Method and device for measuring the deformation of a rotating sh

Details Method and device for measuring the deformation of a rotating sh Method and device for measuring the deformation of a rotating sh

1986-12-17

1988-08-16

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to torque

73 1R, 73 1C, 7386249, G01L 310, G01L 2500

Patent

active

047635339

ABSTRACT:
The method and apparatus for deriving a calibrated deformation signal from a signal produced by a strain gauge bridge on a rotating shaft involves further strain gauge bridges, one approximating the deformation bridge signal in the absence of torque and another approximating the deformation bridge signal in the presence of a known torque. The signals are all processed by the same entities and the calibrated signal is derived from a straight line plot determined by determined by the latter two signals. In addition, an axial loading of the shaft is detected by a further strain gauge. Control of power input and of power consumed is from the calibrated deformation signal and the axial loading signal.

REFERENCES:
patent: 3535637 (1970-10-01), Goransson
patent: 3877300 (1975-04-01), Ginns
patent: 4535854 (1985-08-01), Gard et al.
Suzuki, et al., "Measuring Shaft Torque During . . . Pump-Turbines", Water Power, vol. 23, No. 1, 6/77, pp. 20-25.

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