Why do I receive an error when trying to linearize a model with inport block of non-double datatype as my input point in Simulink Control Design?

I have a Simulink model which contains an inport block that outputs a non-double datatype. I selected this signal as my linearization input point. When I open the Tools->Control Design->Linear Analysis GUI and press the Linearize model buttion, I receive the following error:

 Model 'xpcosc' contains nondouble or complex signals. Cannot set nondouble or complex external inputs. Use Data Type Conversions.

Answer 1

[MathWorks Support Team]

This enhancement has been incorporated in Release 2007b (R2007b). For previous product releases, read below for any possible workarounds:

The ability to handle external inputs (inport blocks) of non-double or complex datatypes is not available with the Simulink Control Design Toolbox.

To work around this issue, use an inport block of double data type and then use a signal-conversion block after the inport block to convert the signal back to the required data type.