NDLI: Study of wheel slip and traction forces in differential drive robots and slip avoidance control strategy

Content Provider	IEEE Xplore Digital Library
Author	Torres, E.O.C. Konduri, S. Pagilla, P.R.
Copyright Year	2014
Description	Author affiliation: Sch. of Mech. & Aerosp. Eng., Oklahoma State Univ., Stillwater, OK, USA (Torres, E.O.C.; Konduri, S.; Pagilla, P.R.)
Abstract	The effect of wheel slip in differential drive robots is investigated in this paper. We consider differential drive robots with two driven wheels and ball-type caster wheels that are used to provide balance and support to the mobile robot. The limiting values of traction forces for slip and no slip conditions are dependent on wheel-ground kinetic and static friction coefficients. The traction forces are used to determine the fraction of input torque that provides robot motion and this is used to calculate the actual position of the robot under slip conditions. The traction forces under no slip conditions are used to determine the limiting value of the wheel torque above which the wheel slips. This limiting torque value is used to set a saturation limit for the input torque to avoid slip. Simulations are conducted to evaluate the behavior of the robot during slip and no slip conditions. Experiments are conducted under similar slip and no slip conditions using a custom built differential drive mobile robot with one caster wheel to validate the simulations. Experiments are also conducted with the torque limiting strategy. Results from model simulations and experiments are presented and discussed.
Starting Page	3231
Ending Page	3236
File Size	1942205
Page Count	6
File Format	PDF
ISBN	9781479932726
ISSN	07431619
e-ISBN	9781479932740
DOI	10.1109/ACC.2014.6859308
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-06-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Wheels Mobile robots Torque Robot kinematics Force Friction Nonholonomic systems Mechanical systems/robotics Mechatronics
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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