Kev txhim kho txuj ci ntawm kev ntsuas rotary thiab nws cov hauv paus ntsiab lus ntawm multihead weigher

Tus Sau: Smartweigh– Multihead Weighter

ib. Qhov xwm txheej tam sim no ntawm txoj kev txheeb xyuas metrological ntawm cov tshuab sib xyaw ua ke 1.1 Txoj kev txheeb xyuas metrological ib txwm siv rau hauv kev txheeb xyuas metrological ntawm cov khoom siv fibrous xws li cov ntaub ntawv kho kom zoo nkauj, nplej, roj, khoom noj, kev khawb av, thiab lwm yam, lossis thaum tswj cov khoom qab zib online. . Cov feem ntau yog: cov nplai siv hluav taws xob, cov ntsuas dej ntws ntawm cov phaj, cov nplai antimatter, thiab cov nplai pub mov puag ncig. Txoj kev txheeb xyuas kev ntsuas no muaj nws tus yam ntxwv, tab sis cov kev txwv loj heev.

Cov txheej txheem ua tiav ntawm lub tshuab hluav taws xob tau qhia meej, thiab cov kauj ruam yog raws li nram no: Lub tshuab hluav taws xob sib xyaw ua ke cov ntaub ntawv thauj khoom thiab qhov hloov pauv (qhov sib piv ntawm kev sib kis ceev) cov ntaub ntawv teeb liab ntawm tag nrho thaj chaw ntawm lub tuam txhab (qhov hnyav) kom tau txais tag nrho cov nqi ntws. Cov hom phiaj manipulable. Kev qhia ntxaws txog cov txheej txheem ua tiav ntawm lub tshuab hluav taws xob nplai Ceeb Toom: Tus nqi ntawm cov khoom siv raw kom raug rub tawm yog hloov pauv raws li qhov sib piv ceev ntawm txoj siv sia rub-thiab-rub. Qhov loj me, qhov thauj khoom ntawm txoj siv sia tsav yog txhua yam ruaj khov. Piv nrog rau lwm txoj kev pub mis, txoj kev no muaj qhov cuam tshuam zoo ntawm kev txheeb xyuas metrological thiab linearity.

Daim duab kos ntawm lub voj voog txheeb xyuas qhov ntsuas ntawm lub tshuab hluav taws xob. Lus Cim: Cov haujlwm pub mis thiab hnyav tau ua tiav ntawm ob txoj siv sib kis. 1.2 Txoj kev txheeb xyuas qhov ntsuas rotary yog siv rau hauv lub tshuab sib tov tas mus li. cov khoom siv, cov khoom sib tov ua vaj tse rotary, bitumen rotary mixer. Raws li qhov tseeb ntawm kev txheeb xyuas metrological, ntawm theem no, hom khoom siv no tsis tuaj yeem siv dav dav nrog intermittent. Yog li ntawd, txoj kev sib tov rotary tsis nyiam los ntawm ntau tus neeg siv khoom, uas kuj yog ib qho ntawm cov laj thawj.

Cov kev qhia txog kev tshawb fawb qhia tau tias cov txheej txheem sib tov thiab ua tiav uas tau txiav txim siab los ntawm ob txoj kev ntsuas kev ntsuas no muaj lawv qhov chaw siv tau, thiab kev siv cov khoom sib tov rotary yuav tsum tsis txhob raug kev phom sij los ntawm cov kev txwv ib ntus. Nyob rau theem no, hauv peb lub tebchaws, cov tshuab sib tov rotary raug ntsuas los ntawm txoj kev ntim lossis qhov ntsuas siv hluav taws xob / qhov ntsuas kauv. Xyoo 1970, cov thev naus laus zis sib tov tas mus li tau qhia los ntawm Tebchaws Europe los tsim thiab tsim. Txog tam sim no, nws tau zoo li no, thiab tsis muaj kev txhim kho txij thaum pib mus txog thaum xaus. Qhov tseeb, ob txoj kev ntsuas kev ntsuas no tuaj yeem ua tiav qhov tseeb siab hauv cov ntawv thov European. Piv txwv li, Schenck's transmission belt batching scale hauv Fabkis muaj qhov tseeb ntawm 2%.

