Patents by Inventor Andrea Di Ruzza

Andrea Di Ruzza has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System and method for determining the start position of a motor
    Patent number: 8704479
    Abstract: A system and method for determining the start position of a motor. According to an embodiment, a voltage pulse signal may be generated across a pair of windings in a motor. A current response signal will be generated and based upon the position of the motor, the response signal will be greater in one pulse signal polarity as opposed to an opposite pulse signal polarity. The response signal may be compared for s specific duration of time or until a specific integration threshold has been reached. Further, the response signal may be converted into a digital signal such that a sigma-delta circuit may smooth out glitches more easily. In this manner, the position of the motor may be determined to within 60 electrical degrees during a startup.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: April 22, 2014
    Assignees: STMicroelectronics, Inc., STMicroelectronics S.r.l.
    Inventors: Frederic Bonvin, Davide Betta, Agostino Mirabelli, Andrea Di Ruzza
  • SYSTEM AND METHOD FOR DETERMINING THE START POSITION OF A MOTOR
    Publication number: 20110109255
    Abstract: A system and method for determining the start position of a motor. According to an embodiment, a voltage pulse signal may be generated across a pair of windings in a motor. A current response signal will be generated and based upon the position of the motor, the response signal will be greater in one pulse signal polarity as opposed to an opposite pulse signal polarity. The response signal may be compared for s specific duration of time or until a specific integration threshold has been reached. Further, the response signal may be converted into a digital signal such that a sigma-delta circuit may smooth out glitches more easily. In this manner, the position of the motor may be determined to within 60 electrical degrees during a startup.
    Type: Application
    Filed: November 8, 2010
    Publication date: May 12, 2011
    Applicants: STMicroelectronics, Inc., STMicroelectronics S.r.l.
    Inventors: Frederic BONVIN, Davide Betta, Agostino Mirabelli, Andrea Di Ruzza