Title: A new suitable feature selection and regression procedure for lithium-ion battery prognostics
Authors: Jaouher Ben Ali; Lofi Saidi
Addresses: Université de Tunis, ENSIT, LR13ES03 SIME, 1008, Montfleury, Tunisia ' Université de Tunis, ENSIT, LR13ES03 SIME, 1008, Montfleury, Tunisia
Abstract: The accurate prediction of lithium-ion battery Remaining Useful Life (RUL) is indispensable for safe and lifetime-optimised operation. Thereby, the monitoring of this vital component is very necessary for planning repair work and minimising unexpected electricity outage. However, the study and the investigation of internal battery parameters show several value changes within the battery lifetime and it is highly influenced by environmental and load conditions. Consequently, this paper presents a new prognostic method for online battery monitoring based on isometric feature mapping technique (ISOMAP) and incremental support vector regression (ISVR). ISOMAP is used to reduce some features extracted from lithium-ion batteries, with different health states, in both modes of charge and discharge, and ISVR is used to regress online the selected feature. Experimental results show that the proposed methodology provides a new suitable trend parameter for battery RUL prediction.
Keywords: ISOMAP; ISVR; Li-ion battery; PHM; RUL.
International Journal of Computer Applications in Technology, 2018 Vol.58 No.2, pp.102 - 115
Received: 13 Mar 2017
Accepted: 13 Jul 2017
Published online: 07 Sep 2018 *