ʻO Stepper motor kahi mea hoʻoneʻe ʻokoʻa, nona kahi pilina koʻikoʻi me ka ʻenehana mana kikohoʻe hou.I ka ʻōnaehana hoʻokele kikohoʻe kūloko o kēia manawa, hoʻohana nui ʻia nā ʻenekini stepper.Me ka hiki ʻana mai o nā ʻōnaehana servo AC āpau, hoʻohana nui ʻia nā motika AC servo i nā ʻōnaehana mana kikohoʻe.I mea e hoʻololi ai i ke ʻano hoʻomohala o ka mana kikohoʻe, hoʻohana ʻia nā kaʻa stepper a i ʻole nā motors servo AC-digital āpau e like me nā kaʻa hoʻokō i nā ʻōnaehana neʻe.ʻOiai ua like nā mea ʻelua i ke ʻano mana (pulse train and direction signal), aia nā ʻokoʻa nui i ka hana a me nā manawa noi.I kēia manawa e hoʻohālikelike i ka hana o nā mea ʻelua.
ʻOkoʻa ka pololei o ka mana
ʻO nā ʻanuʻu ʻanuʻu o nā kaʻa stepper hybrid ʻelua he 3.6 degere a me 1.8 degere, a ʻo nā ʻanuʻu ʻanuʻu o nā ʻenekona stepper hybrid ʻelima mau ʻano he 0.72 degere a me 0.36 degere.Aia kekahi mau kaʻa stepper hana kiʻekiʻe me nā kihi ʻanuʻu liʻiliʻi.No ka laʻana, he ʻanuʻu kaʻa kaʻa i hana ʻia e ka Hui Pōhaku no ka neʻe lohi ʻana i nā mīkini mīkini uwea he 0.09 degere;he ʻekolu-phase hybrid stepping motor i hana ʻia e BERGER LAHR he ʻanuʻu ʻanuʻu o 0.09 degere.Hoʻonohonoho ʻia ka hoʻololi DIP i 1.8 degere, 0.9 degere, 0.72 degere, 0.36 degere, 0.18 degere, 0.09 degere, 0.072 degere, 0.036 degere, i kūpono me ka ʻanuʻu ʻanuʻu o ʻelua-phase a me ʻelima-phase hybrid stepping motors.
ʻO ka pololei o ka mana o ka AC servo motor e hōʻoiaʻiʻo ʻia e ka rotary encoder ma ka hope o ka pahu kaʻa.No ke kaʻa me kahi encoder laina 2500 maʻamau, ʻo ka pulse like he 360 degere/10000=0.036 degere ma muli o ka ʻenehana ʻenehana ʻehā i loko o ka mea hoʻokele.No ke kaʻa me ka 17-bit encoder, i kēlā me kēia manawa e loaʻa ai i ka mea hoʻokele 217=131072 pulses, hana ka motika i hoʻokahi hoʻololi, ʻo ia hoʻi, ʻo kona puʻupuʻu like he 360 degere/131072=9.89 kekona.ʻO ia ka 1/655 o ka pulse e like me kahi kaʻa stepper me kahi kihi ʻanuʻu o 1.8 degere.
ʻOkoʻa nā hiʻohiʻona haʻahaʻa haʻahaʻa:
Hiki i nā kaʻa stepper ke haʻalulu haʻahaʻa i nā haʻahaʻa haʻahaʻa.ʻO ke alapine vibration pili i ke kūlana ukana a me ka hana o ka mea hoʻokele.Manaʻo maʻamau ʻo ka haʻalulu haʻalulu ka hapalua o ka lawe ʻole ʻana i ka lawe ʻana o ke kaʻa.ʻO kēia hiʻohiʻona haʻahaʻa haʻahaʻa haʻahaʻa i hoʻoholo ʻia e ke kumu hana o ke kaʻa stepping he mea maikaʻi ʻole i ka hana maʻamau o ka mīkini.Ke hana ka kaʻa stepper i ka wikiwiki haʻahaʻa, pono e hoʻohana ʻia ka ʻenehana damping e lanakila ai i ke ʻano haʻahaʻa haʻahaʻa haʻahaʻa, e like me ka hoʻohui ʻana i kahi damper i ke kaʻa, a i ʻole ka hoʻohana ʻana i ka ʻenehana subdivision ma ke kaʻa, etc.
