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:
May. 23, 2006
Filed:
Aug. 12, 2004
Giuseppe Maiocchi, Capiago Intimiano, IT;
Roberto Oboe, Vicenza, IT;
Federico Marcassa, Mogliano Veneto, IT;
Michele Boscolo, Chioggia, IT;
Giuseppe Maiocchi, Capiago Intimiano, IT;
Roberto Oboe, Vicenza, IT;
Federico Marcassa, Mogliano Veneto, IT;
Michele Boscolo, Chioggia, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
A method for estimating resistance of a DC motor for positioning read/write heads of a data storage disk is provided. The DC motor is controlled in an open-loop voltage mode through a motor controller input with a first signal for compensating positioning of the read/write heads onto the data storage disk. The first signal is generated based upon a position error signal representing a difference between a position of the read/write heads and a center of a track to be read. The method includes monitoring the first signal during a read operation of data being stored on the data storage disk, and estimating the resistance based upon spectral components of the first signal.