CasADi: a software framework for nonlinear optimization and optimal control

JAE Andersson, J Gillis, G Horn, JB Rawlings… - Mathematical …, 2019 - Springer
We present CasADi, an open-source software framework for numerical optimization. CasADi
is a general-purpose tool that can be used to model and solve optimization problems with a …

An efficient acyclic contact planner for multiped robots

S Tonneau, A Del Prete, J Pettré, C Park… - IEEE Transactions …, 2018 - ieeexplore.ieee.org
We present a contact planner for complex legged locomotion tasks: standing up, climbing
stairs using a handrail, crossing rubble, and getting out of a car. The need for such a planner …

Solving constrained trajectory planning problems using biased particle swarm optimization

R Chai, A Tsourdos, A Savvaris… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Constrained trajectory optimization has been a critical component in the development of
advanced guidance and control systems. An improperly planned reference trajectory can be …

Trajectotree: Trajectory optimization meets tree search for planning multi-contact dexterous manipulation

C Chen, P Culbertson, M Lepert… - 2021 IEEE/RSJ …, 2021 - ieeexplore.ieee.org
Dexterous manipulation tasks often require contact switching, where fingers make and break
contact with the object. We propose a method that plans trajectories for dexterous …

A holistic approach to human-supervised humanoid robot operations in extreme environments

M Wonsick, P Long, AÖ Önol, M Wang… - Frontiers in Robotics and …, 2021 - frontiersin.org
Nuclear energy will play a critical role in meeting clean energy targets worldwide. However,
nuclear environments are dangerous for humans to operate in due to the presence of highly …

Hierarchical planning of dynamic movements without scheduled contact sequences

C Mastalli, I Havoutis, M Focchi… - … on Robotics and …, 2016 - ieeexplore.ieee.org
Most animal and human locomotion behaviors for solving complex tasks involve dynamic
motions and rich contact interaction. In fact, complex maneuvers need to consider dynamic …

Contact-implicit trajectory optimization based on a variable smooth contact model and successive convexification

AÖ Önol, P Long, T Padır - 2019 International Conference on …, 2019 - ieeexplore.ieee.org
In this paper, we propose a contact-implicit trajectory optimization (CITO) method based on a
variable smooth contact model (VSCM) and successive convexification (SCvx). The VSCM …

Contact-implicit planning and control for non-prehensile manipulation using state-triggered constraints

M Wang, AÖ Önol, P Long, T Padır - The International Symposium of …, 2022 - Springer
We present a contact-implicit planning approach that can generate contact-interaction
trajectories for non-prehensile manipulation problems without tuning or a tailored initial …

A two-stage trajectory optimization strategy for articulated bodies with unscheduled contact sequences

T Marcucci, M Gabiccini, A Artoni - IEEE Robotics and …, 2016 - ieeexplore.ieee.org
In this letter, we propose a two-stage strategy for optimal control problems of robotic
mechanical systems that proves to be more robust, and yet more efficient, than …

Tuning-free contact-implicit trajectory optimization

AÖ Önol, R Corcodel, P Long… - 2020 IEEE International …, 2020 - ieeexplore.ieee.org
We present a contact-implicit trajectory optimization framework that can plan contact-
interaction trajectories for different robot architectures and tasks using a trivial initial guess …