Adaptive sliding mode observer for estimation of state of charge

This work presents the design of an estimator-based on equivalent circuit for the state of charge of battery in order to some batteries behavior. In order to achieve the goal we present in the first stage the different batteries and some equivalents circuits treated in literature. In the second stage we design the Adaptive Sliding Mode Observer-based (ASMO) on a third order state space mode. two phases is considered: in the first one we identify the parameters of the equivalent circuit chosen, the second one treat the ASMO design taking into a count the variation of capacitor and an adaptation law is considered for this. The ASMO robust observers are developed and compared in some simulations to emphasize the observer performance. (C) 2013 The Authors. Published by Elsevier Ltd.