Le khasiukubonwa kwe-vibrationI-HY-3SF idlala indima ebalulekile ekuqapheni kwesimo sezimboni kanye nokuxilongwa kwamaphutha. Ukucutshungulwa kwesiginali okunembile kusixhumanisi esiyinhloko somsebenzi waso osebenzayo, okuthinta ngqo ukwahlulela kwesimo semishini kanye nokubikezelwa kwamaphutha. Le ndatshana izocacisa inqubo yokusebenza yesiginali ye-Hy-3Sf.

Ukutholwa kwesiginali

1. Ukukhishwa kwenzwa

I-HY-3SF kuqala ithola isiginali kusuka kumthombo wokudlidliza, imvamisa ngeinzwa yokusheshisaUkuthola isinali ye-analog yesikhathi se-analog equkethe imininingwane yokudlidliza kwemishini. Isibonelo, ekuqapheleni imishini emikhulu ejikelezayo efana nama-turbines noma ama-generator, ukushesha kwezinzwa kufakwe ezingxenyeni ezibalulekile zemishini, ezinjengezingxenye.

Lezi zinzwa zingaguqula i-vibration emishini ibe amasiginali kagesi, kanye nezimpawu zezimpawu zokuphuma ezinjenge-amplitude kanye nemvamisa zihlobene kakhulu nesimo sokudlidliza semishini. Isibonelo, lapho imishini isebenza ngokujwayelekile, isiginali yokusheshisa ishintshanisa ngaphakathi kwebanga elizinzile; Lapho imishini yehluleka, njengokuhlanza kabi noma ukuthwala ukugqoka, izici zemvamisa kanye nokuvama kwesiginali zizoshintsha kakhulu.

2. I-Sampling Parameter Ukuzimisela

Ku-HY-3SF ye-Digital Tex-3SF, ukuhlela kabusha kahle isikhathi se-wave domain gavelform, inani lesampula kanye nenombolo yamaphoyinti wesampula kumele anqunywe. Ubude besikhathi sokubheka bulingana nesikhathi sesampula siphindaphindeka ngenani lamaphoyinti wesampula. Isibonelo, uma isikhathi sokushintsha kwesiginali yokudlidliza sibhekwe ngesekhondi esingu-1, ngokusho kwe-theorem yesampula (i-nayquist fass Ukucabanga ukuthi imvamisa ephezulu yokudlidliza yemishini iyi-500hz, imvamisa yesampula ingakhethwa ukuba ngaphezulu kwe-1000hz.

Ukukhethwa kwenani lamaphoyinti okusampula kubuye kubucayi. Ukukhetha okujwayelekile kungu-1024, amandla enombolo engu-2, okungeyona elula kuphela yokubala okulandelayo kwe-FFT, kepha futhi inezinzuzo ezithile ekucutshungweni kwedatha.

Isimo sesiginali

1. Ukuhlunga

Isihlungi se-Low-Pass: Sisetshenziselwa ukuqeda umsindo wokuphazamiseka okuthe xaxa. Isibonelo, eduze kwemishini ethile kagesi, kungaba nokuphazanyiswa okuthe xaxa kwe-electromagnete kagesi. Isihlungi esiphansi esiphansi singasusa ngempumelelo lezi zimpawu eziphakeme kakhulu kunezakhiwo esijwayelekile sokudlidliza semishini bese sigcina imvamisa ephansi ephansi ye-Medium-frequency vibration izimpawu zesiginali.

Isihlungi esiphezulu sokudlula: Ungasusa i-DC kanye nomsindo wemvamisa ophansi. Ngesikhathi sokuqalisa noma ukumisa isigaba seminye imishini, kungahle kube nokuvalwa kwamanye amazwe noma amasiginali we-Drift. Isihlungi esiphezulu sokudlula singazihlunga ukuze siqinisekise ukuthi isibonakaliso esibonisa ikakhulukazi ukudlidliza kokusebenza okujwayelekile kwemishini kugcinwa.

Isihlungi se-bandpass Isibonelo, kweminye imishini enengxenye ethile yemvamisa yokujikeleza imvamisa, ngokubeka i-bandpass efanelekile yokuhlunga uhlu lokuhlunga, ukudlidliza okuhlobene nengxenye kungabhekwa ngokunemba.

2. Ukuguqulwa kwesiginali nokuhlanganiswa

Kwezinye izimo, isiginali yokusheshisa idinga ukuguqulwa ibe yi-velocity noma isiginali yokufuduka. Kodwa-ke, kunezingqinamba kule nqubo yokuguqulwa. Lapho i-velocity noma isiginali yokufuduka ikhiqizwa inzwa yokusheshisa, ukuhlanganiswa kwesiginali yokufaka kusetshenziswa kangcono yimibuthano ye-analog ngoba ukuhlanganiswa kwedijithali kukhawulelwe ukwahlulwa okuguquguqukayo kwenqubo ye-A / D yokuguqula. Ngoba kulula ukwethula amanye amaphutha ku-Digital Circtuit, futhi lapho kunokuphazamiseka kumafrikhwensi aphansi, ukuhlanganiswa kwedijithali kuzokhulisa lokhu kuphazamiseka.

I-FFT (esheshayo ye-Fourier Transform) Iyacubungula

1. Izimiso eziyisisekelo

I-HY-3SF isebenzisa ukucubungula i-FFT ukubola isampula yesiginali yomhlaba ehlukahlukene yesikhathi somhlaba ezindaweni zayo ezijwayelekile. Le nqubo ifana nokuwohloka kwesiginali emnandi exutshwe amanothi ngamanye.

