Vibrator response linearization circuit

Details Vibrator response linearization circuit Vibrator response linearization circuit

1985-08-05

1988-02-09

Kyle, Deborah L.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Vibrator-type transmitter

73664, G01V 1155

Patent

active

047245328

ABSTRACT:
A method and apparatus for driving a seismic hydraulic vibrator in which a conventional sinusoidal drive signal in modified in such a manner as to improve vibrator response parameters. The sinusoidal drive signal is modified such that in the regions of the signal proximate the reference axis, the signal will abruptly pass from one side of the reference axis to the other side of the reference axis. This modification is accomplished by summing a square wave signal with the sinusoidal signal to form a composite drive signal.

REFERENCES:
patent: 3234504 (1966-02-01), Wischmeyer
patent: 3460648 (1969-08-01), Brown et al.
patent: 3502911 (1970-03-01), Lehman
patent: 3815704 (1974-06-01), Eisner
patent: 4516230 (1985-05-01), Goodloe et al.
patent: 4616352 (1986-10-01), Sallas et al.
Paper entitled: "Vibrator Output Power Experiment", by W. E. Lerwill, dated May 4, 1982 at Industrial Vehicles International, Inc., Tulsa, Okla.
"The Amplitude and Phase Response of a Seismic Vibrator", by W. E. Lerwill, presented at the 1982 Meeting of the European Association of Exploration Geophysicists in Istanbul.
"Seismic Sources on Land", by W. E. Lerwill.

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