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:
Aug. 28, 2007
Filed:
Jan. 19, 2005
Michael Thomas Gansler, Candia, NH (US);
Michael Field Kaufman, New Boston, NH (US);
Soundararajan Manthiri, Bedford, NH (US);
David W. Robinson, Manchester, NH (US);
Jason M. Sachs, Goffstown, NH (US);
Michael Thomas Gansler, Candia, NH (US);
Michael Field Kaufman, New Boston, NH (US);
Soundararajan Manthiri, Bedford, NH (US);
David W. Robinson, Manchester, NH (US);
Jason M. Sachs, Goffstown, NH (US);
DEKA Products Limited Partnership, Manchester, NH (US);
Abstract
Methods and apparatus for detecting a sensor angle error in a system in which a measured quantity is determined on the basis of a phase of a signal. A signal derived from the measurement of multiple sensors is ascribed to a vector in a two-dimensional space, and a norm is calculated characterizing that vector. A value is calculated characterizing variation of that norm over a specified period of time and that value is compared with a threshold in order to identify a sensor fault.