This example shows a model with a scalar input to a Coulomb & Viscous Friction block that uses scalar expansion to output a vector.
Double click the friction block to see the parameters. Coefficient of viscous friction (Gain) is a scalar value
2, but Coulomb friction value (Offset) is a vector value
[1 3 2 0] . Therefore, the block uses element-wise scalar expansion to compute the output.
Each output is calculated using this formula.
For example, the first offset 1 is calculated as follows.
If the dimensions for the input and
Offset are the same, then no expansion is necessary.