MATLAB: How to assign values to temporary variables in the Simscape Language

Question

I would like to assign values to intermediate variables in the equation section of a Simscape file.

Answer 1

In Simscape 3.2 (R2009b), a new "let-in-end" syntax is introduced to allow assignment of temporary variables. This feature is described in the Simscape documentation at the following address:

https://www.mathworks.com/help/releases/R2009b/toolbox/physmod/simscape/lang/brn4h9l-1.html

For newer releases (R2016b onwards) please refer to the following link:

https://www.mathworks.com/help/releases/R2016a/physmod/simscape/lang/using-intermediate-terms-in-equations.html

This feature is not available in Simscape 3.1 (R2009a). To work around this issue, you need to define equalities in the "equation" section of the Simscape file. These equalities will be included in the set of equations and resolved by the Simscape solver.