Patents by Inventor Yukihiro Unno
Yukihiro Unno 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).
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Patent number: 10618175Abstract: A vibration measurement method for a moving part is a vibration measurement method in which vibration of a moving part is measured using a first inertial sensor. The method includes: performing measurement by the first inertial sensor in a state where the moving part is resonating, driven by a drive unit which drives the moving part; and finding a magnitude of vibration of the moving part, based on an output from the first inertial sensor. An example of the moving part may be a plurality of arms or the like provided in such a way as to be able to rotate about a rotation axis.Type: GrantFiled: April 18, 2017Date of Patent: April 14, 2020Assignee: Seiko Epson CorporationInventor: Yukihiro Unno
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Publication number: 20200030992Abstract: A robot system includes a robot having a base, an arm supported by the base, and a force detection unit provided in the base and detecting a first force applied to the arm, and a control unit that controls motion of the robot. The control unit performs force control of the arm and deceleration of the arm according to contact between the robot and an object based on output of the force detection unit.Type: ApplicationFiled: July 23, 2019Publication date: January 30, 2020Inventors: Masaki MOTOYOSHI, Yukihiro UNNO
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Publication number: 20190358811Abstract: A control apparatus includes a processor that is configured to control a robot including an arm and a force detector detecting a force applied to the arm, wherein the processor is configured to control the arm in a first control mode in which the arm is moved in a first direction when a direction of a force detected by the force detector is the first direction and a second control mode in which the arm is moved in a second direction different from the first direction when the direction of the force detected by the force detector is the first direction in teaching of the robot, and select the first control mode or the second control mode according to input by a user.Type: ApplicationFiled: May 21, 2019Publication date: November 28, 2019Inventors: Daisuke SATO, Yukihiro UNNO
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Publication number: 20170312922Abstract: A vibration measurement method for a moving part is a vibration measurement method in which vibration of a moving part is measured using a first inertial sensor. The method includes: performing measurement by the first inertial sensor in a state where the moving part is resonating, driven by a drive unit which drives the moving part; and finding a magnitude of vibration of the moving part, based on an output from the first inertial sensor. An example of the moving part may be a plurality of arms or the like provided in such a way as to be able to rotate about a rotation axis.Type: ApplicationFiled: April 18, 2017Publication date: November 2, 2017Inventor: Yukihiro UNNO
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Patent number: 9337801Abstract: A vibration element includes a piezoelectric substrate including a vibrating section and a thick section having a thickness larger than that of the vibrating section. The thick section includes a first thick section provided along a first outer edge of the vibrating section, a second thick section provided along a second outer edge thereof, and a third thick section provided along a third outer edge thereof. When a maximum size of the second thick section in the vibration direction is Lmax and a minimum size thereof is Lmin, an average size expressed by (Lmax+Lmin)/2 is 100 ?m or smaller.Type: GrantFiled: March 27, 2014Date of Patent: May 10, 2016Assignee: Seiko Epson CorporationInventors: Masayuki Kikushima, Masako Tanaka, Naohisa Obata, Yukihiro Unno
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Publication number: 20150222243Abstract: A vibration element includes a piezoelectric substrate including a vibrating section and a thick section having a thickness larger than that of the vibrating section. The thick section includes a first thick section provided along a first outer edge of the vibrating section, a second thick section provided along a second outer edge, and a third thick section provided along another first outer edge. An inclined outer edge section that intersects with each of an X axis and a Z? axis is provided in a tip section of the piezoelectric substrate.Type: ApplicationFiled: April 17, 2015Publication date: August 6, 2015Inventors: Masayuki KIKUSHIMA, Masako TANAKA, Naohisa OBATA, Yukihiro UNNO
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Patent number: 9070863Abstract: A resonator element includes a piezoelectric substrate that includes a vibration portion, and a thick portion which is integrally formed with an outer edge excluding a partial outer edge in an outer edge of the vibration portion and which is thicker than the vibration portion, and a pair of excitation electrodes that are respectively provided on a first main surface and a second main surface of a vibration region which are in front and rear relationships. In addition, the piezoelectric substrate includes first and second beam portions that are provided along a fourth side of the vibration portion.Type: GrantFiled: February 27, 2014Date of Patent: June 30, 2015Assignee: SEIKO EPSON CORPORATIONInventors: Masayuki Kikushima, Masako Tanaka, Naohisa Obata, Yukihiro Unno
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Patent number: 9035709Abstract: A vibration element includes a piezoelectric substrate including a vibrating section and a thick section having a thickness larger than that of the vibrating section. The thick section includes a first thick section provided along a first outer edge of the vibrating section, a second thick section provided along a second outer edge, and a third thick section provided along another first outer edge. An inclined outer edge section that intersects with each of an X axis and a Z? axis is provided in a tip section of the piezoelectric substrate.Type: GrantFiled: March 20, 2014Date of Patent: May 19, 2015Assignee: SEIKO EPSON CORPORATIONInventors: Masayuki Kikushima, Masako Tanaka, Naohisa Obata, Yukihiro Unno
