Fall 2021 GRASP SFI: “Physics-inspired learning for discontinuous contact dynamics”
October 27, 2021 at 3:00 PM - 4:00 PM
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Details
Date:
October 27, 2021
Time:
3:00 PM - 4:00 PM
Organizer
General Robotics, Automation, Sensing and Perception (GRASP) Lab
Email:
grasplab@seas.upenn.edu
Website:
View Organizer Website
*This will be a HYBRID Event with in-person attendance in Levine 307 and Virtual attendance via Zoom here…
Frictional contact is the core underlying behavior of robot locomotion and manipulation, and its nearly-discontinuous dynamics make planning and control challenging even when an accurate model of the robot is available. In this talk, I will first present empirical evidence that learning an accurate model in the first place can be confounded by contact, as modern deep learning approaches are not designed to capture this non-smoothness. Second, I will discuss ContactNets, our approach which circumvents this conflict via a smooth, implicit encoding of discontinuity as signed distance functions and contact-frame Jacobians.

