Patents by Inventor Naoto MURAKAMI

Naoto MURAKAMI 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 correcting angular transmission error for reducer and robot system
    Patent number: 12000476
    Abstract: A method of correcting an angular transmission error for a reducer of creating correction data for correction of an angular transmission error of the reducer in a robot system including an arm, the reducer having an input shaft and an output shaft, a motor, an encoder, and an inertial sensor, includes rotating the arm in an input rotation angular range smaller than a necessary input rotation angular range, measuring and recording the angular transmission error, determining whether or not an accumulated value of measurement times is equal to or larger than a predetermined value, when the accumulated value is smaller than the predetermined value, measuring the angular transmission error of the reducer and updating a record, and, when the accumulated value is equal to or larger than the predetermined value, creating the correction data based on the recorded angular transmission error of the reducer.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: June 4, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Naoto Murakami
  • Method Of Correcting Angular Transmission Error For Reducer And Robot System
    Publication number: 20220243807
    Abstract: A method of correcting an angular transmission error for a reducer of creating correction data for correction of an angular transmission error of the reducer in a robot system including an arm, the reducer having an input shaft and an output shaft, a motor, an encoder, and an inertial sensor, includes rotating the arm in an input rotation angular range smaller than a necessary input rotation angular range, measuring and recording the angular transmission error, determining whether or not an accumulated value of measurement times is equal to or larger than a predetermined value, when the accumulated value is smaller than the predetermined value, measuring the angular transmission error of the reducer and updating a record, and, when the accumulated value is equal to or larger than the predetermined value, creating the correction data based on the recorded angular transmission error of the reducer.
    Type: Application
    Filed: January 31, 2022
    Publication date: August 4, 2022
    Inventor: Naoto MURAKAMI