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Publication number: 20140292436Abstract: A vibration element includes a piezoelectric substrate including a vibrating section and a thick section having a thickness larger than that of the vibrating section. The thick section includes a first thick section provided along a first outer edge of the vibrating section, a second thick section provided along a second outer edge thereof, and a third thick section provided along a third outer edge thereof. When a maximum size of the second thick section in the vibration direction is Lmax and a minimum size thereof is Lmin, an average size expressed by (Lmax+Lmin)/2 is 100 ?m or smaller.Type: ApplicationFiled: March 27, 2014Publication date: October 2, 2014Applicant: Seiko Epson CorporationInventors: Masayuki KIKUSHIMA, Masako TANAKA, Naohisa OBATA, Yukihiro UNNO
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Publication number: 20140292434Abstract: A vibration element includes a piezoelectric substrate including a vibrating section and a thick section having a thickness larger than that of the vibrating section. The thick section includes a first thick section provided along a first outer edge of the vibrating section, a second thick section provided along a second outer edge, and a third thick section provided along another first outer edge. An inclined outer edge section that intersects with each of an X axis and a Z? axis is provided in a tip section of the piezoelectric substrate.Type: ApplicationFiled: March 20, 2014Publication date: October 2, 2014Applicant: SEIKO EPSON CORPORATIONInventors: Masayuki KIKUSHIMA, Masako TANAKA, Naohisa OBATA, Yukihiro UNNO
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Publication number: 20140253253Abstract: A resonator element includes a piezoelectric substrate that includes a vibration portion, and a thick portion which is integrally formed with an outer edge excluding a partial outer edge in an outer edge of the vibration portion and which is thicker than the vibration portion, and a pair of excitation electrodes that are respectively provided on a first main surface and a second main surface of a vibration region which are in front and rear relationships. In addition, the piezoelectric substrate includes first and second beam portions that are provided along a fourth side of the vibration portion.Type: ApplicationFiled: February 27, 2014Publication date: September 11, 2014Inventors: Masayuki KIKUSHIMA, Masako TANAKA, Naohisa OBATA, Yukihiro UNNO
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Patent number: 7779688Abstract: A vibration gyro sensor, including: a vibrating element; a pair of drive electrodes for driving the vibrating element; at least two detection electrodes for detecting Coriolis force applied to the vibrating element; a monitor circuit coupled with one of the pair of the drive electrodes, so as to output a monitor signal; a drive circuit for amplifying the monitor signal so as to output the amplified signal to the other of the pair of drive electrode; a differential amplifier circuit for differentially amplifying at least two signals obtained from the detection electrodes of the vibrating element, so as to output a differential amplified signal; a synchronous detection circuit for synchronously detecting the differential amplified signal with respect to the monitor signal, so as to output a detected signal; a filter circuit for outputting a filtered signal in which a noise of the detected signal is removed; and a ratiometric circuit which receives the filtered signal varied in proportion to a variation of a powType: GrantFiled: December 19, 2007Date of Patent: August 24, 2010Assignee: Epson Toyocom CorporationInventors: Kenji Sato, Tatsunori Nakamura, Yukihiro Unno
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Publication number: 20080148847Abstract: A vibration gyro sensor, including: a vibrating element; a pair of drive electrodes for driving the vibrating element; at least two detection electrodes for detecting Coriolis force applied to the vibrating element; a monitor circuit coupled with one of the pair of the drive electrodes, so as to output a monitor signal; a drive circuit for amplifying the monitor signal so as to output the amplified signal to the other of the pair of drive electrode; a differential amplifier circuit for differentially amplifying at least two signals obtained from the detection electrodes of the vibrating element, so as to output a differential amplified signal; a synchronous detection circuit for synchronously detecting the differential amplified signal with respect to the monitor signal, so as to output a detected signal; a filter circuit for outputting a filtered signal in which a noise of the detected signal is removed; and a ratiometric circuit which receives the filtered signal varied in proportion to a variation of a powType: ApplicationFiled: December 19, 2007Publication date: June 26, 2008Applicant: EPSON TOYOCOM CORPORATIONInventors: Kenji SATO, Tatsunori NAKAMURA, Yukihiro UNNO
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Publication number: 20060201248Abstract: A vibrating gyro element that is formed of a piezoelectric material having a trigonal crystal structure and having a trigonal axis with respect to the Y-axis, includes a base portion, a detection arm extending in the Y-axis direction from one side of the base portion, and a pair of drive arms extending from the detection arm. One of the pair of drive arms extends in a direction at an angle of substantially +120 degrees with respect to the Y-axis direction. The other of the pair of drive arms extends in a direction at an angle of substantially ?120 degrees with respect to the Y-axis direction. The drive arms exist on substantially the same plane as the base portion and the detection arm.Type: ApplicationFiled: March 8, 2006Publication date: September 14, 2006Inventor: Yukihiro Unno
