Motion Control of an Active Seat in Response to Breathing Frequency and its Comfort Evaluation

Key Points

• To enhance comfort in autonomous vehicles during highway cruising by implementing a motion control method based on breathing frequency.
• Proposed a pitch oscillation control technique inspired by breathing phenomena.
• Synchronized vertical vibrations with a frequency ratio of 0.8 relative to the occupant's breathing frequency.
• Monitored heart rate variability to assess the physiological comfort levels.
• Improved high-frequency components of heart rate variability (HF) observed with synchronized active seat control.
• Indicated potential contributions to physiological comfort from breathing-synchronized motion control.