Patents by Inventor Masakatsu Hori
Masakatsu Hori 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: 11203358Abstract: A vehicle control apparatus including a driving force generation unit, a driving force distribution mechanism distributing a driving force from the driving force generation unit to a front wheel and a rear wheel, and an electronic control unit having a microprocessor and a memory. The microprocessor is configured to perform: determining whether a mode switching instruction from self-drive mode enabling a self-drive function to manual drive mode disabling the self-drive function has been input; and controlling the driving force distribution mechanism so that a driving force distribution rate of rear wheel driving force relative to front wheel driving force is a first distribution rate during driving in the self-drive mode, and thereafter so that the driving force distribution rate is a second distribution rate greater than the first distribution rate when it is determined that the mode switching instruction has been input.Type: GrantFiled: June 21, 2019Date of Patent: December 21, 2021Assignee: Honda Motor Co., Ltd.Inventors: Shogo Takano, Kota Saito, Takashi Adachi, Chao Niu, Masakatsu Hori
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Publication number: 20210284129Abstract: A behavior control apparatus for an electric vehicle includes a torque balancing unit that sets a distribution between a front wheel driving torque and a rear wheel driving torque according to a target yaw rate; sets the distributed front wheel driving torque to a target front wheel driving torque and sets the distributed rear wheel driving torque to a target rear wheel driving torque in a case where the distribution ratio of the rear wheel driving torque to the front wheel driving torque is less than a limit value; and sets the target front wheel driving torque and the target rear wheel driving torque in a manner that a braking force is produced at least on the rear wheel in a case where the distribution ratio of the rear wheel driving torque to the front wheel driving torque is equal to or more than the limit value.Type: ApplicationFiled: March 9, 2021Publication date: September 16, 2021Inventor: Masakatsu HORI
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Publication number: 20200001891Abstract: A vehicle control apparatus including a driving force generation unit, a driving force distribution mechanism distributing a driving force from the driving force generation unit to a front wheel and a rear wheel, and an electronic control unit having a microprocessor and a memory. The microprocessor is configured to perform: determining whether a mode switching instruction from self-drive mode enabling a self-drive function to manual drive mode disabling the self-drive function has been input; and controlling the driving force distribution mechanism so that a driving force distribution rate of rear wheel driving force relative to front wheel driving force is a first distribution rate during driving in the self-drive mode, and thereafter so that the driving force distribution rate is a second distribution rate greater than the first distribution rate when it is determined that the mode switching instruction has been input.Type: ApplicationFiled: June 21, 2019Publication date: January 2, 2020Inventors: Shogo Takano, Kota Saito, Takashi Adachi, Chao Niu, Masakatsu Hori
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Patent number: 9150118Abstract: A motor controller obtains: a first motor target rotation number, a first motor actual rotation number of a first motor, a second motor target rotation number, and a second motor actual rotation number of a second motor; determines a first rotation number difference between the first motor target rotation number and the first motor actual rotation number of the first motor, and a second rotation number difference between the second motor target rotation number and the second motor actual rotation number of the second motor, determines first and second rotation control torques based on a smaller one of the first rotation number difference and the second rotation number difference; and determines a first motor torque of the first motor and a second motor torque of the second motor based on the first and second rotation control torques.Type: GrantFiled: March 19, 2013Date of Patent: October 6, 2015Assignee: HONDA MOTOR CO., LTD.Inventors: Sei Shinohara, Satoshi Ando, Masatoshi Noguchi, Masakatsu Hori, Makoto Tsuchihashi
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Publication number: 20150042245Abstract: A motor controller obtains: a first motor target rotation number, a first motor actual rotation number of a first motor, a second motor target rotation number, and a second motor actual rotation number of a second motor; determines a first rotation number difference between the first motor target rotation number and the first motor actual rotation number of the first motor, and a second rotation number difference between the second motor target rotation number and the second motor actual rotation number of the second motor, determines first and second rotation control torques based on a smaller one of the first rotation number difference and the second rotation number difference; and determines a first motor torque of the first motor and a second motor torque of the second motor based on the first and second rotation control torques.Type: ApplicationFiled: March 19, 2013Publication date: February 12, 2015Applicant: HONDA MOTOR CO., LTD.Inventors: Sei Shinohara, Satoshi Ando, Masatoshi Noguchi, Masakatsu Hori, Makoto Tsuchihashi
