TR2021-068

Control of Mechanical Systems via Feedback Linearization Based on Black-Box Gaussian Process Models

    •  Dalla Libera, A., Amadio, F., Nikovski, D.N., Carli, R., Romeres, D., "Control of Mechanical Systems via Feedback Linearization Based on Black-Box Gaussian Process Models", European Control Conference (ECC), DOI: 10.23919/​ECC54610.2021.9654429, June 2021.
      BibTeX TR2021-068 PDF
      • @inproceedings{DallaLibera2021jun,
      • author = {Dalla Libera, Alberto and Amadio, Fabio and Nikovski, Daniel N. and Carli, Ruggero and Romeres, Diego},
      • title = {Control of Mechanical Systems via Feedback Linearization Based on Black-Box Gaussian Process Models},
      • booktitle = {European Control Conference (ECC)},
      • year = 2021,
      • month = jun,
      • publisher = {IEEE},
      • doi = {10.23919/ECC54610.2021.9654429},
      • isbn = {978-9-4638-4236-5},
      • url = {https://www.merl.com/publications/TR2021-068}
      • }
  • MERL Contacts:
  • Research Areas:

    Control, Machine Learning, Robotics

Abstract:

In this paper, we consider the use of black-box Gaussian process (GP) models for trajectory tracking control based on feedback linearization, in the context of mechanical systems. We considered two strategies. The first computes the control input directly by using the GP model, whereas the second computes the input after estimating the individual components of the dynamics. We tested the two strategies on a simulated manipulator with seven degrees of freedom, also varying the GP kernel choice. Results show that the second implementation is more robust w.r.t. the kernel choice and model inaccuracies. Moreover, as regards the choice of kernel, the obtained performance shows that the use of a structured kernel, such as a polynomial kernel, is advantageous, because of its effectiveness with both strategies.

 

  • Related Publication

  •  Dalla Libera, A., Amadio, F., Nikovski, D.N., Carli, R., Romeres, D., "Control of Mechanical Systems via Feedback Linearization Based on Black-Box Gaussian Process Models", arXiv, April 2021.
    BibTeX arXiv
    • @article{DallaLibera2021apr,
    • author = {Dalla Libera, Alberto and Amadio, Fabio and Nikovski, Daniel N. and Carli, Ruggero and Romeres, Diego},
    • title = {Control of Mechanical Systems via Feedback Linearization Based on Black-Box Gaussian Process Models},
    • journal = {arXiv},
    • year = 2021,
    • month = apr,
    • url = {https://arxiv.org/abs/2104.12854}
    • }