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Latest posts from topic “Transitorio del primo ordine” Latest posts from topic “Transitorio del primo ordine” on “ElectroYou”. 2016-10-19T01:59:58Z https://www.electroyou.it/forum/viewtopic.php?f=2&t=66256 Re: Transitorio del primo ordine https://www.electroyou.it/forum/viewtopic.php?f=2&t=66256#p674588 g.schgor 2016-10-19T23:19:12Z 2016-10-19T23:19:12Z
Proviamo a ragionare sul circuito RL a cui viene applicata
la tensione sinusoidale a 220 V.
La corrente è:
[unparseable or potentially dangerous latex formula]
in regime stazionario, al passaggio per lo zero
della tensione il valore della corrente è quindi -2A
(per la precisione -1.99A).
Ma all'applicazione della tensione (cioè per t=0),
la corrente è quella iniziale di L (nel nostro caso 10A),
quindi il valore del transitorio K dovrà compensare
la corrispondente corrente a tegime.
Non ti pare?
Re: Transitorio del primo ordine https://www.electroyou.it/forum/viewtopic.php?f=2&t=66256#p674539 pietro1990 2016-10-19T18:53:51Z 2016-10-19T18:53:51Z
Mi scusi ma la condizione iniziale che ho determinato per t<0 , ovvero [unparseable or potentially dangerous latex formula] , quando applico il principio di sovrapposizione degli effetti va considerata solamante per il generatore di corrente? Perchè in quel caso mi troverai [unparseable or potentially dangerous latex formula] nell'espressione finale
Re: Transitorio del primo ordine https://www.electroyou.it/forum/viewtopic.php?f=2&t=66256#p674530 g.schgor 2016-10-19T17:57:48Z 2016-10-19T17:57:48Z
Direi che il valore di K debba compensare
lo sfasamento [unparseable or potentially dangerous latex formula]
in mnodo che [unparseable or potentially dangerous latex formula]
Re: Transitorio del primo ordine https://www.electroyou.it/forum/viewtopic.php?f=2&t=66256#p674522 pietro1990 2016-10-19T17:16:59Z 2016-10-19T17:16:59Z
Un errore che ho trovato è stato il valore di K che non deve essere K=8,04, ma K=11,96. Per cui alla fine ottengo [unparseable or potentially dangerous latex formula] .Non riesco a trovare altri errori #-o #-o
Re: Transitorio del primo ordine https://www.electroyou.it/forum/viewtopic.php?f=2&t=66256#p674486 g.schgor 2016-10-19T15:06:04Z 2016-10-19T15:06:04Z
E non ti sembra strano?
Re: Transitorio del primo ordine https://www.electroyou.it/forum/viewtopic.php?f=2&t=66256#p674461 pietro1990 2016-10-19T12:17:40Z 2016-10-19T12:17:40Z
[unparseable or potentially dangerous latex formula]
Re: Transitorio del primo ordine https://www.electroyou.it/forum/viewtopic.php?f=2&t=66256#p674460 g.schgor 2016-10-19T12:12:06Z 2016-10-19T12:12:06Z
Se nell'ultima espressione poni t=0 cosa ottieni?
Re: Transitorio del primo ordine https://www.electroyou.it/forum/viewtopic.php?f=2&t=66256#p674458 pietro1990 2016-10-19T12:00:57Z 2016-10-19T12:00:57Z
Se intende la condizione inziale, ovvero per t<0, mi trovo [unparseable or potentially dangerous latex formula]
Re: Transitorio a ho semplicemente simulato il Adel primo or https://www.electroyou.it/forum/viewtopic.php?f=2&t=66256#p674457 g.schgor 2016-10-19T11:49:42Z 2016-10-19T11:49:42Z
Non ho controllato il procedimento,
ma ho semplicemente simulato il,transitorio per t>0.
Risuta uno scarto nel valore iniziale (che dovrebbe essere 10A)
Puoi controllare?
Transitorio del primo ordine https://www.electroyou.it/forum/viewtopic.php?f=2&t=66256#p674418 pietro1990 2016-10-19T01:59:58Z 2016-10-19T01:59:58Z
Potreste indicarmi che errori ho commesso in questo esercizio?
Determinare [unparseable or potentially dangerous latex formula] per t<0 e t>0, sapendo che l'int. si chiude in t=0;R_1=10,R_2=10,L=3mH ,J=10A ,[unparseable or potentially dangerous latex formula]

Per t<0 , [unparseable or potentially dangerous latex formula]

Pert>0 ho applicato il principio di sovrapposizione degli effetti , per cui [unparseable or potentially dangerous latex formula]

Ho calcolato prima [unparseable or potentially dangerous latex formula] dal circuito seguente :

Dove applicando Norton ho ricato Rn=R_1=10 dal seguente circuito

e la corrente I_n=E/R_1=220/10=22 dal seguente

Più la soluzione particolare [unparseable or potentially dangerous latex formula], avendo posto Z_1=10 ,Z_2=10 , Z_L=jWL=0,942j nel circuito

Ricavando [unparseable or potentially dangerous latex formula] = [unparseable or potentially dangerous latex formula] = 21,9e^{-j0,009}. Quindi ponendo [unparseable or potentially dangerous latex formula] , con [unparseable or potentially dangerous latex formula] =ke^{-3333t}.Ho ricavato k ponendo [unparseable or potentially dangerous latex formula] => 10=k-1,96 => k=8,04, per cui [unparseable or potentially dangerous latex formula].
Poi ho calcolato [unparseable or potentially dangerous latex formula] dal circuito seguente

Apllicando Norton ho ricavato R_n=10 e I_n=1, quindi ho determinato, [unparseable or potentially dangerous latex formula] [unparseable or potentially dangerous latex formula] = ke^{-3333t}, e da [unparseable or potentially dangerous latex formula] => k+10 ho ricavato k=0 per cui [unparseable or potentially dangerous latex formula] .In conclusione [unparseable or potentially dangerous latex formula]