公开(公告)号：US20180118292A1

公开(公告)日：2018-05-03

申请号：US15567782

申请日：2016-04-20

Applicant: The Board of Regents for Oklahoma State University

Inventor： KELLY REHM ,  MICHAEL GERALD PUOPOLO

IPC: B62D57/02 ,  B60B3/00 ,  B60B9/28

CPC classification number: B62D57/022 ,  A63H33/005 ,  B60B3/001 ,  B60B3/002 ,  B60B9/28 ,  B60B19/00 ,  B60B19/02 ,  B60B19/04 ,  B60Y2200/40 ,  B60Y2200/80 ,  B62D57/00 ,  B66F3/10

Abstract: An embodiment is developed for a cylindrically shaped, elliptical rolling robot that has the ability to morph its outer surface as it rolls. The morphing actuation alters lengths of the major and minor axes, resulting in a torque imbalance that rolls the robot along faster or brakes its motion. A control scheme is implemented, whereby angular position and horizontal velocity are used as feedback to trigger and define morphing actuation. A goal of the control scheme is to cause the robot to follow a given velocity profile comprised of steps and ramps. Equations of motion for the rolling robot are formulated, which include rolling resistance torque caused by deformation of the outer surface tread. A computer program solves the equations of motion, and resulting plots show that by automatically morphing its shape in a periodic fashion, the rolling robot is able to commence from an initial position, achieve constant average velocity and slow itself.