I. Nhanganyaya
Mvura Inogona Kubatidza Makenduru, Ichokwadi Here? Ichokwadi!
Ichokwadi here kuti nyoka dzinotya realgar? Inhema!
Zvatichakurukura nhasi ndeizvi:
Kupindira kunogona kuvandudza kururama kwekuyera, ichokwadi here?
Mumamiriro ezvinhu akajairwa, kupindirana ndicho muvengi wechisikigo wekuyera. Kupindirana kunoderedza kunyatsorongeka kwekuyera. Muzviitiko zvakakomba, kuyera hakuzoitwe zvakajairika. Kubva pamaonero aya, kupindirana kunogona kuvandudza kunyatsorongeka kwekuyera, izvo zvisiri zvechokwadi!
Zvisinei, izvi ndizvo zvinoitika nguva dzose here? Pane here mamiriro ezvinhu apo kupindirana kusingaderedzi kururama kwekuyera, asi kunovandudza?
Mhinduro yacho ndeyekuti hongu!
2. Chibvumirano Chekupindira
Pamwe chete nemamiriro ezvinhu chaiwo, tinoita chibvumirano chinotevera pakupindira:
- Kupindirana hakuna zvikamu zveDC. Pakuyera chaiko, kupindirana kunonyanya kukonzerwa nekupindirana kweAC, uye fungidziro iyi ine musoro.
- Kana tichienzanisa nemagetsi eDC akayerwa, amplitude yekupindira idiki. Izvi zvinoenderana nemamiriro chaiwo.
- Kupindirana chiratidzo chenguva nenguva, kana kuti chiyero chepakati chiri zero mukati menguva yakatarwa. Pfungwa iyi haisi yechokwadi pakuyera chaiko. Zvisinei, sezvo kupindirana kunowanzova chiratidzo cheAC chakakwira, kune kupindirana kwakawanda, tsika ye zero avhareji inonzwisisika kwenguva yakareba.
3. Kururama kwekuyera pasi pekukanganiswa
Zvishandiso zvakawanda zvekuyera zvemagetsi nemamita zvino zvinoshandisa maAD converters, uye kurongeka kwawo kwekuyera kwakabatana zvakanyanya nekugadziriswa kweAD converter. Kazhinji, maAD converters ane resolution yepamusoro ane kurongeka kwakanyanya kwekuyera.
Zvisinei, resolution yeAD inogara yakaganhurirwa. Tichifunga kuti resolution yeAD i3 bits uye voltage yepamusoro yekuyera i8V, AD converter yakaenzana nechikero chakakamurwa kuita 8 divisions, division yega yega i1V. i1V. Mhedzisiro yekuyera yeAD iyi inogara iri integer, uye chikamu chedecimal chinogara chichitakurwa kana kuraswa, icho chinofungidzirwa kuti chinotakurwa mupepa rino. Kutakura kana kurasa kunokonzera zvikanganiso zvekuyera. Semuenzaniso, 6.3V yakakura kupfuura 6V uye iri pasi pe7V. Mhedzisiro yekuyera yeAD i7V, uye pane zvikanganiso zve0.7V. Tinodaidza izvi kuti error AD quantization error.
Kuti zvive nyore kuongorora, tinofunga kuti chikero (AD converter) hachina zvimwe zvikanganiso zvekuyera kunze kwekukanganisa kweAD quantization.
Zvino, tinoshandisa zviyero zviviri zvakafanana kuyera mavoltage maviri eDC anoratidzwa muMufananidzo 1 pasina kupindira (mamiriro ezvinhu akakodzera) uye nekupindira.
Sezvakaratidzwa paMufananidzo 1, voltage chaiyo yeDC yakayerwa i6.3V, uye voltage yeDC iri kuruboshwe haina kupindirana, uye inhamba isingachinji. Mufananidzo uri kurudyi unoratidza current yakananga yakakanganiswa nealternating current, uye pane kuchinja-chinja kwemutengo. Voltage yeDC iri kurudyi yakaenzana nevoltage yeDC iri kuruboshwe mushure mekubvisa chiratidzo chekupindirana. Sikweya tsvuku iri pamufananidzo inomiririra mhedzisiro yekushandurwa kweAD converter.
