Pseudo Inverse in Simulink during simulation

Good day,

Currently I have the following situation:

So every time step there are three output variables: deltatheta, deltaqdot and deltau (all scalars). Now the following relationship holds:

deltaqdot = A*deltatheta + B*deltau

This means after three time steps I am theoretically able to calculate A and B using the inverse. However, I want to take more measurements into account, for example the last 10. This means I somehow have to store the results and then calculate the pseudo inverse every time step (or at least, starting when 10 time steps passed by from the beginning).

I know there is a pseudo inverse block in Simulink, but I don't know how I can apply this block to measurements of the last 10 time steps for instance.

Any ideas?