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// Calculation of desired closed loop characteristic polynomial, as discussed in Sec. 7.7.
// 9.4
// function [phi,dphi] = desired(Ts,rise,epsilon)
// Based on transient requirements,
// calculates closed loop characteristic polynomial
function [phi,dphi] = desired(Ts,rise,epsilon)
Nr = rise/Ts; omega = %pi/2/Nr; rho = epsilon^(omega/%pi);
phi = [1 -2*rho*cos(omega) rho^2]; dphi = length(phi)-1;
endfunction;
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