Patents by Inventor Yusuke Kitazawa
Yusuke Kitazawa 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: 10576959Abstract: A control apparatus for a hybrid vehicle is configured to control the hybrid vehicle. The control apparatus is provided with: an arithmetic operator configured to arithmetically operate a pulsation compensating torque for compensating a pulsation component; an arithmetic operation controller configured to control the arithmetic operator (i) to arithmetically operate the pulsation compensating torque in a first cycle in a period that does not include a vertex portion in which the pulsation compensating torque is locally maximal or locally minimal and (ii) to arithmetically operate the pulsation compensating torque in a second cycle, a length of which is shorter than that of the first cycle, in a period that includes the vertex portion; and a torque controller configured to control the electric motor to output a torque including the pulsation compensating torque arithmetically operated by the arithmetic operator.Type: GrantFiled: February 14, 2018Date of Patent: March 3, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuta Tsukada, Yusuke Kitazawa
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Patent number: 10232842Abstract: The control apparatus executes a pulsation compensating control where pulsation compensating torque is calculated for suppressing torque pulsation of an internal combustion engine by a pulsation-compensating-torque calculating portion and an MG1 controlling portion controls a first motor generator to output the pulsation compensating torque, while executes a pressing control where pressing torque is calculated for preventing torque of a second motor generator from crossing 0 Nm by a pressing-torque calculating portion and an MG2 controlling portion controls the second motor generator to output the pressing torque.Type: GrantFiled: January 9, 2017Date of Patent: March 19, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takashi Kawai, Yusuke Kitazawa
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Publication number: 20180290659Abstract: A control apparatus for a hybrid vehicle includes: a first controller configured to perform first control of causing a rotation speed of an engine to approach a target rotation speed; and a second controller disposed separately from the first controller and configured to perform second control of reducing vibration due to fluctuation of the rotation speed of the engine by controlling a torque which is output from an electric motor connected to the engine. The second controller is configured to control the electric motor such that a torque associated with the second control is not output in a first frequency area which is a control frequency range of a transfer function of the first controller and to control the electric motor such that the torque associated with the second control is output in a second frequency area of a transfer function of the second controller which is higher than the first frequency area.Type: ApplicationFiled: April 3, 2018Publication date: October 11, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuta Tsukada, Yu Miyahara, Yusuke Kitazawa, Tetsuhiro Maki
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Publication number: 20180229711Abstract: A control apparatus for a hybrid vehicle is configured to control the hybrid vehicle. The control apparatus is provided with: an arithmetic operator configured to arithmetically operate a pulsation compensating torque for compensating a pulsation component; an arithmetic operation controller configured to control the arithmetic operator (i) to arithmetically operate the pulsation compensating torque in a first cycle in a period that does not include a vertex portion in which the pulsation compensating torque is locally maximal or locally minimal and (ii) to arithmetically operate the pulsation compensating torque in a second cycle, a length of which is shorter than that of the first cycle, in a period that includes the vertex portion; and a torque controller configured to control the electric motor to output a torque including the pulsation compensating torque arithmetically operated by the arithmetic operator.Type: ApplicationFiled: February 14, 2018Publication date: August 16, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuta TSUKADA, Yusuke KITAZAWA
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Patent number: 9746074Abstract: A vehicle transmission apparatus having a starting engagement friction element, which has friction plates and a hydraulic servo including a piston that is moved according to a supplied oil pressure to press the friction plates, which is controlled to be engaged when a vehicle is started by using at least a driving force of the internal combustion engine, and which transfers creep torque. A control device capable of receiving an accelerator operation amount signal and capable of outputting a command value that controls the oil pressure. The control device executes temporary increase control of temporarily increasing the command value, when the accelerator operation amount signal is turned on from a state where the accelerator operation amount signal is off and the command value is output so that the starting engagement friction element transfers the creep torque.Type: GrantFiled: January 25, 2013Date of Patent: August 29, 2017Assignee: AISIN AW CO., LTD.Inventors: Yusuke Kitazawa, Kohei Tsuda
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Publication number: 20170203754Abstract: The control apparatus executes a pulsation compensating control where pulsation compensating torque is calculated for suppressing torque pulsation of an internal combustion engine by a pulsation-compensating-torque calculating portion and an MG1 controlling portion controls a first motor generator to output the pulsation compensating torque, while executes a pressing control where pressing torque is calculated for preventing torque of a second motor generator from crossing 0 Nm by a pressing-torque calculating portion and an MG2 controlling portion controls the second motor generator to output the pressing torque.Type: ApplicationFiled: January 9, 2017Publication date: July 20, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takashi KAWAI, Yusuke KITAZAWA
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Publication number: 20140309898Abstract: A vehicle transmission apparatus having a starting engagement friction element, which has friction plates and a hydraulic servo including a piston that is moved according to a supplied oil pressure to press the friction plates, which is controlled to be engaged when a vehicle is started by using at least a driving force of the internal combustion engine, and which transfers creep torque. A control device capable of receiving an accelerator operation amount signal and capable of outputting a command value that controls the oil pressure. The control device executes temporary increase control of temporarily increasing the command value, when the accelerator operation amount signal is turned on from a state where the accelerator operation amount signal is off and the command value is output so that the starting engagement friction element transfers the creep torque.Type: ApplicationFiled: January 25, 2013Publication date: October 16, 2014Applicant: AISIN AW CO., LTDInventors: Yusuke Kitazawa, Kohei Tsuda
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Patent number: 6753893Abstract: A thermal head has a longitudinal substrate; a heat-retention layer made of a heat-retaining material, having at least a sticking-out section lying on one main surface of the substrate in a longitudinal direction at a constant width; a heating-resistor member made of a resistive material, formed at least on the sticking-out section of the heat-retention layer at a predetermined thickness; a common electrode provided as touching the heating-resistor member; a plurality of separated electrodes provided as facing a tip of the common electrode with a gap, at least an edge of each separated electrode touching the heating-resistor member, another edge of each separated electrode being connected to a driver circuit; and a protective layer formed on the heating-resistor member. A heating-resistor member portion provided on to the gap between the common electrode and the separated electrodes functions as a recording section.Type: GrantFiled: March 21, 2002Date of Patent: June 22, 2004Assignees: Kabushiki Kaisha Toshiba, Toshiba Hokuto Electronics Corp.Inventor: Yusuke Kitazawa
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Patent number: 6201557Abstract: A process for producing a protective layer or a primer layer for a heat-generating resistor for a thermal head by sputtering using a target comprising a sinter of a silicon nitride/silicon dioxide/magnesium oxide powder. By regulating the particle diameter of the powder, the target is prevented from suffering partial peeling during the sputtering.Type: GrantFiled: March 16, 1999Date of Patent: March 13, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Yusuke Kitazawa, Yasuhisa Takamura