SAS(Serial Attached SCSI) ndi m'badwo watsopano waukadaulo wa SCSI.Ndizofanana ndi ma hard disks otchuka a seri ATA (SATA).Imagwiritsa ntchito ukadaulo wa seri kuti ikwaniritse kuthamanga kwambiri ndikuwongolera malo amkati mwa kufupikitsa chingwe cholumikizira.Kwa waya opanda kanthu, pakali pano makamaka kuchokera ku ntchito yamagetsi kusiyanitsa, kugawidwa mu 6G ndi 12G, SAS4.0 24G, koma ndondomeko yaikulu yopanga ndi yofanana, lero tikubwera kugawana, Mini SAS opanda waya oyamba ndi magawo olamulira ndondomeko. .Kwa SAS high frequency line, impedance, attenuation, loop loss, crosswish ndi zizindikiro zina zopatsirana ndizofunikira kwambiri, ndipo ma frequency a SAS high frequency amagwira ntchito nthawi zambiri amakhala 2.5GHz kapena kupitilira apo, tiyeni tiwone momwe tingapangire mzere wothamanga kwambiri wa SAS.
Tanthauzo la mawonekedwe a chingwe cha SAS
Kutayika kochepa pazingwe zoyankhulirana pafupipafupi nthawi zambiri kumakhala kopangidwa ndi thovu la polyethylene kapena thovu la polypropylene ngati zida zotchingira, ma conductor awiri otsekeredwa okhala ndi waya pansi (msikawu ulinso ndi wopanga AMAGWIRITSA NTCHITO njira ziwiri) mumayendedwe oyendetsa ndege, kunja kwa kondakitala wa insulated ndi pansi. waya wokhotakhota ndi aluminium zojambulazo ndi lamination poliyesitala lamba, kutchinjiriza ndondomeko kamangidwe ndi kulamulira ndondomeko, kapangidwe ndi ntchito magetsi zofunika kufala mkulu-liwiro ndi kutengerapo chiphunzitso.
Zofunikira kwa ma conductor
Kwa SAS, yomwe ilinso mzere wothamanga kwambiri, kufanana kwapangidwe kwa gawo lililonse ndilofunika kwambiri kuti mudziwe mafupipafupi a chingwe.Choncho, monga kondakitala mkulu pafupipafupi kufala mzere, pamwamba ndi yozungulira ndi yosalala, ndi mkati latisi dongosolo dongosolo ndi yunifolomu ndi khola, kuonetsetsa yunifolomu ntchito magetsi mu njira kutalika;Kondakitala ayeneranso kukhala ndi kukana kwa DC kochepa;Nthawi yomweyo sayenera kupewedwa chifukwa cha waya, zida, kapena chipangizo china chamkati chopindika nthawi ndi nthawi kapena kupindika pang'onopang'ono, kupindika ndi kuwonongeka, etc., mu mizere yotumizira pafupipafupi, kukana kwa conductor kumachitika chifukwa chochepetsa chingwe (magawo apamwamba kwambiri pepala 01 - attenuation) pazifukwa zazikulu, pali njira ziwiri zochepetsera kukana kwa conductor: kumawonjezera m'mimba mwake wa conductor, sankhani zinthu za conductor ndi kutsika kochepa.Pamene awiri kondakitala chiwonjezeke, kuti akwaniritse zofunikira za khalidwe impedance, m'mimba mwake akunja kutchinjiriza ndi yomalizidwa mankhwala ayenera ziwonjezeke moyenerera, kuchititsa kuwonjezeka mtengo ndi zovuta processing.Ambiri ntchito otsika resistivity wa zipangizo conductive kwa siliva, mwa chiphunzitso, AMAGWIRITSA NTCHITO kondakitala siliva, yomalizidwa mankhwala awiri kuchepetsa, adzakhala ndi ntchito yaikulu, koma chifukwa mtengo wa siliva ndi apamwamba kuposa mtengo wamkuwa, mtengo wokwera kwambiri, sangathe kupanga, kuti athe kuganizira mtengo ndi kutsika kwa resistivity, tinagwiritsa ntchito khungu, kupanga chowongolera chingwe, Pakalipano, SAS 6G imagwiritsa ntchito makina amkuwa amkuwa kuti agwirizane ndi magetsi, pamene SAS 12G ndipo 24G imayamba kugwiritsa ntchito kondakitala wopangidwa ndi siliva.
Pakakhala malo osinthira apano kapena osinthira ma elekitiroma mu kondakitala, chodabwitsa cha kugawa kosafanana kwapano chidzachitika mu kondakitala.Pamene mtunda kuchokera pamwamba pa kondakita ukuwonjezeka, kachulukidwe panopa mu kondakitala amachepetsa exponentially, ndiko kuti, panopa mu kondakitala amaika patsogolo pa kondakitala.Kuchokera pamawonedwe a gawo la mtanda perpendicular kupita kumayendedwe apano, mphamvu yomwe ili pakatikati pa kondakitala ndi zero, ndiye kuti, palibe kuyenderera kwapano, kokha gawo la kondakitala lidzakhala ndi sub. -kuyenda.M'mawu osavuta, pompopompo imakhazikika mu gawo la "khungu" la kondakitala, chifukwa chake imatchedwa khungu ndipo zotsatira zake zimayamba chifukwa cha kusintha kwa maginito amagetsi kumapanga gawo lamagetsi la vortex mkati mwa kondakitala, lomwe limalepheretsa mphamvu yamagetsi yoyambira. .Khungu zotsatira zimapangitsa kukana kondakitala ukuwonjezeka ndi pafupipafupi alternating kuwonjezeka panopa, ndipo kumabweretsa kuchepa mphamvu panopa wa kufala waya, ntchito zitsulo chuma, koma mapangidwe mkulu pafupipafupi kulankhulana chingwe, koma akhoza kugwiritsa ntchito mwayi umenewu. mfundo, ndi njira plating siliva pamwamba kuti akwaniritse zofunika ntchito chimodzimodzi pansi pa maziko a kuchepetsa kuwononga zitsulo, motero kuchepetsa mtengo.
