TY - GEN
T1 - Parameter estimation in switched systems
AU - Bech Borchersen, Anders
AU - Larsen, Jesper Abildgaard
AU - Wisniewski, Rafal
PY - 2015/11/4
Y1 - 2015/11/4
N2 - Parameter estimation in switched systems is an interesting topic, since such vital models can be used for modeling a wide range of real life systems controlled by a hysteresis or other switching mechanics. In this work, a model for enabling the extended Kalman filter to estimate the parameters in such a switched hysteresis system is presented and tested. The nonlinear model used in the filter is found by a continuous approximation of the discrete switching function used for describing the switched systems. The proposed filter are tested which shows that the filter is able to estimate all the model parameters, this includes the parameters describing the switching. And since the EKF is a recursive filter the method is suitable for real life implementation, therefore a test on an actual data set from an operational turbine have been used with success to validate that the proposed method is actually applicable for parameter estimation in a real world switched system.
AB - Parameter estimation in switched systems is an interesting topic, since such vital models can be used for modeling a wide range of real life systems controlled by a hysteresis or other switching mechanics. In this work, a model for enabling the extended Kalman filter to estimate the parameters in such a switched hysteresis system is presented and tested. The nonlinear model used in the filter is found by a continuous approximation of the discrete switching function used for describing the switched systems. The proposed filter are tested which shows that the filter is able to estimate all the model parameters, this includes the parameters describing the switching. And since the EKF is a recursive filter the method is suitable for real life implementation, therefore a test on an actual data set from an operational turbine have been used with success to validate that the proposed method is actually applicable for parameter estimation in a real world switched system.
U2 - 10.1109/CCA.2015.7320869
DO - 10.1109/CCA.2015.7320869
M3 - Article in proceeding
AN - SCOPUS:84964380853
SN - 9781479977871
T3 - I E E E International Conference on Control Applications. Proceedings
SP - 1793
EP - 1798
BT - 2015 IEEE Conference on Control Applications (CCA)
PB - IEEE
T2 - IEEE Conference on Control and Applications, CCA 2015
Y2 - 21 September 2015 through 23 September 2015
ER -