Patents by Inventor Akira HASHIZAKA

Akira HASHIZAKA 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: 20220242378
    Abstract: A braking control system includes control circuitry configured to control first and second brakes in a vehicle. The control circuitry is configured to calculate a target braking force in accordance with the operation amount of a brake pedal by a driver, determine a first braking force and a second braking force based on the target braking force, and control each of the first and second brakes such that each of the determined braking forces is generated in the vehicle. The first and second braking forces are determined such that a sum of the first and second braking forces becomes the target braking force and a pitch behavior specified by a preset pitch behavior model occurs in the vehicle.
    Type: Application
    Filed: January 24, 2022
    Publication date: August 4, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Akira HASHIZAKA, Masahiro NAGOSHI, Norihira WAKAYAMA, Shinichi KAIHARA, Masakazu TAKADA, Kentaro WATANABE, Yuji NAKANO, Hirotaka MOCHIZUKI, Akira TSUDA, Naoki TSUKAMOTO
  • Publication number: 20170282926
    Abstract: A regeneration control apparatus which controls a regenerative braking force of an electric motor for driving an electric motor vehicle includes: a regeneration operation unit operated by a driver to select magnitude of the regenerative braking force stepwise from selection stages; a default operation unit operated by the driver to change the magnitude of the regenerative braking force to one of the selection stages which has been set as a default stage; a detection unit detecting an operation state on the regeneration operation unit during a learning period; and a default stage changing unit, when one of the selection stages whose selection frequency is highest during the learning period is different from one of the selection stages which has been currently set as the default stage, changing the default stage to another selection stage.
    Type: Application
    Filed: March 28, 2017
    Publication date: October 5, 2017
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Akira HASHIZAKA, Masaaki MOTAI, Hidetaka MITSUOKA, Toshikatsu SUZUKI, Masahiro MURASE
  • Patent number: 9403446
    Abstract: A driving-force controller for an electric vehicle including at least two motors that independently drive left and right wheels, includes a detector that detects driving operation by a driver, and a controller that calculates a demand torque Tr of the driver, the torque difference ?T applied to the left and right wheels during cornering, left and right torque-difference maintaining torques TLK and TRK of the motors when generating the demand torque Tr while maintaining the torque difference ?T, and controls the motors based on the torque-difference maintaining torques TLK and TRK. The controller determines the priorities of a demand torque mode that generates the demand torque Tr and a torque difference mode that generates the torque difference ?T depending on the driving operation detected by the detector.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: August 2, 2016
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Akira Hashizaka, Toshiyuki Matsumi, Hiroaki Miyamoto, Hideaki Taniguchi, Takanori Sugimoto, Masato Nishida, Toshifumi Mizui, Sosuke Nanbu, Yasuyuki Hatsuda, Tetsuya Furuichi, Ryosuke Koga
  • Patent number: 9266467
    Abstract: A stop lamp lighting control device for an electric vehicle having an electric regenerative braking system includes a calculation unit that converts a first deceleration threshold value for turning on a stop lamp or a second deceleration threshold value for turning off the stop lamp to a first regenerative torque threshold value for turning-on the stop lamp or a second regenerative torque threshold value for turning-off the stop lamp by calculation assumed that a weight of the vehicle is a curb weight or a gross vehicle weight, and a determination unit that performs a comparison between a regenerative torque value generated by the electric regenerative braking system and the first regenerative torque threshold value or the second regenerative torque threshold value and controls the stop lamp to be turned on or turned off based on the comparison result.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: February 23, 2016
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Toshifumi Mizui, Toshiyuki Matsumi, Hiroaki Miyamoto, Hideaki Taniguchi, Takanori Sugimoto, Yasuyuki Hatsuda, Akira Hashizaka, Masato Nishida, Sosuke Nanbu
  • Patent number: 9266466
    Abstract: A stop lamp lighting control device for an electric vehicle having an electric regenerative braking system, includes, a first calculation unit that converts a first deceleration threshold value to a first regenerative torque threshold value with a curb weight, a second calculation unit that converting a second deceleration threshold value to a second regenerative torque threshold value with a gross vehicle weight, a third calculation unit that calculates a third regenerative torque threshold value, and a determination unit that controls the stop lamp to be turned on when a regenerative torque value exceeds the first regenerative torque threshold value, the stop lamp to be turned off when the regenerative torque value is equal to or smaller than the second regenerative torque threshold value, and the stop lamp to be turned off when a given state continues.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: February 23, 2016
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Toshifumi Mizui, Toshiyuki Matsumi, Hiroaki Miyamoto, Hideaki Taniguchi, Takanori Sugimoto, Yasuyuki Hatsuda, Akira Hashizaka, Masato Nishida, Sosuke Nanbu
  • Publication number: 20150352978
    Abstract: A driving-force controller for an electric vehicle including at least two motors that independently drive left and right wheels, includes a detector that detects driving operation by a driver, and a controller that calculates a demand torque Tr of the driver, the torque difference ?T applied to the left and right wheels during cornering, left and right torque-difference maintaining torques TLK and TRK of the motors when generating the demand torque Tr while maintaining the torque difference ?T, and controls the motors based on the torque-difference maintaining torques TLK and TRK. The controller determines the priorities of a demand torque mode that generates the demand torque Tr and a torque difference mode that generates the torque difference ?T depending on the driving operation detected by the detector.
