Super-sample the clocked Real input signal and provide it linearly interpolated as clocked output signal (this is also called an Interpolator)

Wolfram Language



This information is part of the Modelica Standard Library maintained by the Modelica Association.

This block super-samples the clocked Real input signal u and provides it linearly interpolated between the u-values as clocked output signal y.

To be more precise: The clock of y is factor-times faster than the clock of u. At every tick of the clock of y, the value of y is set to the value of the linearly interpolated value between the last available values of u. The first activation of the clock of y coincides with the first activation of the clock of u. By default, the super-sampling factor is inferred, that is, it must be defined somewhere else. If parameter inferFactor = false, then the super-sampling factor is defined by Integer parameter factor.

For control applications, this block is better suited as block SuperSample since it does not induce "vibrations".


The following example samples a sine signal with a periodic clock of 20 ms period, and then super-samples the resulting clocked signal with a factor of 3 and interpolates the result linearly:

SuperSampleInterpolated_Model.png     SuperSampleInterpolated_Result.png
model simulation result

As can be seen, block superSampleIpo introduces 3 additional clock ticks for the output y and determines the values at these clock ticks, so that the last two available values of the input u are linearly interpolated. The super-sampling factor = 3 is displayed in the icon of the superSampleIpo block. Note the up-arrow in the icon of the SuperSampleInterpolation block indicates that the clock of superSampleIpo.y is faster as the clock of superSampleIpo.u.

Parameters (2)


Value: true

Type: Boolean

Description: = true, if super-sampling factor is inferred


Value: 1

Type: Integer

Description: Super-sampling factor >= 1 (if inferFactor=false)

Connectors (2)


Type: RealInput

Description: Connector of clocked, Real input signal


Type: RealOutput

Description: Connector of clocked, Real output signal

Used in Examples (2)



Example of a SuperSampleInterpolated block for Real signals



Example of an UpSample block for Real signals combined with FIR filter blocks