Patents by Inventor Yuji Takakura
Yuji Takakura 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: 10483967Abstract: A switching element driving circuit that includes a push-pull buffer circuit driving a switching element to be driven, the push-pull buffer circuit amplifying electrical power of a switching control signal and transmitting the amplified switching control signal to a control terminal of the switching element to be driven; a compensation resistor that connects the input to the output; and an input-side pull-down resistor that connects the input to a negative polarity side of the switching element to be driven.Type: GrantFiled: July 26, 2017Date of Patent: November 19, 2019Assignee: AISIN AW CO., LTD.Inventors: Yuji Takakura, Yasushi Nakamura
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Publication number: 20190326904Abstract: A switching element driving circuit that includes a push-pull buffer circuit driving a switching element to be driven, the push-pull buffer circuit amplifying electrical power of a switching control signal and transmitting the amplified switching control signal to a control terminal of the switching element to be driven; a compensation resistor that connects the input to the output; and an input-side pull-down resistor that connects the input to a negative polarity side of the switching element to be driven.Type: ApplicationFiled: July 26, 2017Publication date: October 24, 2019Applicant: AISIN AW CO., LTD.Inventors: Yuji TAKAKURA, Yasushi NAKAMURA
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Patent number: 10298220Abstract: A switching element drive circuit that drives a main switching element by providing a control terminal of the main switching element with a drive signal that has asymmetric positive and negative potentials with respect to a reference potential, the main switching element including a ground terminal, which is a source terminal or an emitter terminal, and to which the reference potential is connected.Type: GrantFiled: December 10, 2015Date of Patent: May 21, 2019Assignee: AISIN AW CO., LTD.Inventors: Yasushi Nakamura, Yuji Takakura
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Publication number: 20170373677Abstract: A switching element drive circuit that drives a main switching element by providing a control terminal of the main switching element with a drive signal that has asymmetric positive and negative potentials with respect to a reference potential, the main switching element including a ground terminal, which is a source terminal or an emitter terminal, and to which the reference potential is connected.Type: ApplicationFiled: December 10, 2015Publication date: December 28, 2017Applicant: AISIN AW CO., LTD.Inventors: Yasushi NAKAMURA, Yuji TAKAKURA
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Publication number: 20160329823Abstract: A power conversion device including at least two transformers having a first transformer and a second transformer, each for transforming a power between a primary coil and a secondary coil, wherein each secondary coil of the first transformer and the second transformer includes a positive output coil whose output voltage is positive, and a negative output coil whose output voltage is negative with respect to a reference voltage on a secondary side, and output powers of the positive output coil and the negative output coil are different from each other.Type: ApplicationFiled: January 19, 2015Publication date: November 10, 2016Applicant: AISIN AW CO., LTD.Inventors: Yasushi NAKAMURA, Yuji TAKAKURA
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Publication number: 20160105092Abstract: A discharge control device where the discharge circuit is configured by a series circuit including a discharging resistor and a discharge control switch; and the discharge control unit controls the discharge control switch to a non-conducting state during non-discharge control in which the discharge control is not executed, and controls the discharge control switch to a conducting state during execution of the discharge control.Type: ApplicationFiled: March 18, 2014Publication date: April 14, 2016Applicant: AISIN AW CO., LT.DInventors: Yuji TAKAKURA, Yasushi NAKAMURA
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Patent number: 9037347Abstract: Described herein are devices and methods for controlling inclination in a vehicle. In certain aspects, inclination of the vehicle can be controlled with an inclination control processing section that includes a first control value limiting processing section which calculates a moving amount of the centroid, calculates a maximum angular acceleration, and limits a variation of the control value for inclination control on the basis of the maximum angular acceleration.Type: GrantFiled: January 27, 2012Date of Patent: May 19, 2015Assignee: EQUOS RESEARCH CO., LTD.Inventors: Koki Hayashi, Yuji Takakura, Shinji Yamamoto
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Patent number: 8831833Abstract: The vehicle includes a vehicle body having a steering section and a drive section connected together; a steerable wheel which steers the vehicle body; a drive wheel which drives the vehicle body; an inclination actuator apparatus for inclining the steering section or the drive section in a turning direction; a plurality of sensors which detect lateral accelerations; yaw angular velocity detection means; vehicle speed detection means; and a control apparatus which controls the inclination of the vehicle body by controlling the inclination actuator apparatus. The control apparatus performs feedback control on the basis of the lateral accelerations, calculates a link angular velocity predicted value from the derivative value of the yaw angular velocity and the vehicle speed, and controls the inclination of the vehicle body by performing feedforward control while using the calculated link angular velocity predicted value.Type: GrantFiled: January 18, 2012Date of Patent: September 9, 2014Assignee: Equos Research Co., Ltd.Inventors: Koki Hayashi, Yuji Takakura, Shinji Yamamoto
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Publication number: 20130304318Abstract: Described herein are devices and methods for controlling inclination in a vehicle. In certain aspects, inclination of the vehicle can be controlled with an inclination control processing section that includes a first control value limiting processing section which calculates a moving amount of the centroid, calculates a maximum angular acceleration, and limits a variation of the control value for inclination control on the basis of the maximum angular acceleration.Type: ApplicationFiled: January 27, 2012Publication date: November 14, 2013Applicant: EQUOS RESEARCH CO., LTD.Inventors: Koki Hayashi, Yuji Takakura, Shinji Yamamoto
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Publication number: 20130297152Abstract: The vehicle includes a vehicle body having a steering section and a drive section connected together; a steerable wheel which steers the vehicle body; a drive wheel which drives the vehicle body; an inclination actuator apparatus for inclining the steering section or the drive section in a turning direction; a plurality of sensors which detect lateral accelerations; yaw angular velocity detection means; vehicle speed detection means; and a control apparatus which controls the inclination of the vehicle body by controlling the inclination actuator apparatus. The control apparatus performs feedback control on the basis of the lateral accelerations, calculates a link angular velocity predicted value from the derivative value of the yaw angular velocity and the vehicle speed, and controls the inclination of the vehicle body by performing feedforward control while using the calculated link angular velocity predicted value.Type: ApplicationFiled: January 18, 2012Publication date: November 7, 2013Applicant: EQUOS RESEARCH CO., LTD.Inventors: Koki Hayashi, Yuji Takakura, Shinji Yamamoto