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TECHNICAL PAPERS

Land Vehicle Roll/Yaw Product of Inertia Measurement

[+] Author and Article Information
N. J. Durisek, J. P. Chrstos, D. A. Guenther

Mechanical Engineering Department, The Ohio State University, Columbus, OH 43210-1189

G. J. Heydinger

Vehicle Dynamics Division, S.E.A., Inc., Columbus, OH 43085

J. Dyn. Sys., Meas., Control 119(2), 212-216 (Jun 01, 1997) (5 pages) doi:10.1115/1.2801235 History: Received April 15, 1994; Online December 03, 2007

Abstract

This paper focuses on the measurement of the roll/yaw product of inertia of a vehicle and describes a four-degree-of-freedom lumped-parameter ADAMS model used to simulate the test configuration. The measurement is performed by oscillating the vehicle in yaw and monitoring the resulting yaw acceleration and roll torque. The product of inertia is calculated from equations representing the motion of a rigid body relative to a nonmoving reference frame modified to accommodate for the misalignment of the vehicle center of gravity and the test apparatus yaw axis, and to approximate the compliant behavior between the test device and vehicle. The effects of the vehicle center of gravity misalignment from the test apparatus’ yaw axis and the compliance between the test vehicle and test device are studied. The measurement uncertainty is found using the law of propagation of uncertainty.

Copyright © 1997 by The American Society of Mechanical Engineers
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