Proposals for improvement of AFS system using HIL & SIL simulation

This paper presents proposals of performance improvement of AFS(Active Front Steer) system. AFS system is a subsystem of UCC(Unified Chassis Control) system which is composed of AFS, ESC(Electronic Stability Control), EAS(Electronic Air Suspension) systems. In this paper, AFS system is focused and proposals for AFS system performance improvement are introduced. First, configurations, functionalities and control algorithms of AFS system are introduced by literature survey & benchmarking test results. Through these results AFS system control algorithm is proposed. And this algorithm is developed and validated using SIL(Software in the loop) simulation. Finally, this AFS control algorithm is validated using HIL(Hardware in the loop) simulator. And concept and configuration of this HIL Simulator is introduced. With this HIL simulator not only AFS system performance but also UCC system performance is evaluated.