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Solve the characteristic equation s2 + 2as + ωθ
Rj
LCRm
1 R1
O' — -———— -f∙ ---
2CRm 2L
-2a ± ʌ/4cv2 - 4ω2
^ 1
3~~2CRm
ʌʃɪ
2L V v 2CRm
-^1)2 _ /_!_ +
2L} yLC LCRm
Now sɪ and S2 are defined, along with ω0 the resonant frequency (in radians∕sec) and a the
damping factor
We look for a solution of the form υ(t) = K1es1t + K2es2t + K3
We need to solve for K1, K2 and K3 from the final and initial conditions
K1e~o° + K2e °° + K3 = is(R1∖∖Rm)
■ ⅛[K1e∙>< + ¾e∙=< + ¾] = ⅛∣ho = ≈√Cm
Kie0 + K2e0 + K3 = υ(0) = 0
K3 - ⅞ ( .Ri I ∣,Rto ) - is β11+‰
■ s1K1 + s2K2 = ^∖^ = is∣Cm
K1+ K2 = -K3
Now the system is fully defined