Recent research published in the journal “Applied Sciences” delves into the complexities of human postural stabilization in automated vehicles, a topic of increasing importance as we move toward a future where drivers may frequently engage in non-driving tasks. The study, led by Mojtaba Mirakhorlo from the Faculty of Mechanical, Maritime & Materials Engineering at Delft University of Technology, highlights how taking our eyes off the road can lead to discomfort and motion sickness due to impaired postural control.
As automated driving technology advances, passengers will have more opportunities to read, use smartphones, or even work during their journeys. However, this shift poses challenges for maintaining comfort and stability, especially in dynamic driving conditions. The research focuses on a sophisticated multi-segment full-body human model that simulates how the body reacts to various driving scenarios, including vibrations and sudden movements. The findings indicate that effective postural stabilization is crucial for minimizing discomfort, particularly as the vehicle navigates through slaloms and other challenging maneuvers.
Mirakhorlo’s team validated their model by simulating a “sickening drive” scenario, which involved a slalom maneuver at a frequency of 0.2 Hz and an acceleration of 4 m/s². The results showed that visuo-vestibular feedback and muscle spindle responses are vital for stabilizing the head and neck during such movements. “Active leg muscle control at the hips and knees is essential to stabilize the trunk in high-amplitude slalom conditions,” Mirakhorlo noted, emphasizing the intricate relationship between body mechanics and vehicle dynamics.
The implications of this research extend beyond academic interest; they present significant commercial opportunities for the automotive industry. Vehicle manufacturers can leverage these insights to design seats and interiors that enhance passenger comfort, particularly in automated vehicles where traditional driving roles are diminished. The study suggests that advancements in active suspension systems and smoother driving styles can also contribute to a more pleasant ride.
As the industry gears up for the widespread adoption of automated vehicles, understanding human postural control will be crucial in developing technologies that not only improve comfort but also reduce the incidence of motion sickness. This research paves the way for innovative solutions that can enhance the overall passenger experience, making it a valuable asset for companies looking to stay competitive in the evolving automotive landscape.
