The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2009
Filed:
Apr. 24, 2007
Applicant:
Donato Cardarelli, Medfield, MA (US);
Inventor:
Donato Cardarelli, Medfield, MA (US);
Assignee:
Milli Sensor Systems + Actuators, West Newton, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01P 9/04 (2006.01); G01C 25/00 (2006.01); G01C 19/00 (2006.01);
U.S. Cl.
CPC ...
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.