The nonlinear behavior of automotive powertrains is mainly due to the presence of backlash between engaging components. In particular, during tip-in or tip-out maneuvers, backlash allows the generation of impacts that negatively affect the vehicle NVH performance. Due to the faster response of electric motors with respect to conventional internal combustion engines, this problem is even more critical for electric vehicles. In order to employ numerical optimal control methods for backlash compensation, the system states have to be known. In this paper, an electric powertrain is modeled as a two-mass oscillator with lumped backlash. This model estimates the system states when in no-contact mode while a Kalman filter that relies only on commonly available speed measurements is active in the contact phase. The powertrain model is validated using experimental data collected during vehicle testing and the online estimated half-shaft torque is shown. In addition, simulations are performed to illustrate that the system states can be properly determined with the proposed estimator.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Driveline Backlash and Half-shaft Torque Estimation for Electric Powertrains Control


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    WCX World Congress Experience ; 2018



    Publication date :

    2018-04-03




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Driveline Backlash and Half-shaft Torque Estimation for Electric Powertrains Control

    Guercioni, Guido Ricardo / Galvagno, Enrico / Tota, Antonio et al. | British Library Conference Proceedings | 2018


    Driveline Backlash and Half-shaft Torque Estimation for Electric Powertrains Control

    Guercioni, Guido Ricardo / Galvagno, Enrico / Tota, Antonio et al. | BASE | 2018

    Free access


    Backlash gap position estimation in automotive powertrains

    Lagerberg, Adam / Egardt, Bo S. | Tema Archive | 2003


    A receding horizon sliding control approach for electric powertrains with backlash and flexible half-shafts

    Li, Yutong / Hansen, Andreas / Karl Hedrick, J. et al. | Taylor & Francis Verlag | 2017