Patents by Inventor Toshikazu Noda

Toshikazu Noda 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).

  • Method of controlling photovoltaic power generation system
    Patent number: 7042195
    Abstract: A conventional hill climbing method is not capable of tracking a maximum power when a shadow covers a part of a solar cell panel and a plurality of maximal values is thereby developed.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: May 9, 2006
    Assignee: Daihen Corporation
    Inventors: Katsuki Tsunetsugu, Toshikazu Noda
  • Method of controlling photovoltaic power generation system
    Publication number: 20060055366
    Abstract: A conventional hill climbing method is not capable of tracking a maximum power when a shadow covers a part of a solar cell panel and a plurality of maximal values is thereby developed.
    Type: Application
    Filed: September 6, 2005
    Publication date: March 16, 2006
    Applicant: DAIHEN CORPORATION
    Inventors: Katsuki Tsunetsugu, Toshikazu Noda
  • Method and device for servo-controlling DC motor
    Patent number: 6608459
    Abstract: PWM controlling means (4) for inputting PWM signals corresponding to PWM target values to electric power supplier (3) in order to servo-controlling DC motor (2) comprises synchronizing control part (41), PWM computing part (50), selecting part of PWM target value (45) and PWM commanding part (46). The synchronizing control part (41) instructs the commencement of the PWM computation, selection of PWM target value and PWM command allotted to some of the infinitesimal intervals obtained by dividing processing term, on which PWM signals regulating the electric power supplied to the motor (2) are allotted, into n equal parts, and terminates one cycle for a series of the process and/or computation predetermined within one processing term. PWM target values corresponding to plural control target values (DP0, DV0, DT0) are computed in parallel so that the servo-control of motor can be operated in quick response to the change of control mode.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: August 19, 2003
    Assignee: Daihen Corp.
    Inventors: Fumio Kasagami, Toshikazu Noda
  • Method and device for servo-controlling DC motor
    Publication number: 20020177920
    Abstract: PWM controlling means (4) for inputting PWM signals corresponding to PWM target values to electric power supplier (3) in order to servo-controlling DC motor (2) comprises synchronizing control part (41), PWM computing part (50), selecting part of PWM target value (45) and PWM commanding part (46). The synchronizing control part (41) instructs the commencement of the PWM computation, selection of PWM target value and PWM command allotted to some of the infinitesimal intervals obtained by dividing processing term, on which PWM signals regulating the electric power supplied to the motor (2) are allotted, into n equal parts, and terminates one cycle for a series of the process and/or computation predetermined within one processing term. PWM target values corresponding to plural control target values (DP0, DV0, DT0) are computed in parallel so that the servo-control of motor can be operated in quick response to the change of control mode.
    Type: Application
    Filed: December 10, 2001
    Publication date: November 28, 2002
    Inventors: Fumio Kasagami, Toshikazu Noda