Patents by Inventor Yasuyuki Matsumoto

Yasuyuki Matsumoto 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).

  • Publication number: 20210129740
    Abstract: A vehicle lighting system is provided in a vehicle capable of traveling in an automated driving mode, and includes: a lighting unit configured to form a light distribution pattern by emitting light toward the outside of the vehicle; and a lighting control unit configured to change the brightness of the light distribution pattern according to a driving mode of the vehicle.
    Type: Application
    Filed: June 14, 2018
    Publication date: May 6, 2021
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Yasuyuki KATO, Akinori MATSUMOTO, Akitaka KANAMORI, Teruaki YAMAMOTO, Yoshiaki FUSHIMI
  • Publication number: 20210044241
    Abstract: A motor driving device includes an acquisition unit configured to acquire multiple pieces of data in data acquisition periods having different lengths; a selection unit configured to select a piece of data from among the multiple pieces of data, based on timing at which a switching circuit switches switching devices; and a control unit configured to control the switching circuit based on the selected data.
    Type: Application
    Filed: July 31, 2020
    Publication date: February 11, 2021
    Inventors: Masaya Tateda, Yasuyuki Matsumoto
  • Publication number: 20200303618
    Abstract: An MEMS device includes: a first member; a second member forming a sealed space with the first member therebetween; and a third member disposed between the first member and the second member and joined to the first member and the second member, in which the third member has lower rigidity than rigidity of the first member and the second member, and the third member is provided with a communication portion that establishes communication between the sealed space and an external space.
    Type: Application
    Filed: March 19, 2020
    Publication date: September 24, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Chikara KOJIMA, Eiji OSAWA, Koji OHASHI, Kanechika KIYOSE, Tomohiro SAYAMA, Hironori SUZUKI, Katsuhiro IMAI, Yasuyuki MATSUMOTO, Takahiro KAMIJO
  • Publication number: 20200168784
    Abstract: A piezoelectric device includes a substrate having opening portions, a vibrating plate provided to overlap with the substrate and having a plurality of vibrating regions overlapping with the opening portions in a plan view as seen from a thickness direction of the substrate, piezoelectric elements provided in the vibrating regions, and bypass wires provided outside of the vibrating regions of the vibrating plate and electrically coupled to the plurality of piezoelectric elements, wherein slits penetrating the bypass wires in the thickness direction are provided in the bypass wires.
    Type: Application
    Filed: November 21, 2019
    Publication date: May 28, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Chikara KOJIMA, Koji OHASHI, Hironori SUZUKI, Kanechika KIYOSE, Katsuhiro IMAI, Yasuyuki MATSUMOTO, Takahiro KAMIJO
  • Publication number: 20200130014
    Abstract: An ultrasonic element includes an element substrate including a first surface, a second surface having a front-back relation with the first surface, an opening section piercing through the element substrate from the first surface to the second surface, and a partition wall section surrounding the opening section, a supporting film provided on the first surface of the element substrate to cover the opening section and including a third surface facing the opening section and a fourth surface having a front-back relation with the third surface, a piezoelectric element provided on the fourth surface of the supporting film and disposed in a region overlapping the opening section of the supporting film in a plan view from a film thickness direction extending from the third surface to the fourth surface, a sealing plate provided to be opposed to the fourth surface of the supporting film and joined to the supporting film by an adhesive member via a beam section projecting toward the supporting film, and a wall sectio
    Type: Application
    Filed: October 23, 2019
    Publication date: April 30, 2020
    Inventors: Hironori SUZUKI, Chikara KOJIMA, Koji OHASHI, Yasuyuki MATSUMOTO, Katsuhiro IMAI
  • Publication number: 20200112273
    Abstract: A motor drive device includes a converter, an inverter, a DC link capacitor, a dynamic braking circuit, current detectors, and an abnormality detector. The dynamic braking circuit includes a resistor and a switch provided between terminals of the motor, and performs braking of the motor by establishing the switch in an open state to disconnect between the terminals of the motor when driving the motor, and short-circuiting the terminals of the motor via the resistor with the switch in a closed state when stopping the motor. The current detectors detect the drive current of the motor. The abnormality detector detects, when driving the motor, abnormality of the dynamic braking circuit on the basis of the slope of the rise or fall of the drive current of the motor detected by the current detectors.
