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:
Dec. 19, 1989
Filed:
Oct. 26, 1987
Bernard Friedland, West Orange, NJ (US);
Kearfott Guidance and Navigation Corp., Little Falls, NJ (US);
Abstract
A system for measuring the position of a vibrating object relative to a reference point, such as the block of a ring-laser gyroscope relative to its case, uses a continuous velocity sensor that is noisy and subject to drift and a precise position crossing detector. A mixer-filter combines the data from the two sensors so that the capability of the velocity sensor to provide a continuous reading of position is exploited to interpolate data between the instants that the position crossing detector indicates that the object position crosses through zero. The mixer-filter is implemented in the form of an extended Kalman filter which operates upon the inputs to provide an optimum estimate of the position of the vibrating object.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile