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Contribution Details

Type Conference or Workshop Paper
Scope Discipline-based scholarship
Published in Proceedings Yes
Title A novel mechanism for varying stiffness via changing transmission angle
Organization Unit
Authors
  • Hung Vu Quy
  • Lijin Aryananda
  • Farrukh Iqbal Sheikh
  • Flurin Casanova
  • Rolf Pfeifer
Presentation Type paper
Item Subtype Original Work
Refereed Yes
Status Published in final form
Language
  • English
ISBN 978-1-61284-386-5
Page Range 5076 - 5081
Event Title IEEE International Conference on Robotics and Automation (ICRA), 2011
Event Type conference
Event Location Shanghai, China
Event Start Date May 9 - 2011
Event End Date May 13 - 2011
Publisher IEEE
Abstract Text Compliant actuation contributes enormously in legged locomotion robotics since it is able to alleviate control efforts in improving the robot’s adaptability and energy efficiency. In this paper, we present a novel design of a variable stiffness rotary actuator, called MESTRAN, which was especially targeted to address the limitations in terms of the amount of energy and time required to vary the stiffness of an actuated joint. We have constructed a mechanical model in simulation and a physical prototype. We conducted a series of experiments to validate the performance of the MESTRAN actuator prototype. The results from the simulation and experiments show that MESTRAN allows independent control of stiffness and position of an actuated rotary joint with a large operational range and high speed. The torque-displacement relationship is close to linear. Lastly, the MESTRAN actuator is energy-efficient since a certain stiffness level is maintained without energy input.
Related URLs
Digital Object Identifier 10.1109/ICRA.2011.5980097
Other Identification Number merlin-id:3711
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