Holo mālie ke kaʻa AC servo a ʻaʻole haʻalulu ʻoiai me ka wikiwiki haʻahaʻa.Loaʻa i ka ʻōnaehana AC servo kahi hana resonance suppression, hiki ke uhi i ka nele o ka rigidity o ka mīkini, a loaʻa i ka ʻōnaehana kahi hana loiloi pinepine (FFT) i loko o ka ʻōnaehana, hiki ke ʻike i ka wahi resonance o ka mīkini a hoʻomaʻamaʻa i ka hoʻoponopono ʻōnaehana.
ʻOkoʻa nā ʻano o ka manawa-frequency:
E emi iho ana ka torque output o ka kaʻa stepper me ka piʻi ʻana o ka wikiwiki, a e hāʻule ʻo ia i ka wikiwiki kiʻekiʻe, no laila ʻo 300-600RPM ka wikiwiki o kāna hana.Loaʻa i ka AC servo motor kahi puka torque mau, ʻo ia hoʻi, hiki iā ia ke hoʻopuka i kahi torque i helu ʻia i loko o kona wikiwiki helu (maʻamau 2000RPM a i ʻole 3000RPM), a he mana mana mau ma luna o ka wikiwiki helu.
ʻOkoʻa ka mana overload:
ʻAʻole loaʻa i nā kaʻa stepper ka mana overload.Loaʻa i ka mīkini servo AC ka mana overload.E lawe i ka ʻōnaehana servo Panasonic AC ma ke ʻano he laʻana, loaʻa iā ia ka wikiwiki overload a me ka torque overload hiki.ʻO kona kiʻekiʻe kiʻekiʻe he ʻekolu manawa o ka torque i helu ʻia, hiki ke hoʻohana ʻia e lanakila ai i ka manawa o ka inertia o ka ukana inertial i ka manawa e hoʻomaka ai.No ka mea ʻaʻole loaʻa i ka stepper motor kēia ʻano o ka mana overload, i mea e lanakila ai i kēia manawa o ka inertia i ke koho ʻana i kahi hoʻohālike, pono pinepine e koho i kahi kaʻa me kahi ʻoi aku ka nui, a ʻaʻole pono ka mīkini i kahi torque nui i ka wā. ka hana maʻamau, no laila e ʻike ʻia ka torque.ʻO ke ʻano o ka ʻōpala.
He ʻokoʻa ka hana holo ʻana:
ʻO ka mana o ke kaʻa kaʻa kuʻekuʻe ʻo ia ka mana open-loop.Inā kiʻekiʻe loa ka alapine hoʻomaka a i ʻole ka nui o ka ukana, hiki koke mai ka nalo ʻana a i ʻole ke kūpaʻa.Ke kiʻekiʻe loa ka wikiwiki, hiki ke maʻalahi ka overshooting inā kiʻekiʻe ka wikiwiki.No laila, i mea e hōʻoiaʻiʻo ai i ka pololei o ka mana, pono e mālama pono ʻia.ʻO nā pilikia piʻi a me ka deceleration.ʻO ka ʻōnaehana hoʻokele servo AC ʻo ia ka mana pani pani.Hiki i ke kaʻa ke hōʻike pololei i ka hōʻailona manaʻo o ka encoder kaʻa, a ua hoʻokumu ʻia ka loop position internal a me ka loop loop.ʻO ka maʻamau, ʻaʻole e nalowale ka pae a i ʻole overshoot o ke kaʻa wāwae, a ʻoi aku ka hilinaʻi o ka hana hoʻomalu.