    Type: Application
    Filed: August 29, 2019
    Publication date: April 9, 2020
    Applicant: FANUC CORPORATION
    Inventors: Masaya TATEDA, Yasuyuki MATSUMOTO
  • Patent number: 10587213
    Abstract: A motor drive apparatus includes a converter configured to convert AC power inputted by an AC power supply to DC power and to output the same to a DC link, a DC link capacitor provided for the DC link, an inverter configured to convert the DC power in the DC link to AC power for driving a motor and to output the AC power, a DC voltage detection unit configured to detect a value of DC voltage applied across the DC link capacitor, an AC voltage detection unit configured to detect a peak value of AC voltage on an AC input side of the converter, and a leakage current detection unit configured to detect a leakage current caused by driving the motor, based on the value of DC voltage detected by the DC voltage detection unit and the peak value of AC voltage detected by the AC voltage detection unit.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: March 10, 2020
    Assignee: FANUC CORPORATION
    Inventors: Masaya Tateda, Yasuyuki Matsumoto
  • Patent number: 10554165
    Abstract: A motor drive apparatus includes a converter configured to convert AC power of an AC power supply into DC power and outputs the DC power, a DC link unit including capacitors connected in series with each other, an inverter connected in parallel with the DC link unit, and configured to convert the DC power of the DC link unit into AC power for driving a motor, and outputs the AC power, and a short-circuit judgment unit configured to judge that at least one of the capacitors in the DC link unit has shorted in the case where, when the value of a voltage applied to a positive and negative bipolar terminal of the DC link unit is smaller than a first threshold, the value of an input current flowing from the AC power supply into the DC link unit via the converter is larger than a second threshold.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: February 4, 2020
    Assignee: FANUC CORPORATION
    Inventors: Yuuta Gotou, Yasuyuki Matsumoto, Masaya Tateda
  • Publication number: 20190363600
    Abstract: A motor driving device includes N units (N is a natural number equal to or greater than 2) of inverters configured to control N units of motors, respectively, a×N units (a is a natural number) of cables configured to allow connection between the N units of inverters and the N units of motors, respectively, and a PWM signal output unit configured to transmit a PWM signal to the N units of inverters. The N units of inverters and the a×N units of cables are divided into M groups (M?N). The PWM signal output unit outputs the PWM signal for driving at least one inverter belonging to each group of the M groups so that the PWM signals have phase differences shifted by 360 degrees/M among the groups.
    Type: Application
    Filed: May 3, 2019
    Publication date: November 28, 2019
    Applicant: FANUC CORPORATION
    Inventors: Yasuyuki MATSUMOTO, Masaya TATEDA, Keitarou INAGAKI
  • Patent number: 10401415
    Abstract: A motor drive apparatus includes a converter, a DC link capacitor, a plurality of inverters, a diagnosis command unit configured to give a command to one of the plurality of inverters to perform power conversion, an AC voltage detection unit configured to detect a peak value of AC voltage on an AC input side of the converter, a DC voltage detection unit configured to detect a value of DC voltage across the DC link capacitor, a calculation unit to calculate a difference between the value of DC voltage and the peak value of AC voltage, a storage unit configured to store the difference in association with the inverters, and a leakage current determination unit configured to determine that the inverter associated with the largest of the differences stored in the storage unit is the inverter that has caused the largest leakage current.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: September 3, 2019
    Assignee: FANUC CORPORATION
    Inventors: Masaya Tateda, Yasuyuki Matsumoto
  • Patent number: 10377134
    Abstract: A MEMS device includes a wire that is formed of a conductive portion embedded into a recess opened in a first face of a substrate and a bump electrode that is electrically connected to the wire. A total width, in a second direction intersecting a first direction along which the wire extends on the first face, of an opening of the recess in a connection region where the wire and the bump electrode are electrically connected to each other is narrower than a width, in the second direction, of an opening of the recess in a region outside the connection region.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: August 13, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Motoki Takabe, Eiju Hirai, Munehide Saimen, Yasuyuki Matsumoto, Shuichi Tanaka, Tsuyoshi Yoda
  • Publication number: 20190244779
    Abstract: There are provided a driving control portion configured to output a closing command for bringing a contact to a closed state to a first driving portion, and also to output to the first driving portion an opening command for bringing the contact to an open state and the closing command in an alternate and repeated manner until the current runs through the contact; a number-of-retries obtaining portion configured to obtain, as a number of retries, the number of times that the driving control portion repeated the opening command and the closing command until the current runs through the contact after the driving control portion outputted the closing command to the first driving portion; and a usable period estimating portion configured to estimate a usable period from the present time of a first relay in accordance with the number of retries.
    Type: Application
    Filed: February 5, 2019
    Publication date: August 8, 2019
    Applicant: FANUC CORPORATION
    Inventors: Hirokazu Nagai, Masaya Tateda, Yasuyuki Matsumoto
  • Publication number: 20190245474
    Abstract: A motor drive apparatus includes a converter configured to convert AC power of an AC power supply into DC power and outputs the DC power, a DC link unit including capacitors connected in series with each other, an inverter connected in parallel with the DC link unit, and configured to convert the DC power of the DC link unit into AC power for driving a motor, and outputs the AC power, and a short-circuit judgment unit configured to judge that at least one of the capacitors in the DC link unit has shorted in the case where, when the value of a voltage applied to a positive and negative bipolar terminal of the DC link unit is smaller than a first threshold, the value of an input current flowing from the AC power supply into the DC link unit via the converter is larger than a second threshold.
