.Buildings.Controls.OBC.CDL.Reals.Validation.Derivative .Buildings.Controls.OBC.CDL.Reals.Validation.Derivative
Validation test for the block
Buildings.Controls.OBC.CDL.Reals.Derivative.
The model integrates a time varying signal, and the differentiates this integrated signal.
Hence, the output der1.y matches the non-integrated signal intWitRes.u,
within a small approximation tolerance.
The instance der1 uses a varying input for T which controls the accuracy of
the derivative approximation. At the start of the simulation, T is small and hence
the output der1.y matches the signal intWitRes.u well.
As expected, the approximation error increases with increasing der1.T.
The instance der2 uses a gain of 2, and it initializes the output to 0.
Hence, there is a fast transient at the beginning, and afterwards the output matches der1.y = der2.y / 2.