Title
Optimizing walking controllers for uncertain inputs and environments
Abstract
We introduce methods for optimizing physics-based walking controllers for robustness to uncertainty. Many unknown factors, such as external forces, control torques, and user control inputs, cannot be known in advance and must be treated as uncertain. These variables are represented with probability distributions, and a return function scores the desirability of a single motion. Controller optimization entails maximizing the expected value of the return, which is computed by Monte Carlo methods. We demonstrate examples with different sources of uncertainty and task constraints. Optimizing control strategies under uncertainty increases robustness and produces natural variations in style.
Year
DOI
Venue
2010
10.1145/1833349.1778810
ACM Trans. Graph.
Keywords
Field
DocType
probability distribution,monte carlo method,constraint optimization,optimization
Control theory,Monte Carlo method,Mathematical optimization,Torque,User control,Computer science,Control theory,Robustness (computer science),Human motion,Probability distribution,Expected value
Journal
Volume
Issue
ISSN
29
4
0730-0301
Citations 
PageRank 
References 
48
3.10
21
Authors
3
Name
Order
Citations
PageRank
Jack M. Wang172833.36
David J. Fleet25236550.74
Aaron Hertzmann36002352.67