Science Applications International Corporation

Jay A Eggert

Ernest E Muenchau

H Bruce MacKay

Daniel J Bozich

John D Hightower

Roy L Eyman

Steven W Braun

An adaptive process control system selectively controls vibrations in a given medium in real time. Unwanted vibrations present at a point being monitored in a given medium are sensed, and the system generates an appropriate offsetting vibration that is applied to the medium at a convenient location, which may be remote from the monitored point. The system includes a vibration sensor, such as one or more accelerometers, that sense both input and output vibrations present within the medium; at least one vibration generator, such as an electromagnetic shaker, that generates appropriate offsetting vibrations that are applied to the medium at one or more appropriate locations; and a neural network controller that controls the vibration generator(s) so as to force the sensed vibration at the monitored point(s) to a desired level. The adaptive vibration cancellation provided by the invention takes place in real time, and without the need to process time-consuming complex mathematical algorithms. A specific embodiment of the neural network controller includes a plurality of 4-layer neural networks configured in an adaptive filtered-x configuration.

Neurocontrolled adaptive process control system

A system and method for data communications using a multiplicity of modulators, each of which accept a data input signal and modulate an optical carrier generated by a single optical energy source and propagated along a fiber optic waveguide. The carrier is modulated by the use of a doped polymer contained in the modulators and maintained in contact with the fiber optic waveguide.

Fiber optic data communication system

Growing community of inventors

San Diego, CA, United States of America

Jay A Eggert