Title
Quadrupedal locomotion using trajectory optimization and hierarchical whole body control.
Abstract
Quadrupedal locomotion can be described as a constrained optimization problem that is very hard to solve due to the high dimensional, nonlinear and non-smooth system dynamics. In this paper, we propose a formulation that can be solved within few seconds using sequential quadratic programming. This method considers only a simplified model that just sufficiently represents the system dynamics. The output is a very coarse plan, which can be accurately and robustly followed on a real system using hierarchical whole-body control combined with inverted pendulum-based reactive stepping. Using the fully torque controllable quadrupedal robot ANYmal, we present successful experiments for walking, trotting, and gait transitions even under substantial external disturbances.
Year
DOI
Venue
2017
10.1109/icra.2017.7989557
ICRA
Field
DocType
Volume
Inverted pendulum,Nonlinear system,Torque,Trajectory optimization,Control theory,Control engineering,System dynamics,Engineering,Sequential quadratic programming,Robot,Trajectory
Conference
2017
Issue
Citations 
PageRank 
1
0
0.34
References 
Authors
12
5
Name
Order
Citations
PageRank
Christian Gehring118013.79
C. Dario Bellicoso2273.65
Peter Fankhauser317114.88
Stelian Coros486256.47
Marco Hutter546058.00