An implementation of the system identification method introduced in the following paper
Keito Yamada, Ichiro Maruta, Kenji Fujimoto:
Subspace State-Space Identification of Nonlinear Dynamical System Using Deep Neural Network with a Bottleneck,
IFAC-PapersOnLine, Volume 56, Issue 1, (presented in NOLCOS 2022)
https://doi.org/10.1016/j.ifacol.2023.02.018
Based on data obtained from the following simulator,
see test_model.py