Article contents
Bi-Level Adaptive Computed-Current Impedance Controller for Electrically Driven Robots
Published online by Cambridge University Press: 28 May 2020
Summary
This paper presents a bi-level adaptive computed-current impedance controller for electrically driven robots. This study aims to reduce calculation complexities by utilizing the electrical equations of actuators, instead of the entire model of the electromechanical system. Moreover, taking the dynamical effects of mechanical parts into account through the current’s feedback, external disturbances are compensated. In order to handle uncertainties, a bi-level optimization problem is formulated to obtain guaranteed stability besides the estimation convergence. An adaptation rule and its optimal tuning gain are achieved. The proposed method is applied to control of a rehabilitation robot to evaluate its performance.
Keywords
- Type
- Articles
- Information
- Copyright
- Copyright © The Author(s), 2020. Published by Cambridge University Press
References
- 6
- Cited by