Question

Solve in Matlab please. An ltic system is specified by the eq: D(D+1) y(t) = (D+2)x(t)...

Solve in Matlab please.

An ltic system is specified by the eq: D(D+1) y(t) = (D+2)x(t)

a) Find the characteristic polynomial, char. equation, char. roots, and char. modes.

b) find y0(t), zero-input component of the response y(t) for t>=o; if initial conditions is y0(0-) =  y'0(0-) = 1

Homework Answers

Answer #1

The system is given by D(D+1)y(t)=(D+2)x(t)

1) The characteristic polynomial is given by €(€+1)

2) The characteristic equation is given by €(€+1)=0.

3) The characteristic roots are given by €=0,€=-1.

4) The corresponding characteristic modes are c0e0t , c1e-t, i.e., c0, c1e-t

5) The zero input component of the response is given by y0(t)=c0+ c1e-t by equating t=0 with initial conditions.

Here y'(t) = -c1e-t .

hence, we have from the initial conditions

c0+c1=1

-c1=1.

Solving them we get c0=2, c1=-1.

Hence y0(t)=2-e-t.

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