Measurement Covariance Matrix must be non-empty

Hi,

I am currently using the EKF block for one of my simulations. As soon as I start the simulation, it shows an error as shown below:

I have double checked my R matrix and it contains values but for some reason EKF block is throwing an error saying it is empty.

A quick Internet search regarding this issue returned nothing.

Any guidance on this would be helpful

Thanks,

Suraj

[Ayush]

It would be beneficial for us if you share your model so that we can analyze it.

Answer 1

[Maneet Kaur Bagga]

Hi @Suraj Parasuram,

As mentioned in the above problem I understand that the R matrix is not empty while running the EKF Block for the simulation. The issue might be encountered due to the license and hence you can check using the below code:

% Check if Control System Toolbox is licensed
if license('test', 'Control_System_Toolbox')
    disp('Control System Toolbox is licensed.')
else
    disp('Control System Toolbox is not licensed.')
end

Also, you can refer to MATLAB answers addressing the similar queries using the following links:

https://www.mathworks.com/matlabcentral/answers/1676834-why-do-i-get-the-error-failed-to-evaluate-mask-initialization-commands-cannot-change-the-model-wh

https://www.mathworks.com/matlabcentral/answers/1630170-simulink-error-failed-to-evaluate-mask-initialization-commands

Thank You!

Maneet Bagga