function [Kc,tauI,KI,par]=basecase(par)
kapp(1)    = 1;                                 % process gain from v1 to V

kapp(2)    = par.A21/(par.A22);                % process gain from v2 to ca

par.p(2) = 0;

par.v10 = par.q10;                          % transformed input bias case 1
par.v20 = par.q20;                          % transformed input bias case 2


tauC(1) =     par.taur;   % desired closed loop time constant for flow loop


tauC(2) = par.thetaca;    % desired closed loop time constant for flow loop
if tauC(2)==0
    tauC(2) = par.taur;
end
theta2 = par.thetaca-(1/par.A22);
tauC(2) = tauC(2)-(1/par.A22);





% PI-controller for hold up
Kc(1)   = 1/kapp(1)/(tauC(1));                     % first-order plus delay
tauI(1) = 4*(tauC(1)); 
KI(1)   = Kc(1)/tauI(1);

% PI-controller for concentration
Kc(2)   = 1/kapp(2)/(tauC(2)+theta2);              % first-order plus delay
tauI(2) = 4*(tauC(2)+theta2); 
KI(2)   = Kc(2)/tauI(2);
end
