Online Parameterization of a Function Describing the Open-Circuit Voltage by a Least Square Method with Adaptive Forgetting Factor

2013 ◽  
Vol 160 (11) ◽  
pp. A2155-A2159 ◽  
Author(s):  
Simon Schwunk ◽  
Sebastian Straub ◽  
Max Jung
Keyword(s):  
Open Circuit Voltage ◽  
Least Square Method ◽  
Open Circuit ◽  
Least Square ◽  
Forgetting Factor ◽  
Adaptive Forgetting Factor ◽  
Adaptive Forgetting

scholarly journals Lithium-Ion Battery SOC Estimation Based on Adaptive Forgetting Factor Least Squares Online Identification and Unscented Kalman Filter

Mathematics ◽  
2021 ◽  
Vol 9 (15) ◽  
pp. 1733
Author(s):  
Hao Wang ◽  
Yanping Zheng ◽  
Yang Yu
Keyword(s):  
Kalman Filter ◽  
Least Squares ◽  
Unscented Kalman Filter ◽  
Equivalent Circuit Model ◽  
Lithium Ion ◽  
Forgetting Factor ◽  
Soc Estimation ◽  
Online Identification ◽  
Adaptive Forgetting Factor ◽  
Adaptive Forgetting

In order to improve the estimation accuracy of the battery state of charge (SOC) based on the equivalent circuit model, a lithium-ion battery SOC estimation method based on adaptive forgetting factor least squares and unscented Kalman filtering is proposed. The Thevenin equivalent circuit model of the battery is established. Through the simulated annealing optimization algorithm, the forgetting factor is adaptively changed in real-time according to the model demand, and the SOC estimation is realized by combining the least-squares online identification of the adaptive forgetting factor and the unscented Kalman filter. The results show that the terminal voltage error identified by the adaptive forgetting factor least-squares online identification is extremely small; that is, the model parameter identification accuracy is high, and the joint algorithm with the unscented Kalman filter can also achieve a high-precision estimation of SOC.

scholarly journals DASH Adaptation Algorithm Based on Adaptive Forgetting Factor Estimation

2018 ◽  
Vol 20 (5) ◽  
pp. 1224-1232 ◽  
Author(s):  
Miguel Aguayo ◽  
Luis Bellido ◽  
Carlos M. Lentisco ◽  
Encarna Pastor
Keyword(s):  
Forgetting Factor ◽  
Adaptation Algorithm ◽  
Adaptive Forgetting Factor ◽  
Adaptive Forgetting ◽  
Factor Estimation
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