Tze Leung Siu

US Patent:

20060265163, Nov 23, 2006

Filed:

Nov 2, 2005

Appl. No.:

11/266584

Inventors:

John Lewis - Bellevue WA, US
William Standing - Kirkland WA, US
Gary Mansouri - Bothell WA, US
Tze Siu - Seattle WA, US
Jari Honkanen - Monroe WA, US

International Classification:

E05F 15/00
G01R 35/00

US Classification:

702085000

Abstract:

A device for driving a plant such as a beam scanner includes a memory, drive-signal generator, and a calibrator. The memory stores data corresponding to the drive signal, and the generator generates the drive signal from the data and couples the drive signal to the plant. The calibrator measures a response of the plant to the drive signal, calculates a difference between the measured response and a corresponding target response, and reduces the difference by altering the drive signal. Such a device can force the output response of the driven plant to equal a target output response, or to be sufficiently close to the target response for a particular application, while the device is operating in an open-loop configuration. Furthermore, while operating in an open-loop configuration, such a device often has a greater stability margin and greater noise immunity than a comparable device that operates in a closed-loop configuration.

US Patent:

20090157239, Jun 18, 2009

Filed:

Dec 17, 2007

Appl. No.:

11/958248

Inventors:

Vincent M. Walton - Federal Way WA, US
Christopher J. Borland - Bellevue WA, US
Tze L. Siu - Seattle WA, US
Kioumars Najmabadi - Clyde Hill WA, US
Edward E. Coleman - Seattle WA, US
David P. Marquis - Mukilteo WA, US
Dianne L. McMullin - Bothell WA, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

G05D 1/00
G05D 1/08
G05D 1/04

US Classification:

701 6, 701 4

Abstract:

A method for vertical gust suppression due to turbulence for an aircraft having at least one of direct lift control surfaces or pitch control surfaces. The method includes sensing atmospheric turbulence, measuring the sensed atmospheric turbulence to generate turbulence data, generating a command based on the turbulence data, and applying the command to aircraft controls to actuate the direct lift control surfaces or the pitch control surfaces based on the turbulence data. Therefore, an aircraft response to the actuation of the direct lift control surfaces or the pitch control surfaces reduces a vertical acceleration, a pitch acceleration, a pitch rate, a pitch attitude or a structural load of the aircraft due to the turbulence. Thus, the method reduces the effects of vertical gusts of wind on the aircraft, improves the comfort level for aircraft passengers and crew, and reduces diversions the aircraft may take to avoid the turbulence.

US Patent:

20160357191, Dec 8, 2016

Filed:

Jun 4, 2015

Appl. No.:

14/730986

Inventors:

- Chicago IL, US
Rafael E. Caicedo - Snohomish WA, US
Christopher D. Dallara - Seattle WA, US
Alexander C. Ho - Seattle WA, US
Kioumars Najmabadi - Clyde Hill WA, US
Tze L. Siu - Seattle WA, US
Paul C. Strefling - Seattle WA, US
Hisako Yamashiro - Seattle WA, US

Assignee:

THE BOEING COMPANY - Chicago IL

International Classification:

G05D 1/08
B64C 13/18

Abstract:

A gust compensation system is configured to adaptively reduce gust loads exerted into an aircraft. The gust compensation system may include a first sensor proximate to a front of the aircraft. The first sensor is configured to output a first signal. A second sensor may be distally located from the front of the aircraft. The second sensor is configured to output a second signal. A gust signal sub-system is configured to receive the first and second signals and generate a gust signal based on analysis of the first and second signals. The gust signal sub-system outputs the gust signal and may modify a load parameter signal in response to the gust signal exceeding a load alleviation threshold.