How to design LQG controller for optimal trajectory

I've problem using LQG control design. I wanna get 1 response which capture in scope. But, in my case I got 3 output response in scope. I thought my kalman filter design was not compatible with actual design..

any idea with my problem?

Thanks..

Answer 1

[John Petersen]

y is obviously of dimension 3. Which element of y do you want to see? Just pick it out with a demux or bus selector.