Adaptive Control Strategies for Interlimb Coordination in Legged Robots: A Review

Area of Science:

• Robotics
• Biomechanics
• Neuroscience

Background:

• Animals exhibit adaptive interlimb coordination during locomotion, crucial for navigating diverse situations.
• The precise mechanisms underlying this biological coordination, involving neural, musculoskeletal, and environmental interactions, are not fully understood.
• Recent interest in adaptation mechanisms has spurred the development of bio-inspired control systems for legged robots, drawing from neurophysiological findings on sensorimotor interactions.

Purpose of the Study:

• To review adaptive interlimb coordination in legged robots.
• To explore factors influencing this coordination, including locomotion speed, environmental conditions, body properties, and task demands.
• To discuss underlying mechanisms, control strategies, and design principles for legged robot control systems.

Main Methods:

• Review of existing literature on adaptive interlimb coordination in legged robots.
• Analysis of factors inducing coordination changes.
• Discussion of characteristic properties like gait hysteresis and time-scale adaptations.

Main Results:

• Adaptive interlimb coordination in legged robots is influenced by locomotion speed, environmental context, body properties, and task.
• Characteristic properties such as gait hysteresis and multi-time-scale adaptations are observed.
• The review highlights the importance of bio-inspired control strategies.

Conclusions:

• Understanding adaptive interlimb coordination is key for developing more versatile legged robots.
• Bio-inspired control systems offer a promising approach for achieving robust locomotion.
• Further research into underlying mechanisms and control strategies will advance legged robot design principles.