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:
Mar. 05, 2013
Filed:
May. 13, 2010
Applicants:
Fulvio Giacomo Bagarelli, Cremona, IT;
Vincenzo Marano, Muggiò, IT;
Enrico Poli, Aymavilles, IT;
Inventors:
Assignees:
Dora S.p.A., Aosta, IT;
STMicroelectronics S.R.L., Agrate Brianza (MB), IT;
Primary Examiner:
Int. Cl.
CPC ...
H02P 8/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of driving a stepper motor in a feed-forward voltage mode may include for a desired speed for the stepper motor setting an amplitude of a sinusoidal phase voltage of the stepper motor to be equal to a sum of an expected back-electromotive force (BEMF) amplitude estimated as a function of the desired speed, and a product of a desired phase current amplitude and an estimated absolute value of an impedance of the stepper motor.