Tab sis hauv kuv lub teb chaws, nws tsis zoo, vim nws nyob ntawm kev txwv ntawm kev tsim khoom lag luam yooj yim xws li kev tsim khoom siv tshuab thiab khoom siv thiab cov khoom siv raw hauv kuv lub teb chaws. Nyob rau theem no, qhov ntsuas thiab kev txheeb xyuas qhov tseeb ntawm cov nplai siv hluav taws xob siv hauv txoj kev hauv kuv lub teb chaws feem ntau tsuas yog li 5%, uas tsis txawv ntawm kev txheeb xyuas qhov muaj peev xwm, thiab kev ntseeg siab mus sij hawm ntev tsis muaj zog. ob. Kev Hloov Kho Qhov Hnyav Txuas Ntxiv Mus—— Lub tshuab ntsuas ntau lub taub hau (Lus Askiv Poob-hauv-qhov hnyav) ntawm qhov sib txawv ntawm cov tshuaj txo qis (lub xeev tsis muaj qhov hnyav) tau siv thawj zaug hauv tag nrho cov txheej txheem ntawm kev tsim khoom lag luam hauv xyoo 1990 rau kev txheeb xyuas metrological txuas ntxiv mus.

Lub tshuab ntsuas ntau lub taub hau maj mam hloov cov nplai siv hluav taws xob, cov nplai kauv, thiab txawm tias cov nplai sib sau ua ke. Raws li txoj kev ntsuas tshiab thiab hloov kho tshiab, nws maj mam siv rau ntau yam khoom siv raw. 2.1 Lub tswv yim tseem ceeb: Siv lub thoob ntsuas thiab lub koom haum pub mis ua lub cev ntsuas tag nrho, txuas ntxiv kuaj cov ntaub ntawv qhov hnyav ntawm lub cev ntsuas raws li lub vaj huam sib luag lossis software ntawm lub khoos phis tawj sab saud, thiab ntsuas qhov hloov pauv ntawm qhov hnyav hauv lub sijhawm ua qhov ceev tam sim ntawd Tag nrho cov dej ntws, thiab tom qab ntawd daws teeb meem raws li cov thev naus laus zis lim dej ntawm ntau yam khoom siv kho vajtse thiab software, tuaj yeem siv ua lub hom phiaj tswj hwm. "kev ntws tag nrho tshwj xeeb". Kev tau txais cov dej ntws tag nrho no yog qhov tseem ceeb heev thiab yog lub hauv paus rau kev ntsuas thiab kev txheeb xyuas qhov tseeb ntawm lub tshuab ntsuas ntau lub taub hau.

Ib txoj kev classic tau piav qhia meej hauv daim duab: txoj kev ntsuas qhov hnyav ntawm ntau lub taub hau, thiab tom qab ntawd FC pub rov qab cov txheej txheem optimization raws li PID lub tswv yim, ua qhov kev suav ua haujlwm ntawm tag nrho cov dej ntws ze rau lub hom phiaj tag nrho, thiab tso tawm cov ntaub ntawv kho kom raug los ua haujlwm lub soft starter thiab lwm yam vibrating feeders. vaj huam sib luag tswj. 2.2 Daim ntawv thov tshwj xeeb ntawm lub teeb liab sib txawv multihead weigher: Los ntawm lub hauv paus ntsiab lus, nws tuaj yeem pom tias nws yuav tsis raug mob los ntawm kev hloov pauv khoom siv kho tshuab ntawm lub cev nplai thiab cov qauv pub mis. Nws tsuas yog ntsuas qhov yuam kev qhov hnyav tag nrho (qhov hnyav sib txawv), thiab Piv nrog rau txoj kev txheeb xyuas dynamic metrological ib txwm muaj, nws cov txiaj ntsig yog qhov pom tseeb. Thaum lub hom phiaj tswj yog tag nrho cov dej ntws (t / h, kg / min), thiab cov khoom siv raw muaj kev thauj mus los zoo, thiab qhov tseeb ntawm kev txheeb xyuas metrological yog qhov yuav tsum tau siab, txoj kev tsis muaj qhov hnyav tuaj yeem siv ua txoj kev npaj zoo tshaj plaws rau kev txheeb xyuas metrological.

2.2.2 Cov txheej txheem tsim khoom ntawm ntau lub taub hau hnyav: Cov txheej txheem tsim khoom ntawm ntau lub taub hau hnyav 2.2.3 Cov teeb meem uas yuav tsum tau them sai sai rau hauv cov qauv tsim ntawm ntau lub taub hau hnyav, cov yam ntxwv uas cuam tshuam rau qhov tseeb: ntau lub taub hau hnyav muaj cov yam ntxwv ntawm cov ntaub ntawv zoo li qub thiab cov nplai dynamic. Yog li ntawd, hauv cov qauv tsim System software, teev tseg: 1. Qhov ntau thiab tsawg ntawm kev thauj mus los tsim nyog feem ntau yog 60% txog 70% ntawm lub peev xwm thauj khoom ntsuas hauv kev ua haujlwm tshwj xeeb. Yog tias kev sib txuas lus thiab kev hloov pauv ceev siv, nws yog qhov zoo tshaj plaws los teb rau qhov zaus ntawm kev ntxhov siab ntawm 35-40Hz. Qhov no ua kom muaj ntau yam kev hloov kho.

