Observability Analysis and State Estimation of Lithium-Ion Batteries in the Presence of Sensor Biases

@article{Zhao2017ObservabilityAA,
  title={Observability Analysis and State Estimation of Lithium-Ion Batteries in the Presence of Sensor Biases},
  author={Shi Zhao and Stephen Duncan and David A. Howey},
  journal={IEEE Transactions on Control Systems Technology},
  year={2017},
  volume={25},
  pages={326-333}
}
This brief investigates the observability of one of the most commonly used equivalent circuit models (ECMs) for lithium-ion batteries and presents a method to estimate the state of charge in the presence of sensor biases, highlighting the importance of observability analysis for choosing appropriate state estimation algorithms. Using a differential geometric approach, necessary and sufficient conditions for the nonlinear ECM to be observable are derived and are shown to be different from the… CONTINUE READING

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