I-out-of-step kufanele kube i-pulse egejiwe ayihambi endaweni ecacisiwe. Ukudubula okungaphezulu kufanele kube okuphambene nokuphuma kwesinyathelo, kudlulele ngale kwendawo eshiwo.
Izinjini ze-stepperzivame ukusetshenziswa ezinhlelweni zokulawula ukunyakaza lapho ukulawula kulula noma lapho kudingeka khona izindleko eziphansi. Inzuzo enkulu ukuthi isikhundla nesivinini kulawulwa ngendlela evulekile-loop. Kodwa ngenxa yokuthi i-open-loop control, indawo yokulayisha ayinayo impendulo ku-loop yokulawula, futhi i-stepper motor kufanele iphendule ngendlela efanele ekushintsheni kwenjabulo ngayinye. Uma i-excitation frequency ingakhethiwe kahle, i-stepper motor ngeke ikwazi ukuthuthela endaweni entsha. Ukuma kwangempela komthwalo kubonakala kunephutha elingunaphakade uma kuqhathaniswa nendawo elindelwe isilawuli, okungukuthi, into engaphandle kwesinyathelo noma i-overshoot iyacatshangelwa. Ngakho-ke, ohlelweni lokulawula i-open-loop motor stepper, indlela yokuvimbela ukulahlekelwa kwesinyathelo kanye ne-overshoot kuyisihluthulelo sokusebenza okujwayelekile kwesistimu yokulawula i-open-loop.
Izenzakalo ezingaphandle kwesinyathelo nezidlulayo zenzeka laphoi-stepper motoriqala futhi ime, ngokulandelana. Ngokuvamile, umkhawulo wokuvama kokuqala kwesistimu uphansi, kuyilapho isivinini sokusebenza esidingekayo sivame ukuba phezulu. Uma uhlelo luqalwa ngokuqondile ngesivinini esidingekayo sokugijima, ngoba ijubane lidlule umkhawulo, imvamisa yokuqala futhi ayikwazi ukuqaliswa kahle, ukuqala ngesinyathelo esilahlekile, esindayo asikwazi ukuqala nhlobo, okuholela ekujikelezeni okuvinjiwe. Ngemuva kokuthi uhlelo lusebenza, uma iphuzu lokugcina lifinyelelwa ngokushesha yeka ukuthumela ama-pulses, ukuze ime ngokushesha, khona-ke ngenxa ye-inertia yesistimu, i-motor stepper izophendulela isikhundla sebhalansi esifunwa umlawuli.
Ukuze unqobe ukuphuma esinyathelweni kanye nokwenzeka kwe-overshoot, kufanele kwengezwe ekuqaliseni-stop okufanelekile kokulawula ukusheshisa nokunciphisa. Ngokuvamile sisebenzisa: ikhadi lokulawula ukunyakaza leyunithi yokulawula ephezulu, i-PLC enemisebenzi yokulawula yeyunithi yokulawula ephezulu, i-microcontroller yeyunithi yokulawula ephezulu ukulawula ukusheshisa ukunyakaza nokunciphisa inganqoba isenzakalo sokulahleka kwesinyathelo esilahlekile.
Ngokwemibandela ye-layman: lapho umshayeli we-stepper ethola isignali ye-pulse, ishayelai-stepper motorukuvula i-engeli engaguquki (kanye ne-engeli yesinyathelo) ekuqondeni okusethiwe. Ungakwazi ukulawula inani lama-pulses ukulawula inani lokuhamba kwe-angular, ukuze ufeze inhloso yokubeka okunembile; ngesikhathi esifanayo, ungakwazi ukulawula imvamisa ye-pulse ukulawula ijubane nokusheshisa kokujikeleza kwemoto, ukuze ufeze inhloso yokulawulwa kwesivinini. I-Stepper motor inepharamitha yobuchwepheshe: imvamisa yokuqalisa i-no-load, okungukuthi, i-stepper motor esimweni se-no-load pulse frequency ingaqala ngokujwayelekile. Uma i-pulse frequency iphakeme kune-no-load start frequency, i-stepper motor ayikwazi ukuqala kahle, ingase yenzeke ukulahlekelwa izinyathelo noma ukuvimbela ukwenzeka. Endabeni yomthwalo, imvamisa yokuqala kufanele ibe ngaphansi. Uma i-motor izojikeleza ngesivinini esikhulu, imvamisa ye-pulse kufanele ibe nenqubo yokusheshisa enengqondo, okungukuthi, imvamisa yokuqala iphansi bese ikhuphuka ifike kwimvamisa ephezulu oyifunayo ngokusheshisa okuthile (ijubane lemoto likhuphuka lisuka eliphansi liye ngesivinini esikhulu).
