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.
|
 |
 |
|
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 2025-10-30T19:21:05Z
by OpenModelicaOpenModelica 1.25.5 using GenerateDoc.mos
.Modelica_Synchronous.RealSignals.Sampler.SampleWithADeffects