    Type: Application
    Filed: May 27, 2015
    Publication date: December 10, 2015
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Akira HASHIZAKA, Toshiyuki MATSUMI, Hiroaki MIYAMOTO, Hideaki TANIGUCHI, Takanori SUGIMOTO, Masato NISHIDA, Toshifumi MIZUI, Sosuke NANBU, Yasuyuki HATSUDA, Tetsuya FURUICHI, Ryosuke KOGA
  • Publication number: 20150175062
    Abstract: A stop lamp lighting control device for an electric vehicle having an electric regenerative braking system includes a calculation unit that converts a first deceleration threshold value for turning on a stop lamp or a second deceleration threshold value for turning off the stop lamp to a first regenerative torque threshold value for turning-on the stop lamp or a second regenerative torque threshold value for turning-off the stop lamp by calculation assumed that a weight of the vehicle is a curb weight or a gross vehicle weight, and a determination unit that performs a comparison between a regenerative torque value generated by the electric regenerative braking system and the first regenerative torque threshold value or the second regenerative torque threshold value and controls the stop lamp to be turned on Or turned off based on the comparison result.
    Type: Application
    Filed: December 24, 2014
    Publication date: June 25, 2015
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Toshifumi MIZUI, Toshiyuki MATSUMI, Hiroaki MIYAMOTO, Hideaki TANIGUCHI, Takanori SUGIMOTO, Yasuyuki HATSUDA, Akira HASHIZAKA, Masato NISHIDA, Sosuke NANBU
  • Publication number: 20150175061
    Abstract: A stop lamp lighting control device for an electric vehicle having an electric regenerative braking system, includes, a first calculation unit that converts a first deceleration threshold value to a first regenerative torque threshold value with a curb weight, a second calculation unit that converting a second deceleration threshold value to a second regenerative torque threshold value with a gross vehicle weight, a third calculation unit that calculates a third regenerative torque threshold value, and a determination unit that controls the stop lamp to be turned on when a regenerative torque value exceeds the first regenerative torque threshold value, the stop lamp to be turned off when the regenerative torque value is equal to or smaller than the second regenerative torque threshold value, and the stop lamp to be turned off when a given state continues.
    Type: Application
    Filed: December 24, 2014
    Publication date: June 25, 2015
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Toshifumi MIZUI, Toshiyuki MATSUMI, Hiroaki MIYAMOTO, Hideaki TANIGUCHI, Takanori SUGIMOTO, Yasuyuki HATSUDA, Akira HASHIZAKA, Masato NISHIDA, Sosuke NANBU
  • Patent number: 9037372
    Abstract: An output torque control system includes a control unit which includes an acceleration mode detection unit and an output torque control unit. The acceleration mode detection unit selects a normal acceleration mode which includes output torque information indicating an increased amount of output torque of an electric motor as time elapses or a rapid acceleration mode which includes output torque information indicating the increased amount of output torque of the electric motor as time elapses more largely than in the normal acceleration mode based on a result of a detection by a depressing speed detection unit. The output torque control unit selects one of the output torque information which corresponds to the result of the detection by the acceleration mode detection unit to control the output torque produced by the electric motor based on the selected output torque information.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: May 19, 2015
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Akira Hashizaka, Yoshiaki Sano, Hiroaki Miyamoto, Toshiyuki Matsumi, Norihiko Hatsumi, Takanori Sugimoto, Yasuyuki Hatsuda, Noritaka Terakawa, Tsuyoshi Takeo, Yutaka Nakagi
  • Patent number: 8947025
    Abstract: A regeneration control device of an electrically powered vehicle includes a motor generator which performs electric power regeneration by braking a driving wheel of the electrically powered vehicle, and a battery to which electric power regenerated by the motor generator is supplied. A monitoring unit includes at least one of a charging rate detection unit configured to detect a charging rate of the battery and a voltage value detection unit configured to detect a voltage value of the battery. A control unit controls the electric power regeneration of the motor generator according to at least one of the charging rate and the voltage value of the battery detected by the monitoring unit. The control unit is configured to decrease regenerative electric current of the motor generator as at least one of the charging rate and the voltage value is increased.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: February 3, 2015
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Norihiko Hatsumi, Yoshiaki Sano, Toshiyuki Matsumi, Takanori Sugimoto, Hiroaki Miyamoto, Yasuyuki Hatsuda, Akira Hashizaka, Masanori Watanabe, Nobuaki Ohta
  • Patent number: 8694188
    Abstract: A motor torque control device of an electrically-driven vehicle equipped with a motor serving as a driving source, is configured to limit an output of the motor when both a brake pedal and an accelerator pedal of the electrically-driven vehicle are stepped. A motor limit torque, which is an upper limit value of a command torque for the motor, is changed depending on a vehicle velocity of the electrically-driven vehicle detected by a vehicle velocity detecting unit and a stepping amount of the brake pedal detected by a brake pedal stepping amount detecting unit.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: April 8, 2014
