i am workin with matlab (im not very good on it) for the subject automatic Contr

Question

i am workin with matlab (im not very good on it) for the subject automatic Control, and i must fix my process, the transfer function is 1755 / { (3.9S+1)*(0.78S+1)*(0.078S+1)}, the proces is unstable, an i must fix it, i need to do (syntez) synthesis with logarithmic characteristics (BODE) for a corrective device in series, forfinal response with Overshoot=25-35 %, settling time (1-1.2)seconds, i have createt a simply regulator and i have fixet the step response but the phase in the BODE diagram is very bad, our profesor recommended that the requiret characteristics must pass at the point W=10 sec with a slope of -20 dB/dec, itheer are 3 photos of my work, please can anyone help me, this work is 30 points on the final exam on 5.2.2013

Explanation / Answer

too large question........ post clearly frnd..........

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