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WOLFRAM SYSTEM MODELER

Sampler

Library of sampler and hold blocks for Real signals

Package Contents

	Sample Sample the continuous-time, Real input signal and provide it as clocked output signal (clock is inferred)
	SampleClocked Sample the continuous-time, Real input signal and provide it as clocked output signal. The clock is provided as input signal
	SampleVectorizedAndClocked Sample the continuous-time, Real input signal vector and provide it as clocked output signal vector. The clock is provided as input signal
	SampleWithADeffects Sample with (simulated) Analog-Digital converter effects including noise
	Hold Hold the clocked, Real input signal and provide it as continuous-time output signal (zero order hold)
	HoldWithDAeffects Hold with (simulated) Digital-Analog converter effects and computational delay
	SubSample Sub-sample the clocked Real input signal and provide it as clocked output signal
	SuperSample Super-sample the clocked Real input signal and provide it as clocked output signal
	SuperSampleInterpolated Super-sample the clocked Real input signal and provide it linearly interpolated as clocked output signal (this is also called an Interpolator)
	ShiftSample Shift the clocked Real input signal by a fraction of the last interval and and provide it as clocked output signal
	BackSample Shift the clock of the Real input signal backwards in time (and access the most recent value of the input at this new clock)
	AssignClock Assign a clock to a clocked Real signal
	AssignClockVectorized Assign a clock to a clocked Real signal vector
	Utilities Utility components that are usually not directly used

Information

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

This package contains blocks that mark boundaries of a clocked partition and transform a Real signal from one partition to the next. Especially, the following blocks are provided:

Boundary Type	Block Name	Description
continuous-time → clocked	Sample	Sample a continuous-time signal.
	SampleClocked	Sample and associate a clock to the sampled scalar signal.
	SampleVectorizedAndClocked	Sample an input vector and associate a clock to the sampled vector signal.
	SampleWithADeffects	Sample with (simulated) Analog-Digital converter effects including noise.
clocked → continuous-time	Hold	Hold a clocked signal with zero-order hold.
clocked → continuous-time	HoldWithDAeffects	Hold with (simulated) Digital-Analog converter effects and computational delay.
clocked → clocked	SubSample	Sub-sample a signal (output clock is slower as input clock).
	SuperSample	Super-sample a signal (output clock is faster as input clock).
	SuperSampleInterpolated	Super-sample a signal with linear interpolation (output clock is faster as input clock).
	ShiftSample	Shift a signal (output clock is delayed with respect to input clock).
	BackSample	Shift a signal and start the output clock before the input clock with a start value.
within clocked partition	AssignClock	Assign a clock to a clocked scalar signal.
within clocked partition	AssignClockVectorized	Assign a clock to a clocked vector signal.

Additionally, package Utilities contains utility blocks that are used as building blocks for user-relevant blocks. Especially, block UpSample can be used in combination with a FIR filter block to model super-sampling with interpolation and filtering.

Wolfram Language

In[1]:=

SystemModel["Modelica.Clocked.RealSignals.Sampler"]

Out[1]:=