Patents by Inventor Yasuaki Aoki

Yasuaki Aoki 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: 10770998
    Abstract: A control apparatus for is a rotating electric machine applied to a control system including a power conversion circuit, a rotating electric machine, and a capacitor. The control apparatus selects two types of active voltage vectors that sandwich a command voltage vector that is applied to a rotating electric machine from a power conversion circuit and have a phase difference of 60 degrees therebetween. The control apparatus selects, of two types of active voltage vectors that sandwich the command voltage vector and have a phase difference of 120 degrees therebetween, one of two types of active voltage vectors that differs from the two types of active voltage vectors selected earlier, based on a driving state of the rotating electric machine. The control apparatus controls the power conversion apparatus to perform switching operations to control the rotating electric machine, based on the selected three types of active voltage vectors.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: September 8, 2020
    Assignee: DENSO CORPORATION
    Inventors: Yasuaki Aoki, Shinji Makita
  • Publication number: 20200231062
    Abstract: An electrically driven vehicle management device is configured to acquire vehicle inherent information that can be used in identifying an electrically driven vehicle when a charging cable attachable to and detachable from the electrically driven vehicle is connected to the electrically driven vehicle, and determine, based on the acquired vehicle inherent information, a coping operation to be performed in relation to the electrically driven vehicle to which the charging cable is connected.
    Type: Application
    Filed: December 4, 2019
    Publication date: July 23, 2020
    Inventors: Atsuyuki Suzuki, Hirokazu Watanabe, Yasuaki Aoki, Masanori Takeda
  • Patent number: 10709224
    Abstract: A device control system including a wearable device and a server. The wearable device includes a device that ejects a fragrance material, a biological sensor, and a computer. The computer transmits biological data to the server, receives a first control signal, and causes the device to eject a fragrance material upon receipt of the first control signal. The server includes a computer. The computer receives the biological data, estimates user's emotion from the received biological data, and in a case where it is determined that the user has positive emotion by using a result of the estimation, (i) transmits the first control signal to the wearable device and (ii) transmits, to an aroma device, a second control signal for causing the aroma device to eject a fragrance material at a predetermined timing.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: July 14, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yasuaki Okumura, Hiroto Yanagawa, Yumiko Ohno, Yuichi Aoki, Mikiya Nakata, Akira Asai
  • Publication number: 20200160076
    Abstract: An evaluation system includes: an acquisition unit that acquires an image acquired by imaging an exterior of a vehicle; and an evaluation unit that derives and assigns an evaluation point for evaluating social credibility of a vehicle occupant of the vehicle on the basis of the image acquired by the acquisition unit.
    Type: Application
    Filed: November 8, 2019
    Publication date: May 21, 2020
    Inventors: Atsuyuki Suzuki, Masanori Takeda, Yasuaki Aoki, Hirokazu Watanabe
  • Publication number: 20200160500
    Abstract: A prediction device includes: an acquirer configured to acquire a captured image of a scene of a section in a town and released information representing a value for the section; and a deriver configured to derive a public safety index representing a public safety state of the section in the future by inputting a result of analyzing the image and the released information to a prediction model.
    Type: Application
    Filed: November 12, 2019
    Publication date: May 21, 2020
    Inventors: Atsuyuki Suzuki, Masanori Takeda, Yasuaki Aoki, Hirokazu Watanabe
  • Publication number: 20200144883
    Abstract: A controller of a rotating electric machine performs a control on a control amount of the rotating electric machine by (a) calculating a voltage instruction value for controlling the control amount based on voltage detection values of the shunt resistors when shunt resistors in at least two phases have an electric current flowing therein, and (b) performing a drive control of each of switches in an inverter based on the calculated voltage instruction value. The controller determines whether a phase current flowing in a winding is detectable in at least two of three phases based on voltage values of the shunt resistors, and, when determining that the phase current is not detectable in the at least two phases, the controller performs the drive control based on a past current value or a past voltage value in a two-phase rotating coordinate system of the rotating electric machine.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 7, 2020
    Inventor: Yasuaki AOKI
  • Publication number: 20200136549
    Abstract: A controller of a rotating electric machine includes a current detector detecting a voltage of each of shunt resistors in at least two phases from among the shunt resistors in three phases during an electric current flowing period in which the shunt resistors in the at least two phases have an electric current flowing therein; and a signal generator setting a switching mode of each of switches forming an inverter for controlling an estimated angular velocity to an instruction angular velocity based on the detected voltage. The signal generator sets a switching mode to flow the electric current in the shunt resistors in the at least two phases during at least part of one half of a modulation cycle of control of the estimated angular velocity.