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Patent number: 6786314Abstract: A driving force distribution system selectively operates right and left electromagnetic clutches and, thereby assisting a vehicle in turning by transmitting torque from the inner turning wheel to the outer turning wheel. The right electromagnetic clutch includes an armature on the right side of a core housing a coil. The left electromagnetic clutch includes an armature on the left side of the core housing a coil. When the right electromagnetic clutch is engaged in order to assist the turning by transmitting torque from the right driven wheel to the left driven wheel when the vehicle is turning right, since the right electromagnetic clutch includes the armature on the right side of the core, the armature is urged leftward toward the core due to a centrifugal force caused by turning right to reduce an air gap, thereby enhancing the responsiveness of engagement of the right electromagnetic clutch as well as reducing the power consumption.Type: GrantFiled: January 10, 2002Date of Patent: September 7, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Tatsuhiro Tomari, Akihiro Iwazaki, Masakatsu Hori, Kazuhiro Wada
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Patent number: 6640178Abstract: In a vehicle in which a torque generated in an engine is transmitted to driven wheels through a torque converter and an automatic transmission, when a speed ratio e in the torque converter is equal to or larger than a predetermined value (e.g., 0.85), and the accuracy of estimating a capacity &tgr; of the torque converter is low, an estimated engine torque Ti is multiplied by a torque ratio k of the torque converter to estimate a drive torque Td. When the speed ratio e in the torque converter is smaller than the predetermined value, and a response lag is produced in the transmission of the engine torque, a drive torque Td is estimated from an engine rotational sped Ne and the speed ratio e in the torque converter. During shifting of the automatic transmission, a drive torque Td is estimated from a wheel speed V. Thus, a correct drive torque can be estimated.Type: GrantFiled: November 15, 2001Date of Patent: October 28, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Kiyoshi Wakamatsu, Ryuji Asada, Akihiro Iwazaki, Shinji Okuma, Tatsuhiro Tomari, Masakatsu Hori
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Patent number: 6637572Abstract: An electromagnetic clutch structure in a driving force distribution system selectively operates right and left electromagnetic clutches so as to transmit torque from the inner turning wheel to the outer turning wheel, thereby assisting turning, or so as to transmit torque from the outer turning wheel to the inner turning wheel, thereby stabilizing vehicle behavior. The right and left electromagnetic clutches each include a coil, a core housing the coils, armatures arranged so as to adjoin the core in the lateral direction, and frictional engagement members arranged on the inside, in the radial direction, of the core. The frictional engagement members are engaged by pressure of a pressure part of the armatures, the pressure part extending further inward in the radial direction than the core.Type: GrantFiled: January 10, 2002Date of Patent: October 28, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Tatsuhiro Tomari, Akihiro Iwazaki, Masakatsu Hori, Kazuhiro Wada
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Patent number: 6607061Abstract: The engagement force of an electromagnetic clutch can be precisely controlled at a target engagement force by a simple structure even when an air gap of the electromagnetic clutch varies. An electromagnetic clutch control system includes magnetic flux density sensors, a target engagement force calculating device, a target magnetic flux density calculating device, and a feedback control device. The target magnetic flux density calculating device calculates a target magnetic flux density &phgr;t based on a target engagement force Tt of electromagnetic clutches calculated by the target engagement force calculating device. The current supplied to the electromagnetic clutches is feedback controlled by the feedback control device so that an actual magnetic flux density &phgr; detected by the magnetic flux density sensors agrees with the target magnetic flux density &phgr;t.Type: GrantFiled: January 31, 2002Date of Patent: August 19, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Masakatsu Hori, Ryuji Asada, Akihiro Iwazaki, Shinji Ohkuma, Tatsuhiro Tomari, Kiyoshi Wakamatsu
