Patents by Inventor Tatsuya Mori

Tatsuya Mori 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: 11165383
    Abstract: A power conversion device is configured to output on/off signals for switching on and off respective semiconductor switching elements of an inverter configured to invert a DC voltage output from a DC power supply into three-phase AC voltages so that, out of a plurality of voltage vectors defined so as to correspond to patterns of the on/off signals, the second closest voltage vector and the third closest voltage vector in phase to a current vector that is based on currents supplied as a result of output of the three-phase AC voltages from the inverter are formed.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: November 2, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Akira Furukawa
  • Publication number: 20210323603
    Abstract: An angle detection device such that an angle error is restricted even with respect to an angle signal component of an order other than that of an electrical angle frequency component included in an angle signal is obtained.
    Type: Application
    Filed: December 18, 2018
    Publication date: October 21, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tatsuya MORI, Akira FURUKAWA
  • Patent number: 11150075
    Abstract: An angle detection device including: an angle sensor AGSE outputting first and second sine wave signals SINWS1, SINWS2 having phases that are different from each other by 90 degrees in accordance with rotation of a detection target; an angle calculator calculating an angle signal corresponding to a rotation angle of the detection target based on SINWS1 and SINWS2; and an angle sensor AGSE abnormality determiner ASAD determining an abnormality of AGSE based on SINWS1 and SINWS2. The ASAD includes: an amplitude signal calculator calculating an amplitude signal MALS based on a square root of a sum of squares of SINWS1 and SINWS2; a first angle signal ANGS1 calculation processor calculating ANGS1 based on SINWS1 and MALS; a second angle signal ANGS2 calculation processor calculating ANGS2 based on SINWS2 and MALS; and an abnormality determination processor determining the abnormality of AGSE based on an error between ANGS1 and ANGS2.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: October 19, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Isao Kezobo, Munenori Yamamoto, Akira Furukawa
  • Patent number: 11130518
    Abstract: When a voltage application command is outputted to a three-phase winding of one system, a d-axis proportionality constant and a q-axis proportionality constant are set with Ld and Lq, respectively, as parameters; when voltage application commands are outputted to three-phase windings of two systems, a d-axis proportionality constant and a q-axis proportionality constant are set with [Ld+Md] and [Lq+Mq], respectively, as parameters.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: September 28, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Akira Furukawa, Isao Kezobo
  • Publication number: 20210226105
    Abstract: Provided is a silica glass member for hermetic sealing of an ultraviolet SMD LED element to be suitably used for hermetic sealing of, and as a transmission window material for, a surface mount-type package (SMD) having an ultraviolet LED mounted thereon and configured to emit ultraviolet light in a wavelength range of from 200 nm to 350 nm.
    Type: Application
    Filed: May 19, 2017
    Publication date: July 22, 2021
    Inventors: Akira FUJINOKI, Hiroyuki NISHIMURA, Akira SATO, Yuya YOKOSAWA, Tatsuya MORI
  • Patent number: 11063544
    Abstract: An inverter device includes: an inverter, a power supply current detection sensor, a phase current detection sensor, a three-phase voltage command calculator, and an inverter on/off signal generation unit. The phase current detection sensor detects a phase current in one phase of the inverter. The inverter on/off signal generation unit generates on/off signals based on the phase voltage commands. The three-phase voltage command calculator uses the power supply current and the phase current detected by the power supply current detection sensor and the phase current detection sensor, respectively, so as to calculate phase voltage commands directed to the inverter, and at a center time point of a period in which an upper arm switching element corresponding to one phase out of two phases for which the phase current detection sensor is not provided is on, and lower arm switching elements corresponding to the other two phases are on.
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: July 13, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Akira Furukawa, Isao Kezobo
  • Publication number: 20210206425
    Abstract: A control device for an electric power steering device includes an inverter converting direct current voltage into alternating current voltage, and apply to a synchronous motor; and a controller for converting three-phase current flowing in the synchronous motor into d-axis and q-axis currents, performing proportional integral control for a deviation between q-axis current command and the q-axis current so that the q-axis current follows the q-axis current command, to calculate q-axis voltage command, performing proportional integral control to calculate d-axis voltage command, converting the d-axis and q-axis voltage commands into three-phase voltage command, and controlling the inverter based on the three-phase voltage command. A q-axis proportional gain used in the proportional integral control for the q-axis current is obtained using a time constant of a q-axis current control system, a q-axis or d-axis inductance, and a constant greater than zero and less than one.