    Type: Application
    Filed: October 24, 2019
    Publication date: April 30, 2020
    Inventor: Yasuaki AOKI
  • Patent number: 10582708
    Abstract: An amide derivative represented by the following Formula (1) is provided as an amide derivative showing a significantly excellent effect for a pest control action. In the following Formula (1), A represents a carbon atom, a nitrogen atom, or the like, and K represents a non-metal atomic group necessary for forming a cyclic linking group derived from benzene or a heterocyclie. X represents a halogen atom or the like; n represents an integer of from 0 to 4. R1 and R2 represent hydrogen atoms, alkyl groups, or the like. T represents —C(=G1)-Q1 or —C(=G1)-G2Q2, and G1 to G3 each represent oxygen atoms or the like. Q1 and Q2 each represent a hydrogen atom, an alkyl group, an aryl group, or the like. Y1 and Y5 each represent a halogen atom or the like, Y2 and Y4 each represent a hydrogen atom or the like, and Y3 represents a C2-C5 haloalkyl group.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: March 10, 2020
    Assignee: Mitsui Chemicals Agro, Inc.
    Inventors: Yumi Kobayashi, Hidenori Daido, Hiroyuki Katsuta, Michikazu Nomura, Hidetaka Tsukada, Atsushi Hirabayashi, Yusuke Takahashi, Yoji Aoki, Atsuko Kawahara, Yasuaki Fukazawa, Mai Hirose
  • Patent number: 10432124
    Abstract: In a current detection apparatus, a corrector obtains first current-value pairs of the plural values of the corrective first phase current and the respective plural values of the corrective first phase bus-based current synchronized with the plural values of the corrective first phase current. The corrector obtains second current-value pairs of the plural values of the corrective second phase current and the respective plural values of the corrective second phase bus-based current synchronized with the plural pairs of the corrective second phase current. The corrector corrects at least target first and second phase currents detected by a first current detector based on the obtained first current-value pairs and the second current-value pairs to thereby align amplitudes of the respective target first and second phase currents with each other.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: October 1, 2019
    Assignee: DENSO CORPORATION
    Inventor: Yasuaki Aoki
  • Publication number: 20190131904
    Abstract: In a current detection apparatus, a corrector obtains first current-value pairs of the plural values of the corrective first phase current and the respective plural values of the corrective first phase bus-based current synchronized with the plural values of the corrective first phase current. The corrector obtains second current-value pairs of the plural values of the corrective second phase current and the respective plural values of the corrective second phase bus-based current synchronized with the plural pairs of the corrective second phase current. The corrector corrects at least target first and second phase currents detected by a first current detector based on the obtained first current-value pairs and the second current-value pairs to thereby align amplitudes of the respective target first and second phase currents with each other.
    Type: Application
    Filed: October 25, 2018
    Publication date: May 2, 2019
    Applicant: DENSO CORPORATION
    Inventor: Yasuaki AOKI
  • Publication number: 20180331645
    Abstract: A control apparatus for is a rotating electric machine applied to a control system including a power conversion circuit, a rotating electric machine, and a capacitor. The control apparatus selects two types of active voltage vectors that sandwich a command voltage vector that is applied to a rotating electric machine from a power conversion circuit and have a phase difference of 60 degrees therebetween. The control apparatus selects, of two types of active voltage vectors that sandwich the command voltage vector and have a phase difference of 120 degrees therebetween, one of two types of active voltage vectors that differs from the two types of active voltage vectors selected earlier, based on a driving state of the rotating electric machine. The control apparatus controls the power conversion apparatus to perform switching operations to control the rotating electric machine, based on the selected three types of active voltage vectors.