ʻOkoʻa ka hana pane wikiwiki:
He 200-400 milliseconds no ke kaʻa stepper e hoʻolalelale mai kahi kū a hiki i ka wikiwiki hana (maʻamau he mau haneli kipi i kēlā me kēia minuke).ʻOi aku ka maikaʻi o ka hana wikiwiki o ka ʻōnaehana AC servo.Ke lawe nei i ka CRT AC servo motor ma ke ʻano he laʻana, he mau milliseconds wale nō ia e wikiwiki ai mai ka static a hiki i kona wikiwiki helu ʻia o 3000RPM, hiki ke hoʻohana ʻia i nā manawa hoʻomalu e koi wikiwiki a hoʻomaka.
I ka hōʻuluʻulu ʻana, ʻoi aku ka maikaʻi o ka ʻōnaehana AC servo ma mua o ka mīkini stepper ma nā ʻano he nui o ka hana.Akā i kekahi mau manawa koi ʻole, hoʻohana pinepine ʻia nā kaʻa stepper e like me nā kaʻa hoʻokele.No laila, i ke kaʻina hana hoʻolālā o ka ʻōnaehana hoʻokele, pono e noʻonoʻo ʻia nā ʻano like ʻole e like me nā koi hoʻomalu a me nā kumukūʻai, a pono ke koho ʻia kahi kaʻa mana kūpono.
ʻO ke kaʻa stepper he mea hana ia e hoʻololi i nā pulu uila i ka neʻe ʻana o ka angular.Ma nā ʻōlelo a ka poʻe kamaʻāina: ke loaʻa i ka mea hoʻokele stepper kahi hōʻailona pulse, hoʻokele ia i ka mīkini stepper e hoʻohuli i kahi kihi paʻa (a me ka angle stepper) ma ke ala i hoʻonohonoho ʻia.
Hiki iā ʻoe ke hoʻomalu i ka neʻe ʻana o ka angular ma ka mālama ʻana i ka helu o nā pulses, i mea e hoʻokō ai i ke kumu o ke kūlana kūpono;i ka manawa like, hiki iā ʻoe ke hoʻomalu i ka wikiwiki a me ka wikiwiki o ka hoʻololi ʻana o ka kaʻa ma o ka hoʻomalu ʻana i ka frequency pulse, i mea e hoʻokō ai i ke kumu o ka hoʻoponopono wikiwiki.
ʻEkolu ʻano o nā kaʻa stepper: permanent magnet (PM), reactive (VR) a me hybrid (HB).
ʻO ka piʻi ʻana o ka magnet mau loa he ʻelua-phase, me ka torque liʻiliʻi a me ka leo, a ʻo ke kihi ʻanuʻu he 7.5 degere a i ʻole 15 degere;
ʻO ka hele wāwae ʻana he ʻekolu-phase, hiki ke hoʻomaopopo i ka puka ʻana o ka torque nui, a ʻo ke kihi kuʻekuʻe he 1.5 degere, akā nui ka walaʻau a me ka haʻalulu.Ma nā ʻāina i kūkulu ʻia e like me ʻEulopa a me ʻAmelika Hui Pū ʻIa, ua hoʻopau ʻia i ka makahiki 1980;
ʻO ka hybrid stepper e pili ana i ka hui pū ʻana o nā pono o ke ʻano magnet mau a me ke ʻano reactive.Hoʻokaʻawale ʻia ʻo ia i ʻelua-phase a me ʻelima-phase: ʻo ka huina ʻelua ʻanuʻu i ka maʻamau 1.8 degere a ʻo ka ʻelima pae ʻanuʻu ʻo ka maʻamau 0.72 degere.ʻO kēia ʻano kaʻa stepper ka mea i hoʻohana nui ʻia.
Ka manawa hoʻouna: Mar-25-2023