System for monitoring torsion damage to a composite line of shap

Details System for monitoring torsion damage to a composite line of shap System for monitoring torsion damage to a composite line of shap

1984-01-20

1986-09-02

Krass, Errol A.

Boots, shoes, and leggings

73577, 73660, 7386227, 364506, 364550, G01M 700, G06F 1520

Patent

active

046099921

ABSTRACT:
First and second devices (8,9) measure the speed of rotation at two widely separated points H and J along a line of shafts, e.g. through a turboalternator unit. Parameters representative of the opposing torque are determined by a third device which is responsive to signals derived from said measured speeds and to a signal representative of the travel of a controlling servomotor (7). Apparatus are provided that determine the torsion damage suffered, if any, on the basis of the signals provided by said first, second and third devices. The system avoids the prior art need to use expensive, high-current transformers, and can also provide more accurate measurement of damage suffered.

REFERENCES:
patent: 4057714 (1977-11-01), Fork et al.
patent: 4110829 (1978-08-01), Boys
patent: 4184205 (1980-01-01), Morrow
patent: 4437163 (1984-03-01), Kurihara et al.
patent: 4488240 (1984-12-01), Kepadia et al.
J. D. Hurley, "Torsional Monitor Equipment for Turbine-Generator Units", vol. 41, Proceedsing of the American Power Conference, 1979, pp. 1163-1169.

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