Design of a Felid-like Humanoid Foot for Stability Enhancement

Area of Science:

• Robotics
• Biomechanics
• Mechanical Engineering

Background:

• Humanoid robot locomotion relies heavily on foot mechanisms for stability and shock absorption.
• Existing robotic foot designs often struggle with adaptability to diverse ground conditions.

Purpose of the Study:

• To propose and validate a novel bionic foot mechanism for humanoid robots.
• To enhance walking stability and adaptability to different ground surfaces.

Main Methods:

• A novel foot mechanism inspired by feline toes was designed, featuring four bionic modules with soft pads and sharp claws.
• The bionic module's main structure utilizes a four-bar linkage with a slide way and a spring.
• Optimization of the four-bar linkage length and claw posture for soft ground insertion was performed.

Main Results:

• The proposed bionic foot design reduces impact during landing and increases ground contact time.
• The mechanism demonstrates improved adaptability to ground surfaces of varying stiffness.
• Simulations confirmed the validity and effectiveness of the bionic foot mechanism.

Conclusions:

• The feline-inspired bionic foot offers significant improvements in humanoid robot locomotion.
• The design enhances stability, shock absorption, and adaptability, paving the way for more robust robots.