Poyezera kukakamiza, mungazindikire kuti zotsatira za muyeso siziwonetsa nthawi yomweyo kusintha kwa kukakamiza kolowetsa kapena zimagwirizana kwathunthu pamene kukakamiza kumabwereranso kumalo ake oyambirira. Mwachitsanzo, mukamagwiritsa ntchito sikelo ya bafa kuti muyeze kulemera, sensa ya sikelo imafuna nthawi kuti mumve bwino ndikukhazikika pakuwerenga kulemera kwanu. Thenthawi yoyankhaSensor imatsogolera ku kusintha kwa data koyambirira. Kachipangizo kamene kamasinthira ku katunduyo ndikumaliza kukonza deta, zowerengera zidzawonetsa zotsatira zokhazikika.Ichi si cholakwika cha sensa koma mawonekedwe anthawi zonse pazida zambiri zoyezera zamagetsi, makamaka pokhudzana ndi kukonza kwanthawi yeniyeni komanso kupindula kosasunthika. Chodabwitsa ichi chikhoza kutchedwa sensor hysteresis.
Kodi hysteresis mu ma sensor amphamvu ndi chiyani?
Sensolahysteresisnthawi zambiri zimawonekera pakakhala kusintha kolowetsa (monga kutentha kapena kuthamanga), ndipo chizindikiro chotuluka sichitsatira nthawi yomweyo kusintha, kapena pamene zolowetsazo zibwerera ku chikhalidwe chake choyambirira, chizindikirocho sichibwereranso ku chikhalidwe chake choyambirira. . Chodabwitsa ichi chimatha kuwoneka pamakhota a sensa, pomwe pali chopindika chowoneka ngati loop pakati pa zolowetsa ndi zotuluka, m'malo mwa mzere wowongoka. Mwachindunji, ngati mutayamba kuonjezera zolowetsa kuchokera pamtengo wina, zotsatira za sensa zidzakulanso moyenerera. Komabe, pamene zolowetsazo ziyamba kuchepa kubwerera kumalo oyambirira, mudzapeza kuti zotulukapo ndizokwera kwambiri kuposa zoyambira zoyambira panthawi yochepetsera, kupanga loop kapenahysteresis kuzungulira. Izi zikuwonetsa kuti panthawi yomwe ikuchulukirachulukira komanso kuchepa, mtengo wolowera womwewo umagwirizana ndi mitundu iwiri yotulutsa, yomwe ndikuwonetsa mwachilengedwe kwa hysteresis.
Chithunzichi chikuwonetsa mgwirizano pakati pa kutulutsa ndi kukakamizidwa kogwiritsidwa ntchito mu sensa yokakamiza panthawi yogwiritsira ntchito mphamvu, yoyimiridwa ngati mawonekedwe a hysteresis curve. Axis yopingasa imayimira kutulutsa kwa sensa, ndipo yoyima imayimira kukakamizidwa kogwiritsidwa ntchito. Mphepete yofiira imayimira njira yomwe kutulutsa kwa sensa kumawonjezeka ndi kuwonjezereka kwapang'onopang'ono, kusonyeza njira yoyankhira kuchokera kutsika mpaka kupanikizika kwambiri. Mphepete mwa buluu imasonyeza kuti pamene kupanikizika kogwiritsidwa ntchito kumayamba kuchepa, kutulutsa kwa sensa kumachepanso, kuchokera ku kuthamanga kwapamwamba kubwerera kutsika, kusonyeza momwe sensa imachitira panthawi yotsitsa. Dera lomwe lili pakati pa ma curve awiri, hysteresis loop, likuwonetsa kusiyana kwa sensa yomwe imatulutsa pamlingo womwewo wa kukakamiza pakukweza ndi kutsitsa, zomwe zimachitika chifukwa cha mawonekedwe akuthupi komanso mawonekedwe amkati azinthu za sensor.
