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Nheyo yekushanda ye inductance inonyanya kujeka. Kuti titsanangure kuti inductance chii, isu tinotanga kubva kune yakakosha chiitiko chemuviri.

1. Zviitiko zviviri uye mutemo mumwechete: magetsi-induced magnetism, magnetism-induced magetsi, uye mutemo weLenz.

1.1 Electromagnetic phenomenon

Pane kuyedza mufizikisi yechikoro chesekondari: kana tsono diki yemagineti ikaiswa pedyo nekondukita ine ikozvino, kutungamira kwediki remagineti tsono inotsausa, iyo inoratidza kuti kune magineti yakapoteredza ikozvino. Ichi chiitiko chakawanikwa neDanish physicist Oersted muna 1820.

Kana tikatenderedza conductor kuita denderedzwa, magineti anogadzirwa nedenderedzwa rega rega rekondukita anogona kupindirana, uye iyo yakazara magineti ichava yakasimba, iyo inogona kukwezva zvinhu zvidiki. Mumufananidzo, iyo coil inosimbiswa neazvino ye2 ~ 3A. Ziva kuti iyo enameled waya ine yakatemerwa ikozvino muganhu, zvikasadaro ichanyungudika nekuda kwekupisa kwakanyanya.

2. Magnetoelectricity phenomenon

Muna 1831, musayendisiti wokuBritain, Faraday, akawana kuti kana chimwe chikamu chekondukita wedunhu rakavharika chikafamba kuti chicheke simba remagineti, magetsi achagadzirwa pacondukita. Chinodiwa ndechekuti dunhu uye magineti ari munzvimbo inoshanduka, saka inonzi "dynamic" magnetoelectricity, uye iyo inogadzirwa ikozvino inonzi induced current.

Tinogona kuita kuyedza nemotor. Mune yakajairika DC brushed mota, iyo stator chikamu igineti yekusingaperi uye chikamu cherotor ndeye coil conductor. Kutenderedza nemaoko rotor zvinoreva kuti conductor iri kufamba kuti icheke magineti mitsetse yesimba. Uchishandisa oscilloscope kubatanidza magetsi maviri emota, shanduko yemagetsi inogona kuyerwa. Jenereta inogadzirwa zvichienderana nemusimboti uyu.

3. Mutemo weLenz

Mutemo waLenz: Kutungamira kweiyo induced ikozvino inogadzirwa neshanduko yemagineti flux ndiyo nzira inopokana nekushandurwa kwemagineti flux.

Kunzwisisa kuri nyore kwemutsara uyu ndekwekuti: kana iyo magineti (yekunze magineti) yenzvimbo ye conductor ikawedzera kusimba, iyo magineti inogadzirwa neiyo induced ikozvino inopesana neyekunze magineti, zvichiita kuti iyo yakazara magineti ive isina simba kupfuura yekunze. magnetic field. Kana iyo magineti (yekunze magineti) yenzvimbo ye conductor ikaita kushaya simba, iyo magineti inogadzirwa neiyo induced ikozvino inopesana neyekunze yemagineti, ichiita iyo yakazara yakazara magineti simba kupfuura rekunze remagineti.

Mutemo weLenz unogona kushandiswa kuona kutungamira kweiyo induced ikozvino mudunhu.

2. Spiral chubhu coil - kutsanangura mashandiro anoita inductorsNeruzivo rwezviri pamusoro apa zviitiko uye mutemo mumwechete, ngationei kuti inductors inoshanda sei.

