ʻO ka hiʻohiʻona pololei loa o nā motika asynchronous ʻo ia ka ʻokoʻa ma waena o ka wikiwiki maoli o ka motika a me ka wikiwiki o ke kahua magnetic, ʻo ia hoʻi, aia kahi paheʻe; ke hoʻohālikelike ʻia me nā ʻāpana hana ʻē aʻe o ka kaʻa, ʻo ka paheʻe o ke kaʻa ka mea maʻalahi loa e loaʻa, a hiki i kēlā me kēia mea hoʻohana kaʻa ke hoʻohana i kekahi mea maʻalahi.
I ka hōʻike ʻana i nā ʻāpana hana o ke kaʻa, he mea koʻikoʻi ka nui o ka paheʻe, kahi i hōʻike ʻia e ka pākēneka o ka paheʻe e pili ana i ka wikiwiki synchronous. o.No ka laʻana, he ʻokoʻa nui ka motika 2-pole alapine mana me ka helu paheʻe o 1.8% a me ka motika 12-pole i ka paheʻe maoli maoli. Ke like ka helu paheʻe me 1.8%, ʻo 3000 × 1.8% = 54 rpm ka paheʻe o ka mīkini mana asynchronous 2-pole, ʻo ka paheʻe o ka mīkini uila mana 12-pole he 500 × 1.8% = 9 rpm.Pēlā nō, no nā kaʻa me nā pou like ʻole me ka paheʻe hoʻokahi, ʻokoʻa nō hoʻi nā ratio paheʻe pili.
Mai ka hoʻohālikelike hoʻohālikelike o nā manaʻo o ka paheʻe a me ka paheʻe, ʻo ka paheʻe he waiwai paʻa, ʻo ia hoʻi, ka ʻokoʻa loa ma waena o ka wikiwiki maoli a me ka māmā māmā magnetic synchronous, a ʻo ka ʻāpana he rev/min; ʻoiai ʻo ka paheʻe ka ʻokoʻa ma waena o ka paheʻe a me ka wikiwiki synchronous. pākēneka.
No laila, pono e ʻike ʻia ka wikiwiki synchronous a me ka wikiwiki maoli o ke kaʻa i ka helu ʻana i ka paheʻe.Hoʻokumu ʻia ka helu ʻana o ka wikiwiki synchronous o ke kaʻa ma ke ʻano n = 60f/p (kahi f ʻo ia ke alapine i helu ʻia o ke kaʻa, a ʻo ka p ka helu o nā pole o ka motika); no laila, ʻo ka māmā holo synchronous e pili ana i ke alapine mana 2, 4, 6, 8, 10 a me 12 ʻO nā wikiwiki he 3000, 1500, 1000, 750, 600 a me 500 rpm.
Hiki ke ʻike ʻia ka wikiwiki maoli o ke kaʻa e ka tachometer, a helu pū ʻia e like me ka helu o nā kipi i kēlā me kēia minuke.ʻO ka wikiwiki maoli o ka motika asynchronous ka emi ma mua o ka wikiwiki synchronous, a ʻo ka ʻokoʻa ma waena o ka wikiwiki synchronous a me ka wikiwiki maoli ka paheʻe o ka motika asynchronous, a ʻo ka ʻāpana he rev / min.
Nui nā ʻano tachometers, a ʻo nā tachometers uila he manaʻo maʻamau: ʻo nā mea hana ana ka wikiwiki o ka rotational i hoʻolālā ʻia a hana ʻia ma muli o ka ʻenehana uila hou i loaʻa nā mea ʻike a me nā hōʻike, a ʻo kekahi kekahi i loaʻa ka hōʻailona a me ka mana.ʻOkoʻa mai ka ʻenehana ana wikiwiki photoelectric, ʻaʻole pono ka inductive tachometer e hoʻokomo i kahi sensor photoelectric, ʻaʻohe hoʻonui ʻia o ka pahu kaʻa, a hiki ke hoʻohana ʻia i ka ʻoihana pā wai a me nā ʻoihana ʻē aʻe kahi paʻakikī e hoʻokomo i nā sensor.
Ka manawa hoʻouna: Mar-30-2023