Patents by Inventor Tetsuya Asai
Tetsuya Asai 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: 9483036Abstract: This disclosure discloses a motor control apparatus including a current conversion part, a voltage control part, a current detection part, and a phase compensation part. The current conversion part generates a voltage command on the basis of a current deviation between a current command and an estimated current. The voltage control part controls an output voltage to a motor. The current detection part detects a motor current. The phase compensation part inputs the detected motor current and the voltage command and outputs, as the estimated current, the motor current in which a delay in phase of the motor current relative to the current command has been compensated.Type: GrantFiled: March 25, 2015Date of Patent: November 1, 2016Assignee: KABUSHIKI KAISHA YASKAWA DENKIInventors: Yasuhiko Kaku, Tetsuya Asai
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Patent number: 9471047Abstract: This disclosure discloses a motor control apparatus including a current conversion part, a voltage control part, a current detection part, and a current estimation part. The current conversion part generates a voltage command on the basis of a current deviation between a current command and an estimated current. The voltage control part controls an output voltage to a motor. The current detection part detects a motor current. The current estimation part inputs the detected motor current and the voltage command and outputs the motor current in which an influence by a disturbance has been compensated for as the estimated current.Type: GrantFiled: March 25, 2015Date of Patent: October 18, 2016Assignee: KABUSHIKI KAISHA YASKAWA DENKIInventors: Yasuhiko Kaku, Tetsuya Asai
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Patent number: 9426355Abstract: An imaging apparatus generates a GUI screen image for operating the imaging apparatus. A controller controls the generation of the GUI screen image upon detecting a predetermined operation.Type: GrantFiled: July 2, 2012Date of Patent: August 23, 2016Assignee: Sony CorporationInventors: Isao Sasaki, Riuzou Nagatsuka, Emi Arakawa, Tetsuya Asai, Masaki Mikamo, Takashi Nunomaki, Hisashi Ohashi, Kenji Tsushio, Mayumi Kamiya, Kenji Yoshida, Takeshi Harada, Keiki Fukuda
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Publication number: 20150198935Abstract: This disclosure discloses a motor control apparatus including a current conversion part, a voltage control part, a current detection part, and a phase compensation part. The current conversion part generates a voltage command on the basis of a current deviation between a current command and an estimated current. The voltage control part controls an output voltage to a motor. The current detection part detects a motor current. The phase compensation part inputs the detected motor current and the voltage command and outputs, as the estimated current, the motor current in which a delay in phase of the motor current relative to the current command has been compensated.Type: ApplicationFiled: March 25, 2015Publication date: July 16, 2015Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Yasuhiko KAKU, Tetsuya ASAI
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Publication number: 20150198934Abstract: This disclosure discloses a motor control apparatus including a current conversion part, a voltage control part, a current detection part, and a current estimation part. The current conversion part generates a voltage command on the basis of a current deviation between a current command and an estimated current. The voltage control part controls an output voltage to a motor. The current detection part detects a motor current. The current estimation part inputs the detected motor current and the voltage command and outputs the motor current in which an influence by a disturbance has been compensated for as the estimated current.Type: ApplicationFiled: March 25, 2015Publication date: July 16, 2015Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Yasuhiko KAKU, Tetsuya ASAI
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Patent number: 8350553Abstract: An object of the present invention is to generate a reference voltage that is stable in relation to manufacturing process variations, by matching the operating regions of the MOSFETs contributing to generation of the reference voltage.Type: GrantFiled: July 16, 2008Date of Patent: January 8, 2013Assignee: National University Corporation Hokkaido UniversityInventors: Tetsuya Hirose, Tetsuya Asai, Yoshihito Amemiya, Kenichi Ueno
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Publication number: 20120311483Abstract: An imaging apparatus generates a GUI screen image for operating the imaging apparatus. A controller controls the generation of the GUI screen image upon detecting a predetermined operation.Type: ApplicationFiled: July 2, 2012Publication date: December 6, 2012Applicant: Sony CorporationInventors: Isao Sasaki, Riuzou Nagatsuka, Emi Arakawa, Tetsuya Asai, Masaki Mikamo, Takashi Nunomaki, Hisashi Ohashi, Kenji Tsushio, Mayumi Kamiya, Kenji Yoshida, Takeshi Harada, Keiki Fukuda
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Patent number: 8214761Abstract: The present invention is to provide an imaging apparatus superior in operability and visibility at the time of setting and adjusting functions thereof. The apparatus includes GUI screen image generating means for generating a GUI screen image for operating the imaging apparatus to display the GUI screen image on image display means; operating means for operating the GUI screen image displayed on the image display means; controlling means for controlling the imaging apparatus in accordance with the operation of the GUI screen image by the operating means; storing means for storing hierarchy type main menu information; menu generating means; and menu editing means capable of editing the unique menu information generated by the menu generating means.Type: GrantFiled: May 19, 2004Date of Patent: July 3, 2012Assignee: Sony CorporationInventors: Isao Sasaki, Riuzou Nagatsuka, Emi Arakawa, Tetsuya Asai, Masaki Mikamo, Takashi Nunomaki, Hisashi Ohashi, Kenji Tsushio, Mayumi Kamiya, Kenji Yoshida, Takeshi Harada, Keiki Fukuda