Zifukwa za Pressure Hysteresis
The hysteresis phenomenon mumphamvu masensaimakhudzidwa makamaka ndi zinthu ziwiri zazikulu, zomwe zimagwirizana kwambiri ndi mawonekedwe a thupi ndi makina ogwiritsira ntchito sensa:
- Material zotanuka hysteresis Chilichonse chidzadutsa mulingo wina wa zotanuka mapindikidwe akamakhudzidwa ndi mphamvu zakunja, kuyankha mwachindunji kwazinthu zomwe zimagwiritsidwa ntchito. Mphamvu yakunja ikachotsedwa, zinthuzo zimayesa kubwerera ku chikhalidwe chake choyambirira. Komabe, kuchira kumeneku sikokwanira chifukwa chosafanana mkati mwazinthu zamkati ndi kusintha pang'ono kosasinthika kwa microstructure yamkati panthawi yotsegula ndi kutsitsa mobwerezabwereza. Izi zimabweretsa kuchepa kwa machitidwe amakina panthawi yotsitsa ndikutsitsa mosalekeza, yotchedwazotanuka hysteresis. Chodabwitsa ichi chikuwonekera makamaka pakugwiritsa ntchito kwamphamvu masensa, monga masensa nthawi zambiri amafunikira kuyeza ndikuyankha kupsinjika kwakusintha molondola.
- Kukangana Pazigawo zamakina a sensa yokakamiza, makamaka zomwe zimakhudza magawo osuntha, kukangana sikungapeweke. Kukangana kumeneku kungabwere kuchokera kumagulu omwe ali mkati mwa sensa, monga malo otsetsereka, mayendedwe, ndi zina zotero. Pamene sensa imanyamula kupanikizika, mfundo zotsutsanazi zimatha kulepheretsa kuyenda kwaufulu kwa makina amkati a sensa, kuchititsa kuchedwa pakati pa yankho la sensa ndi kupanikizika kwenikweni. Kupanikizika kumatsitsidwa, mphamvu zotsutsana zomwezo zimathanso kulepheretsa kuti zipangidwe zamkati zisayime nthawi yomweyo, motero zimasonyezanso hysteresis panthawi yotsitsa.
Zinthu ziwirizi palimodzi zimatsogolera ku hysteresis loop yomwe imawonedwa m'masensa poyesa ndikutsitsa mobwerezabwereza, chikhalidwe chomwe chimakhala chodetsa nkhawa kwambiri pazogwiritsa ntchito pomwe kulondola ndi kubwereza kumafunika kwambiri. Kuti muchepetse kukhudzidwa kwa zochitika za hysteresis, kupanga mosamala ndi kusankha zinthu za sensa ndikofunikira, ndipo ma algorithms apulogalamu angafunikirenso kubweza hysteresis iyi pamapulogalamu.
The hysteresis phenomenon mumphamvu masensaimakhudzidwa ndi zinthu zosiyanasiyana zokhudzana ndi thupi ndi mankhwala a sensa ndi malo ake ogwirira ntchito.
Kodi ndi zinthu ziti zomwe zimayambitsa sensa hysteresis?
1. Zinthu zakuthupi
- Elastic modulus: Zotanuka modulus zazinthu zimatsimikizira kuchuluka kwa zotanuka zikakamizidwa. Zida ndi apamwamba zotanuka modulus amapunduka zochepa, ndi awozotanuka hysteresisakhoza kukhala ocheperapo.
- Chiŵerengero cha Poisson: Chiŵerengero cha Poisson chimafotokoza za chiŵerengero cha lateral contraction to longitudinal elongation mu zinthu zikakakamizika, zomwe zimakhudzanso khalidwe lazinthu panthawi yotsitsa ndi kutsitsa.
- Mapangidwe amkati: Microstructure ya zinthuzo, kuphatikizapo mawonekedwe a kristalo, zolakwika, ndi inclusions, zimakhudza machitidwe ake amakina ndi mawonekedwe a hysteresis.
2. Njira yopanga
- Kulondola kwa Machining: Kulondola kwa gawo la sensor sensor kumakhudza mwachindunji magwiridwe ake. Zida zokhala ndi zolondola kwambiri zimakwanira bwino, zimachepetsa kukangana kwina ndi kupsinjika komwe kumachitika chifukwa cha kusakwanira bwino.
- Kuvuta kwapamtunda: Ubwino wa chithandizo chapamtunda, monga kuuma kwa pamwamba, umakhudza kukula kwa mikangano, potero kumapangitsa kuti sensa iyankhe mofulumira ndi hysteresis.
- Kusintha kwa kutentha kumakhudza mawonekedwe a zinthu, monga zotanuka modulus ndi friction coefficient. Kutentha kwambiri kumapangitsa kuti zinthu zikhale zofewa, kumachepetsa zotanuka modulus ndikuwonjezera kukangana, potero kumawonjezera kukomoka. Mosiyana ndi zimenezi, kutentha kochepa kungapangitse zipangizo kukhala zovuta komanso zowonongeka, zomwe zimakhudza hysteresis m'njira zosiyanasiyana.
