quick easy question
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im trying to write an rlc script, and it doesn't like my Vc line. what is my error? i've already established alpha omega and t.
if (Alpha^2 < Omega0^2);
Omega_d = sqrt(Omega0^2 - Alpha^2);
% Frequency of sin(wt) term
fprintf('The Circuit is UNDERDAMPED! [alpha<omega]\r\n');
B1 = -Vb;
B2 = ((Alpha*B1)/Omega_d);
Vc = 10 + (B1*cos*(Omega_d*t) + B2*sin*(Omega_d*t))*(exp(-Alpha*t));
plot(t, Vc, 'blue'); %plot the underdamped case in blue
end
回答（2 个）
Dr. Seis
2012-5-4
It looks like "t" is an array of numbers, therefore you need to incorporate a "." before you multiply "(B1*cos*(Omega_d*t) + B2*sin*(Omega_d*t))" and "(exp(-Alpha*t))" to produce element-by-element multiplication. I.e.:
Vc = 10 + (B1*cos(Omega_d*t) + B2*sin(Omega_d*t)).*(exp(-Alpha*t));
Also, you have an "*" between you trig functions. Remove the "*" between the "cos" and "(Omega_d*t)" and similarly with the "sin" and "(Omega_d*t)"
katerina jablonski
2012-5-4
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1 个评论
Dr. Seis
2012-5-4
Oh heck... sorry I glazed over that one. Remove the "*" between the "cos" and "(Omega_d*t)" and similarly with the "sin" and "(Omega_d*t)"
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2012-5-4
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