Nws kuj yog vim qhov tsis zoo ntawm lub kaw lus software thaum tus nqi thauj khoom qis dhau. 2. Qhov ntsuas ntawm lub sensor yog qhov nruab nrab. Hauv lwm lo lus, lub sensor kuj siv 60% ~ 70% ntawm nws qhov ntsuas raws li cov mis. Lub teeb liab cov ntaub ntawv muaj ntau yam kev hloov pauv, uas yog qhov zoo heev rau kev txhim kho qhov tseeb. 3. Lub tswv yim tsim qauv tshuab yuav tsum xyuas kom meej tias cov khoom siv raw muaj kev ncig zoo, thiab tseem xyuas kom meej tias lub sijhawm pub mis luv luv, thiab kev pub mis yuav tsum tsis txhob ntau dhau. Feem ntau, nws tau teev tseg tias kev pub mis yuav tsum tau ua txhua 5-10 feeb.

Lub cuab yeej xa xov ntawm cov chaw txhawb nqa yuav tsum ua kom ruaj khov thiab zoo li kab. 2.2.4 Daim ntawv thov kev cia siab: Nrog rau kev txhim kho sai ntawm cov khoom siv hluav taws xob tswj hwm, lub tshuab ntsuas ntau lub taub hau yog raws li kev xaiv cov thev naus laus zis tshiab, thiab qhov tseeb ntawm kev txheeb xyuas metrological tau nce ntxiv los ntawm 0.3% mus rau 0.5%. Tus yuam sij rau cov thev naus laus zis tshiab no yog kev siv cov ntsuas qhov hnyav digital.

2.2.4.1 Kev siv lub ntsuas qhov hnyav digital: Yuav kom sib koom ua ke zoo dua rau qhov tsim nyog ntawm kev ntsuas dynamic thiab raug, nws yog qhov tseem ceeb heev uas yuav tsum siv ua lub ntsuas software hauv cov khoom siv ntsuas. Tshwj xeeb tshaj yog nyob rau hauv qhov chaw uas lub kaw lus yuav tsum ntse, cov ntaub ntawv tam sim ntawd lossis tsis ncaj qha ntawm lub sensor yog qhov tseem ceeb. Lub sijhawm no, qhov tsis paub meej ntawm kev ntsuas qhov tseeb thiab qhov ntsuas qhov tseeb feem ntau yog ob qho sib txawv, thiab nws nyuaj rau coj mus rau hauv tus account ob qho. Qhov xwm txheej tshwj xeeb raug xaiv ua kev sib haum xeeb. Hauv kev lag luam ntsuas qhov hnyav, ntau lub ntsuas digital analog ib txwm muaj thiab siv hauv kuv lub tebchaws ntawm theem no, thiab cov zis ntawm lub teeb liab pulse yog me me.

Piv txwv li, siv lub ntsuas qhov hnyav uas muaj tag nrho cov zis loj thiab lub hauv paus ntsiab lus ntawm lub zog resistor ua piv txwv, qhov tso zis loj yog 30-40mV. Yog li ntawd, cov teeb liab cov ntaub ntawv yooj yim cuam tshuam los ntawm lub xov tooj cua zaus, thiab qhov deb ntawm lub cable kuj luv, feem ntau tsis pub dhau kaum meters. Hauv cov khoom siv hnyav hauv lub thawv (silo scale batching scale), cov khoom siv hnyav platform lossis lub choj nplai (electronic truck scale lossis rail scale) siv ntau lub sensors hauv series, cov software system ntaub ntawv tuaj yeem siv los ua kom tiav "self-calibration".

