2026 SMART PROTOTYPES SUMMIT

This article describes the integration of real steering and braking systems into VI-grade driving simulators of Mercedes-AMG using Hardware-in-the-Loop (HiL) approaches. By combining MXsteerHil and MXbrakeHiL, an enhanced and highly realistic driving experience is achieved throughout the entire development process. The systems are incorporated into the simulator cockpit via an IODB-based interface, which links the feedback units for steering and braking to the test rig. This enables the reproduction of a precise and authentic steering feel, directly based on the ECU functions of the real steering system. Additionally, the MXbrakeHiL extends the virtual development environment to include realistic pedal and brake pressure behaviour. The increased immersion improves the quality of subjective assessments, accelerates development processes and enables a higher maturity level of chassis and function tuning. This empowers Mercedes AMG to improve systems before physical vehicle become available but also as a cost efficient alternative during prototype testing.