Zofunikira za insulation
Insulation medium iyenera kukhala yofanana, yomwe ili yofanana ndi ya conductor.Kuti mupeze chocheperako chocheperako cha dielectric S ndi tangent ya Dielectric loss Angle, zingwe za SAS nthawi zambiri zimatsekeredwa ndi PP kapena FEP, ndipo zingwe zina za SAS zimayikidwanso ndi thovu.Digiri ya thovu ikakhala yoposa 45%, kutulutsa thovu kwamankhwala kumakhala kovuta, ndipo digiri ya thovu sikhazikika, kotero chingwe chopitilira 12G chiyenera kutengera thovu lakuthupi.
Ntchito yayikulu ya endodermis yokhala ndi thovu ndikuwonjezera kulumikizana pakati pa conductor ndi kutchinjiriza.Kulumikizana kwina kuyenera kutsimikiziridwa pakati pa wosanjikiza wotsekera ndi woyendetsa;mwinamwake, kusiyana kwa mpweya kupangidwa pakati pa wosanjikiza insulating ndi kondakitala, kuchititsa kusintha kwa dielectric zonse £ ndi tangent mtengo wa dielectric imfa Angle.
Polyethylene kutchinjiriza zakuthupi ndi extruded kwa mphuno kudzera wononga, ndipo mwadzidzidzi poyera kupanikizika mumlengalenga pa kutuluka kwa mphuno, kupanga mabowo ndi kulumikiza thovu.Chotsatira chake, mpweya umatulutsidwa mumpata pakati pa kondakitala ndi kutsegula kufa, kupanga dzenje lalitali la kuwira pamwamba pa kondakitala.Kuti muthane ndi mavuto awiri omwe ali pamwambapa, ndikofunikira kutulutsa chithovu nthawi yomweyo ... Khungu lopyapyala limakanikizidwa mkati kuti mpweya usatuluke pamwamba pa kondakitala, ndipo wosanjikiza wamkati amatha kusindikiza thovu. kuonetsetsa kukhazikika kofananira kwa sing'anga yopatsirana, kuti muchepetse kuchepetsedwa ndi kuchedwa kwa chingwe, ndikuwonetsetsa kuti chingwe chonsecho chimakhala chokhazikika.Pakusankhidwa kwa endodermis, kuyenera kukwaniritsa zofunikira zowonda-khoma laling'ono pansi pamikhalidwe yopangira liwilo, ndiye kuti, zinthuzo ziyenera kukhala ndi zinthu zabwino kwambiri zamakokedwe.LLDPE ndiye chisankho chabwino kwambiri kuti mukwaniritse izi.
Zida zofunika
Waya wosakanizidwa ndiye maziko opangira chingwe, ndipo mtundu wa waya wapakati uli ndi chikoka chofunikira kwambiri panjira yotsatila.Potengera waya pachimake, zida zopangira zimayenera kukhala ndi kuyang'anira ndi kuwongolera pa intaneti kuti zitsimikizire kufanana ndi kukhazikika kwa waya pachimake, ndikuwongolera magawo, kuphatikiza ma waya pachimake, capacitance m'madzi, concentricity, etc.
Musanasiyanitse mawaya, m'pofunika kutentha lamba wodzimatira wa poliyesitala kuti asungunuke ndi kumangiriza zomatira zotentha zosungunuka pa lamba wodzimatira wa poliyesitala.Gawo lotentha losungunuka limatenga chotenthetsera chotenthetsera chamagetsi chamagetsi, chomwe chimatha kusintha kutentha koyenera malinga ndi zosowa zenizeni.Pali njira zoyimirira komanso zopingasa za preheater wamba.Chotenthetsera choyimirira chimatha kupulumutsa malo, koma waya wokhotakhota uyenera kudutsa mawilo angapo owongolera okhala ndi ngodya zazikulu kuti alowe mu preheater, zomwe ndizosavuta kusintha mawonekedwe a waya wotsekera pachimake ndi lamba wokutira, zomwe zimapangitsa kuchepa kwa waya. ntchito yamagetsi ya mzere wotumizira ma frequency apamwamba.Mosiyana, chopingasa chopingasa preheater ndi mzere womwewo ndi kukulunga mzere awiri, asanalowe preheater, awiri mzerewo amangodutsa mawilo ochepa olamulira ndi udindo wa kugwirizana dziko, kukulunga mzere kuluka sikusintha Angle pamene akudutsa. kudzera mu gudumu yoyendetsera, kuonetsetsa bata la gawo kuluka udindo wa insulating pachimake waya ndi kuzimata lamba.Choyipa chokha cha chotenthetsera chopingasa ndichoti chimatenga malo ochulukirapo ndipo mzere wopangira ndi wautali kuposa makina omangirira okhala ndi chotenthetsera choyimirira.
Nthawi yotumiza: Aug-16-2022