Global sensitivity analysis on the torque accuracy of the powertrain in electric vehicles

  • Electric drive systems are increasingly used in automobiles. However, the combination of comfort, dynamics and safety requirements places high demands on the torque accuracy. The complex interplay of battery, inverter and electrical machine causes a lot of system uncertainties based on parameter fluctuations and measurement errors that influence the system performance. In this paper these influences on the closed loop torque control are analyzed and quantified using a variance based sensitivity analysis. The method enables to connect the variance of the torque accuracy with the parameter uncertainties causing this variance. Moreover, it quantifies the influences of the parameters independent of the complexity of the analyzed system. In addition, two methods to ensure convergence of the estimated variance based sensitivity measures are proposed. The results of the analysis are presented for 19 static working points of an battery electric drive system.

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Author:Matthias Braband, Michael Adams, Andreas Wilhelmi, Matthias Scherer
Parent Title (English):IFAC-PapersOnLine
Document Type:Article (specialist journals)
Date of OPUS upload:2022/09/03
Year of first Publication:2020
Publishing University:Hochschule Trier
Release Date:2022/09/05
Tag:BEV; Monte Carlo simulation; control systems; electrical drive; electromobility; sensitivity analysis
GND Keyword:Elektromobilität; Monte-Carlo-Simulation; Elektroantrieb
Page Number:6
First Page:14067
Last Page:14072
Departments:FB Technik
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 60 Technik
Licence (German):License LogoCreative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International