Donato Janice Cardarelli

US Patent:

6481283, Nov 19, 2002

Filed:

Apr 4, 2000

Appl. No.:

09/542605

Inventors:

Donato Cardarelli - Medfield MA

Assignee:

Milli Sensor Systems Actuators, Inc. - West Newton MA

International Classification:

G01P 1514

US Classification:

7350402, 7350403, 73510

Abstract:

Disclosed is a Coriolis Oscillating Gyroscopic instrument, comprising: a Double Ended Tuning Fork (DETF) having two stems and two tines; a Torque Summing Member (TSM) rigidly coupled to the DETF stems; drives located at least partially on the TSM for vibrating the tines sinusoidally in opposition along a first axis, the tines motion having a constant amplitude, a frequency and a phase; a case; a plurality of flexures connecting the TSM to the case, to allow the TSM and the DETF to rotationally oscillate together relative to the case about a second axis transverse to the first axis; and a sensor and associated instrumentation for resolving rotation of the TSM relative to the case.

US Patent:

6626039, Sep 30, 2003

Filed:

Sep 13, 2000

Appl. No.:

09/660740

Inventors:

Scott G. Adams - Ithaca NY
James Groves - Endicott NY
Donato Cardarelli - Medfield MA
Raymond Carroll - Boxford MA
Charles R. Dauwalter - Newton Highlands MA

Assignee:

MilliSensor Systems and Actuators, Inc. - West Newton MA

International Classification:

G01C 1902

US Classification:

7350404, 7350408, 7350411, 73510, 7351402

Abstract:

An oscillatory gyroscope is described with decoupled drive and sense oscillators and reduced cross-axis sensitivity. The gyroscope is fabricated using a plasma micromachining process on standard silicon wafers. The electrical isolation of the drive and sense functions of the gyroscope, contained within the same micromechanical element, reduce cross-coupling while obtaining high inertial mass and high sensitivity.

US Patent:

6725719, Apr 27, 2004

Filed:

Apr 17, 2003

Appl. No.:

10/417818

Inventors:

Donato Cardarelli - Medford MA

Assignee:

Milli Sensor Systems and Actuators, Inc. - West Newton MA

International Classification:

G01C 1900

US Classification:

7350404

Abstract:

MEMS-Integrated IMUs are possible based on a common substrate that provides a common oscillatory drive for the operation of the gyroscopes and accelerometers. The common substrate becomes the stable member utilized in conventional IMUs. The advantages of the embodiments are smallest size, flexibility in how IMUs are configured, reduced electronics and a single package. MEMS integration also reduces uncertainties due to separately developed instruments based on different fabrication processes, materials, assembly and alignment.

US Patent:

6859751, Feb 22, 2005

Filed:

Dec 17, 2002

Appl. No.:

10/321774

Inventors:

Donato Cardarelli - Medford MA, US

Assignee:

Milli Sensor Systems & Actuators, Inc. - West Newton MA

International Classification:

G01P015/00
G01C019/00

US Classification:

702141, 702145, 7350412

Abstract:

Inertial Measurement Units based on integrated designs to reduce alignment and assembly costs. Integration also leads to performance improvement, increased miniaturization and simplification as well as reduced cost. Also disclosed are gyroscopes and accelerometers that are identical, yet by their mechanization, can be made to act as separate sensors. Miniaturization and simplification is improved by combining instruments that can share a common member. Savings in space and complexity are also possible in the electronics when elements are shared.

US Patent:

6990725, Jan 31, 2006

Filed:

Oct 4, 2002

Appl. No.:

10/265170

Inventors:

Mark D. Fontanella - Wellesley MA, US
Paul Greiff - Wayland MA, US
Donato Cardarelli - Medfield MA, US
Joseph G. Walsh - Brookline MA, US

International Classification:

H01F 7/06

US Classification:

296021, 29604, 29605, 29606, 29829, 156 8911, 156 8912, 156250, 257531, 336176, 336200, 336229, 438238, 438381, 438788, 438792

Abstract:

This invention relates to the fabrication of planar inductive components whereby the design in cross-section describes a conductor surrounded by magnetic material along the length of the conductor; an electrical insulator is placed between the conductor and the magnetic material. Cases also apply where more than one independent conductor is used. The planar form allows integration of inductive components with integrated circuits. These inductive components can be embedded in other materials. They can also be fabricated directly onto parts.

US Patent:

7356922, Apr 15, 2008

Filed:

Apr 25, 2005

Appl. No.:

11/113965

Inventors:

Charles R. Dauwalter - Newton Highlands MA, US
Donato Cardarelli - Medfield MA, US
Paul Greiff - Wayland MA, US

Assignee:

Milli Sensors Systems & Actuators, Inc. - West Newton MA

International Classification:

H05K 3/02
H05K 3/10

US Classification:

29846, 296021, 2960316, 29847, 29853, 310 12, 310 905, 310266, 310268, 438 3, 438 48

Abstract:

Three magnetic substrates are provided, the first substrate forms the rotor and the other two form the outer stator. A series of spaced concentric grooves and spaced spiral grooves are formed in the central region of both faces of the first substrate. A hole is placed at the center of the spiral grooves, and filled with magnetic material. A conductor is then deposited into the spiral grooves, forming a central wheel. A series of spaced serpentine grooves and generally radial grooves are formed on each active face of the other two substrates. A conductor is then deposited into the serpentine grooves, and a magnetic material is deposited into the generally radial grooves. The two outer substrates are then bonded against the first substrate such that the outer end of each magnetic path overlays a filled hole in the first substrate, creating the stator of an axial air gap reluctance motor.

US Patent:

7472596, Jan 6, 2009

Filed:

Jul 26, 2006

Appl. No.:

11/460115

Inventors:

Donato Cardarelli - Medfield MA, US

International Classification:

G01P 15/14

US Classification:

7351415

Abstract:

An accelerometer that lies generally in a plane, for detecting acceleration along an input axis. There is a substrate, a generally planar Servo Member (SM) flexibly coupled to the substrate such that it is capable of oscillatory motion about a servo axis that lies in the plane, a generally planar Torque Summing Member (TSM) coplanar with and flexibly coupled to the SM such that the TSM is capable of rotary motion relative to the SM about an output axis that is in the plane and orthogonal to the servo axis, wherein the TSM is mass-imbalanced relative to the output axis, and a generally planar rotor coplanar with and flexibly coupled to the TSM such that it is capable of rotary oscillatory motion relative to the TSM about a rotor axis that is orthogonal to the plane of the members. There are drives for oscillating the rotor about the rotor axis and for oscillating the SM about the servo axis. Output sensors detect oscillation of the rotor about the rotor axis and of the SM about the servo axis.

US Patent:

7549334, Jun 23, 2009

Filed:

Apr 24, 2007

Appl. No.:

11/739499

Inventors:

Donato Cardarelli - Medfield MA, US

Assignee:

Milli Sensor Systems + Actuators - West Newton MA

International Classification:

G01P 9/04
G01C 25/00
G01C 19/00

US Classification:

7350413, 7350412, 73 177

Abstract:

A system and method for separating bias instability of MEMS inertial instruments such as gyroscopes or accelerometers from the instrument signal, in which the inertial measurement instrument has an input axis and an output signal, and the bias instability has a frequency. The instrument is oscillated about an oscillation axis that is orthogonal to the input axis, at a frequency that is greater than the bias instability frequency. The instrument output signal is detected, and demodulated with a phase-sensitive detection method referenced to the instrument rotation.