Optimization of integrated chassis controller

Design Requirements
  • Minimize the following under double lane change and fishhook conditions
    – Yaw rate and target profile discrepancy
    – Fluctuation of vehicle side slip angle
  • Maintain fluctuations of pitch and roll rate
Design Problem Formulation
  • Design variables  (8)
    AFS & ESC controller parameters (4)
    AS controller parameter (4)
  • Objectives (4)
    Yaw Rate & Side Slip Angle Fluctuation at Double Lane Change (2)
    Yaw Rate & Side Slip Angle Fluctuation at Fishhook (2)
  • Constraints (4)
    Fluctuations of Pitch & Roll Rates at Double Lane Change (2)
    Fluctuations of Pitch & Roll Rates at Fishhook (2)
Simulation and Design Software
  • Simulation : CarSim, Simulink
  • Design : PIAnO
Design Optimization Process
  • Establish automation and perform design optimization using an optimizer
Optimization Result
  • Minimized objectives while satisfying all constraints
  • Controller calibration time using simulations reduced by 40%