Patents by Inventor Toshiyuki Mikida
Toshiyuki Mikida 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: 11597434Abstract: An actuator that applies force to a member associated with steering, and a control device that controls the actuator, have duplex configuration. First and second control devices compute the same controlled variable as first and second controlled variables, respectively. In a normal mode, the control device controls the actuator according to the first controlled variable. The first and second control devices send and receive respectively computed controlled variables to and from each other via communications. When a discrepancy arises between the first and second controlled variables, or an abnormality occurs in communications between the first and second control devices, the operating mode is switched from the normal mode to an independent mode. In the independent mode, the first and second control devices control the first and second actuators, according to the first and second controlled variables, respectively.Type: GrantFiled: April 15, 2020Date of Patent: March 7, 2023Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, JTEKT CORPORATION, DENSO CORPORATIONInventors: Masaharu Yamashita, Atsushi Sato, Masataka Okuda, Yosuke Yamashita, Shintaro Takayama, Shunsuke Hiromasa, Toshiyuki Mikida, Shoji Kubota, Yuji Fujita, Kenichi Abe, Toshimitsu Sakai
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Patent number: 11565746Abstract: An actuator that applies force to a member associated with steering, and a control device that controls the actuator, have duplex configuration. First and second control devices compute the same controlled variable as first and second controlled variables, respectively. In a normal mode, the control device controls the actuator according to the first controlled variable. The first and second control devices send and receive respectively computed controlled variables to and from each other via communications. When a discrepancy arises between the first and second controlled variables, or an abnormality occurs in communications between the first and second control devices, the operating mode is switched from the normal mode to an independent mode. In the independent mode, the first and second control devices control the first and second actuators, according to the first and second controlled variables, respectively.Type: GrantFiled: April 15, 2020Date of Patent: January 31, 2023Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, JTEKT CORPORATION, DENSO CORPORATIONInventors: Masaharu Yamashita, Atsushi Sato, Masataka Okuda, Yosuke Yamashita, Shintaro Takayama, Shunsuke Hiromasa, Toshiyuki Mikida, Shoji Kubota, Yuji Fujita, Kenichi Abe, Toshimitsu Sakai
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Publication number: 20220063712Abstract: An electric power source device includes an auxiliary electric power source for a main electric power source that supplies electric power to electric power supply targets, including an electric circuit of a control system for controlling a specific control target and an electric circuit of a power system that requires larger electric power than the electric circuit of the control system; and a selection circuit configured to supply the electric power from one electric power source having a higher voltage, out of the main electric power source and the auxiliary electric power source, to at least the electric circuit of the control system among the electric power supply targets.Type: ApplicationFiled: August 25, 2021Publication date: March 3, 2022Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuuta KAJISAWA, Fumihiko SATO, Masaharu YAMASHITA, Atsushi SATOU, Masataka OKUDA, Toshiyuki MIKIDA, Hiroaki HANZAWA
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Patent number: 11146255Abstract: A power supply circuit includes a first P-channel MOSFET and a first voltage application circuit. The first P-channel MOSFET is provided between an on-board power supply and a vehicular apparatus that is a power supply target, and is configured to switch a power-ON state in which electric power is supplied to the vehicular apparatus and a power-OFF state in which the supply of the electric power is interrupted. The first voltage application circuit is configured to apply a voltage having a potential lower than a potential of the on-board power supply to a gate terminal such that a state of the first P-channel MOSFET is switched to the power-ON state, and apply a voltage having a potential equal to the potential of the on-board power supply to the gate terminal such that the state of the first P-channel MOSFET is switched to the power-OFF state.Type: GrantFiled: March 18, 2020Date of Patent: October 12, 2021Assignee: JTEKT CORPORATIONInventors: Fumihiko Sato, Shingo Suzuki, Hiroaki Hanzawa, Masataka Okuda, Toshiyuki Mikida
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Patent number: 11139679Abstract: An auxiliary power source device includes a main power source-side path, an auxiliary power source-side path, a power source control circuit, an analog determination circuit that is provided separately from the power source control circuit, and a power source switching circuit. The power source control circuit controls switching between a conduction state and an interruption state on the main power source-side path and the auxiliary power source-side path. The analog determination circuit determines an occurrence of abnormality in the main power source and generates a switching signal when the occurrence of the abnormality in the main power source is determined. The power source switching circuit switches a power source for supplying power to a power supply target, from the main power source to the auxiliary power source.Type: GrantFiled: May 27, 2020Date of Patent: October 5, 2021Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Fumihiko Sato, Masataka Okuda, Toshiyuki Mikida, Hiroaki Hanzawa
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Publication number: 20200381936Abstract: An auxiliary power source device includes a main power source-side path, an auxiliary power source-side path, a power source control circuit, an analog determination circuit that is provided separately from the power source control circuit, and a power source switching circuit. The power source control circuit controls switching between a conduction state and an interruption state on the main power source-side path and the auxiliary power source-side path. The analog determination circuit determines an occurrence of abnormality in the main power source and generates a switching signal when the occurrence of the abnormality in the main power source is determined. The power source switching circuit switchs a power source for supplying power to a power supply target, from the main power source to the auxiliary power source.Type: ApplicationFiled: May 27, 2020Publication date: December 3, 2020Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Fumihiko SATO, Masataka OKUDA, Toshiyuki MIKIDA, Hiroaki HANZAWA
