ORBIT - Operating-Regime-Based Modeling and Identi cation Toolkit

ORBIT is a MATLAB-based toolkit for black-box and grey-box modeling of non-linear dynamic systems. The model representation is based on multiple local models valid in di erent operating regimes, that are smoothly blended into a global non-linear model. ORBIT is a computeraided modeling environment that supports the interactive development of regime-based models on the basis of a mixture of empirical data and prior knowledge (similar to Takagi-Sugeno-type fuzzy models). ORBIT contains functions for robust parameter identi cation, including constrained identi cation, regularization and Bayesian identi cation. There are functions for structure identi cation, including selection of the local model orders as well as decompositions into operating regimes that give a good t to the data. Model validation, simulation, visualization and automatic code generation are also supported.