Drew A Karnick

7412775, Aug 19, 2008

Aug 3, 2007

11/833398

Drew A. Karnick - Blaine MN, US
Timothy J. Hanson - Plymouth MN, US

Honeywell International Inc. - Morristown NJ

G01C 19/38
G01C 19/02

33324, 33316, 33318

A sensor system and method for determining a relative direction to true north is provided. The system comprises at least one angular rate sensor, such as a MEMS sensor, which has an input axis and a rotation axis. The sensor comprises a motor drive structure, a motor signal output from the motor drive structure, a gyroscope, and a sensor rate output from the gyroscope for a sensor rate signal. A frequency divider is in operative communication with the motor signal output, and a spinning device is coupled to the angular rate sensor. A spinning device motor is coupled to the spinning device and is in operative communication with the frequency divider. The spinning device motor has an axis of rotation that is substantially perpendicular to the input axis of the sensor. The spinning device motor is configured to be driven by a periodic signal from the sensor. A position of the spinning device is synchronized to the periodic signal to generate a spinning device position signal.

8095250, Jan 10, 2012

May 21, 2009

12/470237

Timothy J. Hanson - Plymouth MN, US
Drew A. Karnick - Blaine MN, US

Honeywell International Inc. - Morristown NJ

G05D 1/08

701 4, 701220, 701 23

A method of estimating bias errors for an air vehicle in flight under high spin conditions is provided. The method comprises collecting a first set of data samples at a first time and collecting a second set of data samples at a second time. The first time and the second time occur after deployment of the air vehicle and before canard shock. The first and second sets of data samples comprise roll rate data from at least a first gyroscope and acceleration data from at least a first accelerometer. At least a first estimated accelerometer bias from the first and second sets of data samples is calculated.

20070056370, Mar 15, 2007

Aug 19, 2005

11/161871

Todd Braman - New Brighton MN, US
Drew Karnick - Blaine MN, US
Max Glenn - Chanhassen MN, US
Harlan Curtis - Champlin MN, US

HONEYWELL INTERNATIONAL INC. - Morristown MN

G01P 1/00
G01P 21/00

073514070, 073001380

Methods and systems for controlling the internal dampening of MEMS sensors is provided. In one illustrative embodiment, a MEMS sensor is provide that can be tunable to a desired Q value, and the Q value may be held relatively constant over the expected life of the sensor. The MEMS sensor package may include a chamber that houses a MEMS sensor. An inert gas may be provided in the chamber at a desired or specified pressure, wherein the inert gas may be backfilled into the chamber after the chamber is evacuated. The pressure of the inert gas may be set to achieve a desired Q value.

20070090475, Apr 26, 2007

Oct 5, 2005

11/163117

Drew Karnick - Blaine MN, US
Peter LaFond - Redmond WA, US

HONEYWELL INTERNATIONAL INC. - Morristown NJ

H01L 29/84

257415000

A system for conditioning a sensor die. The sensor die may have a sensor wafer and a substrate wafer anodically bonded together. The sensor die may have an inertial device such as an accelerometer or a gyroscope. The device has a scale factor that may change with a bowing of the sensor die. The die may be bonded at a high temperature to bumps on a surface of a package, but may develop a bow when cooled down to a temperature such as room temperature when the coefficients of thermal expansion of the die and the package are different. The bump material may enter a yield state. The package and the die may be subjected to a high gravity environment to reduce or reverse the bow. After the package is removed from the high gravity environment, the bow may return but at a smaller magnitude when subject to similar conditions.

20100139373, Jun 10, 2010

Feb 18, 2010

12/708074

Todd L. Braman - New Brighton MN, US
Drew A. Karnick - Blaine MN, US
Max C. Glenn - Chanhassen MN, US
Harlan L. Curtis - Champlin MN, US

Honeywell Internationa Inc. - Morristown NJ

G01M 3/20

73 407

Methods and apparatus for a MEMS sensor package are provided. In one embodiment, a MEMS sensor package comprises a MEMS sensor; a sensor body permeable to gas leakage at a first leak rate; a backfill gas that pressurizes the sensor body to a backfill pressure; wherein the backfill pressure provides a dampening of the MEMS sensor; and wherein the backfill pressure is set such than any increase in pressure within the sensor body due to gas leakage will not cause a deviation in a Q value of the MEMS sensor beyond a predefined range for at least a specified design service life for the MEMS sensor package.

20130041618, Feb 14, 2013

Aug 12, 2011

13/208929

William Francis Kraetz - Scottsdale AZ, US
Drew A. Karnick - Blaine MN, US

HONEYWELL INTERNATIONAL INC. - Morristown NJ

G06F 15/00
G01P 15/02

702141

In one embodiment, an inertial device for determining an initial condition reference frame for a body is provided. The inertial device comprises at least one inertial measurement unit, one or more processing devices, and one or more memory devices. The inertial measurement unit provides rotation information along at least one axis to the one or more processing devices. The one or more processing devices uses the rotation information to estimate the current attitude of the body, based on estimates of a total rotation angle from experienced by the body from the beginning of body motion to when the inertial measurement unit initialized.

54408172, Aug 15, 1995

May 19, 1993

8/064225

William S. Watson - Eau Claire WI
Drew A. Karnick - Eau Claire WI

G01C 906

33366

The present invention provides a vertical reference that includes sensors providing signals indicative of angular tilt from the predetermined reference axis and the rate of angular tilt; an integrator to integrate the angular rate signal to provide a dynamic angular tilt signal; a pendulum to provide a signal indicative of angular displacement relative to the predetermined axis; a first amplifier for filtering and amplifying the dynamic angular tilt signal and the angular displacement signal to produce a first amplified signal; a second amplifier for filtering and amplifying the dynamic angular tilt signal and the angular displacement signal to produce a second amplified signal; and a dual input amplifier for combining and amplifying the first and second amplified signals to produce an output signal indicative of vertical reference and attitude. In another embodiment of the present invention a vertical reference apparatus includes a cascaded second-order filter or control loop having a first second-order loop that receives its inputs from the pendulum and the angular rate sensor and a second second-order loop that receives as its inputs the output signal of the first loop and the angular rate sensor. The output of the second loop is provided to a control system for the structure whose orientation is desired to be measured or stabilized.

58027289, Sep 8, 1998

Aug 17, 1995

8/516310

Drew A. Karnick - Eau Claire WI
William S. Watson - Eau Claire WI

Watson Industries, Inc. - Eau Claire WI

G08C 1910

33366

A feedback circuit for generating an output signal from a sensor that makes changing electrical and temperature characteristics of the sensor and any sensing medium irrelevant. The sensor is placed in the forward loop of the circuit to make the output depend on the area of the parallel plates the sensor, not on any electrical or temperature characteristics of the sensor or sensing medium. A liquid filled sensor having parallel conducting plates, one solid and the other being split into two differential plate sections may be used in the forward loop as a liquid level sensor or an inclinometer. Alternative sensors such as inductive sensors may also be used.