Kiʻekiʻe hilinaʻi 86mm stepper

Ma muli o ka holomua ʻenehana, ke noho nei ka hoʻohui ʻana i ka mākeke mana kaʻa.Brushless DC motors (BLDC) a me permanent magnet synchronous motors (PMSM) o nā ʻano nui like ʻole a me nā mana densities e hoʻololi wikiwiki nei i nā topologies kaʻa e like me ka brushed AC/DC a me AC induction.
ʻO ka mīkini Brushless DC/permanent magnet synchronous ka hoʻolālā like me ka mechanically, koe wale ka stator winding.Hoʻohana ʻia kā lākou wili stator i nā hale geometric like ʻole.Kūʻē mau ka stator i ka magnet motor.Hiki i kēia mau kaʻa ke hāʻawi i ka torque kiʻekiʻe i ka wikiwiki haʻahaʻa, no laila kūpono loa lākou no nā noi kaʻa servo.
ʻAʻole pono nā motika DC Brushless a me nā kaʻa kaʻa hoʻomau mau i nā brushes a me nā commutators e hoʻokele i nā kaʻa, no laila ʻoi aku ka maikaʻi a me ka hilinaʻi ma mua o nā kaʻa brushed.
Hoʻohana ka mīkini Brushless DC a me ka mīkini paʻa paʻa synchronous i ka polokalamu mana algorithm ma mua o ka pulupulu a me ka mīkini commutator e hoʻokele i ka kaʻa e holo.
He maʻalahi loa ke ʻano mechanical o ka brushless DC motor a me ka magnet synchronous motor.Aia kekahi wili electromagnetic ma ka stator non-rotating o ke kaʻa.Hana ʻia me ka rotor mau loa.Hiki ke stator i loko a i waho paha, a kū'ē mau i ka magnet.Akā ʻo ka stator he ʻāpana paʻa mau, ʻoiai ʻo ka rotor he ʻāpana neʻe (wili).
Hiki ke loaʻa i ka mīkini Brushless DC he 1, 2, 3, 4 a i ʻole 5 mau ʻāpana.ʻOkoʻa paha ko lākou mau inoa a me nā algorithms hoʻokele, akā ʻaʻole lākou i brushless.
Loaʻa i kekahi mau motika DC brushless, hiki ke kōkua i ka loaʻa ʻana o ke kūlana rotor.Hoʻohana ka polokalamu algorithm i kēia mau mea ʻike (Hall sensors a i ʻole encoders) e kōkua i ka hoʻololi ʻana o ka kaʻa a i ʻole ka hoʻololi ʻana o ka kaʻa.Pono kēia mau motika DC brushless me nā mea ʻike i ka wā e hoʻomaka ai ka noi ma lalo o ka ukana kiʻekiʻe.
Inā ʻaʻohe mea ʻike o ka mīkini DC brushless e loaʻa ai ke kūlana rotor, hoʻohana ʻia ke kumu hoʻohālike makemakika.Hōʻike kēia mau hiʻohiʻona makemakika i nā algorithm sensorless.I ka algorithm sensorless, ʻo ka mīkini ka mea ʻike.
Hoʻohālikelike ʻia me ka mīkini palaki, ka mīkini DC brushless a me ka motor synchronous magnet mau loa kekahi mau pono ʻōnaehana koʻikoʻi.Hiki iā lākou ke hoʻohana i ka hoʻolālā uila uila e hoʻokele i ka kaʻa, hiki ke hoʻomaikaʻi i ka pono o ka ikehu e 20% a 30%.
I kēia mau lā, nui nā huahana e koi i ka wikiwiki o ka kaʻa.Pono kēia mau kaʻa i ka pulse width modulation (PWM) e hoʻololi i ka wikiwiki kaʻa.Hāʻawi ka Pulse width modulation i ka mana kūpono o ka wikiwiki a me ka torque, a hiki ke ʻike i ka wikiwiki loli.