ps5_soln_08 - EE 350 Problem 28: Problem Set 5 Solutions...

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EE 350 Problem Set 5 Solutions -11- Problem 28:
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EE 350 Problem Set 5 Solutions -12- Problem 28: % EE 350 Fall 2008; % Problem Set 5 Problem 28 close all; clear % measured resistances R1000 = 985; RL = 42.0; R240 = 236; % RL circuit data freq_RL_exp = [15,30,50,90,150,200,300,400,500,700,900,1200,1500]; f_RL_exp = [1.91,1.91,1.91,1.92,1.94,1.94,1.97,1.97,1.97,1.97,1.97,1.97,1.97]; y_RL_exp = [1.83,1.80,1.75,1.61,1.36,1.19,0.906,0.706,0.581,0.425,0.334,0.250,0.200]; p_RL_exp = [-3.6,-11.9,-18,-29.2,-43,-51.8,-62.5,-69.1,-72,-78,-81.1,-83.7,-84.3]; % RLC circuit data freq_RLC_exp = [10,30,50,60,70,80,90,100,110,120,300,1000]; f_RLC_exp = [1.98,1.953,1.88,1.80,1.72,1.72,1.77,1.81,1.86,1.89,1.97,1.97]; y_RLC_exp = [2,2.22,2.64,2.83,2.81,2.5,2.03,1.63,1.30,1.06,0.141,0.0133]; p_RLC_exp = [-5.4,-16.7,-36,-53,-75.8,-97.9,-116,-130,-136,-142,-159,-167]; %estimate P(jw) and Q(jw) for both systems; normalize so that an = 1 mag_H_RL_exp = y_RL_exp ./ f_RL_exp; H_RL_exp = mag_H_RL_exp .* exp(j * p_RL_exp * pi/180 ); m_RL = 0; n_RL = 1; [P_RL_est, Q_RL_est] = invfreqs(H_RL_exp,2*pi*freq_RL_exp,m_RL,n_RL); P_RL_est = P_RL_est/Q_RL_est(1); Q_RL_est = Q_RL_est/Q_RL_est(1); mag_H_RLC_exp = y_RLC_exp ./ f_RLC_exp; H_RLC_exp = mag_H_RLC_exp .* exp(j * p_RLC_exp * pi/180 ); m_RLC = 0; n_RLC = 2; [P_RLC_est, Q_RLC_est] = invfreqs(H_RLC_exp,2*pi*freq_RLC_exp,m_RLC,n_RLC); P_RLC_est = P_RLC_est/Q_RLC_est(1); Q_RLC_est = Q_RLC_est/Q_RLC_est(1); % construct mag and phase using estimated P and Q polynomials f = logspace(0,4); w = 2*pi*f; [mag_H_RL_est, p_RL_est]
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This note was uploaded on 10/16/2008 for the course EE 350 taught by Professor Schiano,jeffreyldas,arnab during the Fall '07 term at Pennsylvania State University, University Park.

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ps5_soln_08 - EE 350 Problem 28: Problem Set 5 Solutions...

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