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. 02, 2014
Filed:
May. 07, 2007
Jian Shi, Goleta, CA (US);
Chanmin Su, Ventura, CA (US);
Craig Prater, Goleta, CA (US);
Ji MA, Ventura, CA (US);
Jian Shi, Goleta, CA (US);
Chanmin Su, Ventura, CA (US);
Craig Prater, Goleta, CA (US);
Ji Ma, Ventura, CA (US);
Bruker Nano, Inc., Santa Barbara, CA (US);
Abstract
A method of operating a metrology instrument includes generating relative motion between a probe and a sample at a scan frequency using an actuator. The method also includes detecting motion of the actuator using a position sensor that exhibits noise in the detected motion, and controlling the position of the actuator using a feedback loop and a feed forward algorithm. In this embodiment, the controlling step attenuates noise in the actuator position compared to noise exhibited by the position sensor over the scan bandwidth. Scan frequencies up to a third of the first scanner resonance frequency or greater than 300 Hz are possible.