How to solve Riccati equation for nonlinear system

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abdooo89
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Typeset equations: a nonlinear state-space system with x1 dot and x2 dot, Q = [[2, 0], [0, 1]] and R = 1, followed by the matrix Riccati equation and the feedback law u = -R^-1 B^T K x.

How to find matix K (Riccati equatin) <<<<<< pleas help me
 
abdooo89 said:
i need help please

Can you post more of the original assignment? It's not very clear what the meanings of the various terms in your post are.
 
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i need only matrix K for a given matrices
the riccati equation is
A'K-KA-Q+KBR-1 B'K=0

State-dependent matrices A(x) = [[0, 1], [x2^2, 0]] with A boxed, and B(x,u) = [0; (1+sqrt|x1|)(2+u)] with B boxed, in a state equation; below it Q = [[2, 0], [0, 1]], R = 1, and the matrix Riccati equation terms.
 
the problem in this system is non-linearity that is why the riccati equation is hard to solve