Title
Trajectory Tracking Control of a Flexible Spine Robot, With and Without a Reference Input.
Abstract
The Underactuated Lightweight Tensegrity Robotic Assistive Spine (ULTRA Spine) project is an ongoing effort to develop a flexible, actuated backbone for quadruped robots. In this work, model-predictive control is used to track a trajectory in the robotu0027s state space, in simulation. The state trajectory used here corresponds to a bending motion of the spine, with translations and rotations of the moving vertebrae. Two different controllers are presented in this work: one that does not use a reference input but includes smoothing constrants, and a second one that uses a reference input without smoothing. For the smoothing controller, without reference inputs, the error converges to zero, while the simpler-to-tune controller with an input reference shows small errors but not complete convergence. It is expected that this controller will converge as it is improved further.
Year
Venue
Field
2018
arXiv: Systems and Control
Convergence (routing),Control theory,Control theory,Tensegrity,Smoothing,Underactuation,Robot,State space,Trajectory,Mathematics
DocType
Volume
ISSN
Journal
abs/1808.08309
2017 NASA/ESA Conference on Adaptive Hardware and Systems - Workshop on Structurally Adaptive Tensegrity Robots
Citations 
PageRank 
References 
0
0.34
0
Authors
9