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Patent number: 7095161Abstract: To make a substantial mounting area smaller. A piezoelectric resonator has a piezoelectric resonator element accommodated in a package. The piezoelectric resonator element includes a pair of connection electrodes which are connected to excitation electrodes. The respective connection electrodes are joined to mount electrodes formed in the package. The piezoelectric resonator includes four external electrodes at the outer surface of the bottom of the package. The external electrodes disposed along the shorter latus of the package on one side in the lengthwise direction thereof are electrically connected with the mount electrodes to which the respective connection electrodes of the piezoelectric resonator element are connected.Type: GrantFiled: March 15, 2004Date of Patent: August 22, 2006Assignee: Seiko Epson CorporationInventors: Yukihiro Unno, Katsuhiko Miyazaki
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Patent number: 6998926Abstract: To provide a piezoelectric oscillator in which, even after a first package and a second package are bonded to each other, the connection state can be easily observed externally, so that testability can be enhanced, and connection failure can be easily found out to perform a repair. A piezoelectric oscillator includes a first package housing a piezoelectric resonator element therein and having external terminal portions connected to excitation electrodes of the piezoelectric resonator element, and a second package housing an oscillating circuit element, the first package being superposed on and fixed to the second package. Herein, in the second package, the oscillating circuit element, which is connected to a lead frame, is molded out of resin, and connection terminal portions and mounting terminals formed of the lead frame are exposed at the second package.Type: GrantFiled: December 16, 2003Date of Patent: February 14, 2006Assignee: Seiko Epson CorporationInventors: Katsuhiko Miyazaki, Yugo Koyama, Yukihiro Unno
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Patent number: 6849991Abstract: The invention provides a stabilized frequency characteristic over a wide temperature range. A quartz resonating piece is provided such that an electrical axis of quartz corresponds to an X axis, a mechanical axis of the quartz corresponds to a Y axis, and an optical axis of the quartz corresponds to a Z axis. The quartz resonating piece includes a quartz plate having a side that is parallel to an X?axis set by clockwise rotation of the X axis around the Z axis by an angle equal to or greater than ?5.0° and less than ?1.0° or by an angle greater than +1.0° and equal to or less than 15.9°, and another side that is parallel to a Z? axis set by clockwise rotation of the Z axis around the X? axis by an angle in a range from 34.6° to 35.1° inclusive; or a quartz plate having a side that is parallel to the X? axis set by clockwise rotation of the X axis around the Z axis by an angle in a range from ?15.9° to ?5.Type: GrantFiled: March 20, 2003Date of Patent: February 1, 2005Assignee: Seiko Epson CorporationInventors: Guoqing Zhang, Masako Tanaka, Eiji Karaki, Yukihiro Unno
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Publication number: 20040217673Abstract: To make a substantial mounting area smaller. A piezoelectric resonator has a piezoelectric resonator element accommodated in a package. The piezoelectric resonator element includes a pair of connection electrodes which are connected to excitation electrodes. The respective connection electrodes are joined to mount electrodes formed in the package. The piezoelectric resonator includes four external electrodes at the outer surface of the bottom of the package. The external electrodes disposed along the shorter latus of the package on one side in the lengthwise direction thereof are electrically connected with the mount electrodes to which the respective connection electrodes of the piezoelectric resonator element are connected.Type: ApplicationFiled: March 15, 2004Publication date: November 4, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Yukihiro Unno, Katsuhiko Miyazaki
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Publication number: 20040178858Abstract: To provide a piezoelectric oscillator in which, even after a first package and a second package are bonded to each other, the connection state can be easily observed externally, so that testability can be enhanced, and connection failure can be easily found out to perform a repair. A piezoelectric oscillator includes a first package housing a piezoelectric resonator element therein and having external terminal portions connected to excitation electrodes of the piezoelectric resonator element, and a second package housing an oscillating circuit element, the first package being superposed on and fixed to the second package. Herein, in the second package, the oscillating circuit element, which is connected to a lead frame, is molded out of resin, and connection terminal portions and mounting terminals formed of the lead frame are exposed at the second package.Type: ApplicationFiled: December 16, 2003Publication date: September 16, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Katsuhiko Miyazaki, Yugo Koyama, Yukihiro Unno
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Publication number: 20030218512Abstract: The invention provides a stabilized frequency characteristic over a wide temperature range. A quartz resonating piece is provided such that an electrical axis of quartz corresponds to an X axis, a mechanical axis of the quartz corresponds to a Y axis, and an optical axis of the quartz corresponds to a Z axis. The quartz resonating piece includes a quartz plate having a side that is parallel to an X′ axis set by clockwise rotation of the X axis around the Z axis by an angle equal to or greater than −5.0° and less than −1.0° or by an angle greater than +1.0° and equal to or less than 15.9°, and another side that is parallel to a Z′ axis set by clockwise rotation of the Z axis around the X′ axis by an angle in a range from 34.6° to 35.1° inclusive; or a quartz plate having a side that is parallel to the X′ axis set by clockwise rotation of the X axis around the Z axis by an angle in a range from −15.9° to −5.Type: ApplicationFiled: March 20, 2003Publication date: November 27, 2003Applicant: Seiko Epson CorporationInventors: Guoqing Zhang, Masako Tanaka, Eiji Karaki, Yukihiro Unno