A question about extended kalman filter block

Hi everybody. I have a problem in implementing extended kalman filter in simulink for a quarter car active suspension system. Has anyone worked with the ekf block so he can help with my problem? And I explain it in more details?

Actually when I use the block as an open loop without controller, it estimates states properly. But when I add the controller u to the block, it doesnt work!

[praguna manvi]

Hi @Faezeh Yousefpour,

Can you share your model for the same.