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Indukčnostní senzory s proměnnou vzduchovou mezerou<br />
R<br />
m<br />
= ∑<br />
i<br />
m<br />
m m<br />
R m ... magnetický odpor R m = l/µS<br />
li<br />
lFe<br />
2d<br />
2d<br />
= + →<br />
S<br />
iSi<br />
µ<br />
0µ<br />
r<br />
SFe<br />
µ<br />
0Sd<br />
µ<br />
0Sd<br />
I(j ω)<br />
2 2<br />
= N<br />
= N<br />
µ<br />
L<br />
0<br />
R<br />
m<br />
Z(<br />
ω j )<br />
2 d<br />
µ<br />
S<br />
d<br />
= R +<br />
ω j<br />
2<br />
N<br />
Z<br />
= R +<br />
2<br />
N<br />
ω j<br />
R + jX<br />
N<br />
x<br />
a<br />
16
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