*3.2.1 ANFIS models performance accuracy analysis*

The performance analysis is made on the information provided by the battery terminal voltage residuals errors. The MATLAB simulation results reveal a battery terminal voltage prediction accuracy for ANFIS Rint-3RC ECM dynamic part model of an absolute residual error less than 0.0 3 volts and greater than 0.04 volts, compared with ARX model of same structure that is situated in the range (0.2, 0.15) volts. The voltage error of OCV(SOC) ANFIS model is very small ranged inside the interval (1.5 10e-4, 1.5 10e-4) volts. For the ANFIS combined structure (ANFIS-ANFIS), the residual error remains in the same range as Rint-3RC ECM dynamic part model, i.e., (0.04, 0.03) volts.
