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Implementing Regularized Predictive Control for Simultaneous Real-Time Footstep and Ground Reaction Force Optimization
Name
HardwareRPC.pdf
Description
Accepted version
Size
2.28 MB
Format
Adobe PDF
Checksum (MD5)
09362e96cad2ecd92293a079ff0ba3f2
Author(s)
Bledt, Gerardo
Kim, Sangbae
Date Issued
November 2019
Journal
IEEE International Conference on Intelligent Robots and Systems
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Bledt, Gerardo and Kim, Sangbae. 2019. "Implementing Regularized Predictive Control for Simultaneous Real-Time Footstep and Ground Reaction Force Optimization." IEEE International Conference on Intelligent Robots and Systems.
Version
Author's final manuscript
Abstract
© 2019 IEEE. This work presents a successful implementation of a nonlinear optimization-based Regularized Predictive Control (RPC) for legged locomotion on the MIT Cheetah 3 robot platform. Footstep placements and ground reaction forces at the contact feet are simultaneously solved for over a prediction horizon in real-time. Often in academic literature not enough attention is given to the implementation details that make the theory work in practice and many times it is precisely these details that end up being critical to the success or failure of the theory in real world applications. Nonlinear optimization for real-time legged locomotion control in particular is one of the techniques that has shown promise, but falls short when implemented on hardware systems subjected to computation limits and undesirable local minima. We discuss various algorithms and techniques developed to overcome some of the challenges faced when implementing nonlinear optimization-based controllers for dynamic legged locomotion.
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
10.1109/IROS40897.2019.8968031
