Sensitivity of balancing in legged systems under torque constraint variations

Carlos Gonzalez, Carlotta Mummolo, Joo Hyun Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The balancing capabilities of a legged system can be influenced by several properties of the system itself, for instance, the strength of joint motors in a robot or muscle strength in living systems. In this work, the changes in the balancing capabilities of a legged system are evaluated as the joint actuator torque limits of the system change. The legged system is modeled with an inverted pendulum model with an actuated ankle and a finite foot size. The effect of variations of the ankle torque limits on the system balance stability is quantified through the local properties of Lagrange multipliers in optimization theory and are validated through numerical experiments. With the proposed method, the information on the balance stability boundary of a legged system is used to predict the balance stability characteristics of the system with altered joint torque limits, hence providing quantifiable guidelines to the design of such systems.

Original languageEnglish (US)
Title of host publication42nd Mechanisms and Robotics Conference
PublisherAmerican Society of Mechanical Engineers (ASME)
Volume5B-2018
ISBN (Electronic)9780791851814
DOIs
StatePublished - Jan 1 2018
EventASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2018 - Quebec City, Canada
Duration: Aug 26 2018Aug 29 2018

Other

OtherASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2018
CountryCanada
CityQuebec City
Period8/26/188/29/18

Fingerprint

Balancing
Torque
Lagrange multipliers
Pendulums
Muscle
Actuators
Robots
Living Systems
Optimization Theory
Inverted Pendulum
Experiments
Local Properties
Actuator
Robot
Numerical Experiment
Predict

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Modeling and Simulation

Cite this

Gonzalez, C., Mummolo, C., & Kim, J. H. (2018). Sensitivity of balancing in legged systems under torque constraint variations. In 42nd Mechanisms and Robotics Conference (Vol. 5B-2018). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/DETC2018-86063

Sensitivity of balancing in legged systems under torque constraint variations. / Gonzalez, Carlos; Mummolo, Carlotta; Kim, Joo Hyun.

42nd Mechanisms and Robotics Conference. Vol. 5B-2018 American Society of Mechanical Engineers (ASME), 2018.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Gonzalez, C, Mummolo, C & Kim, JH 2018, Sensitivity of balancing in legged systems under torque constraint variations. in 42nd Mechanisms and Robotics Conference. vol. 5B-2018, American Society of Mechanical Engineers (ASME), ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2018, Quebec City, Canada, 8/26/18. https://doi.org/10.1115/DETC2018-86063
Gonzalez C, Mummolo C, Kim JH. Sensitivity of balancing in legged systems under torque constraint variations. In 42nd Mechanisms and Robotics Conference. Vol. 5B-2018. American Society of Mechanical Engineers (ASME). 2018 https://doi.org/10.1115/DETC2018-86063
Gonzalez, Carlos ; Mummolo, Carlotta ; Kim, Joo Hyun. / Sensitivity of balancing in legged systems under torque constraint variations. 42nd Mechanisms and Robotics Conference. Vol. 5B-2018 American Society of Mechanical Engineers (ASME), 2018.
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