    Type: Application
    Filed: May 14, 2018
    Publication date: November 15, 2018
    Applicant: DENSO CORPORATION
    Inventors: Yasuaki AOKI, Shinji MAKITA
  • Publication number: 20170201201
    Abstract: In a current detection apparatus, an arm current detection unit detects each of at least first and second phase currents having respective amplitudes and flowing in a multiphase rotary electric machine based on a potential difference between input and output terminals of the corresponding one of first and second detection switches during the corresponding one of the first and second detection switches being on. A bus current detection unit detects each of at least bus-based first and second phase currents corresponding to the first and second phases of the multiphase rotary electric machine based on a current flowing through one of first and second buses. An amplitude correction unit corrects the first and second phase currents based on the bus-based first and second phase currents such that the amplitudes of the respective first and second phase currents match with each other.
    Type: Application
    Filed: December 29, 2016
    Publication date: July 13, 2017
    Applicant: DENSO CORPORATION
    Inventors: Yasuaki AOKI, Yosuke MATSUKI, Hideji YOSHIDA
  • Patent number: 9013137
    Abstract: In a system for driving an inverter, a superimposing element superimposes, on an output voltage of the inverter. The high-frequency voltage signal is correlated with a measured high-frequency component value of a current flowing in the rotary machine. A calculating element calculates a rotational angle of the rotary machine based on the measured high-frequency component value. A dead-time compensating element shifts a start edge and an end edge of an on duration for each of first and second switching elements of the inverter by a preset same time to compensate for an error due to dead time. A current manipulating element manipulates a current flowing in the rotary machine to maintain an accuracy of calculation of the rotational angle.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: April 21, 2015
    Assignee: Denso Corporation
    Inventors: Yasuaki Aoki, Hiroko Yoneshima, Tomoya Takahashi
  • Patent number: 9007795
    Abstract: The power conversion device includes a plurality of semiconductor modules, each having a main body section including a switching element therein. In a module unit, a positive module and a negative module are disposed such that main surfaces of the respective main body sections oppose each other. A positive terminal, a first intermediate terminal, a negative terminal, and a second intermediate terminal project in a Z direction perpendicular to X direction in which the positive module and the negative module oppose each other. A first vector V1 from the positive terminal towards the first intermediate terminal and a second vector V2 from the second intermediate terminal towards the negative terminal are configured such that these vector components V12 and V22 in a Y direction perpendicular to both the X and Z directions are opposite to each other.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: April 14, 2015
    Assignee: Denso Corporation
    Inventors: Tetsuya Matsuoka, Hiroyoshi Sawada, Makoto Okamura, Hiroshi Inamura, Yasuaki Aoki
  • Patent number: 8829829
    Abstract: In a system, a superimposing element sets a command value vector of a high-frequency voltage signal and superimposes the high-frequency voltage signal with the command value vector on an output voltage of an inverter. The high-frequency voltage signal has a frequency higher than an electrical angular frequency of a rotary machine. The command value vector is correlated with a measured high-frequency component value of a current signal flowing in the rotary machine. A calculating element calculates a rotational angle of the rotary machine based on the measured high-frequency component value of the current signal flowing in the rotary machine. A reducing element controls at least one of the inverter and a direct voltage power supply to reduce a difference due to the dead time between the command value vector and a vector of a high-frequency voltage signal to be actually superimposed on the output voltage of the inverter.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: September 9, 2014
    Assignee: Denso Corporation
    Inventors: Hiroko Yoneshima, Yasuaki Aoki, Hideji Yoshida
  • Publication number: 20130272046
    Abstract: The power conversion device includes a plurality of semiconductor modules, each having a main body section including a switching element therein. In a module unit, a positive module and a negative module are disposed such that main surfaces of the respective main body sections oppose each other. A positive terminal, a first intermediate terminal, a negative terminal, and a second intermediate terminal project in a Z direction perpendicular to X direction in which the positive module and the negative module oppose each other. A first vector V1 from the positive terminal towards the first intermediate terminal and a second vector V2 from the second intermediate terminal towards the negative terminal are configured such that these vector components V12 and V22 in a Y direction perpendicular are opposite to each other.
