System Identification Toolbox™

advice

Analysis and recommendations for data or estimated linear polynomial and state-space models

Syntax

advice(model)
advice(data)

Arguments

model

Name of the idarx, idgrey, idpoly, idproc, or idss model object. These model objects belong to the idmodel abstract class, representing linear polynomial and state-space models.

data

Name of the iddata object.

Description

advice(model) displays the following information about the estimated model in the MATLAB^® Command Window:

• Does the model capture essential dynamics of the system and the disturbance characteristics?

• Is the model order higher than necessary?

• Is there potential output feedback in the validation data?

• Would a nonlinear ARX model perform better than a linear ARX model?

advice(data) displays the following information about the data in the MATLAB Command Window:

• What are the excitation levels of the signals and how does this affects the model orders? See also pexcit.

• Does it make sense to remove constant offsets and linear trends from the data? See also detrend.

• Is there an indication of output feedback in the data? See also feedback.

See Also

addreg

aic