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. 16, 2014
Filed:
Jun. 28, 2013
Panasonic Corporation, Osaka, JP;
Akira Kawabe, Osaka, JP;
Kouji Okamoto, Osaka, JP;
Fumiaki Senoue, Osaka, JP;
Hitoshi Kobayashi, Osaka, JP;
Kiyotaka Tanimoto, Kanagawa, JP;
Hideki Nishino, Osaka, JP;
Shiro Sakiyama, Kyoto, JP;
Takashi Morie, Osaka, JP;
Akio Yokoyama, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A actuator driver includes a digital filter configured to perform phase compensation of a digital torque command signal using a fed-back digital signal; a digital PWM generator configured to generate a plurality of pulse-width modulated PWM control signals in response to an output of the digital filter; at least one H bridge configured to select and output a first or second terminal voltage in response to the plurality of PWM control signals; first and second continuous time ΔΣ A/D converters configured to convert the first and second terminal voltages from analog to digital, respectively; and a feed-back filter configured to decimate outputs of the first and second continuous time ΔΣ A/D converters to feed back the digital signal to the digital filter.