Stepper mota ndeye discrete inofamba mudziyo, ine yakakosha yekubatanidza neyemazuva ano yedhijitari yekudzora tekinoroji.Mune yazvino yedzimba dhijitari control system, stepper motors anoshandiswa zvakanyanya.Nekubuda kweese-digital AC servo masisitimu, AC servo mota dziri kuwedzera kushandiswa mumadhijitari ekudzora masisitimu.Kuti uenderane nemaitiro ekusimudzira ekutonga kwedhijitari, ma stepper motors kana ese-digital AC servo motors anonyanya kushandiswa sema Executive motors mumafambiro ekudzora masisitimu.Kunyangwe ese ari maviri akafanana mukudzora modhi (kupuruzira chitima uye chiratidzo chekutungamira), pane misiyano mikuru mukuita uye zviitiko zvekushandisa.Zvino enzanisa kushanda kwezviviri.
Kurongeka kwekutonga kwakasiyana
Matanho emakona maviri-chikamu hybrid stepper motors anowanzo 3.6 madhigirii uye 1.8 madhigirii, uye nhanho makona eshanu-chikamu hybrid stepper motors anowanzo 0.72 madhigirii uye 0.36 madhigirii.Kune zvakare mamwe epamusoro-anoita stepper motors ane madiki nhanho angles.Semuyenzaniso, mota inotsika inogadzirwa neStone Company yematurusi emuchina wewaya inononoka ine nhanho yemadhigirii 0.09; matatu-phase hybrid stepping motor inogadzirwa neBERGER LAHR ine nhanho yekona ye0.09 madhigirii. DIP Switch inoiswa kune 1.8 madhigirii, 0.9 madhigirii, 0.72 madhigirii, 0.36 madhigirii, 0.18 madhigirii, 0.09 madhigirii, 0.072 madhigirii, 0.036 madhigirii, inowirirana danho pakona maviri-chikamu uye shanu-chikamu hybrid stepping motors.
Iko kurongeka kwekutonga kweiyo AC servo mota inovimbiswa neinotenderera encoder kumucheto kumashure kwemota shaft.Kumota ine standard 2500-line encoder, pulse yakaenzana i360 degrees/10000=0.036 degrees nekuda kwequadruple frequency technology mukati memutyairi.Kune mota ine 17-bit encoder, pese mutyairi paanogashira 217=131072 pulses, mota inoita shanduko imwe chete, kureva kuti, pulse yayo yakaenzana i360 degrees/131072 =9.89 seconds.Iyo 1/655 yepulse yakaenzana neye stepper mota ine nhanho angle ye1.8 madhigirii.
Iwo low frequency maitiro akasiyana:
Stepper mota dzinowanzoita yakaderera-frequency vibrations pakumhanya kwakaderera.Iyo vibration frequency inoenderana nemamiriro ekuremerwa uye kuita kwemutyairi. Zvinowanzotendwa kuti vibration frequency ihafu yeasina-mutoro wekutora-off frequency yemota.Iyi yakaderera-frequency vibration phenomenon inotarwa nemusimboti wekushanda weinotsika mota haina kunaka kune yakajairika kushanda kwemuchina.Kana iyo stepper mota ichishanda nekumhanya kwakaderera, tekinoroji yekudzikisa inofanirwa kushandiswa kukurira yakaderera-frequency vibration phenomenon, sekuwedzera damper kumota, kana kushandisa tekinoroji yekuparadzanisa pamutyairi, nezvimwe.
Iyo AC servo mota inomhanya zvakanyanya uye haizungunuke kunyangwe pakumhanya kwakaderera.Iyo AC servo system ine resonance suppression function, iyo inogona kuvhara kushaikwa kwekuomarara kwemuchina, uye sisitimu ine frequency yekuongorora basa (FFT) mukati meiyo system, iyo inogona kuona resonance point yemuchina uye kufambisa kugadzirisa system.
The moment-frequency maitiro akasiyana:
Iyo inobuda torque yeinotsika mota inodzikira nekuwedzera kwekumhanya, uye inodonha zvakanyanya nekumhanya kwakanyanya, saka iyo yakanyanya kumhanya yekushanda inowanzo 300-600RPM.Iyo AC servo mota ine inogara ichibuda torque, kureva kuti, inogona kuburitsa yakayerwa torque mukati mekumhanya kwayo yakayerwa (kazhinji 2000RPM kana 3000RPM), uye inogara ichibuda simba pamusoro pekumhanya kwakayerwa.
