This paper deals with the performance of some numerical integration (NI) methods for ordinary differential equations in real-time applications involving stiffness. After summarizing the main results about accuracy and stability of some well-known schemes, the point of view of the control is emphasized, by showing the impact of the NI on the dynamics of the discretized model. Moreover, some peculiarities of the NI in hybrid systems are touched by introducing a simple hybrid model for testing the performances of some NI schemes. Finally, some experimental tests are shown, dealing with a control of a sensorless drive whose model is characterized by stiffness.
|Titolo:||Numerical integration of ODEs in real-time systems like state observers : stability aspects|
BRESSAN, NICOLETTA (Ultimo)
|Parole Chiave:||adaptive estimation; integration; numerical stability; real-time processing; sensorless control|
|Settore Scientifico Disciplinare:||Settore MAT/08 - Analisi Numerica|
|Data di pubblicazione:||feb-2012|
|Digital Object Identifier (DOI):||10.1109/TIA.2011.2175471|
|Appare nelle tipologie:||01 - Articolo su periodico|