Design of an unified chassis controller for rollover prevention, manoeuvrability and lateral stability

Abstract

This paper describes a unified chassis control (UCC) strategy to prevent vehicle rollover and improve both manoeuvrability and lateral stability. Since previous researches on rollover prevention are only focused on the reduction of lateral acceleration, the manoeuvrability and lateral stability cannot be guaranteed. For this reason, it is necessary to design a UCC controller to prevent rollover and improve lateral stability by integrating electronic stability control, active front steering and continuous damping control. This integration is performed through switching among several control modes and a simulation is performed to validate the proposed method. Simulation results indicate that a significant improvement in rollover prevention, manoeuvrability and lateral stability can be expected from the proposed UCC system.

Keywords:

• manoeuvrability
• rollover index
• rollover mitigation control
• vehicle rollover
• vehicle lateral stability
• unified chassis control

Acknowledgements

This work was supported by the corporation MANDO, the second stage of the Brain Korea 21 Project in 2009 and SNU-IAMD.