Numerical Simulation Analysis of an Oversteer In-Wheel Small Electric Vehicle Integrated with Four-Wheel Drive and Independent Steering

Similar to conventional vehicle, most in-wheel small electric vehicles (EVs) that exist today are designed with understeer (US) characteristic. They are safer on the road but possess poor cornering performance. With recent in-wheel motor and steer-by wire technology, high cornering performance vehicle does not limit to sport or racing cars. The authors believe that oversteer (OS) design approach for in-wheel small EV can increase the steering performance of the vehicle. However, one disadvantage is that OS vehicle has a stability limit velocity. In this paper, the authors proposed a Four-Wheel Drive and Independent Steering (4WDIS) for in-wheel small EV with OS characteristic. The aim of implementing 4WDIS is to develop a high steer controllability and stability of the EV at any velocity. This paper analyses the performance of OS in-wheel small EV with 4WDIS by using numerical simulation. Two cornering conditions were simulated which are (1) steady-state cornering at below critical velocity and (2) steady-state cornering over critical velocity. The objective of the simulation is to understand the behavior of OS in-wheel small EV and the advantages of implementing the 4WDIS. The results show that an in-wheel small EV can achieve high cornering performance at low speed while maintaining stability at high speed.

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  • Supplemental Notes:
    • © 2016 Muhammad Izhar Ishak et al.
  • Authors:
    • Ishak, Muhammad Izhar
    • Ogino, Hirohiko
    • Yamamoto, Yoshio
  • Publication Date: 2016


  • English

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  • Accession Number: 01633990
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 1 2017 9:37AM