Perceptive locomotion through nonlinear model-predictive control

R Grandia, F Jenelten, S Yang… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
Dynamic locomotion in rough terrain requires accurate foot placement, collision avoidance,
and planning of the underactuated dynamics of the system. Reliably optimizing for such …

Dtc: Deep tracking control

F Jenelten, J He, F Farshidian, M Hutter - Science Robotics, 2024 - science.org
Legged locomotion is a complex control problem that requires both accuracy and
robustness to cope with real-world challenges. Legged systems have traditionally been …

Offline motion libraries and online MPC for advanced mobility skills

M Bjelonic, R Grandia, M Geilinger… - … Journal of Robotics …, 2022 - journals.sagepub.com
We describe an optimization-based framework to perform complex locomotion skills for
robots with legs and wheels. The generation of complex motions over a long-time horizon …

TAMOLS: Terrain-aware motion optimization for legged systems

F Jenelten, R Grandia, F Farshidian… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Terrain geometry is, in general, nonsmooth, nonlinear, nonconvex, and, if perceived through
a robot-centric visual unit, appears partially occluded and noisy. This article presents the …

Whole-body mpc and online gait sequence generation for wheeled-legged robots

M Bjelonic, R Grandia, O Harley… - 2021 IEEE/RSJ …, 2021 - ieeexplore.ieee.org
Our paper proposes a model predictive controller as a single-task formulation that
simultaneously optimizes wheel and torso motions. This online joint velocity and ground …

Trajectory optimization for wheeled-legged quadrupedal robots driving in challenging terrain

VS Medeiros, E Jelavic, M Bjelonic… - IEEE Robotics and …, 2020 - ieeexplore.ieee.org
Wheeled-legged robots are an attractive solution for versatile locomotion in challenging
terrain. They combine the speed and efficiency of wheels with the ability of legs to traverse …

Model predictive control with environment adaptation for legged locomotion

N Rathod, A Bratta, M Focchi, M Zanon… - IEEE …, 2021 - ieeexplore.ieee.org
Re-planning in legged locomotion is crucial to track the desired user velocity while adapting
to the terrain and rejecting external disturbances. In this work, we propose and test in …

Lstp: Long short-term motion planning for legged and legged-wheeled systems

E Jelavic, K Qu, F Farshidian… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
This article presents a hybrid motion planning and control approach applicable to various
ground robot types and morphologies. Our two-step approach uses a sampling-based …

Receding-horizon perceptive trajectory optimization for dynamic legged locomotion with learned initialization

O Melon, R Orsolino, D Surovik… - … on Robotics and …, 2021 - ieeexplore.ieee.org
To dynamically traverse challenging terrain, legged robots need to continually perceive and
reason about upcoming features, adjust the locations and timings of future footfalls and …

Real-time trajectory adaptation for quadrupedal locomotion using deep reinforcement learning

S Gangapurwala, M Geisert, R Orsolino… - … on Robotics and …, 2021 - ieeexplore.ieee.org
We present a control architecture for real-time adaptation and tracking of trajectories
generated using a terrain-aware trajectory optimization solver. This approach enables us to …