Title
T-PFC: A Trajectory-Optimized Perturbation Feedback Control Approach.
Abstract
Traditional stochastic optimal control methods that attempt to obtain an optimal feedback policy for nonlinear systems are computationally intractable. In this paper, we derive a decoupling principle between the open loop plan, and the closed loop feedback gains, that leads to a perturbation feedback control based solution to optimal control problems under action uncertainty, that is near-optimal to the third order. Extensive numerical simulations validate the theory, revealing a wide range of applicability, coping with medium levels of noise. The performance is compared with Nonlinear Model Predictive Control in several difficult robotic planning and control examples that show near identical performance to NMPC while requiring much lesser computational effort. It also leads us to raise the bigger question as to why NMPC should be used in robotic control as opposed to perturbation feedback approaches.
Year
DOI
Venue
2019
10.1109/lra.2019.2926948
international conference on robotics and automation
Field
DocType
Volume
Mathematical optimization,Nonlinear system,Optimal control,Control theory,Model predictive control,Third order,Decoupling (cosmology),Open-loop controller,Mathematics,Trajectory,Stochastic control
Journal
abs/1902.01389
Issue
Citations 
PageRank 
4
0
0.34
References 
Authors
10
2
Name
Order
Citations
PageRank
Karthikeya S. Parunandi101.69
S. Chakravorty212725.20