Seismic source vibrator having self tuning controller

Details Seismic source vibrator having self tuning controller Seismic source vibrator having self tuning controller

1984-03-05

1987-01-13

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Signal transducers

Vibrator-type transmitter

181401, 324 83FE, G01V 100

Patent

active

046370021

ABSTRACT:
A self-tuning controller, for dynamic control of the servo valve and the actuator (mass, column, pad) of a seismic source vibrator, includes a state variable feedback network associated with a model reference for the servo valve and the actuator. The model references provide controllable states of the servo valve and actuator that would otherwise be inaccessible. The models run on-line and have the same inputs as the servo valve and the actuator. A Kalman filter provides a full order observer that compares accessible states between each model and the servo valve and actuator, and updates the model states in dependence on the difference.

REFERENCES:
Kalman et al., "New Results in Linear Filtering . . . ," Journal of Basic Engineering, 3/61, pp. 95-108.
Luenberger, D. C., "An Introduction to Observers," IEEE Transactions on Automatic Control, vol. Ac-16, #16, 12/71, pp. 596-602.

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