Talk:Separation principle

Proof leaves something to be desired?
The proof only shows the stability of the system. It does not show IMHO that the Separation Principle holds, i.e. that the resulting system is optimal. Encyclops (talk) 23:48, 9 May 2009 (UTC)
 * I think you'r right, unless we're both misunderstanding the meaning of "optimal" here. In addition, it looks like perfect knowledge of the system is used as an extra implicit assumption here. This is seen in $$u(t) = - K \hat{\textbf{x}}$$. u(t) is in practice a function of y(t) which does not give x, unless an assumption about C is made. (Or so I think) EverGreg (talk) 19:47, 10 May 2009 (UTC)