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Publication number: 20200335966Abstract: An electric power supply circuit includes an auxiliary electric power supply; a first MOSFET provided on an auxiliary electric power supply-side feed path, the first MOSFET including a parasitic diode configured to restrict conduction of electric current in a direction from the auxiliary electric power supply toward the feed target; a second MOSFET provided on the auxiliary electric power supply-side feed path, the second MOSFET including a parasitic diode configured to restrict conduction of the electric current in a direction from the feed target toward the auxiliary electric power supply; and a third MOSFET provided on at least one of the auxiliary electric power supply-side feed path and the main electric power supply-side feed path, the third MOSFET including a parasitic diode configured to restrict conduction of the electric current in a direction from the main electric power supply toward the auxiliary electric power supply.Type: ApplicationFiled: April 14, 2020Publication date: October 22, 2020Applicant: JTEKT CORPORATIONInventors: Fumihiko SATO, Masataka OKUDA, Toshiyuki MIKIDA, Hiroaki HANZAWA
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Publication number: 20200331522Abstract: An actuator that applies force to a member associated with steering, and a control device that controls the actuator, have duplex configuration. First and second control devices compute the same controlled variable as first and second controlled variables, respectively. In a normal mode, the control device controls the actuator according to the first controlled variable. The first and second control devices send and receive respectively computed controlled variables to and from each other via communications. When a discrepancy arises between the first and second controlled variables, or an abnormality occurs in communications between the first and second control devices, the operating mode is switched from the normal mode to an independent mode. In the independent mode, the first and second control devices control the first and second actuators, according to the first and second controlled variables, respectively.Type: ApplicationFiled: April 15, 2020Publication date: October 22, 2020Applicants: Toyota Jidosha Kabushiki Kaisha, JTEKT Corporation, Denso CorporationInventors: Masaharu Yamashita, Atsushi Sato, Masataka Okuda, Yosuke Yamashita, Shintaro Takayama, Shunsuke Hiromasa, Toshiyuki Mikida, Shoji Kubota, Yuji Fujita, Kenichi Abe, Toshimitsu Sakai
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Publication number: 20200313667Abstract: A power supply circuit includes a first P-channel MOSFET and a first voltage application circuit. The first P-channel MOSFET is provided between an on-board power supply and a vehicular apparatus that is a power supply target, and is configured to switch a power-ON state in which electric power is supplied to the vehicular apparatus and a power-OFF state in which the supply of the electric power is interrupted. The first voltage application circuit is configured to apply a voltage having a potential lower than a potential of the on-board power supply to a gate terminal such that a state of the first P-channel MOSFET is switched to the power-ON state, and apply a voltage having a potential equal to the potential of the on-board power supply to the gate terminal such that the state of the first P-channel MOSFET is switched to the power-OFF state.Type: ApplicationFiled: March 18, 2020Publication date: October 1, 2020Applicant: JTEKT CORPORATIONInventors: Fumihiko SATO, Shingo SUZUKI, Hiroaki HANZAWA, Masataka OKUDA, Toshiyuki MIKIDA
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Patent number: 7359778Abstract: In a vehicle steering apparatus, front wheels are controlled to be turned by a computer program processing. A displacement/torque conversion section 51 converts a steering angle ? into a steering torque Td that is in relation of exponential function. A torque/lateral-acceleration conversion section 52, torque/yaw-rate conversion section 53 and torque/curvature conversion section 54 convert into an anticipated lateral acceleration Gd, anticipated yaw rate ?d and anticipated turning curvature ?d based upon the steering torque Td. Turning angle conversion sections 55, 56 and 57 calculate target turning angles ?g, ?? and ??. A turning angle deciding section 58 decides a target turning angle ?d among the target turning angles ?g, ?? and ?? according to the detected vehicle speed V. A turning control section 60 controls the steered wheels to be turned into the target turning angle ?d.Type: GrantFiled: May 19, 2005Date of Patent: April 15, 2008Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Takeshi Goto, Tatsuo Sugitani, Ryuichi Kurosawa, Toshiyuki Mikida, Kenji Tozu
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Publication number: 20060011404Abstract: In a vehicle steering apparatus, front wheels are controlled to be turned by a computer program processing. A displacement/torque conversion section 51 converts a steering angle ? into a steering torque Td that is in relation of exponential function. A torque/lateral-acceleration conversion section 52, torque/yaw-rate conversion section 53 and torque/curvature conversion section 54 convert into an anticipated lateral acceleration Gd, anticipated yaw rate ?d and anticipated turning curvature ?d based upon the steering torque Td. Turning angle conversion sections 55, 56 and 57 calculate target turning angles ?g, ?y and ?p. A turning angle deciding section 58 decides a target turning angle ?d among the target turning angles ?g, ?y and ?p according to the detected vehicle speed V. A turning control section 60 controls the steered wheels to be turned into the target turning angle ?d.Type: ApplicationFiled: May 19, 2005Publication date: January 19, 2006Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Takeshi Goto, Tatsuo Sugitani, Ryuichi Kurosawa, Toshiyuki Mikida, Kenji Tozu
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Patent number: 5495326Abstract: An image forming apparatus for forming an image on a sheet supplied thereto, wherein a time period required for a first sheet passing a predetermined position in a sheet conveying path is measured, and the measured time period is compared with a previously set time period. The sheet supply operation is controlled so that, when the measured time period is shorter than the set time period, operations of supplying second and subsequent sheets are started with a time interval equal to the difference between the time periods, and, when the measured time period is equal to or longer than the set time period, operations of supplying second and subsequent sheets are started immediately.Type: GrantFiled: January 25, 1993Date of Patent: February 27, 1996Assignee: Sanyo Electric Co., Ltd.Inventor: Toshiyuki Mikida