Isibonelo, ngesiginali eyinkimbinkimbi yokudlidliza equkethe izingxenye eziningi zemvamisa ngasikhathi sinye, i-FFT ingakubola ngokunembile ukuthola ukuthola i-amplitude, isigaba kanye nemininingwane yemvamisa yengxenye ngayinye yemvamisa.

2. Ukuhlelwa kwepharamitha

Imigqa yokuxazulula: ngokwesibonelo, ungakhetha imigqa ehlukene yokuxazulula okufana ne-100, 200, 400, umugqa ngamunye uzobuyisa i-FMAX, futhi isisombululo saso silingana ne-FMAX (imvamisa ephezulu kakhulu ukuthi ithuluzi elingayithola futhi liboniswe) lihlukaniswe yinombolo yemigqa. Uma i-FMAX ingu-120000CPM, imigqa engama-400, isixazululo singu-300CPM umugqa ngamunye.

Imvamisa kakhulu (i-FMAX): Lapho kunqunywa i-FMAX, amapharamitha anjengezihlungi zokulwa nokuhlaselwa nazo zisethwe. Kuyimvamisa ephezulu kakhulu yokuthi ithuluzi elingalinganisa nokulibonisa. Lapho ukhetha, kufanele kunqunywe ngokususelwa kububanzi obulindelekile bokudlidliza kwemishini.

Uhlobo olujwayelekile nenombolo ephakathi: Ukulinganiselwa kusiza ukunciphisa umthelela womsindo ongahleliwe. Izinhlobo ezihlukile zokulinganisa (ezinjengokusho kwe-arithmetic, kusho i-geometric, njll.) Futhi nezinombolo ezijwayelekile eziphakathi zingathuthukisa ukuqina kwesiginali.

Uhlobo lwewindi: Ukukhetha kohlobo lwewindi kuthinta ukunemba kokuhlaziywa kwe-spectrum. Isibonelo, izinhlobo ezahlukene zemisebenzi yewindows efana ne-Hanning Window ne-Hammning windows zinezinzuzo zazo ezimweni ezihlukile.

Ukuhlaziywa kwedatha okuphelele

1. Ukuhlaziywa kweTrend

Ngokwenza ukuhlaziya kwesikhathi sochungechunge lwesikhathi kwimininingwane yesiginali yokudlidliza, umkhuba wesilinganiso sokudlidliza ngokuphelele. Isibonelo, njengoba imishini isebenza isikhathi eside, ingabe inani eliphelele le-vibration liyanda kancane kancane, linciphe, noma lihlale lizinzile? Lokhu kusiza ekunqumeni impilo yonke yemishini. Uma inani le-amplitude eliphelele liphansi ekuqaleni kokusebenza okujwayelekile kwemishini futhi kancane kancane liyanda ngemuva kwesikhathi, kungakhombisa ukuthi imishini ingahle igqoke noma yehluleka.

2. Ukukhonjwa kwesici esibi

Khomba uhlobo olubi ngokususelwa ekuphakameni nobudlelwano bokuvama kwengxenye ngayinye yemvamisa yesiginali yokudlidliza eyinhlanganisela. Isibonelo, lapho imishini inephutha elingalinganiseli, ukuvela okukhulu kokudlidliza kuvame ukuvela imvamisa yamandla engxenye ejikelezayo (efana nemvamisa ehambelana nezikhathi ezi-1); Futhi lapho kunephutha lokuthwala, kuzovela isibonakaliso esingejwayelekile sokudlidliza esitolo esivame okuhlobene nokuvama kwemvelo kokuthwala.

Ngasikhathi sinye, ngaphansi kwezimo ezifanayo ezisebenzayo, ubudlelwane besigaba besiginali yokudlidliza yengxenye yomshini ohlobene nelinye iphuzu lokulinganisa emshinini bunganikezelwa ukuxilongwa kwamaphutha. Isibonelo, kwizingxenye zemishini yokujikeleza, uma zingaqondani, umehluko wesiginali wabo wezimpawu zabo zokudlidliza uzohluka ngokujwayelekile.

Inqubo yokusebenza yesiginali ye-Vibration Monitor Hy-3SF iyinqubo eyinkimbinkimbi futhi ehlelekile. Ukusuka ekutholweni kwesiginali ku-FFT ukucubungula kanye nokuhlaziywa kwedatha okuphelele, isixhumanisi ngasinye sibalulekile. Ukucutshungulwa kwesiginali okunembile kunganikeza isisekelo esithembekile sokulungiswa kokubikezela kwemishini yezimboni, kusiza ukutholwa amaphutha afihliwe ngesikhathi sokufihla imishini, nokwenza ngcono ukuthembeka kwemishini nokusebenza kahle okusebenzayo. Ngokuqonda okujulile nokusetshenziswa okunengqondo kobuchwepheshe obuhlukile bokucubungula iziginali namapharamitha, i-HY-3SF ingadlala kangcono iqhaza ekuqaphekeni kwesimo semishini yezimboni.

Uma ufuna iziqapha eziphakeme ezisezingeni eliphakeme, ezithembekile zokudlidliza, akungabazeki ukuthi uYoyik ukhetha ukucatshangelwa. Inkampani isebenza ngokukhethekile ekunikezeni imishini ehlukahlukene yamandla kubandakanya izesekeli ze-turbine, futhi ithole isimemezelo esibanzi ngemikhiqizo nezinsizakalo ezisezingeni eliphakeme. Ngeminye imininingwane noma imibuzo, sicela uxhumane nensizakalo yamakhasimende ngezansi:

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