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Patent number: 6597975Abstract: A vehicle co-operative control system is provided which suppresses the torque steer phenomenon by co-operatively controlling a driving force and/or braking force distribution device and an electric power steering device without changing the control device of the electric power steering device for a vehicle having a specification in which the co-operative control is not carried out or with the introduction of only a minimal change. The control device can also be applied to a vehicle having a specification in which the co-operative control is carried out.Type: GrantFiled: March 8, 2000Date of Patent: July 22, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Tomoyuki Shinmura, Hiromi Inagaki, Masakatsu Hori, Tatsuhiro Tomari, Shinji Ohkuma, Akihiro Iwazaki, Yasuji Shibahata
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Patent number: 6543595Abstract: A driving force distribution device which controls the engagement forces of electromagnetic clutches and which govern the torque distribution between the driving wheels of a vehicle by calculating a target magnetic flux density and converting the same into a target excitation current. Since the relationship between the target magnetic flux density and the target excitation current changes according to a decrease in the air gaps accompanying wear of the frictional engagement members of the electromagnetic clutches, a relationship between the magnetic flux density and the excitation current is determined by applying current to the electromagnetic clutches when torque distribution control is not being carried out such as when the system is started, and the target excitation current is calculated from the target magnetic flux density based on the determined relationship.Type: GrantFiled: March 27, 2001Date of Patent: April 8, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Shinji Okuma, Ryuji Asada, Akihiro Iwazaki, Takashi Kuribayashi, Tatsuhiro Tomari, Masakatsu Hori, Kazuhiro Wada, Kiyoshi Wakamatsu
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Patent number: 6505702Abstract: An electric power steering system for a vehicle that consists of a motor control signal calculation device for calculating a motor control signal for driving a motor to generate a steering assist torque, which is based on at least a steering torque detected by a steering torque sensor, a motor control signal correction calculation device for calculating a corrected motor control signal from an amount of motor control signal correction calculated by an external control device and the motor control signal, a driving device for driving a motor based on the corrected motor control signal calculated by the motor control signal correction calculation device; and a motor control signal correction amount reducing device for reducing the amount of motor control signal correction according to vehicle speed.Type: GrantFiled: September 1, 2000Date of Patent: January 14, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Tomoyuki Shinmura, Hiromi Inagaki, Masakatsu Hori, Tatsuhiro Tomari, Shinji Okuma, Akihiro Iwazaki, Takashi Kuribayashi, Kazuhiro Wada
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Patent number: 6485201Abstract: A film back exchangeable camera is provided. The film back exchangeable camera has a camera body and a film back that can be attached to a rear portion of the camera body. The film back exchangeable camera includes a backward protrusion protruding backward from a film back attaching surface and covering a top surface of the film back. The camera also includes at least one operation member provided on the backward protrusion and a grip portion protruding backward from the film back attaching surface and covering one side surface of the film back.Type: GrantFiled: December 28, 2000Date of Patent: November 26, 2002Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventor: Masakatsu Hori
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Publication number: 20020134639Abstract: The engagement force of an electromagnetic clutch can be precisely controlled at a target engagement force by a simple structure even when an air gap of the electromagnetic clutch varies. An electromagnetic clutch control system includes magnetic flux density sensors, a target engagement force calculating device, a target magnetic flux density calculating device, and a feedback control device. The target magnetic flux density calculating device calculates a target magnetic flux density &phgr;t based on a target engagement force Tt of electromagnetic clutches calculated by the target engagement force calculating device. The current supplied to the electromagnetic clutches is feedback controlled by the feedback control device so that an actual magnetic flux density &phgr; detected by the magnetic flux density sensors agrees with the target magnetic flux density &phgr;t.Type: ApplicationFiled: January 31, 2002Publication date: September 26, 2002Inventors: Masakatsu Hori, Ryuji Asada, Akihiro Iwazaki, Shinji Ohkuma, Tatsuhiro Tomari, Kiyoshi Wakamatsu
