initial commit / add all books

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+// Calculate damping ratio, natural frequency, frequency of damped oscillations, time constant

+// and steady state error for ramp signal of 5V/s

+clc;

+K=(40*10^-6)/(%pi/2);

+J=0.5*10^-6;

+B=5*10^-6;

+eta=B/(2*(K*J)^0.5);

+disp(eta,'damping ratio=')

+wn=(K/J)^0.5;

+disp(wn,'natural frequency (rad/sec)')

+wd=wn*(1-(eta)^2)^0.5;

+disp(wd,'frequency of damped oscillations (rad/s)')

+tc=1/wn;

+disp(tc,'time constant (s)')

+ess=2*eta/wn;

+disp('for a ramp input of 5V, steady state error (V) =')

+ess=5*2*eta/wn;

+disp(ess,'')

+T_lag=2*eta*tc;

+disp(T_lag,'Time lag (s)')
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