MATLAB: How to set parameters of Recursive Polynomial Model Estimator in Simulink

online estimationrecursive polynomial model estimatorSystem Identification Toolbox

Hello! everyone,
I have a question when using the Recursive Polynomial Model Estimator. I am trying to achieve the online estimation of a two-input two-output system. So my settings are na: [2,2;2,2], nb: [1,1;1,1]; nk: [1,1;1,1]. But there is an error that shows the number of parameters in na must be a scalar. Why is there such an error? How to fix it?
Thanks.

Best Answer

The Recursive Polynomial Model Estimator supports single output estimations only.