Hitachi excavator iindawo EX200-2/3/5 isivamvo soxinzelelo sokutshintsha 4436271

Indlela yokusebenza

1) Isiphumo sombane

Ngokomthetho kaFaraday we-electromagnetic induction, ubukhulu be-electromotive force eyenziwe kwi-coil ixhomekeke kwisantya sokutshintsha kwe-magnetic flux edlula kwikhoyili xa i-N-turn coil ihamba kwintsimi yamagnetic kwaye inqumla umgca wamandla kazibuthe. okanye utshintsho lwemagnethi yemagnethi apho ikhoyili ikhona).

Isivamvo semagnetoelectric eshukumayo

Umgca we-magnetoelectric sensor ohambayo uquka umazibuthe osisigxina, ikhoyili kunye nendlu yoluvo.

Xa iqokobhe lingcangcazela kunye nomzimba oshukumayo ukuba ulinganiswe kwaye i-vibration frequency iphezulu kakhulu kune-experience yendalo ye-sensor, kuba intwasahlobo ithambile kwaye ubunzima bendawo eshukumayo bukhulu kakhulu, kusemva kwexesha kakhulu kwinxalenye eshukumayo. ukungcangcazela (ukuma ngxi) ngomzimba ongcangcazelayo. Ngeli xesha, isantya sentshukumo esihambelanayo phakathi kwemagnethi kunye nekhoyili sisondele kwisantya sokungcangcazela sevibrator.

Uhlobo olujikelezayo

Intsimbi ethambileyo, ikhoyili kunye nemagnethi esisigxina zilungisiwe. Isixhobo sokulinganisa esenziwe ngesixhobo sokuhambisa samagnetic sifakwe kumzimba ojikelezayo olinganisiweyo. Ngalo lonke ixesha izinyo lijikeleziswa, ukuxhathisa kwemagnethi yesekethe yemagnethi eyenziwe phakathi kwegiya yokulinganisa kunye nentsimbi ethambileyo itshintsha kube kanye, kwaye imagnethi iyatshintsha kube kanye. I-frequency (inani le-pulses) ye-electromotive force eyenziwe kwikhoyili ilingana nemveliso yenani lamazinyo kwisixhobo sokulinganisa kunye nesantya esijikelezayo.

Isiphumo seholo

Xa i-semiconductor okanye i-foil yensimbi ifakwe kwintsimi yamagnetic, xa i-current (kwi-plane direction ye-foil perpendicular field magnetic) ihamba, i-electromotive force yenziwa kwi-direction perpendicular field magnetic kunye ne-current. Le nto ibizwa ngokuba yi-Hall effect.

Iholo element

Izixhobo zeHolo ezisetyenziswa ngokuqhelekileyo ziyi-germanium (Ge), i-silicon (Si), i-indium antimonide (InSb), i-indium arsenide (InAs) njalo njalo. I-N-uhlobo lwegermanium kulula ukuyenza kwaye inomlinganiso olungileyo weHolo, ukusebenza kobushushu kunye nokuhambelana. I-silicon yohlobo lwe-P inowona mgca ubalaseleyo, kwaye ukusebenza kwayo kweHolo kunye neqondo lobushushu kuyafana nohlobo lwe-N-uhlobo lwe-germanium, kodwa ukuhamba kwayo kwe-electron kuphantsi kwaye umthamo wayo wokulayisha umbi, ngoko ke ayidli ngokusetyenziswa njengeHolo enye. isiqalelo.