    Type: Application
    Filed: March 18, 2013
    Publication date: October 17, 2013
    Applicant: DENSO CORPORATION
    Inventors: Tetsuya MATSUOKA, Hiroyoshi SAWADA, Makoto OKAMURA, Hiroshi INAMURA, Yasuaki AOKI
  • Publication number: 20120217849
    Abstract: In a system for driving an inverter, a superimposing element superimposes, on an output voltage of the inverter. The high-frequency voltage signal is correlated with a measured high-frequency component value of a current flowing in the rotary machine. A calculating element calculates a rotational angle of the rotary machine based on the measured high-frequency component value. A dead-time compensating element shifts a start edge and an end edge of an on duration for each of first and second switching elements of the inverter by a preset same time to compensate for an error due to dead time. A current manipulating element manipulates a current flowing in the rotary machine to maintain an accuracy of calculation of the rotational angle.
    Type: Application
    Filed: February 28, 2012
    Publication date: August 30, 2012
    Applicant: DENSO CORPORATION
    Inventors: Yasuaki AOKI, Hiroko Yoneshima, Tomoya Takahashi
  • Publication number: 20120206077
    Abstract: In a system, a superimposing element sets a command value vector of a high-frequency voltage signal and superimposes the high-frequency voltage signal with the command value vector on an output voltage of an inverter. The high-frequency voltage signal has a frequency higher than an electrical angular frequency of a rotary machine. The command value vector is correlated with a measured high-frequency component value of a current signal flowing in the rotary machine. A calculating element calculates a rotational angle of the rotary machine based on the measured high-frequency component value of the current signal flowing in the rotary machine. A reducing element controls at least one of the inverter and a direct voltage power supply to reduce a difference due to the dead time between the command value vector and a vector of a high-frequency voltage signal to be actually superimposed on the output voltage of the inverter.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 16, 2012
    Applicant: DENSO CORPORATION
    Inventors: Hiroko YONESHIMA, Yasuaki Aoki, Hideji Yoshida
  • Patent number: 8106622
    Abstract: A control system aims at converting, via a switching circuit, a direct current voltage into an alternating current voltage to be applied to multiphase windings of a multiphase rotary machine to thereby control rotation of the multiphase rotary machine. In the control system, a command voltage determiner determines a command voltage value for an alternating current voltage to be applied to the multiphase windings based on a zero crossing of a line-to-line current and a zero crossing of the amount of change in the line-to-line current. A driving unit drives the switching circuit on and off based on the determined command voltage value to thereby modulate the direct current voltage to the alternating current voltage to be applied to the multiphase windings.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: January 31, 2012
    Assignee: Denso Corporation
    Inventors: Yasuaki Aoki, Hideji Yoshida
  • Patent number: 7514896
    Abstract: In a method of estimating a magnetic pole position in a synchronous motor, an alternating current voltage having ?- and ?-axes components in an ?? coordinates system representing a two-phase alternating current coordinates system is applied to the motor, and ?- and ?-axes components of an alternating current are detected from the motor. A wave height of the alternating current changing with time is approximated to a wave height not depending on time, so that a differentiated value of the wave height with respect to time is substantially set at zero. An induced voltage of the motor is calculated from the components of the alternating current voltage and the components of the alternating current. The magnetic pole position is estimated from the induced voltage.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: April 7, 2009
    Assignee: Denso Corporation
    Inventors: Akihiro Imura, Yasuaki Aoki