David Seth Rubenstein

US Patent:

20080167768, Jul 10, 2008

Filed:

Jul 9, 2007

Appl. No.:

11/775188

Inventors:

David S. Rubenstein - Falmouth ME, US
Richard H. Akers - Portland ME, US

Assignee:

Marine Motion Control, LLC - Portland ME

International Classification:

G05D 1/08

US Classification:

701 21

Abstract:

A control system architecture and algorithm to manage a gyrostabilization system for a marine craft. The control system may manage other effectors in addition to the gyrostabilization system. The objective of the control system software is to utilize any and all available control authority so as to bring about the desired change in the vessel's dynamic state. This control authority is produced by the gyrostabilization system or a combination of the gyrostabilization system with a number of other potential actuation systems or effectors. The focus of the gyrostabilizer control portion is the control and stabilization of the vessel's roll axis in particular

US Patent:

20100220008, Sep 2, 2010

Filed:

Feb 10, 2010

Appl. No.:

12/703268

Inventors:

Zachariah Conover - Standish ME, US
Michael R. Leathem - Brownfield ME, US
David Rubenstein - Falmouth ME, US

Assignee:

CROSSRATE TECHNOLOGY LLC - Windham ME

International Classification:

G01S 19/46

US Classification:

34235729

Abstract:

A system for, and method of, blending (or integrating) pseudo-range or position measurements and bearing-to-transmitter measurements from an eLORAN or LORAN-C receiver and position (alternatively, pseudo ranges) and velocity (alternatively pseudo-range rate) measurements from a GPS receiver. The described system can also be integrated with additional external positioning systems. In the context of an inertial navigation system (INS) application, this combined GPS/LORAN signal can be employed to provide external positioning solutions, potentially integrated with measurements from devises such as accelerometers, gyroscopes, altimeters, etc. The system includes a GPS signal input, a LORAN signal input, preprocessors for each, and an integrator to combine the two preprocessed signals to estimate errors in the full trajectory variables.