Ukunemba kwesikali samakhanda amaningi kungabeka engcupheni imishini yokukala

Umbhali: Smartweigh– Isisindo Sezinhloko Eziningi

Ukukhetha isikali sekhanda eliningi esisezingeni eliphezulu kuyisilawuli sokukala isinyathelo ngasinye sokuthola ukunemba kwesisindo. Isikali sekhanda eliningi siyithuluzi lomshini elikhiqiza futhi licubungule umthwalo wokugoba wezinto zensimbi. Amandla aguqulwa abe amandla omshini abe isignali kagesi, futhi ukugoba akudluli ngaphezu kokuguquguquka kwezinto zensimbi futhi kulinganiswa ngama-strain gauges aboshwe kumamojula wephuzu. Ukuguquka komkhiqizo wesikali sekhanda eliningi ngokuhamba kwesikhathi, lapho isikali sekhanda eliningi sigcinwa isikhathi eside. Kuhlelo lomjikelezo oluthatha imizuzu emi-2 kuya kwemi-3 oluqhubekayo noma olugcwalisa kabusha, ukuphumula kokucindezeleka akuyona inkinga ebalulekile.

Kodwa uma usebenzisa isikali samakhanda amaningi ukuqapha impahla yokugcina impahla, kufanele futhi ucabangele ingozi yokuphumula kokucindezeleka. Ukushintsha kwezinga lokushisa kuphazamisa umphumela wesenzwa ngokushintsha ukuzwela kwesikali samakhanda amaningi, ngaphandle kokuthi kulinganiswe kabusha kuzo zonke izinguquko ezinkulu zokushisa. Umphumela wokushisa wesikali samakhanda amaningi angu-zero-load uzokwenza ukuthi lonke uhla lokukhipha wesenzwa lushintshe.

Kodwa-ke, uma umthwalo wesisindo samakhanda amaningi ungaphezulu kwe-zero futhi, isikhathi somjikelezo wesisindo ngaphambi nje kokuqala——Uma uyisebenzisa ekunambithekeni, awudingi ukunaka ukulimala kwaleli zinga lokushisa lapho umthwalo ungaphezulu kwe-zero. Isisindo samakhanda amaningi sicabangela ngokugcwele isivinini sokuphendula sesisindo samakhanda amaningi. Isivinini sokuphendula kwenzwa singenye into okumele icatshangelwe kwezinye izinhlelo zokusebenza.

Ukuziphatha komuntu ngamunye kwesikali se-multihead model kufana nokushaqeka okuphuzi okuqinile, bese kuba ukufundwa kwesisindo okuqediwe, isikali se-multihead sibhekana nokumisa ukushaqeka ngesikhathi esifushane ngesikhathi sokulinganisa esifiselekayo. Ngenkathi isivinini sokuphendula sesikali se-multihead ngokuvamile singabalulekile ekusetshenzisweni kwezinongo, imishini yokugcwalisa eshesha kakhulu yokuhlola isisindo noma ejijekile ngokuzenzakalelayo kumele iphendule ngokushesha kusuka kusikali se-multihead. Lapho umthwalo ukhishwa uye ku-inductor, isikali se-multihead sicindezela imvamisa yokunyakazisa yemvelo.

Kodwa-ke, isikali samakhanda amaningi asimelani nokushaqeka okukhishwe ngaphandle, njengezikhali zokulinganisa, ngakho-ke isikali samakhanda amaningi kumele sisavikelwe emithonjeni yokushaqeka. Isikali samakhanda amaningi singenye yezinhlobo ezibalulekile zezinzwa zemishini yomshini, isofthiwe yesicelo ivame kakhulu, kunezindlela eziningi. Ukwakhiwa okuphelele kwesikali samakhanda amaningi sama-urethane elastomers, ama-strain gauges, ama-seal, njll.

Kunezici eziningi zezinzwa zengozi ezihambisanayo, ake ngihlaziye imisebenzi yazo ngezansi. Ama-elastomer e-polyurethane kanye nama-resistance strain gauges amahle kakhulu, inzwa nayo kufanele ivalwe nge-sealant kuphela, isihluthulelo ukulungisa indlela eqondile kanye nokuvala ukuze kugwenywe izici zemvelo ezimfanelweni zenzwa. Kusukela kungqimba olungaphezulu, i-sealant ithambile kakhulu ngemva kokoma, futhi amandla okucindezela e-polyurethane elastomer angashiywa futhi angabalwa.

Izingozi ezinjalo kumele zicatshangelwe ngezindlela eziningi uma zisetshenziswa emkhakheni wokulinganisa amandla kwabakhokhi bentela abancane. Uma kusetshenziswa amandla amancane njengoba ukuguquguquka kwe-polyurethane elastomer kuncane, ukujiya kwe-sealant kuyingozi, okuholela ekuguqukeni. Isisindo samakhanda amaningi segeyiji yokucindezeleka sakhiwe kakhulu ngegridi ezwelayo, ipuleti lensimbi eliyisisekelo kanye nesendlalelo sokumboza esakhiwe nge-lead, njll.

Kusekelwe emsebenzini wamandla okucindezela we-resistor yesango ezwela kakhulu, uhlobo lwe-ductile luguqulwa lube ukumelana nokungqubuzana, uma izinto zokusetshenziswa ngokwazo zingemuva, khona-ke i-strain gauge isangemuva. Umkhiqizi odumile emhlabeni wonke wama-strain gage nama-resistance strain gage ukhiqize isu lokuziphindisela engqondweni ukuze agweme amazinga okubambezeleka ngangokunokwenzeka. Kuyadingeka ukucabangela izici eziningi lapho ukhetha izingxenye ze-multihead weigher.

Uhlelo oluhle lokuklama imodyuli yomthwalo kumele lucabangele imikhiqizo enomphumela we-hysteresis. Ngokusho kokuhlaziywa okungenhla, ukuhlanganisa imininingwane kunganciphisa kakhulu usayizi osele.

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