Title
Gait Generation using Intrinsically Stable MPC in the Presence of Persistent Disturbances
Abstract
From a control point of view, humanoid gait generation can be seen as a problem of tracking a suitable ZMP trajectory while guaranteeing internal stability. In the presence of disturbances, both these aspects are at risk, and a fall may ultimately occur. In this paper, we extend our previously proposed Intrinsically Stable MPC (IS-MPC) method, which guarantees stable tracking for the unperturbed case, to the case of persistent disturbances. This is achieved by designing a disturbance observer whose estimate is used to set up a modified stability constraint for the QP problem. The method is validated by MATLAB tests as well as dynamic simulations for a NAO humanoid in DART.
Year
DOI
Venue
2019
10.1109/Humanoids43949.2019.9035068
2019 IEEE-RAS 19th International Conference on Humanoid Robots (Humanoids)
Keywords
DocType
ISSN
persistent disturbances,humanoid gait generation,suitable ZMP trajectory,internal stability,IS-MPC,stable tracking,unperturbed case,disturbance observer,modified stability constraint,QP problem,NAO humanoid,intrinsically stable MPC method
Conference
2164-0572
ISBN
Citations 
PageRank 
978-1-5386-7631-8
0
0.34
References 
Authors
8
5
Name
Order
Citations
PageRank
Smaldone Filippo M.100.34
Nicola Scianca2124.75
Modugno Valerio300.34
Leonardo Lanari44311.31
Giuseppe Oriolo51270100.12