Voltage yeDC yakakodzera pasina kukanganiswa
Isa voltage yeDC inopindira ine avhareji ye zero
Ita zviyero gumi zve direct current muzviitiko zviviri zviri mumufananidzo uri pamusoro, wobva waenzanisa zviyero gumi.
Chikero chekutanga kuruboshwe chinoyerwa kagumi, uye kuverenga kwacho kwakafanana nguva imwe neimwe. Nekuda kwemhedzisiro yekukanganisa kweAD quantization, kuverenga kwega kwega kunosvika 7V. Mushure mekunge zviyero gumi zvayerwa, mhedzisiro yacho ichiri 7V. Kukanganisa kweAD quantization kunosvika 0.7V, uye kukanganisa kwekuyera kunosvika 0.7V.
Chikero chechipiri kurudyi chachinja zvikuru:
Nekuda kwemusiyano uripo pakati pezvakanaka nezvakaipa zvemagetsi ekupindira uye amplitude, kukanganisa kweAD quantization kwakasiyana pamatanho akasiyana ekuyera. Pasi pekuchinja kweAD quantization error, mhedzisiro yekuyera AD inoshanduka pakati pe6V ne7V. Zvinomwe zvezviyero zvaive 7V, zvitatu chete zvaive 6V, uye avhareji yezviyero gumi yaive 6.3V! Chikanganiso i0V!
Kutaura zvazviri, hapana chikanganiso chisingagoneke, nekuti munyika isina chinangwa, hapana 6.3V yakasimba! Zvisinei, zvechokwadi kune:
Kana pasina kupindira, sezvo mhedzisiro yega yega yekuyera yakafanana, mushure meavhareji yekuyera gumi, chikanganiso chinoramba chisina kuchinja!
Kana paine kupindira kwakakodzera, mushure mekunge zviyero gumi zvayerwa, kukanganisa kweAD quantization kunoderedzwa nehurongwa hwehukuru! Resolution inovandudzwa nehurongwa hwehukuru! Kururama kwekuyera kunovandudzwawo nehurongwa hwehukuru!
Mibvunzo mikuru ndeiyi:
Zvakafanana here kana voltage yakayerwa iri mamwe mavalues?
Vaverengi vangada kutevedzera chibvumirano chekupindira muchikamu chechipiri, kuratidza kupindirana nenhamba dzakatevedzana, kuisa kupindirana pamagetsi akayerwa, uye vozoverenga mhedzisiro yekuyera kwepoinzi yega yega zvichienderana nemutemo wekutakura weAD converter, uye vozoverenga avhareji yemutengo wekusimbisa, chero bedzi kupindirana kweamplitude kuchigona kukonzera kuti kuverenga mushure meAD quantization kuchinje, uye frequency yesampuro yakakwira zvakakwana (kuchinja kweamplitude yekupindira kune maitiro ekuchinja, pane maviri mavalue akanaka neasina kunaka), uye kururama kunofanirwa kuvandudzwa!
Zvinogona kuratidzwa kuti chero bedzi voltage yakayerwa isiri nhamba yakakwana (haisipo munyika yekutarisa), pachava nekukanganisa kweAD quantization, zvisinei nekuti kukanganisa kweAD quantization kwakakura sei, chero bedzi amplitude yekupindira yakakura kupfuura kukanganisa kweAD quantization kana kupfuura resolution shoma yeAD, zvichaita kuti mhedzisiro yekuyera ichinje pakati pemakoshero maviri ari pedyo. Sezvo kupindira kuri positive ne negative symmetric, hukuru uye mukana wekuderera nekuwedzera zvakaenzana. Naizvozvo, kana kukosha chaiko kuri pedyo neukoshi hupi, mukana wekuti kukosha kupi kuchaonekwa wakakura, uye uchava pedyo neukoshi hupi mushure meavhareji.
Kureva kuti: avhareji yehuwandu hwezviyero zvakawanda (kukanganisa avhareji izero) inofanira kunge iri pedyo nemhedzisiro yekuyera pasina kukanganiswa, kureva kuti, kushandisa chiratidzo chekupindira cheAC chine avhareji yezero uye avhareji yehuwandu hwezviyero zvinogona kuderedza zvikanganiso zvakafanana zveAD Quantize, kuvandudza resolution yekuyera kweAD, uye kuvandudza kururama kwekuyera!
Nguva yekutumira: Chikunguru-13-2023