3. Kutentha
- Kusintha kwa kutentha kumakhudza mawonekedwe a zinthu, monga zotanuka modulus ndi friction coefficient. Kutentha kwambiri kumapangitsa kuti zinthu zikhale zofewa, kumachepetsa zotanuka modulus ndikuwonjezera kukangana, potero kumawonjezera kukomoka. Mosiyana ndi zimenezi, kutentha kochepa kungapangitse zipangizo kukhala zovuta komanso zowonongeka, zomwe zimakhudza hysteresis m'njira zosiyanasiyana.
Zowopsa
Kukhalapo kwa hysteresis mumphamvu masensazingayambitse zolakwika za muyeso, zomwe zimakhudza kulondola ndi kudalirika kwa sensa. M'mapulogalamu omwe amafunikira miyeso yolondola kwambiri, monga kuwongolera njira zamafakitale ndi kuwunika kofunikira kwa zida zamankhwala, hysteresis imatha kubweretsa zolakwika zazikulu komanso kupangitsa kuti makina onse oyezera alephereke. Chifukwa chake, kumvetsetsa ndikuchepetsa kukhudzidwa kwa hysteresis ndi gawo lofunikira pakuwonetsetsa kuti magwiridwe antchito akuyenda bwino komanso olondola.mphamvu masensa.
Njira zothetsera Hysteresis mu Pressure Sensors:
Kuti muwonetsetse zotsatira zotsika kwambiri za hysteresis mumphamvu masensa, opanga atenga njira zingapo zofunika kuti akwaniritse ntchito ya sensa:
- Kusankha kwazinthu: Kusankha kwazinthu kumachita gawo lalikulu mu hysteresis. Chifukwa chake, opanga amasankha mosamala zida zapakati zomwe zimagwiritsidwa ntchito pomanga ma sensor, monga ma diaphragms, zisindikizo, ndi madzi odzaza, kuti awonetsetse kuti akuwonetsa hysteresis yochepa pamikhalidwe yosiyanasiyana yogwirira ntchito.
- Kukhathamiritsa kwa mapangidwe: Pakuwongolera kapangidwe ka masensa, monga mawonekedwe, kukula, ndi makulidwe a ma diaphragms, komanso kukhathamiritsa njira zosindikizira, opanga amatha kuchepetsa kugwedezeka komwe kumachitika chifukwa cha mikangano, mikangano yosasunthika, komanso kupunduka kwa zinthu.
- Chithandizo cha ukalamba: Masensa omwe angopangidwa kumene amatha kuwonetsa hysteresis yayikulu. Kudzeramankhwala okalambandi mapulogalamu enieni oyesera, zipangizo zimatha kufulumizitsidwa kuti zikhazikike ndi kusinthasintha, motero kuchepetsa hysteresis yoyamba iyi. Chithunzi pansipa chikuwonetsaXDB305zikuchitikamankhwala okalamba.
- Kuwongolera mwamphamvu kupanga: Poyang'anira mosamalitsa kulolerana ndi mtundu panthawi yopanga, opanga amawonetsetsa kusasinthika kwa sensa iliyonse ndikuchepetsa kukhudzidwa kwa kusiyanasiyana kwa hysteresis.
- Kuwongolera kwapamwamba ndi kubweza: Opanga ena amagwiritsa ntchito ukadaulo wapamwamba wolipirira ma digito ndi njira zowerengera ma point angapo kuti afanizire ndendende ndikuwongolera ma hysteresis pazotulutsa za sensor.
- Kuyesa kwa magwiridwe antchito: masensa onse amayesedwa mwatsatanetsatane kuti awone mawonekedwe awo a hysteresis. Kutengera zotsatira zoyesa, masensa amasinthidwa kuti awonetsetse kuti zinthu zokha zomwe zimakwaniritsa miyezo ya hysteresis zimatulutsidwa pamsika.
- Mayesero ofulumizitsa moyo: Kuti atsimikizire kukhazikika kwa masensa pa nthawi yonse yomwe amayembekeza, opanga amayesa kukalamba komanso kuyesa moyo pazitsanzo kuti awonetsetse kuti hysteresis imakhalabe m'malire ovomerezeka.
Njira izi zimathandizira opanga kuwongolera bwino ndikuchepetsa zochitika za hysteresis mumphamvu masensa, kuonetsetsa kuti masensawo akukwaniritsa zofunikira kwambiri komanso zodalirika pazochitika zenizeni.
Nthawi yotumiza: May-09-2024