Evaluation of Combined Energy-Efficient and Stability Strategies Utilising Direct Yaw Moment Control

Abstract

For sustainability reasons it is important to reduce energy consumption during driving. One contributionto energysavings is by AQ1 using proper wheel torque distributions during manoeuvring. An active energy-efficient direct yaw moment control (DYC) for electric vehicles has previously been proposed by the authors, taking the motor efficiency map into consideration. The results show a potential for reduced energy losses during driving, but it might result in stabilityproblems during safety-critical maneuvres. In this work, consequences on stability due to this proposed energy efficient DYC is explored. Also an approach combining DYC both energy-efficiency and stability is proposed. The simulation results show that for the studied case the combination of DYC for energy-efficiency and stability can have an potential to both keep the vehicle safe and save considerable percentage of energy during both non safety-critical and safety-critical driving manoeuvres.

Energy efficiency and stability of electric vehicles utilising direct yaw moment control

“…Therefore, during cornering manoeuvres, including both non-safety-critical parts and safety-critical parts, this work proposes a combination of the DYC for energy-efficiency and a DYC for stability, which tracks the reference yaw rate, and a switching principle, alternating between the DYC for energy-efficiency and the DYC for stability, has been designed to keep the vehicle both energy-efficient and safe. This work is building on the idea first presented in [14]. Here the concept is more thoroughly investigated.…”