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. 20, 2015
Filed:
Jan. 17, 2013
Panasonic Corporation, Osaka, JP;
Daisuke Sato, Osaka, JP;
Abstract
A motor controller comprises a PWM demodulation processor for restoring speed command value Vr from PWM command signal Si, a rotation control section for generating drive value Dd of a motor according to the speed command value Vr, a power drive section for generating driving voltages Uo, Vo and Wo to energize and drive a motor winding according to the drive value Dd, a rotation speed calculating section for generating detected speed value Vd as an information signal to be transmitted to outside, and a PWM modulation processor for generating PWM information signal Fp pulse-width modulated by detected speed value Vd. The PWM modulation processor outputs the PWM information signal Fp generated in synchronization with the PWM command signal.