Animal Motions on Legged Robots Using Nonlinear Model Predictive Control - IROS 2022 Presentation

Presentation for the IROS 2022 paper "Animal Motions on Legged Robots Using Nonlinear Model Predictive Control" by Dongho Kang, Flavio De Vincenti, Naomi C. Adam, and Stelian Coros. 2022 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2022): https://iros2022.org/ Abstract: This work presents a motion capture-driven locomotion controller for quadrupedal robots that replicates the non-periodic footsteps and subtle body movement of animal motions. We adopt a nonlinear model predictive control (NMPC) formulation that generates optimal base trajectories and stepping locations. By optimizing both footholds and base trajectories, our controller effectively tracks retargeted animal motions with natural body movements and highly irregular strides. We demonstrate our approach with prerecorded animal motion capture data. In simulation and hardware experiments, our motion controller enables quadrupedal robots to robustly reproduce fundamental characteristics of a target animal motion regardless of the significant morphological disparity. Project website: https://donghok.me/animal-motions-on-... Computational Robotics Lab: http://crl.ethz.ch   / computationalr2   Dongho Kang: https://donghok.me/    / donghokang     / eastskykang   Stelian Coros: http://crl.ethz.ch/coros.html