Reaction mass acceleration feedback device

Details Reaction mass acceleration feedback device Reaction mass acceleration feedback device

1985-07-29

1987-11-10

Jordan, Charles T.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Vibrator-type transmitter

181113, 181119, 181121, H04R 2300

Patent

active

047062312

ABSTRACT:
An improvement for the drive control system of a vibratory sound source used in seismic exploration comprising apparatus for generating a feedback signal proportional to the instantaneous acceleration of the reaction mass structure of the sound source's hydraulic drive system. Degenerative feedback of the signal so developed is used to reduce distortion of the vibratory seismic signal imparted into the earth.

REFERENCES:
patent: 3208550 (1965-09-01), Castanet et al.
patent: 3216525 (1965-09-01), Fail, et al.
patent: 3516510 (1970-06-01), Coburn et al.
patent: 4049077 (1977-12-01), Mifsud
patent: 4184144 (1980-01-01), Rickenbacker
Distefano et al., Theory and Problems of Feedback and Control Systems, McGraw-Hill, Inc., .RTM.1967, p. 295.

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