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Publication number: 20020130008Abstract: A driving force distribution system selectively operates right and left electromagnetic clutches and, thereby assisting a vehicle in turning by transmitting torque from the inner turning wheel to the outer turning wheel. The right electromagnetic clutch includes an armature on the right side of a core housing a coil. The left electromagnetic clutch includes an armature on the left side of the core housing a coil. When the right electromagnetic clutch is engaged in order to assist the turning by transmitting torque from the right driven wheel to the left driven wheel when the vehicle is turning right, since the right electromagnetic clutch includes the armature on the right side of the core, the armature is urged leftward toward the core due to a centrifugal force caused by turning right to reduce an air gap, thereby enhancing the responsiveness of engagement of the right electromagnetic clutch as well as reducing the power consumption.Type: ApplicationFiled: January 10, 2002Publication date: September 19, 2002Inventors: Tatsuhiro Tomari, Akihiro Iwazaki, Masakatsu Hori, Kazuhiro Wada
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Publication number: 20020100654Abstract: An electromagnetic clutch structure in a driving force distribution system selectively operates right and left electromagnetic clutches so as to transmit torque from the inner turning wheel to the outer turning wheel, thereby assisting turning, or so as to transmit torque from the outer turning wheel to the inner turning wheel, thereby stabilizing vehicle behavior. The right and left electromagnetic clutches each include a coil, a core housing the coils, armatures arranged so as to adjoin the core in the lateral direction, and frictional engagement members arranged on the inside, in the radial direction, of the core. The frictional engagement members are engaged by pressure of a pressure part of the armatures, the pressure part extending further inward in the radial direction than the core.Type: ApplicationFiled: January 10, 2002Publication date: August 1, 2002Inventors: Tatsuhiro Tomari, Akihiro Iwazaki, Masakatsu Hori, Kazuhiro Wada
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Publication number: 20020099490Abstract: In a vehicle in which a torque generated in an engine is transmitted to driven wheels through a torque converter and an automatic transmission, when a speed ratio e in the torque converter is equal to or larger than a predetermined value (e.g., 0.85), and the accuracy of estimating a capacity &tgr; of the torque converter is low, an estimated engine torque Ti is multiplied by a torque ratio k of the torque converter to estimate a drive torque Td. When the speed ratio e in the torque converter is smaller than the predetermined value, and a response lag is produced in the transmission of the engine torque, a drive torque Td is estimated from an engine rotational sped Ne and the speed ratio e in the torque converter. During shifting of the automatic transmission, a drive torque Td is estimated from a wheel speed V. Thus, a correct drive torque can be estimated.Type: ApplicationFiled: November 15, 2001Publication date: July 25, 2002Inventors: Kiyoshi Wakamatsu, Ryuji Asada, Akihiro Iwazaki, Shinji Okuma, Tatsuhiro Tomari, Masakatsu Hori
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Patent number: 6402396Abstract: A film back exchangeable camera has a camera body and a film back that can be attached to and detached from the camera body.Type: GrantFiled: January 11, 2001Date of Patent: June 11, 2002Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventor: Masakatsu Hori
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Patent number: 6360153Abstract: A co-operative control system for a vehicle including a force distribution device for distributing the driving force or braking force between the right and left wheels or between the front and rear wheels, includes a first control means for controlling the operation of the force distribution device, an electric power steering device, having a motor for applying a steering assist torque to a vehicle steering system, and a second control means for calculating a motor control signal for driving the motor. The motor control signal is based on at least the steering torque detected by a steering torque detecting means.Type: GrantFiled: September 6, 2000Date of Patent: March 19, 2002Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Tomoyuki Shinmura, Hiromi Inagaki, Masakatsu Hori, Tatsuhiro Tomari, Shinji Okuma, Akihiro Iwazaki, Takashi Kuribayashi, Kazuhiro Wada
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Patent number: 6338580Abstract: A film support and feed system of a camera includes a pressure plate, a film feed mechanism which moves the film frame in a space in front of the pressure plate, a film suction mechanism which brings the film frame into intimate contact with the pressure plate by vacuum aspiration, a reversible motor, and an associating mechanism which selectively associates the reversible motor with either the film feed mechanism or the film suction mechanism in accordance with a direction of rotation of the reversible motor. The reversible motor is associated with the film feed mechanism by the associating mechanism to operate the film feed mechanism when the reversible motor is driven to rotate in a forward direction, or to operate the film suction mechanism when the reversible motor is driven to rotate in a reverse direction.Type: GrantFiled: December 21, 2000Date of Patent: January 15, 2002Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventor: Masakatsu Hori