Title
Embedding active force control within the compliant hybrid zero dynamics to achieve stable, fast running on MABEL
Abstract
A mathematical formalism for designing running gaits in bipedal robots with compliance is introduced and subsequently validated experimentally on MABEL, a planar biped that contains springs in its drivetrain. The methods of virtual constraints and hybrid zero dynamics are used to design a time-invariant feedback controller that respects the natural compliance of the open-loop system. In addition, it also enables active force control within the compliant hybrid zero dynamics allowing within-stride adjustments of the effective stance leg stiffness. The proposed control strategy was implemented on and resulted in a kneed-biped running record of 3.06 m/s (10.9 kph or 6.8 mph).
Year
DOI
Venue
2013
10.1177/0278364912473344
I. J. Robotic Res.
Keywords
Field
DocType
bipedal robots,running,hybrid systems,zero dynamics,compliance,force control
Embedding,Feedback controller,Simulation,Control theory,Running record,Control engineering,Planar,Drivetrain,Robot,Hybrid system,Formalism (philosophy of mathematics),Mathematics
Journal
Volume
Issue
ISSN
32
3
0278-3649
Citations 
PageRank 
References 
30
1.25
26
Authors
4
Name
Order
Citations
PageRank
Koushil Sreenath135833.41
Hae-Won Park222611.65
Ioannis Poulakakis350043.01
J. w. Grizzle42188215.15