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Hiroaki Miyamoto, Yoshiaki Sano, Akira Hashizaka, Yasuyuki Hatsuda, Toshiyuki Matsumi, Norihiko Hatsumi, Takanori Sugimoto
  • Patent number: 8439795
    Abstract: In a vehicle that generates creep torque using an electric motor, a controlling means that causes, on the basis of the results of the detecting by the vehicle speed detecting means and the braking operation detecting means, the electric motor to generate the creep torque, wherein if the brake is operated when the creep torque is generated, the controlling means decreases the creep torque by a first level, if the brake is not operated when the creep torque is generated, the controlling means increases or decrease the creep torque in a level range on the basis of the speed of the vehicle detected by the vehicle speed detecting means, and the first level is a decreasing level larger than a possible maximum decreasing level in the level range.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: May 14, 2013
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Hiroaki Miyamoto, Yoshiaki Sano, Takanori Sugimoto, Norihiko Hatsumi, Yasuyuki Hatsuda, Akira Hashizaka, Toshiyuki Matsumi
  • Publication number: 20130015791
    Abstract: A regeneration control device of an electrically powered vehicle includes a motor generator which performs electric power regeneration by braking a driving wheel of the electrically powered vehicle, and a battery to which electric power regenerated by the motor generator is supplied. Monitoring means includes at least one of charging rate detection means configured to detect a charging rate of the battery and voltage value detection means configured to detect a voltage value of the battery. Control means controls the electric power regeneration of the motor generator according to at least one of the charging rate and the voltage value of the battery detected by the monitoring means. The control means is configured to decrease regenerative electric current of the motor generator as at least one of the charging rate and the voltage value is increased.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 17, 2013
    Inventors: Norihiko HATSUMI, Yoshiaki Sano, Toshiyuki Matsumi, Takanori Sugimoto, Hiroaki Miyamoto, Yasuyuki Hatsuda, Akira Hashizaka, Masanori Watanabe, Nobuaki Ohta
  • Publication number: 20120232735
    Abstract: An output torque control system includes a control unit which includes an acceleration mode detection unit and an output torque control unit. The acceleration mode detection unit selects a normal acceleration mode which includes output torque information indicating an increased amount of output torque of an electric motor as time elapses or a rapid acceleration mode which includes output torque information indicating the increased amount of output torque of the electric motor as time elapses more largely than in the normal acceleration mode based on a result of a detection by a depressing speed detection unit. The output torque control unit selects one of the output torque information which corresponds to the result of the detection by the acceleration mode detection unit to control the output torque produced by the electric motor based on the selected output torque information.
    Type: Application
    Filed: March 6, 2012
    Publication date: September 13, 2012
    Inventors: Akira Hashizaka, Yoshiaki Sano, Hiroaki Miyamoto, Toshiyuki Matsumi, Norihiko Hatsumi, Takanori Sugimoto, Yasuyuki Hatsuda, Noritaka Terakawa, Tsuyoshi Takeo, Yutaka Nakagi
  • Publication number: 20120095634
    Abstract: A motor torque control device of an electrically-driven vehicle equipped with a motor serving as a driving source, is configured to limit an output of the motor when both a brake pedal and an accelerator pedal of the electrically-driven vehicle are stepped. A motor limit torque, which is an upper limit value of a command torque for the motor, is changed depending on a vehicle velocity of the electrically-driven vehicle detected by a vehicle velocity detecting unit and a stepping amount of the brake pedal detected by a brake pedal stepping amount detecting unit.
    Type: Application
    Filed: October 18, 2011
    Publication date: April 19, 2012
    Inventors: Hiroaki MIYAMOTO, Yoshiaki SANO, Akira HASHIZAKA, Yasuyuki HATSUDA, Toshiyuki MATSUMI, Norihiko HATSUMI, Takanori SUGIMOTO
  • Publication number: 20120071296
    Abstract: In a vehicle that generates creep torque using an electric motor, a controlling means that causes, on the basis of the results of the detecting by the vehicle speed detecting means and the braking operation detecting means, the electric motor to generate the creep torque, wherein if the brake is operated when the creep torque is generated, the controlling means decreases the creep torque by a first level, if the brake is not operated when the creep torque is generated, the controlling means increases or decrease the creep torque in a level range on the basis of the speed of the vehicle detected by the vehicle speed detecting means, and the first level is a decreasing level larger than a possible maximum decreasing level in the level range.
    Type: Application
    Filed: August 15, 2011
    Publication date: March 22, 2012
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Hiroaki MIYAMOTO, Yoshiaki SANO, Takanori SUGIMOTO, Norihiko HATSUMI, Yasuyuki HATSUDA, Akira HASHIZAKA, Toshiyuki MATSUMI