pulses.
Pfupiso: A hombe nhanho kona inoda mashoma mapurusi, nepo diki nhanho kona inoda mamwe mapurusi.
Stepper System Hardware (Kushandisa Phidgets Stepper Motor seMuenzaniso)
1. Stepper Driver
Pulse + Direction Control: Kana pulse yagadzirwa paPUL, mota inotenderera, negwara rakatemwa neDIR.
Forward Pulse + Reverse Pulse Control: Pulses paPUL inoita kuti mota itenderere mberi, ukuwo mapuruzi paDIR achiita kuti itenderere ichidzokera kumashure. PUL uye DIR haifanire kuburitsa pulses panguva imwe chete.
2. Stepper Motor
Kana iyo A uye B chikamu mahwindi akachinjika, mota inotenderera ichienda kune yakatarisana.
Chiratidzo chemagetsi cheiyo stepper motor ndeye 5 V, nepo Siemens PLC inoshanda pa 24 V. A 1.2 K, 1/4 W resistor inofanira kubatanidzwa munhevedzano kana ichibatanidza kumutyairi, sezvinoratidzwa muchikamu chitsvuku chemufananidzo.
Iyo Siemens PLC (CPU222) inotsigira mhando mbiri dzepamusoro-kumhanya kwepuruzi kubuda:
PTO (Pulse Train Output): 50% basa kutenderera.
PWM (Pulse - Width Modulation): Inogadziriswa basa kutenderera.
Aya akakwira-kumhanyisa pulse kubuda anogona kushandiswa kudzora stepper mutyairi uye kufamba uye kumhanya kweiyo chaiyo michina.