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Fall 2021 GRASP SFI: “Physics-inspired learning for discontinuous contact dynamics”

October 27, 2021 at 3:00 PM - 4:00 PM
Details
Date: October 27, 2021
Time: 3:00 PM - 4:00 PM
  • Event Tags:
  • Organizer
    General Robotics, Automation, Sensing and Perception (GRASP) Lab
    Venue
    Levine 307 3330 Walnut Street
    Philadelphia
    PA 19104
    Google Map

    *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.