Title
Estimating The Center Of Mass And The Angular Momentum Derivative For Legged Locomotion-A Recursive Approach
Abstract
Estimating the center of mass position and the angular momentum derivative of legged systems is essential for both controlling legged robots and analyzing human motion. In this letter, a novel recursive approach to concurrently and accurately estimate these two quantities together is introduced. The proposed method employs kinetic and kinematic measurements from classic sensors available in robotics and biomechanics, to effectively exploit the accuracy of each measurement in the spectral domain. The soundness of the proposed approach is first validated on a simulated humanoid robot, where ground truth data are available, against an extend Kalman filter. The results demonstrate that the proposed method reduces the estimation error on the center of mass position with regard to kinematic estimation alone, whereas at the same time, it provides an accurate estimation of the derivative of angular momentum. Finally, the effectiveness of the proposed method is illustrated on real measurements, obtained from walking experiments with the HRP-2 humanoid robot.
Year
DOI
Venue
2019
10.1109/LRA.2019.2931200
IEEE ROBOTICS AND AUTOMATION LETTERS
Keywords
DocType
Volume
Humanoid and bipedal locomotion, humanoid robots
Journal
4
Issue
ISSN
Citations 
4
2377-3766
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
François Bailly100.68
Justin Carpentier2329.16
Mehdi Benallegue33010.89
Bruno Watier402.03
Philippe Souères532343.63