电路原理_skja_39

电路原理_skja_39

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周周周周周周周周周周周周周 周周周周周周周周周周周周周 周周周周周周周周周周周周周 周周周周周周周周周周周周周 周周周 周周周周周周周周 周周周 周周周周周周周周 周周周周周周周周 周周周周周周周周 周周周周周 周周周周周 周周周周周周周周周周周周周周周周 周周周周周周周周周周周周周周周周
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周周周周周周周周 周周周周周周周周 周周周周周周周周周周周 nonsinusoidal periodic excitation) 周 周周 (signal) 周周 1. 周周周 (generator) 周周周周周周周周周周周周周周周周周周 t u ( t )
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2. 周周周周周周周周周周周周周周周周周周周周周周周周周 周周周周周周周 周周周周周 (nonlinearity inductance) 周周 i s u + D R 2 u S u + + _ _ ϖ t 0 S u u 2 t 0 u S i
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3. 周周周周周周周周周周周周周周周周 周周周周周周周周周周周周周周周周周 — 周周 (harmonic wave) 周周周 周周周周周周周周 周周周周周周周周 (Fourier series) 周周周周周周周周周周周周周周周周周周周周周周周周周周周周周 周周周周周周周周周周周周周周周周周周周周周 t 周周周 f ( t ) 0 t 周周周 f ( t ) 0 t 周周 0 f ( t ) 周周周周
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周周周周周周 : 周周周周周周周周周周周周周周 周周周周周周周周周 — 周周周周周 周周周周周周周周周 — 周周周周周 周周 T 周周周周 k = 0 周 1 周 2 周 3 k 周周周周周 ) ( ) ( kT t f t f + = T π ϖ 2 = 周 1 周周周周周周周周周周周周周周周周周周周周 周 2 周周周周周周周周周周周周周周周周 周 3 周周周周周周周周周周周周周周周周周 周 < dt t f T 0 ) ( 周周周周周周周周周周周周周周周 f ( t ) 周周周周周周周周周
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) sin( ) sin( ) 2 sin( ) sin( ) ( 1 0 2 2 1 1 0 k k k k k t k c c t k c t c t c c t f θ ϖ + + = + + + + + + + + = = ] sin cos [ ) 2 sin 2 cos ( ) sin cos ( ) ( 1 0 2 2 1 1 0 t k b t k a a t b t a t b t a a t f k k k + + = + + + + + = = 周周周周周周周周周周周周周 周周周周周周周 周周周周
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This note was uploaded on 11/22/2011 for the course EE Ele taught by Professor Cheng during the Fall '10 term at Tsinghua University.

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