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Height Varying Humanoid Robot Walking through Model Predictive Control

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Autor(es):
Silva, Caroline C. D. ; Maximo, Marcos R. O. A. ; Goes, Luiz C. S. ; Colombini, EL ; Junior, PLJD ; Garcia, LTD ; Goncalves, LMG ; Sa, STD ; Estrada, EDD ; Botelho, SSD
Número total de Autores: 10
Tipo de documento: Artigo Científico
Fonte: 2019 LATIN AMERICAN ROBOTICS SYMPOSIUM, 2019 BRAZILIAN SYMPOSIUM ON ROBOTICS (SBR) AND 2019 WORKSHOP ON ROBOTICS IN EDUCATION (LARS-SBR-WRE 2019); v. N/A, p. 6-pg., 2019-01-01.
Resumo

The present paper proposes the application of Model Predictive Control (MPC) to the bipedal walking problem. Classically, bipedal robots maintains constant height of the center of mass (CoM) during walking, since this constraint makes the underlying dynamical system linear. Nevertheless, researches show that vertical CoM motion is one of many mechanisms humans use to reduce energetic cost during walking. In this paper, we show that if the height is modified through a predefined function, the system becomes linear time-varying, which may be handled by MPC techniques. By means of simulations, the stability behavior of the robot is verified. Finally, a high-fidelity simulation model based on the Gazebo simulator is used to validate the energetic cost reduction due to the vertical CoM motion. (AU)

Processo FAPESP: 16/03647-3 - Desenvolvimento e Implementação de Algoritmos de Caminhada para Robôs Humanoides
Beneficiário:Rubens Junqueira Magalhães Afonso
Modalidade de apoio: Auxílio à Pesquisa - Regular