Photoelectric encoder yɛ sensor a ɛdannan mfiri geometric displacement a ɛwɔ output shaft no so kɔ pulses anaa digital dodoɔ mu denam photoelectric nsakraeɛ so, na ɛyɛ sensor a wɔde di dwuma kɛseɛ. General photoelectric encoder no titiriw yɛ grating disc ne photoelectric detection afiri. Wɔ servo nhyehyɛe no mu no, esiane sɛ photoelectric encoder no ne motor no yɛ coaxial nti, sɛ motor no di akɔneaba a, grating disk no di akɔneaba wɔ ahoɔhare koro no ara mu sɛnea motor no di akɔneaba. Afiri a wɔde hu ade a ɛyɛ hann-a ɛma hann-diodes ne ɛlɛtrɔnik nneɛma afoforo hu na ɛde pulse nsɛnkyerɛnne pii ba. Wobetumi ada mprempren motor ahoɔhare adi denam akontaabu a wobebu photoelectric encoder no output pulses dodow a ɛwɔ sekan biara mu no so. Bio nso, sɛnea ɛbɛyɛ a wobehu akwankyerɛ a ɛkyinkyini no, encoder no nso betumi ama abien-channel optical code output a phase nsonsonoe yɛ 90℃, na akyerɛ sɛnea motor no di akɔneaba sɛnea tebea nsakrae a ɛwɔ dual-channel optical code no mu te. Sɛnea detection nnyinasosɛm kyerɛ no, wobetumi akyekyɛ encoders mu ayɛ no optical, magnetic, inductive ne capacitive. Sɛnea ne scale kwan ne signal output form te no, wobetumi akyekyɛ mu abiɛsa: incremental, absolute ne mixed.
Encoder a ɛkɔ soro
Incremental encoders de nnyinasosɛm a ɛfa photoelectric nsakrae ho di dwuma tẽẽ de pue asorɔkye a ɛyɛ ahinanan a ɛyɛ ahinanan A, B ne Z phase abiɛsa; A ne B pulse ahorow abien wɔ phase nsonsonoe a ɛyɛ 90℃, sɛnea ɛbɛyɛ a wobetumi abu akwankyerɛ a ɛkyinkyini no atɛn ntɛm, na Z phase no yɛ revolution biara Wɔde pulse biako di dwuma ma reference point positioning. Ne mfasoɔ ne ne nhyehyɛeɛ a ɛnyɛ den, sɛ wɔkyekyɛ mu a, mfiri nkwa nna bɛboro nnɔnhwereɛ mpempem du du, tumi a emu yɛ den a ɛko tia-ntwitwiridiiɛ, ahotosoɔ a ɛkorɔn, na ɛfata ma akyirikyiri-kwan tenten nkra. Nea enye wɔ ho ne sɛ wontumi mfa gyinabea ho nsɛm a edi mũ a ɛfa shaft rotation no ho no mfi adi.
Encoder a ɛyɛ pɛpɛɛpɛ
Encoder a ɛyɛ pɛpɛɛpɛ no yɛ sensor a ɛde dijitaal dodow fi adi tẽẽ. Concentric code tracks pii wɔ radial kwankyerɛ no so wɔ ne kurukuruwa code disc no so. Track biara yɛ hann-transmissive ne opaque sectors. The fans of adjacent code channels Zone dodow no yɛ abusuabɔ abien. Code channels dodow a ɛwɔ code wheel no so no yɛ binary digits dodow. Wɔ koodu ntwahonan no fã biako no, hann fibea no wɔ, na ɔfã foforo no wɔ ade bi a ɛma hann te a ɛne mmara kwan biara hyia; bere a code wheel no wɔ gyinabea ahorow Bere a, photosensitive element biara dannan level signal a ɛne no hyia sɛnea enya hann anaasɛ ɛnnye, na ɛyɛ binary number. Encoder a ɛte sɛɛ su ne sɛ enhia counter, na wobetumi akenkan dijitaal code a ɛyɛ pintinn a ɛne gyinabea no hyia wɔ shaft no gyinabea biara. Ɛda adi sɛ dodow a code channels dɔɔso no, dodow no ara na resolution no yɛ kɛse. Wɔ encoder a ɛwɔ N-bit binary resolution ho no, ɛsɛ sɛ code disk no nya N code channels. 21-bit absolute encoder nneɛma wɔ China dedaw.
Encoder a ɛyɛ pɛpɛɛpɛ no de abɔde mu binary anaa cyclic binary (Grey code) kwan di dwuma ma photoelectric nsakrae. Nsonsonoe a ɛda absolute encoder ne incremental encoder ntam ne transparent ne opaque line pattern a ɛwɔ disc no so. Encoder a ɛyɛ pɛpɛɛpɛ no betumi anya mmara ahorow pii, na wobetumi ahu gyinabea a edi mũ no sɛnea mmara a ɛwɔ akenkan koodu diski no so no te. Coding nhyehyeɛ no tumi fa binary code, cyclic code, two's complement code, ne nea ɛkeka ho Ne nneɛma soronko ne:
Wobetumi akenkan angle coordinate no bo a ɛsom koraa no tẽẽ; mfomso biara nni hɔ a wɔaboaboa ano; gyinabea ho nsɛm renyera bere a wɔatwa anyinam ahoɔden no akyi. Nanso, wɔde bit dodow a ɛwɔ binary system no mu na ɛkyerɛ resolution no, a ɛkyerɛ sɛ pɛpɛɛpɛyɛ no gyina bit dodow so.
Hybrid a ɛyɛ pɛpɛɛpɛ encoder
Hybrid absolute encoder, ɛde nsɛm abien ba: wɔde nsɛm biako di dwuma de hu magnetic pole gyinabea, a nsɛm a ɛyɛ pɛpɛɛpɛ dwumadi ka ho; set foforo no ne incremental encoder no output information no yɛ pɛ pɛpɛɛpɛ.
