Unyaka ka-2020 ulethe izehlakalo eziningi okungekho muntu owayengazibona kusengaphambili. Ubhubhane olusha lomqhele luthinte zonke izimboni futhi lwashintsha izimpilo zezigidi zabantu emhlabeni jikelele. Lesi simo esiyingqayizivele siholele ekwenyukeni okukhulu kwesidingo samaski, i-PPE, neminye imikhiqizo engalukiwe. Ukukhula okunamandla kwenze kwaba nzima kubakhiqizi ukuthi bahambisane nesidingo esikhula ngokushesha njengoba befuna ukukhulisa umkhiqizo womshini futhi bathuthukise amakhono anwetshiwe noma amasha avela kumishini ekhona.
Njengoba abakhiqizi abaningi bejaha ukubuyisela imishini yabo, ukuntuleka kwekhwalithi engalukiweizinhlelo zokulawula ukungezwanikuholela emazingeni aphezulu alahliwe, amajika okufunda akhuphukayo nabizayo, kanye nokulahleka kokukhiqiza kanye nenzuzo. Njengoba imaski eminingi yezokwelapha, yokuhlinza, kanye ne-N95, kanye nezinye izinsiza zezokwelapha ezibalulekile kanye ne-PPE, zenziwe ngezinto ezingalukiwe, isidingo semikhiqizo esezingeni eliphakeme kanye nenani eliphakeme sesiphenduke inkundla yezidingo zohlelo lokulawula ukungezwani.
Okungalukiwe yindwangu eyenziwe ngenhlanganisela yezinto zemvelo nezokwenziwa, ezihlanganiswe ndawonye ngobuchwepheshe obuhlukahlukene. Izindwangu ezingalukiwe ezincibilikisiwe, ezisetshenziswa kakhulu ekukhiqizweni kwemaski kanye ne-PPPE, zenziwe ngezinhlayiya ze-resin ezincibilikiswa zibe imicu bese ziphephethwa endaweni ejikelezayo: ngaleyo ndlela kwakheka indwangu enesinyathelo esisodwa. Uma indwangu isidaliwe, idinga ukuhlanganiswa ndawonye. Le nqubo ingenziwa ngenye yezindlela ezine: nge-resin, ukushisa, ukucindezela ngezinkulungwane zezinaliti noma ukuxhumanisa namajethi amanzi anesivinini esikhulu.
Kudingeka izingqimba ezimbili kuya kwezintathu zendwangu engalukiwe ukuze kukhiqizwe imaski. Isendlalelo sangaphakathi senzelwe induduzo, isendlalelo esiphakathi sisetshenziselwa ukuhlunga, futhi isendlalelo sesithathu sisetshenziselwa ukuvikela. Ngaphezu kwalokhu, imaski ngayinye idinga ibhuloho lekhala namacici. Izinto ezintathu ezingezona ezilukiwe zifakwa emshinini ozishintshayo ogoqa indwangu, unqwabelanise izendlalelo phezu komunye nomunye, usike indwangu ibe ubude obufunayo, futhi wengeze amacici nekhala lebhuloho. Ukuze uthole ukuvikelwa okuphezulu, imaski ngayinye kufanele ibe nazo zonke izendlalelo ezintathu, futhi ukusikeka kudinga ukunemba. Ukuze kuzuzwe lokhu kunemba, Iwebhu idinga ukugcina ukungezwani okufanele kuwo wonke umugqa wokukhiqiza.
Lapho imboni ekhiqizayo ikhiqiza izigidi zamaski kanye ne-PPE ngosuku olulodwa, ukulawula ukungezwani kubaluleke kakhulu. Ikhwalithi nokungaguquguquki kuyimiphumela efunwa yisikhungo sokukhiqiza ngaso sonke isikhathi. Isistimu yokulawula ukushuba kwe-Montalvo ingakhuphula izinga lomkhiqizo wokugcina womkhiqizi, ikhuphule umkhiqizo kanye nokuvumelana komkhiqizo kuyilapho ixazulula noma yiziphi izinkinga ezihlobene nokulawula ukushuba kwesimo abangase bahlangabezane nazo.
Kungani kubalulekile ukulawula ukungezwani? Ukulawula ukucindezeleka kuyinqubo yokugcina inani elinqunywe kusengaphambili noma elimisiwe lengcindezi noma ubunzima kwinto ethile phakathi kwamaphoyinti amabili kuyilapho kugcinwa ukufana nokuvumelana ngaphandle kokulahlekelwa yikhwalithi yezinto ezibonakalayo noma izici ezifiswayo. Ngaphezu kwalokho, lapho amanethiwekhi amabili noma ngaphezulu ehlanganiswa, inethiwekhi ngayinye ingaba nezici ezihlukile kanye nezidingo zokushuba. Ukuqinisekisa inqubo yekhwalithi ephezulu yokucwenga engenasici, iwebhu ngayinye kufanele ibe nesistimu yayo yokulawula ukushuba ukuze kugcinwe umphumela omkhulu womkhiqizo wokugcina wekhwalithi ephezulu.
Ukuze uthole ukulawulwa kwe-tension okunembile, isistimu ye-loop evaliwe noma evulekile ibalulekile. Amasistimu avala iluphu alinganisa, aqaphe futhi alawule inqubo ngempendulo ukuze kuqhathaniswe ukungezwani kwangempela nokushuba okulindelekile. Ngokwenza kanjalo, lokhu kunciphisa kakhulu amaphutha futhi kubangele okukhiphayo noma impendulo oyifunayo. Kunezici ezintathu eziyinhloko kusistimu ye-loop evaliwe yokulawula ukungezwani: idivayisi yokulinganisa ukushuba, isilawuli kanye nedivayisi ye-torque (ibhuleki, i-clutch noma idrayivu)
Singahlinzeka ngezilawuli eziningi zokungezwani kusuka kuzilawuli ze-PLC kuya kumayunithi okulawula azinikezele ngamanye. Isilawuli sithola impendulo yokulinganisa okuqondile okuvela kuseli lomthwalo noma engalweni yomdansi. Uma ukushuba kwesimo kushintsha, kukhiqiza isignali kagesi isilawuli esiyihumusha ngokuhlobene nokushuba okumisiwe. Isilawuli sibe sesilungisa i-torque yedivayisi yokukhipha i-torque (i-tension brake, i-clutch noma i-actuator) ukuze kugcinwe iphoyinti lokusetha olifunayo. Ngaphezu kwalokho, njengoba i-rolling mass ishintsha, i-torque edingekayo idinga ukulungiswa futhi iphathwe isilawuli. Lokhu kuqinisekisa ukuthi ukushuba kuyahambisana, kuyahambisana futhi kunembile kuyo yonke inqubo. Senza amasistimu amaseli omthwalo ahamba phambili embonini anezilungiselelo eziningi zokukhweza kanye nezilinganiso eziningi zokulayisha ezizwelayo ngokwanele ukuze zithole ngisho nezinguquko ezincane ekucindezelekeni, ukunciphisa ukungcola nokukhulisa inani lomkhiqizo wokugcina wekhwalithi ephezulu. Iseli lomthwalo likala amandla okuchezuka okuncane asetshenziswa into njengoba ihamba kumaroli angenzi lutho okubangelwa ukuqina kokuqina noma ukuxega njengoba okubalulekile kudlula kunqubo. Lesi silinganiso senziwa ngendlela yesignali kagesi (imvamisa ama-millivolts) athunyelwa kusilawuli ukuze kulungiswe i-torque ukuze kugcinwe ukushuba kwesimo.
Isikhathi sokuthumela: Dec-22-2023