Qhov no yog vim muaj ntau lub channel digital sensor system software, tsis muaj teeb meem sib phim. Tus neeg siv khoom nkag mus rau qhov chaw nyob ntxaws ntxaws, qhov hnyav thiab qhov rhiab heev ntawm txhua lub sensor, thiab qhov nplai tuaj yeem ua tiav tag nrho. "plaub lub ces kaum" lossis "ntug" Sib npaug, tsis tas yuav kho cov ntawv dua thiab dua. Hauv qhov kev sim ua haujlwm, tom qab ntau lub sensors tau txuas ua ke, cov yam ntxwv ntawm txhua lub sensor tsis tuaj yeem sib txawv ntawm lwm tus. Thaum calibrating, qhov hnyav txheem yuav tsum tau tso tawm ntawm txhua lub sensor thiab lub zog faib hluav taws xob hauv lub davhlau ya nyob twg yuav tsum tau siv. Ua qhov kev hloov kho.

Vim tias muaj kev sib tw t-test thaum kho, nws rov ua dua ntau zaus. Hauv cov ntaub ntawv system software, txhua tus sensor raug tso cai kuaj xyuas ib tus zuj zus. Yog li ntawd, lub sijhawm los kho tag nrho tus nqi ntawm lub system software nrog digital sensor tsuas yog 1/4 ntawm qhov kev sim ua haujlwm.

Yuav ua tau siv cov software system data "self-diagnosed", uas yog, qhov kev kuaj mob ntawm qhov program flow yuav xyuas seb cov data signal ntawm txhua lub sensor puas raug kaw, seb cov output puas raug tshaj dhau, thiab lwm yam. Yog tias muaj teeb meem, cov lus lossis lub tswb yuav tshwm sim rau ntawm lub dashboard lossis lub control panel, thiab cov neeg siv khoom siv tau cov yuam sij ntawm lub control panel los nrhiav txhua lub sensor, txheeb xyuas qhov ua rau muaj teeb meem ib tus zuj zus thiab ua cov troubleshooting. Hom kev kuaj mob thiab kev tshem tawm qhov yuam kev no yog qhov zoo rau cov neeg siv khoom, thiab nws nyuaj rau hnov ​​qab thiab txo cov nqi hauv kev simulation ntawm analog sensor system software.

Hauv kev lag luam hnyav, qhov kev daws teeb meem ntawm qhov hloov pauv coefficient SPWM ntawm cov software simulation sensor system yog 16 bits, thiab muaj 50,000 suav muaj; thaum qhov kev daws teeb meem ntawm txhua lub sensor hauv cov software system data yog 20 Bit, muaj 1,000,000 suav muaj. Yog li ntawd, ib qho software system nrog 4 lub sensors digital tuaj yeem tsim qhov kev daws teeb meem ntawm 4,000,000 suav. Qhov zoo ntawm hom pixel siab no yog qhov tshwj xeeb tshaj yog rau cov chaw uas qhov hnyav ntawm lub thav duab loj heev thiab qhov hnyav ntawm cov khoom hnyav me me.

Piv txwv li: hauv cov khoom siv ntsuas qhov hnyav ntawm cov khoom noj, qee zaum qee hom khoom siv raw hauv daim ntawv qhia zais cia tsuas yog suav rau ib feem me me xwb, tab sis qhov yuav tsum tau ua kom raug tseem siab heev. Qhov no kuj nyuaj rau ua tiav hauv kev simulation ib txwm muaj. peb. Daim ntawv thov ntawm lub tshuab sib tov rotary thiab qhov cuam tshuam ntawm kev cia siab ntawm kev ua lag luam Vim tias kev ntsuas thiab kev txheeb xyuas ntawm lub tshuab sib tov rotary hauv Suav teb tseem nyob hauv txoj kev ib txwm muaj, daim ntawv thov kev cia siab ntawm kev lag luam thiab kev txhawb nqa ntawm ntau lub taub hau weigher yuav dav heev. , Cov txheej txheem sib tov tas mus li ntawm bitumen muaj kev hloov pauv hloov pauv, thiab kev tswj hwm qhov tseeb ntawm tag nrho cov dej ntws tuaj yeem tsim cov khoom sib tov zoo heev.

Vim tias lub tshuab sib tov khoom muaj cov qauv yooj yim thiab cov nqi kho qis, thaum qhov sib piv ntawm cov khoom sib xyaw raug tswj hwm nruj me ntsis, nws yuav hloov qhov xwm txheej tam sim no ntawm cov khoom lag luam qis ntawm lub tshuab sib tov khoom. Tshwj xeeb, cov tshuab thiab cov khoom siv uas ua rau muaj kev tsim khoom ntau ntxiv hauv kev tsim kho txoj kev thiab dej muaj qhov tseem ceeb zoo, thiab lub tshuab ntsuas ntau lub taub hau yog qhov kev txhim kho tseem ceeb los txhim kho qhov tseeb ntawm kev txheeb xyuas metrological.

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