nonlinear state space equations

[trungdien]

Hi!

I want to ask if anybody knows how to solve a nonlinear state space equation using labview

for example:

initial conditionx0 = [298; 305];

xdot(1)=(1/(Mg*cvout))*((mdot*cpin*Tg1)-(mdot*cpout*x(1))+U*A*(x(2)-x(1)));
xdot(2)=1/(mH*cpH)*(Q-U*A*(x(2)-x(1)));

output equ : y=x

And in equations above cpout is a nonlinear function of  x(1):
cpout=cp1*y(1)+cp2*y(2)+cp3*y(3)+cp4*y(4);

cp4=R*(3.28+.593e-3*x(1)+.04e5/x(1)^2);

so we can not calculate A,B,C and D matrix for this to use in labview.( we have nonlinear system)

How can i model and solve this state space equation in labview?

Thanks for your help

[Bob_Schor]

On August 2, 2014 (just over three years ago), a Forum user, "iman-d", asked exactly the same question, with exactly the same text.  Why did you copy and paste a three-year-old question under your own name?

Bob Schor

[Gregory]

Wow, nice find Bob!