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.

Numerical integration of ODEs in real-time systems like state observers : stability aspects / M.F. Iacchetti, R. Perini, M.S. Carmeli, F. Castelli-Dezza, N. Bressan. - In: IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS. - ISSN 0093-9994. - 48:1(2012 Feb), pp. 6074941.132-6074941.141.

Numerical integration of ODEs in real-time systems like state observers : stability aspects

N. Bressan
Ultimo
2012

Abstract

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.
adaptive estimation; integration; numerical stability; real-time processing; sensorless control
Settore MAT/08 - Analisi Numerica
feb-2012
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/234494
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