Iyo yakapusa inductor ndeye spiral chubhu coil:

Mamiriro panguva yemagetsi

Isu tinocheka chikamu chidiki cheiyo spiral chubhu uye tinogona kuona maviri coil, coil A uye coil B:

Munguva yesimba-pakuita, mamiriro acho akaita seinotevera:

①Coil A inopfuura neazvino, ichifungidzira kuti kwairi kuita sekuratidzwa neblue solid line, iyo inonzi yekunze excitation current;
②Maererano nemusimboti weelectromagnetism, iyo yekunze excitation ikozvino inoburitsa magineti, iyo inotanga kupararira munzvimbo yakatenderedza uye inovhara coil B, iyo yakaenzana necoil B kucheka magineti mitsara yesimba, sezvinoratidzwa neblue dotted line;
③Maererano nemusimboti wemagnetoelectricity, yazvino induced inogadzirwa mucoil B, uye kutungamira kwayo kunoratidzwa negirinhi yakasimba mutsara, uyo wakatarisana nekunze kwekunakidzwa kwazvino;
④Maererano nemutemo waLenz, iyo magineti inogadzirwa neiyo induced ikozvino kurwisa iyo magineti yekunze kwekunakidzwa kwazvino, sekuratidzwa negirinhi ine doti mutsara;

Mamiriro ezvinhu mushure mekunge simba-pari ragadzikana (DC)

Mushure mekunge simba-pari ragadzikana, iyo yekunze excitation ikozvino yecoil A inogara iripo, uye iyo magineti iyo inogadzira inogara zvakare. Iyo magnetic field haina hukama hwekufamba necoil B, saka hapana magnetoelectricity, uye hapana ikozvino inomiririrwa negirinhi yakasimba mutsara. Panguva ino, iyo inductor yakaenzana nepfupi pfupi yekunakidzwa kwekunze.

3. Hunhu hwe inductance: ikozvino haigoni kuchinja kamwe kamwe

Mushure mekunzwisisa kuti sei aninductorinoshanda, ngatitarisei hunhu hwayo hunonyanya kukosha - ikozvino mune inductor haigone kuchinja kamwe kamwe.

Mumufananidzo, axis yakatwasuka yekurudyi inguva, uye vertical axis ndiyo iripo pane inductor. Nguva iyo switch yakavharwa inotorwa semabviro enguva.

Zvinogona kuonekwa kuti:1. Panguva iyo shanduko yakavharwa, ikozvino pane inductor ndeye 0A, iyo yakaenzana neinductor iri kuvhurika-inotenderera. Izvi zvinodaro nekuti iyo pakarepo inochinja zvakanyanya, izvo zvinogadzira hombe induced ikozvino (girinhi) kuramba kunze excitation current (blue);

2. Mukuita kwekusvika kune imwe nzvimbo yakadzikama, ikozvino pane inductor inoshanduka zvishoma nezvishoma;

3. Mushure mokusvika kune imwe nzvimbo yakadzikama, ikozvino pane inductor ndeye I = E / R, iyo yakaenzana neiyo inductor iri pfupi-inotenderera;

4. Inopindirana neiyo induced current ndiyo induced electromotive force, iyo inoshanda kupikisa E, saka inonzi Back EMF (reverse electromotive force);

4. Chii chaizvo chinonzi inductance?

Inductance inoshandiswa kutsanangura kugona kwemudziyo kuramba shanduko dzazvino. Iyo yakasimba iyo kugona kuramba shanduko yazvino, iyo yakakura inductance, uye zvinopesana.

Zvekunakidzwa kweDC, inductor inozopedzisira iri mupfupi-dunhu (voltage iri 0). Zvisinei, panguva yekugadzira simba, magetsi uye ikozvino haisi 0, zvinoreva kuti pane simba. Nzira yekuunganidza simba iri inonzi kuchaja. Inochengetedza simba iri muchimiro chemagnetic field uye inobudisa simba kana ichidiwa (sezvinoita apo kunze kwekunze kusingakwanise kuchengetedza hukuru huripo muhutano hwakagadzikana).

Inductors zvigadziriso zvisingaite mumunda wemagetsi. Inertial midziyo haifarire shanduko, kungofanana nemavhiri anobhururuka mumagetsi. Dzinonetsa kutanga kuruka pekutanga, uye kana dzangotanga kutenderera, dzinonetsa kumira. Iyo yose nzira inoperekedzwa nekushandurwa kwesimba.

Kana iwe uchida, ndapota shanyira webhusaitiwww.tclmdcoils.com.