    Type: Application
    Filed: July 13, 2018
    Publication date: July 8, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tatsuya MORI, Yu HIROTANI
  • Patent number: 11047679
    Abstract: An angle detecting apparatus is obtained. The angle detecting apparatus is capable of correcting an electrical angle frequency component of an angle signal contained angle signal. An angle detecting apparatus computes an angle signal of a rotary machine from a sine signal and a cosine signal obtained from the angle signal. Offset correction values for the sine signal and the cosine signal are computed from the angle signal. The computed offset correction value for the sine signal is added to the sine signal to correct the sine signal, and the computed offset correction value for the cosine signal is added to the cosine signal to correct the cosine signal.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: June 29, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Tetsuya Kojima, Yoshihiko Kinpara, Takayuki Kifuku
  • Patent number: 11039794
    Abstract: A meal detection method executed by a processor of a computer, the meal detection method includes acquiring first sensing data from a first sensor configured to detect a motion of an arm of a target person; acquiring second sensing data from a second sensor configured to detect a heart rate of the target person; calculating a first evaluation value indicating likelihood that a meal is being performed based on a first feature amount extracted from the first sensing data; calculating a second evaluation value indicating likelihood that the meal is performed based on a second feature amount extracted from the second sensing data; and determining whether the target person has eaten the meal or not, based on the first evaluation value and the second evaluation value.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: June 22, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Tatsuya Mori, Kazuho Maeda, Akihiro Inomata
  • Publication number: 20210173299
    Abstract: A quartz glass plate has a quartz glass plate body and a quartz glass member adhered to the quartz glass plate body through an adhesive layer, where the adhesive layer contains silica, and a sum of concentrations of Li, Na, and K ions, being alkali metal ions and Ca ions, being alkaline earth metal ions contained in the adhesive layer is 10 ppm by mass or less. Consequently, a step with a uniform thickness can be formed, and a quartz glass plate is not easily damaged by irradiation with a light containing an ultraviolet ray.
    Type: Application
    Filed: March 25, 2019
    Publication date: June 10, 2021
    Applicant: Shin-Etsu Quartz Products Co., Ltd.
    Inventors: Tatsuya MORI, Akira SATO, Atsushi SHIMADA, Yuya YOKOSAWA, Nobumasa YOSHIDA
  • Patent number: 10998834
    Abstract: A power conversion device is configured to output, to each of two inverters configured to invert a DC voltage output from a DC power supply to three-phase AC voltages, on/off signals for switching on and off respective semiconductor switching elements of each of the inverters so that, out of a plurality of voltage vectors defined so as to correspond to patterns of the on/off signals, the second closest voltage vector and the third closest voltage vector in phase to a voltage command vector that is based on a voltage command value calculated for each of the inverters are formed.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: May 4, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Akira Furukawa
  • Publication number: 20210114652
    Abstract: To provide a motor control device capable of reducing noise without requiring preparation of a plurality of PWM carrier waves, an offset voltage is added equally to each phase of three-phase voltage command values from an inverter to output modified three-phase voltage command values, which are compared to a PWM carrier wave to output three-phase terminal voltages to a motor, and an offset voltage is switched among n offset candidate voltages (n is a natural number of three or more) having different values at set time intervals for output to vary timings to turn on and timings to turn off the three-phase terminal voltages equally for all phases.
    Type: Application
    Filed: January 11, 2017
    Publication date: April 22, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tatsuya MORI, Takayuki KIFUKU, Akira FURUKAWA
  • Patent number: 10965239
    Abstract: A power conversion device including: a first and second multi-phase inverters (MPI1,MPI2) to receive a DC voltage (Vdc) and convert into AC voltages (Vacs), when fc represents a frequency of a PWM signal output from each of the MPI1 and the MPI2, fr represents a lower limit frequency defined by noise regulation of the power conversion device, an absolute value of a differential voltage being a difference between: a first average voltage, which is an average value of first voltage commands of respective phases as command values for the Vacs of MPI1; and a second average voltage, which is an average value of second voltage commands of respective phases as command values for the Vacs of MPI2, is set equal to or less than k2·fc/fr·Vdc [V] (k2 is an odd number equal to or more than one), to reduce noise in a frequency band defined by noise regulation.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: March 30, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Akira Furukawa
  • Patent number: 10952670
    Abstract: A meal detection method executed by a processor of a computer, the meal detection method includes acquiring first sensing data from a first sensor configured to detect a motion of an arm of a target person; acquiring second sensing data from a second sensor configured to detect a heart rate of the target person; setting a motion section in which a specific motion by the arm of the target person is executed at least twice or more based on the first sensing data; and determining whether a meal is performed in a section including at least a portion of the motion section, based on the second sensing data corresponding to the motion section and learning information corresponding to a unit motion of the specific motion at a time of the meal.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: March 23, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Tatsuya Mori, Kazuho Maeda, Shinji Hotta, Akihiro Inomata
  • Publication number: 20210077626
    Abstract: Non-aqueous patches comprising lidocaine, which is not dissolved and is present in a crystalline state, have poor permeability to the skin. Therefore, non-aqueous patches have a high concentration of lidocaine. It is pointed out that lidocaine has an adverse effect on the heart. Prolonged use of a high concentration of lidocaine causes side effects, such as shock, rubor, and irritating sensation. External preparations comprising more than 5 mass % of lidocaine are designated as powerful drugs, and cannot be used as household (nonprescription) medicine. Provided is a non-aqueous patch that is effective to relieve muscle pain, the non-aqueous patch comprising lidocaine and/or its reactant, and a dissolving agent composed of an organic acid and a polyalcohol, which are contained in a base.
