PID controller tracking a step-changing setpoint. Deterministic, narrowband, strongly correlated.
Standard analysis sees: smooth / autocorrelated; long-range memory (persistent); red spectrum (low-frequency / 1-over-f power); low-complexity (predictable, not noise-like); volatility-clustering (bursty); multifractal; low-dimensional; nonstationary / drifting. The atlas additionally detects Multifractal Spectrum:hurst_estimate.









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/d_curve/PID_Controller.png)








/phi_spectrum/PID_Controller.png)










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| Nearest neighbor | Distance | |
|---|---|---|
| Triple Pendulum | 3.24 | cross-origin |
| FPUT N=16 | 3.48 | cross-origin |
| Magnetic Pendulum (3-Magnet) | 3.60 | cross-origin |
Catch24 › Catch24:PD_PeriodicityWang_th0_01 | rank 3/307 | 3512.5333 |
Catch24 › Catch24:SB_BinaryStats_diff_longstretch0 | rank 4/307 | 1094.8000 |
H² × ℝ (Thurston) › H² × ℝ (Thurston):hyperbolic_step_dispersion | rank 304/307 | 0.0308 |
Visibility Graph › Visibility Graph:nvg_hvg_reach_divergence | rank 5/307 | 0.9949 |
Wasserstein › Wasserstein:recurrence_distance | rank 1/307 | 0.1077 |