Very High Frequency Interpolation for Direct Torque Control
Rafael Kourdis, Maciej Stępień, Jérôme Manhes, Nicolas Mansard, Steve Tonneau, Philippe Souères, Thomas Flayols
Published: 2025/9/29
Abstract
Torque control enables agile and robust robot motion, but deployment is often hindered by instability and hardware limits. Here, we present a novel solution to execute whole-body linear feedback at up to 40 kHz on open-source hardware. We use this to interpolate non-linear schemes during real-world execution, such as inverse dynamics and learned torque policies. Our results show that by stabilizing torque controllers, high-frequency linear feedback could be an effective route towards unlocking the potential of torque-controlled robotics.