Sample with (simulated) Analog-Digital converter effects including
noise
This block is similar to the Sample
block. The only difference is that after the sampling of the input
signal, simulated real-world effects are applied on the sampled
signal. In particular:
- The output is limited, if parameter limited = true.
- The output is value discretized in the form of an
Analog-Digital converter with a defineable number of bits, if
parameters limited = true, and quantized = true.
- Noise is added to the output if parameter noisy = true.
A pseudo random number generator is used to generate uniformly
distributed random numbers in a given band.
Example
The following
example samples a sine signal with a periodic clock of 20 ms
period, and adds the following effects:
- Limits the output to +/- 0.8.
- Discretizes the output with an 8 bit AD converter.
- Adds large uniform noise with a band of +/- 0.2.
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 |
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model |
simulation result |
The output y is quite far away from the continuous-time input
signal, due to the strong discretization and large noise applied to
the sampled input.
Generated at 2026-04-14T18:18:34Z by OpenModelicaOpenModelica 1.26.3 using
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.Modelica_Synchronous.RealSignals.Sampler.SampleWithADeffects