nkhani

Kwa zaka zambiri tikupereka ma micro DC motors kwa makasitomala a magalimoto, azachipatala, komanso ogula zamagetsi, tasonkhanitsa mafunso omwe amafunsidwa kawirikawiri. Nazi mafunso asanu apamwamba, ndi mayankho othandiza ochokera ku gulu lathu la mainjiniya a fakitale.

Q1: Mota yanga ndi yaphokoso kwambiri kuposa momwe ndimayembekezera - vuto lingakhale chiyani?

Phokoso nthawi zambiri limachokera ku magwero a makina kapena amagetsi. Makina: onani ngati zomangira zomangira ndi zazitali kwambiri, zomwe zimapangitsa kuti zigwirizane mkati, kapena ngati cholumikizira cha shaft sichili bwino. Zamagetsi: Ma mota opukutidwa ndi brushed amatulutsa phokoso loyaka; kuwonjezera ceramic capacitor (0.1µF) kudutsa ma terminals kungathandize kuchepetsa phokosolo. Kuti mumve phokoso lokwera pafupipafupi, sinthani ku BLDC kapena mota yopanda core.

Q2: Injini imayamba mosinthasintha kapena imayima pansi pa katundu wopepuka.

Izi nthawi zambiri zimakhala kutsika kwa magetsi kapena torque yoyambira yosakwanira. Yesani magetsi pa malo olumikizirana magalimoto - mawaya ataliatali owonda amatha kutsika kwambiri. Komanso, ma micro motors amafunika starting current yapamwamba kuposa power current yothamanga. Onetsetsani kuti magetsi anu akhoza kupereka starting current yochepera kawiri kuposa starting current yoyesedwa kwa ma milliseconds angapo. Ngati vuto likupitirira, yesani mota yokhala ndi torque yayikulu kapena giya yotsika.

Q3: Kodi ndingateteze bwanji mota ku mavuto a EMC/EMI?

Ma mota opangidwa ndi burashi amadziwika bwino ndi utsi wotulutsa mpweya woipa womwe umatuluka ndi kutulutsidwa.

Ma capacitor a solder (nthawi zambiri 0.1µF + 0.01µF) kuchokera ku terminal iliyonse kupita ku bokosi.

Gwiritsani ntchito mawaya opotoka ndi mkanda wa ferrite pafupi ndi mota.

Kuti mutsatire malamulo okhwima (monga zachipatala kapena zamagalimoto), ganizirani za mota ya BLDC - kusintha kwake kwamagetsi sikubweretsa kusokoneza kwakukulu.

Q4: Kodi kutentha kogwira ntchito kotetezeka ndi kotani?

Ma mota ambiri a micro DC amagwiritsa ntchito kutchinjiriza kwa kalasi E (120°C) kapena kalasi B (130°C). Kutentha kwa mlengalenga kuphatikiza kutentha komwe kumadzitenthetsera kuyenera kukhala pansi pa malire awa. Nthawi zambiri, bokosi la mota siliyenera kupitirira 85°C pama mota opukutidwa, kapena 100°C pa BLDC. Kutentha kwambiri kumawononga maginito ndi mafuta. Pamalo otentha (monga zipinda za injini), pemphani maginito ndi mafuta otentha kwambiri.

Q5: Kodi ndingatani kuti ndiwonjezere moyo wa injini ndikugwira ntchito mosalekeza?

Moyo umachepetsedwa ndi kuvala burashi (ma mota opukutidwa) kapena kuvala ma bearing (ma mota onse). Kuti mukhale ndi moyo wabwino kwambiri:

Thamangani pa mphamvu yamagetsi yotsika kwambiri yomwe ikugwirizana ndi liwiro/torque yanu - kutentha kochepa, burashi yochepa.

Pewani kuyamba/kusiya kugwira ntchito pafupipafupi - kuyamba kulikonse kumabweretsa mphamvu ya burashi yambiri.

Sungani fumbi ndi chinyezi m'malo mwake - gwiritsani ntchito malo otetezedwa ndi IP kapena onjezerani chisindikizo cha shaft.

Pa ntchito 24/7, sinthani ku mota ya BLDC - nthawi yogwiritsira ntchito burashi si vuto.