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Related Experiment Video

Updated: Jun 20, 2026

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

Published on: August 30, 2016

Leg recirculation in horizontal plane locomotion.

A Wickramasuriya¹, J Schmitt

¹Oregon State University, Corvallis, 97331, USA. arunw@engr.orst.edu

Biological Cybernetics

|September 30, 2009

Summary

This study introduces a new leg motion protocol for robotic locomotion, improving stability and adaptability to rough terrain by controlling swing-leg angular velocity. This method enhances gait robustness and stability in legged robots.

Area of Science:

Robotics
Biomechanics
Locomotion Analysis

Background:

Locomotion in legged robots often relies on simplified models.
Understanding insect locomotion provides insights for improving robotic gait.
Gait stability and robustness are critical for navigating complex environments.

Purpose of the Study:

To develop a leg motion protocol for the planar lateral leg spring model of locomotion.
To prescribe swing-leg angular velocity for enhanced gait stability and adaptability.
To investigate the impact of leg angular velocity on gait dynamics and robustness.

Main Methods:

Developed a protocol prescribing leg motion during the swing phase for a planar lateral leg spring model.
Utilized a feedforward control strategy for swing-leg angular velocity.

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Published on: April 13, 2011

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Last Updated: Jun 20, 2026

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

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Studying the Neural Basis of Adaptive Locomotor Behavior in Insects

Studying the Neural Basis of Adaptive Locomotor Behavior in Insects

Published on: April 13, 2011

Analyzed a reduced-order model to assess gait stability and robustness to perturbations.

Compared simulation results with experimental data from running cockroaches.

Main Results:

Prescribing angular velocity yielded natural variations in leg touch-down angle in response to perturbations.
Gait stability and robustness strongly depend on leg angular velocity at touch-down.
A modified protocol, matching experimental cockroach data, significantly improved the basin of stability.

Conclusions:

Feedforward control of swing-leg angular velocity is a viable strategy for enhancing robotic locomotion.
Modifications based on biological data are crucial for optimizing gait performance and stability.
The developed protocol offers improved robustness and adaptability for legged robots operating in challenging terrains.