1. Model Based Position Control of Soft Hydraulic Actuators
- Author
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Runciman, Mark, Franco, Enrico, Avery, James, Baena, Ferdinando Rodriguez y, and Mylonas, George
- Subjects
Computer Science - Robotics - Abstract
In this article, we investigate the model based position control of soft hydraulic actuators arranged in an antagonistic pair. A dynamical model of the system is constructed by employing the port-Hamiltonian formulation. A control algorithm is designed with an energy shaping approach which accounts for the pressure dynamics of the fluid. A nonlinear observer is included to compensate the effect of unknown external forces. Simulations demonstrate the effectiveness of the proposed approach, and experiments achieve positioning accuracy of 0.043 mm with a standard deviation of 0.033 mm in the presence of constant external forces up to 1 N., Comment: Final Version of Paper, updated figures and discussion. Accepted for IEEE International Conference on Robotics and Automation ICRA 2023
- Published
- 2023