Reflective control explains scattering and obstacle interaction in lateral undulatory locomotion

Area of Science:

• Biomechanics and Robotics
• Locomotion and Animal Behavior

Background:

• Lateral undulatory locomotion is efficient and adaptable across terrains.
• Limbless animals exhibit scattering behavior around obstacles.

Purpose of the Study:

• To propose a generalized obstacle interaction control for undulatory locomotion.
• To demonstrate the scattering phenomenon and the role of physical intelligence.

Main Methods:

• Introduced a reflective control strategy based on mechanical head redirection.
• Incorporated continuous environmental interaction and exploited physical intelligence.
• Reduced computational cost through the proposed strategy.

Main Results:

• The reflective control strategy effectively demonstrates the scattering phenomenon.
• Scattering arises from mechanical head interaction, not active decision-making.
• The approach enables maneuvering through cluttered and unstructured environments.

Conclusions:

• Physical intelligence is key to obstacle interaction in undulatory locomotion.
• The findings advance understanding of limbless animal mechanics.
• The strategy has potential applications in robotic locomotion.