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:
Oct. 30, 2012
Filed:
Feb. 09, 2009
Colin Lyden, Baltimore, IE;
Javier Calpe-maravilla, Algemesi, ES;
Mark Murphy, Kilmore, IE;
Eoin English, Pallasgreen, IE;
Colin Lyden, Baltimore, IE;
Javier Calpe-Maravilla, Algemesi, ES;
Mark Murphy, Kilmore, IE;
Eoin English, Pallasgreen, IE;
Analog Devices, Inc., Norwood, MA (US);
Abstract
Embodiments of the present invention provide a drive signal for a motor-driven mechanical system whose frequency distribution has zero (or near zero) energy at the expected resonant frequency of the mechanical system. The drive signal may be provided as a pair of steps sufficient to activate movement of the mechanical system and then park the mechanical system at a destination position. The steps are spaced in time so as to have substantially zero energy at an expected resonant frequency fof the mechanical system. The drive signal may be filtered to broaden a zero-energy notch at the expected resonant frequency f.