Patents by Inventor Yoji Masui
Yoji Masui 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: 11909339Abstract: In a resonance suppression control device that controls suppression of vibrations in a resonance frequency in each vibration mode of a control target having a plurality of vibration modes, a configuration that is simple, and can suppress vibrations in a resonance frequency in the plurality of vibration modes is provided. A control device is a resonance suppression control device that controls suppression of vibrations in a resonance frequency in each vibration mode of a control target having a plurality of vibration modes. The control device includes a plurality of feedback loops that provide negative feedback of output of the control target corresponding to the plurality of vibration modes to an input side. The plurality of feedback loops respectively include band-pass filters that extract one or more vibration modes from the plurality of vibration modes, phase compensators, and amplitude adjusters. The band-pass filters and the phase compensators function as differentiators.Type: GrantFiled: February 25, 2021Date of Patent: February 20, 2024Assignee: SINFONIA TECHNOLOGY CO., LTD.Inventor: Yoji Masui
-
Publication number: 20230074727Abstract: In a resonance suppression control device that controls suppression of vibrations in a resonance frequency in each vibration mode of a control target having a plurality of vibration modes, a configuration that is simple, and can suppress vibrations in a resonance frequency in the plurality of vibration modes is provided. A control device is a resonance suppression control device that controls suppression of vibrations in a resonance frequency in each vibration mode of a control target having a plurality of vibration modes. The control device includes a plurality of feedback loops that provide negative feedback of output of the control target corresponding to the plurality of vibration modes to an input side. The plurality of feedback loops respectively include band-pass filters that extract one or more vibration modes from the plurality of vibration modes, phase compensators, and amplitude adjusters. The band-pass filters and the phase compensators function as differentiators.Type: ApplicationFiled: February 25, 2021Publication date: March 9, 2023Applicant: SINFONIA TECHNOLOGY CO., LTD.Inventor: Yoji MASUI
-
Patent number: 11366432Abstract: A dead time estimation device capable of accurately estimating a dead time in a control system is provided. A dead time estimation device 6 includes a dead time calculation section 64 configured to obtain a dead time L{circumflex over (?)}?1 with which an evaluation function J in Equation (1) is at minimum [Equation 7] J=?|?/e?{circumflex over (L)}?1s???|df??(1) where G{circumflex over (?)}/e?L??1s is a frequency characteristic of an element from which a dead time element is removed from a transfer function of a control target P and G{circumflex over (?)}? is a transfer function not including the dead time element in the control target P.Type: GrantFiled: February 28, 2020Date of Patent: June 21, 2022Assignee: SINFONIA TECHNOLOGY CO., LTD.Inventor: Yoji Masui
-
Publication number: 20200310363Abstract: A dead time estimation device capable of accurately estimating a dead time in a control system is provided. A dead time estimation device 6 includes a dead time calculation section 64 configured to obtain a dead time L{circumflex over (?)}?1 with which an evaluation function J in Equation (1) is at minimum [Equation 7] J=?|?/e?{circumflex over (L)}?1s???|df ??(1) where G{circumflex over (?)}/e?L{circumflex over (?)}?1s is a frequency characteristic of an element from which a dead time element is removed from a transfer function of a control target P and G{circumflex over (?)}? is a transfer function not including the dead time element in the control target P.Type: ApplicationFiled: February 28, 2020Publication date: October 1, 2020Applicant: SINFONIA TECHNOLOGY CO., LTD.Inventor: Yoji MASUI
-
Patent number: 9579794Abstract: An articulated robot comprises a control unit including: a track information storage unit which stores track information corresponding to a combination of a start point and an end point; a setting unit which sets a current position and a target position of an arm distal end as the start point and the end point; and an operation command generation unit which generates an operation command based on track information corresponding to a combination of the set start point and the set end point (corresponding track information). If the corresponding track information is not stored but related track information corresponding to a combination of a start point and an end point having a predetermined relationship with a combination of the set start point and the set end point is stored in the track information storage unit, the operation command generation unit generates the operation command based on the related track information.Type: GrantFiled: July 14, 2015Date of Patent: February 28, 2017Assignee: SINFONIA TECHNOLOGY CO., LTD.Inventors: Yoji Masui, Toru Saeki
-
Publication number: 20160184987Abstract: An articulated robot comprises a control unit including: a track information storage unit which stores track information corresponding to a combination of a start point and an end point; a setting unit which sets a current position and a target position of an arm distal end as the start point and the end point; and an operation command generation unit which generates an operation command based on track information corresponding to a combination of the set start point and the set end point (corresponding track information). If the corresponding track information is not stored but related track information corresponding to a combination of a start point and an end point having a predetermined relationship with a combination of the set start point and the set end point is stored in the track information storage unit, the operation command generation unit generates the operation command based on the related track information.Type: ApplicationFiled: July 14, 2015Publication date: June 30, 2016Applicant: SINFONIA TECHNOLOGY CO., LTD.Inventors: Yoji Masui, Toru Saeki
-
Patent number: 8958907Abstract: A robot arm apparatus includes an arm mechanism including a base member and a link pivotally connected to the base member for pivotal motion in a horizontal plane through a rotational shaft. The link holds a regular circular transport object at its distal end. The apparatus also includes an edge detector, provided on the base member, that detects two edges of the regular circular transport object as the link pivotally rotates with respect to the base member, a pivotal angle detector that detects a pivotal angle of the link with respect to the base member, and a center position calculator that calculates a center position of the regular circular transport object with respect to the link. The calculation is based on two pivotal angles detected by the pivotal angle detector when the edge detector detects the two edges of the regular circular transport object.Type: GrantFiled: March 21, 2012Date of Patent: February 17, 2015Assignee: Sinfonia Technology Co., Ltd.Inventors: Toru Saeki, Yasumichi Mieno, Yuji Urabe, Toshio Kamigaki, Yoji Masui
-
Publication number: 20120253511Abstract: A robot arm apparatus includes an arm mechanism including a base member and a link pivotally connected to the base member for pivotal motion in a horizontal plane through a rotational shaft. The link holds a regular circular transport object at its distal end. The apparatus also includes an edge detector, provided on the base member, that detects two edges of the regular circular transport object as the link pivotally rotates with respect to the base member, a pivotal angle detector that detects a pivotal angle of the link with respect to the base member, and a center position calculator that calculates a center position of the regular circular transport object with respect to the link. The calculation is based on two pivotal angles detected by the pivotal angle detector when the edge detector detects the two edges of the regular circular transport object.Type: ApplicationFiled: March 21, 2012Publication date: October 4, 2012Applicant: SINFONIA TECHNOLOGY CO., LTD.Inventors: Toru SAEKI, Yasumichi Mieno, Yuji Urabe, Toshio Kamigaki, Yoji Masui