1: qhov nruj tswj ntawm lub paj: thaum lub sij hawm rewinding ntawm ib daim ntawv yob, qhov nro rewinding yuav tsum tau zam kom deb li sai tau kom paub meej tias uniformity ntawm lub compactness sab hauv thiab sab nraum lub tshuab rewinding. Qhov thib ob, thaum lub sij hawm rewinding, yog tias qhov nro tswj ntawm daim ntawv yog tsawg heev, daim ntawv yob yuav xoob los yog xaub rau hauv qab rau cov menyuam yaus, ua rau lub taub hau thiab daim ntawv intertwined. Thaum lub nro tiv thaiv loj dhau lawm, nws yuav ua rau kom muaj qhov pov thawj los yog ua kom puas ntawm daim ntawv tseem ceeb. Vim li no, tus nqi tswj ntawm qhov nro ceev ceev thaum lub sij hawm rewinding ntawm daim ntawv, thiab nws yog ib qho tseem ceeb heev rau nruab ib tug zoo instantaneous inertia compensatory regulator nyob rau hauv lub nro kaw-voj tswj system.
2: lub siab ntawm daim npog qhov ncauj, qhov siab ntawm daim ntawv rau cov menyuam thaum lub sij hawm rov thim rov qab, thiab ntxiv cov ntawv ntawm cov ntawv yob muab los ntawm daim ntawv rau cov menyuam thaum lub sijhawm pib ntawm qhov rov, nrog rau hauv ntej thiab hauv qab ntog, muab lub zog quab yuam rau lub yob. Nrog rau qhov sib npaug ntawm lub coil, qhov chaw ntawm cov tub xovxwm uas muaj zog tuaj yeem maj mam, thiab cov khoom uas tau muab los ntawm daim ntawv rau cov menyuam tuaj yeem txo. Thaum cov kauj voj kab hov ncav ib qho nqi, cov khoom thauj uas tau muab los ntawm daim ntawv quav yog qhov xoom. Nyob rau lub sij hawm no, nws tsuas yog tshwm sim ua ib qho cuab yeej los tuav lub chaw ntawm daim ntawv yob. Lub khoos kas tswj kev tswj ntawm cov ntawv yuav tsum raug xaiv raws li qhov zoo ntawm daim ntawv thiab qhov kawg diameter. Feem ntau, qhov siab ntawm daim ntawv rau cov menyuam kawm ntawv yeej tswj tau raws li tus qauv pib ntawm qhov pib, thiab tus neeg teb xov tooj tsis tas hloov nws.
3: qhov sib txawv ceev ntawm lub hauv ntej thiab sab nraub qaum. Qhov kev sib tw ntawm cov neeg pab txhawb nqa kev sib koom tes ua rau lub zog rov tuaj, qhov loj ntawm lub zog rov los txiav txim siab qhov loj ntawm cov ntaub ntawv compactness, thiab lub hwjchim ntawm lub rewinding rewinding yuav ua rau kom qhov compactness ntawm daim ntawv yob.
