Unstable periodic orbit (UPO) detection
Example: matlab ddesd_controlled_Lorenz_v2(0, 0, 1, 1, 0.01, 0.1, 0.1)
Reference：Leveraging neural differential equations and adaptive delayed feedback to detect unstable periodic orbits based on irregularly sampled time series，https://aip.scitation.org/doi/full/10.1063/5.0143839