Question

[14] The frequency response test on a system yielded the following data: db 900 610 450 00 0.1 -14 0.5 1 5 10 -450 -1360 -1800 7.5 10 50 -19 100 -31 Plot the data on a semi-log graph sheet. And, also determine the system transfer function in a frequency domain.

Answer 1

Plot 1 Is between log$\omega$ and Gain (db)

Plot 2 is between log$\omega$ and phase($\phi$)

15 10 A 2 2,5 1.5 -06 5 1 0.5 -1 -1.5 Series1 -10 -15 -20 -25 -30 -35 O

150 100 50 -1.5 -1 -0.5 0.5 1 1.5 2 2.5 Series1 -50 100 150 -200 un d

ulahng inihal slope 2od B1 d 0 () ak wlradu Cornes to loded afe changes ene -1odeldee Aapchangas sradte douhle at -2od8ole clafpe hanges ak 1o rad aeu K 440.1)2 tor alalohg K o.1 Tade c> - 14dB Gain ar w

-14 dlB (Os)2o) 25 oo6 K 2 25000x1D 488 Tramfor ftiis Ioy 4488-16A0 1