    Type: Application
    Filed: February 5, 2019
    Publication date: August 8, 2019
    Inventors: Yuuta GOTOU, Yasuyuki MATSUMOTO, Masaya TATEDA
  • Patent number: 10189135
    Abstract: A motor drive device is capable of allowing a user to surely recognize that effect when a cutting fluid adheres to a casing. The motor drive device includes an electronic component and a casing that houses the electronic component. A part of the casing changes color when coming in contact with a cutting fluid and the casing may change to different colors based on the concentration of the cutting fluid.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: January 29, 2019
    Assignee: FANUC CORPORATION
    Inventors: Yuuki Kumamoto, Yasuyuki Matsumoto, Kiichi Inaba, Naoki Masuda
  • Patent number: 10179384
    Abstract: A motor drive system enabling detection of cutting fluid deposited at a housing of electronic components. A housing holding electronic components of a motor drive system has top faces slanted with respect to the horizontal plane so as to guide the deposited cutting fluid. The housing further includes storage parts collecting the cutting fluid guided along the top faces. The storage parts may be graduated so as to enable the collected amount of the cutting fluid to be measured. The storage parts may be configured to be detachable from the housing.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: January 15, 2019
    Assignee: FANUC CORPORATION
    Inventors: Ryou Matsuda, Yasuyuki Matsumoto, Naoki Masuda, Kiichi Inaba
  • Publication number: 20180348284
    Abstract: A motor drive apparatus includes a converter, a DC link capacitor, a plurality of inverters, a diagnosis command unit configured to give a command to one of the plurality of inverters to perform power conversion, an AC voltage detection unit configured to detect a peak value of AC voltage on an AC input side of the converter, a DC voltage detection unit configured to detect a value of DC voltage across the DC link capacitor, a calculation unit to calculate a difference between the value of DC voltage and the peak value of AC voltage, a storage unit configured to store the difference in association with the inverters, and a leakage current determination unit configured to determine that the inverter associated with the largest of the differences stored in the storage unit is the inverter that has caused the largest leakage current.
    Type: Application
    Filed: May 17, 2018
    Publication date: December 6, 2018
    Applicant: FANUC CORPORATION
    Inventors: Masaya Tateda, Yasuyuki Matsumoto
  • Publication number: 20180351494
    Abstract: A motor drive apparatus includes a converter configured to convert AC power inputted by an AC power supply to DC power and to output the same to a DC link, a DC link capacitor provided for the DC link, an inverter configured to convert the DC power in the DC link to AC power for driving a motor and to output the AC power, a DC voltage detection unit configured to detect a value of DC voltage applied across the DC link capacitor, an AC voltage detection unit configured to detect a peak value of AC voltage on an AC input side of the converter, and a leakage current detection unit configured to detect a leakage current caused by driving the motor, based on the value of DC voltage detected by the DC voltage detection unit and the peak value of AC voltage detected by the AC voltage detection unit.
    Type: Application
    Filed: May 17, 2018
    Publication date: December 6, 2018
    Applicant: FANUC CORPORATION
    Inventors: Masaya Tateda, Yasuyuki Matsumoto
  • Patent number: 10148203
    Abstract: A motor driving apparatus of the present invention includes a converter unit configured to convert an AC voltage into a DC voltage, a DC link unit configured to smooth the DC voltage by a capacitor to generate a DC link voltage, an inverter unit configured to convert the DC link voltage into a multiphase AC voltage for motor driving, short bars configured to electrically interconnect terminals of the DC link unit and terminals of the inverter unit, and a DC link voltage detection unit configured to detect the DC link voltage. At least parts of the short bars are located between the terminals of the DC link unit and terminals of the DC link voltage detection unit.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: December 4, 2018
    Assignee: FANUC CORPORATION
    Inventor: Yasuyuki Matsumoto
  • Patent number: 10122316
    Abstract: A motor drive apparatus in which a main power supply used for motor drive is supplied via a magnetic contactor includes: a monitoring unit that monitors a main power supply voltage at an AC power supply input side of the magnetic contactor in a state in which contacts of the magnetic contactor are opened; a determination unit that determines whether the main power supply voltage monitored by the monitoring unit is normal; and a magnetic contactor control unit that outputs a command that controls opening and closing of contacts of the magnetic contactor, wherein when it is determined by the determination unit that the main power supply voltage is abnormal, the magnetic contactor control unit maintains an output of an open command such that the contacts of the magnetic contactor are opened.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: November 6, 2018
    Assignee: FANUC CORPORATION
    Inventors: Hironao Tanouchi, Yasuyuki Matsumoto, Naoki Masuda, Kiichi Inaba
  • Patent number: 10090798
    Abstract: A machine learning apparatus that learns predicted life of a power device of a motor driving apparatus converting DC power into AC power by a switching operation of the power device to supply the AC power to an AC motor includes: a state observation unit that observes a state variable constituted by data regarding the number of times of switching of the power device, data regarding junction temperature of the power device, and data regarding presence or absence of a failure of the power device; and a learning unit that learns the predicted life of the power device in accordance with a training data set defined by the state variable.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: October 2, 2018
    Assignee: FANUC CORPORATION
    Inventors: Masato Watanabe, Yasuyuki Matsumoto