Título: | INTEGRATION FRAMEWORK FOR OFFLINE TRAJECTORY OPTIMIZATION AND ONLINE MODEL PREDICTIVE CONTROL FOR LEGGED ROBOTS | ||||||||||||
Autor: |
LEONARDO GARCIA MORAES |
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Colaborador(es): |
MARCO ANTONIO MEGGIOLARO - Orientador VIVIAN SUZANO MEDEIROS - Coorientador |
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Catalogação: | 03/DEZ/2024 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=68697&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=68697&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.68697 | ||||||||||||
Resumo: | |||||||||||||
In the last decade, legged mobile robots have gained notoriety for their
ability to move safely over rough terrain and overcome obstacles such as slopes
and stairs, opening up new applications compared to wheeled mobile robots.
New developments that improve the robustness of trajectory planning and
dynamic control of legged robots are crucial for the advancement of this field.
The aim of this work is to develop a framework based in C++ and ROS
Noetic that integrates offline trajectory optimization for legged robots with
online Model Predictive Control (MPC) while taking into account the elevation
map of the terrain. The trajectory optimization is based on the open-source
library TOWR (Trajectory Optimization for Walking Robots), which employs
a continuous function to represent the map of the terrain. To make it more
generic, an interface was implemented to allow 2.5D elevation maps to be used
as terrain representation. Furthermore, the trajectories generated by TOWR
are provided as references for a MPC implemented based on the open-source
library OCS2. The trajectories optimized by the MPC are then tracked by
a weighted Whole-Body Controller (WBC), which computes the actuation
torques for the robot s joints. The framework is validated in simulations using
the full dynamics of the robot, with different terrain types and under external
disturbance.
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