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RESEARCH PAPERS: Papers on Production Engineering

On-Line Diagnostics of Rear Axle Transmission Errors

[+] Author and Article Information
V. Milenkovic, S. Shmuter, N. Field

Research, Ford Motor Company, Detroit, Michigan

J. Eng. Ind 106(4), 331-338 (Nov 01, 1984) (8 pages) doi:10.1115/1.3185955 History: Received March 01, 1984; Online July 30, 2009

Abstract

This paper describes a methodology suitable for implementation on the production floor, to perform measurement of gear-induced vibrations in assembled axle carriers outside of a vehicle. A dynamic approach to computerized axle testing is described which has resulted in a machine capable of testing more than 100 axle carriers per hour, while exhibiting 95–98 percent correlation with laboratory measurements. The high resolution of measured conjugate gear error of 1 part in 10,000 in terms of angular velocity variations is achieved. The following three major tasks are addressed in the course of the paper: development of an angular sensor; synthesis of a dynamic drive train; configuration of a data processing system. The dynamic concept of the drive train is chosen to measure the conjugate gear error in the most direct possible manner, as torsional oscillations; to ensure adequate transmissibility for both frequency ranges of interest, mesh and boom; and to provide immunity from extraneous inputs. A real-time signal processing technique is developed, employing a peripheral array processor. Along with a decision of acceptability the machine furnishes, whenever needed, a set of supporting indicators to provide for diagnosis of the faults. An efficient method of modeling a drive train for torsional oscillations, and a computer algorithm for rapid and noise-free conjugate gear order analysis, both of general nature, are also described.

Copyright © 1984 by ASME
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