    Type: Application
    Filed: July 28, 2020
    Publication date: March 18, 2021
    Inventors: Tatsuya MORI, Naoyuki SAIDA
  • Publication number: 20210038531
    Abstract: [Problem] If lidocaine is composed of non-aqueous patch, the adhesive power of the preparation tends to get lower, as the composition amount of lidocaine is higher. It is popular to solve lidocaine in dissolving agent in order to compose lidocaine in patch and release effective amount into skin. However, if the amount of dissolving agent gets higher, the adhesive power gets extremely lower, so that an long-time attachment is difficult. [Solution] A non-aqueous patch comprising lidocaine and/or its reactant, and a dissolving agent which are contained in a base of plaster, the plaster being hold by a support, of which strength of 50% stretched to longitudinal direction is less than 2,000 g/50 mm and of biaxially-oriented stretch cloth.
    Type: Application
    Filed: July 28, 2020
    Publication date: February 11, 2021
    Inventors: Tatsuya MORI, Naoyuki SAIDA
  • Publication number: 20200412277
    Abstract: To provide a power converter which can distribute heat generation of the switching devices with good accuracy, even when the maximum heating phase of the positive electrode side and the maximum heating phase of the negative electrode side are different phases, and even when the maximum heating phase of the positive electrode side and the maximum heating phase of the negative electrode side changes before and after combining the offset voltage. The power converter calculates the offset voltage that makes the positive electrode side maximum heating evaluation value and the negative electrode side maximum heating evaluation value coincide with each other, in a state of controlling on/off the switching devices based on the combined AC voltage commands of the offset voltage.
    Type: Application
    Filed: April 18, 2018
    Publication date: December 31, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroya NATSUHARA, Yoshihiko KIMPARA, Isao KEZOBO, Tatsuya MORI, Akira FURKAWA
  • Publication number: 20200373869
    Abstract: A power conversion device is configured to output on/off signals for switching on and off respective semiconductor switching elements of an inverter configured to invert a DC voltage output from a DC power supply into three-phase AC voltages so that, out of a plurality of voltage vectors defined so as to correspond to patterns of the on/off signals, the second closest voltage vector and the third closest voltage vector in phase to a current vector that is based on currents supplied as a result of output of the three-phase AC voltages from the inverter are formed.
    Type: Application
    Filed: August 21, 2017
    Publication date: November 26, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tatsuya MORI, Akira FURUKAWA
  • Publication number: 20200324234
    Abstract: A polyphenylene sulfide short fiber has a monofilament fineness of 0.70 to 0.95 dtex, a strength of 4.5 to 5.5 cN/dtex, a fiber length of 20 to 100 mm, and a melt flow rate (MFR) value of 200 to 295 g/10 min. The polyphenylene sulfide short fiber enables improvements to be made in the dust collection performance and mechanical strength without impairing the fiber productivity or felt productivity.
    Type: Application
    Filed: December 12, 2018
    Publication date: October 15, 2020
    Inventors: Takeshi Sugimoto, Reo Mitsunaga, Tatsuya Mori, Yuma Kobayashi
  • Publication number: 20200325989
    Abstract: [Problem] To provide a sealing device having high pressure-resistance and durability for a reciprocating shaft. [Solution] A sealing device comprising an oil seal member and a dust seal member. The oil seal member and the dust seal member each comprise a rigid ring provided inside a shaft hole and an elastic ring attached to the rigid ring, wherein the elastic ring has formed thereon a lip for slidably contacting a reciprocating shaft. The sealing device further comprises an intermediate rigid ring provided between the elastic ring of the oil seal member and the elastic ring of the dust seal member, in a direction parallel to the axial direction of the reciprocating shaft.
    Type: Application
    Filed: March 26, 2018
    Publication date: October 15, 2020
    Inventor: Tatsuya MORI