Kuwanda kwehuwandu hwakasiyana:
Stepper motors kazhinji haina kuwandisa kugona.AC servo mota ine simba rakawandisa.Tora iyo Panasonic AC servo system semuenzaniso, ine kumhanya yakawandisa uye torque yakawandisa masimba.Iyo yakakura torque yakapetwa katatu yeiyo yakayerwa torque, iyo inogona kushandiswa kukurira iyo inertia yeinertial mutoro panguva yekutanga.Nekuti iyo stepper mota haina rudzi urwu rwekuremedza huwandu, kuti ukunde iyi nguva ye inertia pakusarudza modhi, zvinowanzodikanwa kusarudza mota ine torque yakakura, uye muchina haudi torque yakakura kudaro panguva. zvakajairika kushanda, saka torque inooneka. Chiitiko chemarara.
Running performance yakasiyana:
Kudzora kweinotsika mota ndeye yakavhurika-loop control. Kana iyo yekutanga frequency yakawandisa kana mutoro wakakurisa, kurasikirwa kwenhanho kana kumira kunoitika nyore. Kana kumhanya kwanyanya, overshooting ichaitika nyore kana kumhanya kwakanyanya. Nokudaro, kuitira kuti kuve nechokwadi chekutonga kwayo kwakarurama, inofanira kubatwa nemazvo. Makwikwi uye deceleration nyaya.Iyo AC servo drive system yakavharwa-loop control. Iyo dhiraivha inogona kuenzanisa zvakananga chiratidzo chemhinduro chemotor encoder, uye iyo yemukati chinzvimbo loop uye yekumhanyisa loop inoumbwa. Kazhinji, hapazovi nekurasikirwa kwenhanho kana kuwanda kweiyo inotsika mota, uye kuita kwekutonga kunonyanya kuvimbika.
Kumhanya kwekupindura kuita kwakasiyana:
Zvinotora 200-400 milliseconds kuti stepper mota ikurumidze kubva payakamira kuenda kune yekushanda kumhanya (kazhinji mazana akati wandei ekuchinja paminiti).Iko kukurumidza kuita kweAC servo system iri nani. Kutora iyo CRT AC servo mota semuenzaniso, zvinongotora mashoma milliseconds kuti ikurumidze kubva pastatic kusvika kune yayo yakatemerwa kumhanya ye3000RPM, iyo inogona kushandiswa mukutonga zviitiko zvinoda kukurumidza kutanga nekumira.
Kupfupisa, iyo AC servo system yakakwirira kune inotsika mota mune akawanda maficha ekuita.Asi mune dzimwe nguva dzisinganyanyi kudiwa, stepper motors dzinowanzo shandiswa semamotor motors.Naizvozvo, mukugadzira dhizaini yekudzora sisitimu, zvinhu zvakasiyana-siyana senge zvinodikanwa zvekutonga uye mutengo zvinofanirwa kutariswa zvakazara, uye yakakodzera kutonga mota inofanirwa kusarudzwa.
A stepper mota ndeye actuator inoshandura magetsi emagetsi kuita angular displacement.Mukutaura kwe layman: kana mutyairi wenhanho agamuchira chiratidzo chepulse, inotyaira mota inotsika kutenderedza yakagadziriswa kona (uye nhanho angle) munzira yakatarwa.
Iwe unogona kudzora kusimuka kweangular nekudzora huwandu hwemapulses, kuitira kuti uwane chinangwa chechokwadi chinzvimbo; panguva imwecheteyo, iwe unogona kudzora kumhanya uye kukurumidza kwemota kutenderera nekudzora pulse frequency, kuitira kuti uwane chinangwa chekudzora kumhanya.
Kune marudzi matatu emamotor anotsika: anogara magineti (PM), reactive (VR) uye hybrid (HB).
Permanent magineti kutsika kazhinji maviri-phase, ine diki torque uye vhoriyamu, uye nhanho kona kazhinji 7.5 madhigirii kana 15 madhigirii;
Reactive nhanho inowanzoita nhanho-nhatu, iyo inogona kuona yakakura torque kuburitsa, uye kona yekukwira inowanzo 1.5 madhigirii, asi ruzha uye vibration zvakakura kwazvo.Munyika dzakabudirira dzakadai seEurope neUnited States, yakabviswa muma1980;
iyo hybrid stepper inoreva musanganiswa wezvakanakira zvechigarire magineti mhando uye reactive mhando.Iyo yakakamurwa kuita maviri-chikamu uye shanu-chikamu: maviri-chikamu nhanho angle inowanzoitika 1.8 madhigirii uye mashanu-chikamu nhanho angle kazhinji 0.72 madhigirii.Iyi mhando ye stepper mota ndiyo inonyanya kushandiswa.
Nguva yekutumira: Mar-25-2023