Ifrikhwensi yokuqala = isivinini sokuqala × zingaki izinyathelo zokuphenduka ngakunye.Isivinini sokuqalisa esingenamthwalo yi-stepper motor ngaphandle kokusheshisa noma ukwehla ngaphandle komthwalo ojikelezayo ngokuqondile. Lapho i-stepper motor ijikeleza, i-inductance yesigaba ngasinye se-motor winding izokwakha amandla kagesi ahlehlayo; uma i-frequency iphezulu, amandla kagesi ahlehlayo aphezulu. Ngaphansi kwesenzo sayo, i-motor ene-frequency (noma isivinini) iyanda futhi isigaba samanje siyancipha, okuholela ekunciphiseni kwe-torque.
Ake sithi: i-torque ephelele yokukhishwa kwe-reducer yi-T1, isivinini sokukhipha i-N1, isilinganiso sokunciphisa singu-5: 1, futhi i-angle yokunyathela ye-stepper motor ngu-A. Khona-ke isivinini semoto sithi: 5 * (N1), khona-ke i-torque ephumayo ye-motor kufanele ibe (T1) / 5, futhi imvamisa yokusebenza yemoto kufanele ibe
5*(N1)*360/A, ngakho-ke kufanele ubheke ijika lesici se- moment-frequency: iphoyinti lokuxhumanisa [(T1)/5, 5*(N1)*360/A] alikho ngaphansi kwejika lesici lemvamisa (ukuqala kwejika lejika le- moment-frequency). Uma ingaphansi kwejika le- moment-frequency, ungakhetha le motor. Uma ingaphezulu kwejika le- moment-frequency curve, awukwazi ukukhetha le motor ngoba izogeja isinyathelo, noma ingajiki nhlobo.
Ingabe unquma isimo sokusebenza, udinga isivinini esiphezulu esinqunyiwe, uma sinqunywa, khona-ke ungakwazi ukubala ngokuya ngefomula enikeziwe ngenhla, (ngokusekelwe ngesivinini esiphezulu sokujikeleza, nobukhulu bomthwalo, unganquma ukuthi i-stepper motor oyikhethayo manje ifanelekile, uma kungenjalo kufanele futhi wazi ukuthi hlobo luni lwe-stepper motor okufanele uyikhethe).
Ngaphezu kwalokho, i-stepper motor ekuqaleni ngemuva komthwalo ingashintshwa, bese yandisa imvamisa, ngobai-stepper motorumzuzu ijika imvamisa kufanele ngempela kube ezimbili, une ukuthi kufanele kube isiqalo isikhashana ijika imvamisa, kanti enye ivaliwe mzuzu ijika imvamisa, leli jika limelela incazelo: qala motor at imvamisa isiqalo, ngemva kokuphothulwa isiqalo kungandisa umthwalo, kodwa motor ngeke ulahlekelwe isinyathelo isinyathelo; noma Qala i-motor ngemvamisa yokuqala, uma kwenzeka ukulayisha njalo, ungakwazi ukwandisa isivinini sokugijima ngokufanele, kodwa injini ngeke ilahlekelwe yisinyathelo.
Okungenhla ukwethulwa kwe-stepper motor out-of-step kanye ne-overshoot.
Uma ufuna ukuxhumana nokubambisana nathi, sicela ukhululeke ukuxhumana nathi!
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Isikhathi sokuthumela: Apr-03-2023