Patents by Inventor Junichiro Oga

Junichiro Oga 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).

  • Patent number: 8543239
    Abstract: A robot control apparatus includes: a joint angular velocity estimation unit (115) calculating a plurality of first joint angular accelerations in already executed control cycles by calculating a joint angular acceleration from a joint angle for each control cycle, and estimating a joint angular velocity in a still unexecuted control cycle from the first joint angular accelerations; a velocity determination unit (113) determining whether the estimated joint angular velocity exceeds a maximum velocity; and a suppression velocity calculation unit (114) calculating a suppression joint angular velocity in the still unexecuted control cycle from the estimated joint angular velocity.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: September 24, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Junichiro Oga, Junji Oaki, Hideki Ogawa
  • Patent number: 8155790
    Abstract: A robot control apparatus includes: a drive unit (101) driving an actuator (115) based on a torque command value; a drive torque estimation unit (107) estimating a drive torque from a joint shaft angle; an external torque calculation unit (108) calculating a difference between the estimated drive torque and the torque command value as an external torque; a Jacobian matrix calculation unit (105) calculating a Jacobian matrix based on the joint shaft angle; an external force calculation unit (109) calculating an external force from the Jacobian matrix and the external torque; and a correction amount calculation unit (110) calculating a correction amount from the external force.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: April 10, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Junichiro Oga, Junji Oaki, Hideki Ogawa
  • Publication number: 20110218673
    Abstract: A robot control apparatus includes: a joint angular velocity estimation unit (115) calculating a plurality of first joint angular accelerations in already executed control cycles by calculating a joint angular acceleration from a joint angle for each control cycle, and estimating a joint angular velocity in a still unexecuted control cycle from the first joint angular accelerations; a velocity determination unit (113) determining whether the estimated joint angular velocity exceeds a maximum velocity; and a suppression velocity calculation unit (114) calculating a suppression joint angular velocity in the still unexecuted control cycle from the estimated joint angular velocity.
    Type: Application
    Filed: September 28, 2009
    Publication date: September 8, 2011
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Junichiro Oga, Junji Oaki, Hideki Ogawa
  • Publication number: 20110060460
    Abstract: A robot control apparatus includes: a drive unit (101) driving an actuator (115) based on a torque command value; a drive torque estimation unit (107) estimating a drive torque from a joint shaft angle; an external torque calculation unit (108) calculating a difference between the estimated drive torque and the torque command value as an external torque; a Jacobian matrix calculation unit (105) calculating a Jacobian matrix based on the joint shaft angle; an external force calculation unit (109) calculating an external force from the Jacobian matrix and the external torque; and a correction amount calculation unit (110) calculating a correction amount from the external force.
    Type: Application
    Filed: September 28, 2009
    Publication date: March 10, 2011
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Junichiro Oga, Junji Oaki, Hideki Ogawa