Antagonistic Impedance Control for Pneumatically Actuated Robot Joints

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OriginalspracheEnglisch
Aufsatznummer7364186
Seiten (von - bis)161-168
Seitenumfang8
FachzeitschriftRobotics and Automation Letters, IEEE
Jahrgang1
Ausgabenummer1
PublikationsstatusVeröffentlicht - 1 Jan. 2016

Abstract

This letter presents a novel joint torque-based impedance controller for antagonistically driven flexible joints actuated by pneumatic cylinders and compares it with the current state of the art. The work targets on transferring soft-robotics control concepts from classical motor-gear-torque sensor setups to pneumatic systems, with the goal of achieving similar performance levels in comparison to this well established technology. A detailed flexible joint model is derived that incorporates the pneumatic and mechanical dynamics of the proposed antagonistic design. This model is used for analyzing model-based control approaches, which in turn are based on reduced order dynamics. The tendon-based joint level impedance controller enables the simultaneous adjustment of closed-loop stiffness and damping. The proposed scheme shows good simulation results for both, position tracking and compliance performance, respectively. Experimentally, an angular position tracking of 7 Hz could be achieved. Also, stable rigid contacts could be established at considerable impact speed.

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Antagonistic Impedance Control for Pneumatically Actuated Robot Joints. / Toedtheide, A.; Lilge, T.; Haddadin, S.
in: Robotics and Automation Letters, IEEE, Jahrgang 1, Nr. 1, 7364186, 01.01.2016, S. 161-168.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Toedtheide, A, Lilge, T & Haddadin, S 2016, 'Antagonistic Impedance Control for Pneumatically Actuated Robot Joints', Robotics and Automation Letters, IEEE, Jg. 1, Nr. 1, 7364186, S. 161-168. https://doi.org/10.1109/LRA.2015.2511663
Toedtheide, A., Lilge, T., & Haddadin, S. (2016). Antagonistic Impedance Control for Pneumatically Actuated Robot Joints. Robotics and Automation Letters, IEEE, 1(1), 161-168. Artikel 7364186. https://doi.org/10.1109/LRA.2015.2511663
Toedtheide A, Lilge T, Haddadin S. Antagonistic Impedance Control for Pneumatically Actuated Robot Joints. Robotics and Automation Letters, IEEE. 2016 Jan 1;1(1):161-168. 7364186. doi: 10.1109/LRA.2015.2511663
Toedtheide, A. ; Lilge, T. ; Haddadin, S. / Antagonistic Impedance Control for Pneumatically Actuated Robot Joints. in: Robotics and Automation Letters, IEEE. 2016 ; Jahrgang 1, Nr. 1. S. 161-168.
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