Hidden oscillations in PLL
This examples demonstrates limitations of PLL simulation in MATLAB. Simulation of the same model of 2-phase PLL gives qualitatively wrong (false) results with default simulation step (sampling step).
Complete description of the model and mathematical explanation can be found in arxiv.org/pdf/1506.02484
How to run this example:
1. Open "phase_portret_pll_hidden.m" file in MATLAB. Run this script.
This script initialize parameters and plots phase portrait of 2-phase PLL. Phase portrait consists of three trajectories with different initial conditions of filter.
2. Open "pll_hidden_new.slx". Run simulation. Change simulation step to "auto" and back to "1e-3". You should see different results in the output of filter.
Cite As
Marat Yuldashev (2024). Hidden oscillations in PLL (https://www.mathworks.com/matlabcentral/fileexchange/52419-hidden-oscillations-in-pll), MATLAB Central File Exchange. Retrieved .
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Version | Published | Release Notes | |
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1.0.0.0 | Description is updated.
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