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Characteristic Index Of Filter

The character frequency

1) Iyo bhendi cutoff frequency fp = wp/ (2p) ndiyo frequency yenzvimbo yemuganhu pakati pebhendi rekupfuura nenzvimbo yekuchinja, uye kuwana kwechiratidzo panguva iyoyo kunodonha kusvika kumucheto wakaderera wegadziriro yekugadzira;
2) Iyo bhendi cutoff frequency fr = wr/ (2p) ndiyo frequency yenzvimbo yemuganhu pakati pebhendi nenzvimbo yekuchinja, uye kuora kwechiratidzo chepoindi kunodonha kusvika kumuganhu wepasi pemurume;
3) Transition frequency fc = wc/ (2p) ndiyo frequency yechiratidzo chesimba rekudzivirira kusvika ku1/2 (inenge 3dB), kazhinji, FC inowanzoshandiswa sepasi kana bhendi cutoff frequency;
4) Iyo yakasikwa frequency f0 = w0 / (2p) ndeyekuti kana dunhu risina kurasikirwa, iyo resonant frequency yefirita, masekete akaomarara kazhinji ane akawanda echisikigo frequency.

Kuwana uye kuora

Kuwana kwesefa mukati mebhandi hakusi nguva dzose.
1) yeyakaderera-pass sefa kuburikidza nebhendi kuwana KP kazhinji inoreva kuwana kana iyo w=0;high-pass inoreva kuwana pa w→∞;with general rules inoreva kuwana pacentre frequency;
2) yebhendi Resistance filter, iyo yekukwevera kushandiswa kwebhanhire kunofanira kupiwa, uye kuora kushandiswa kunotsanangurwa seyo inverse yekuwana;
3) Iyo bhendi kuwana shanduko yevhoriyamu KP inoreva kusiyanisa kwakanyanya kwekuwana kwega kwega poindi mubhendi, uye kana KP iri mudb, inoreva huwandu hwekusiyana kwekuwana kukosha kweDB.

Damping coefficient uye quality factor

Iyo yekunyorovesa coefficient ibasa rekutarisa diagonal frequency yefirita sechiratidzo chew0, uye indekisi inomiririra kuora kwesimba musefa.Iyo inverse yekunyorovesa coefficient inodaidzwa kuti quality factor, inova indekisi yakakosha ye frequency sarudzo maitiro e * Valence band pass uye band resistance Sefa, q= w0/W.
Iyo W mune fomula ndeye 3dB bandwidth yebhendi-pass kana bhendi-resistance sefa, iyo W0 ndiyo yepakati frequency, uye kazhinji kazhinji iyo yepakati frequency yakaenzana neyakasikwa frequency.

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Sensitivity Iyo sefa yedunhu inoumbwa nezvikamu zvakawanda.

Kunzwisiswa kwechiratidzo chekushanda y kwesefa kune X kuchinja kwechikamu chechikamu chinorekodhwa seSXY, inotsanangurwa se: sxy= (dy/y)/(dx/x).
Kunzwa hakusi pfungwa nekunzwa kwekuyeresa chiridzwa kana chedunhu system, uye iyo diki yekunzwa, yakasimba iyo kukanganisa kushivirira kwedunhu uye yakakwirira kugadzikana.


Nguva yekutumira: Mar-30-2021