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Patent number: 7976258Abstract: There is provided a screw treated by a chemical conversion coating of trivalent chromium having a torque characteristic approximately equivalent to a screw of a hexavalent chromate treatment. For the purpose, on a surface of a bolt, a zinc plating layer is formed by a zinc plating treatment. On the layer, a chemical conversion coating of trivalent chromium is also formed by a treatment of chemical conversion coatings of trivalent chromium. The coating is formed to be thin and soft so that the zinc-based plating layer can be exposed on the surface due to rubbing off of the chemical conversion coating of trivalent chromium at a contact portion to a fastened member of the bolt by tightening the bolt.Type: GrantFiled: June 12, 2006Date of Patent: July 12, 2011Assignees: Saga Tekkohsho Co., Ltd., Honda Motor Co., Ltd.Inventors: Tetsuya Asai, Yoshihiro Takitani, Katsuhiro Tsukiyama, Takehiko Egawa
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Publication number: 20100164461Abstract: An object of the present invention is to generate a reference voltage that is stable in relation to manufacturing process variations, by matching the operating regions of the MOSFETs contributing to generation of the reference voltage.Type: ApplicationFiled: July 16, 2008Publication date: July 1, 2010Inventors: Tetsuya Hirose, Tetsuya Asai, Yoshihito Amemiya, Kenichi Ueno
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Publication number: 20090290953Abstract: There is provided a screw treated by a chemical conversion coating of trivalent chromium having a torque characteristic approximately equivalent to a screw of a hexavalent chromate treatment. For the purpose, on a surface of a bolt, a zinc plating layer is formed by a zinc plating treatment. On the layer, a chemical conversion coating of trivalent chromium is also formed by a treatment of chemical conversion coatings of trivalent chromium. The coating is formed to be thin and soft so that the zinc-based plating layer can be exposed on the surface due to rubbing off of the chemical conversion coating of trivalent chromium at a contact portion to a fastened member of the bolt by tightening the bolt.Type: ApplicationFiled: June 12, 2006Publication date: November 26, 2009Inventors: Tetsuya Asai, Yoshihiro Takitani, Katsuhiro Tsukiyama, Takehiko Egawa
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Patent number: 7387691Abstract: A hot forged non-heat treated steel for induction hardening, comprising by mass percent, C: 0.35 to 0.45%, Si: 0.20 to 0.60%, Mn: 0.40 to 0.80%, S: 0.040 to 0.070%, Cr: 0.10 to 0.40%, Ti: 0.020 to 0.100%, Ca: 0.0005 to 0.0050%, B: 0.0005 to 0.0030%, O: 0.0015 to 0.0050%, Mo: 0 to 0.05%, P: 0.025% or less, V: 0.03% or less, Al: 0.009% or less and N: 0.0100% or less, and the balance being Fe and impurities, with Fn1=C+(Si/10)+(Mn/5)+(5Cr/22)+1.65V?(5/7S)+1.51×(Ti?3.4N)?0.63, Ca/O?1.0, and 25.9×Fn1+27.5×(Ti?3.4N)?7.9?5.7, has more excellence in the machinability than a conventional steel and also has fatigue strength equal to or more than that of a conventional steel, while using the steel product in a hot forged state as a starting material.Type: GrantFiled: February 24, 2006Date of Patent: June 17, 2008Assignees: Sumitomo Metal Industries, Ltd., Honda Motor Co., Ltd.Inventors: Daisuke Suzuki, Hitoshi Matsumoto, Hideki Imataka, Hayato Onda, Tetsuya Asai
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Publication number: 20080000553Abstract: Soft-nitrided parts wherein a ferrite grain in the diffusion layer does not have a ?? nitride of more than 20 ?m in the longitudinal axis, which is made of a non-heat treated steel that has a chemical composition of, by mass %, C: 0.30 to 0.45%, Si: 0.1 to 0.5%, Mn: 0.6 to 1.0%, Ti: 0.005 to 0.1%, N: 0.010 to 0.030%, and the balance Fe and impurities, and that has a mixed microstructure of bainite and ferrite whose bainite fraction is 5 to 90% or a mixed microstructure of bainite, ferrite and pearlite whose bainite fraction is 5 to 90%. The non-heat treated steel may contain one or more elements of 0.001 to 0.1% of Nb, 0.01 to 1.0% of Mo:, 0.01 to 1.0% of Cu, 0.01 to 1.0% of Ni and 0.001 to 0.005% of B, 0.01 to 0.1% of S and 0.0001 to 0.005% of Ca. This invention provides machinery parts, based on this non-heat treated steel for soft-nitriding, which has further improved high fatigue strength and excellent bending straightening property after soft-nitrided even omitting thermal refining.Type: ApplicationFiled: August 24, 2007Publication date: January 3, 2008Inventors: Naoyuki Sano, Hitoshi Matsumoto, Takayuki Nakatani, Yoshihiko Kamada, Masaki Amano, Tetsuya Asai
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Publication number: 20070144619Abstract: A nitrocarburized microalloyed steel member consists of a microalloyed steel that includes a nitrocarburized layer on a surface, a cross-sectional structure of which steel except for the nitrocarburized layer includes a ferrite and pearlite structure. The microalloyed steel mainly consists of Fe and has a composition: C having a content of 0.30 mass % or more and 0.50 mass % or less; Si having a content of 0.05 mass % or more and 0.30 mass % or less; Mn having a content of 0.50 mass % or more and 1.00 mass % or less; S having a content of 0.03 mass % or more and 0.20 mass % or less; Cu having a content of 0.05 mass % or more and 0.60 mass % or less; Ni having a content of 0.02 mass % or more and 1.00 mass % or less; and Cr having a content of 0.05 mass % or more and 0.30 mass % or less. If the contents of the Cu, the Ni, and the Cr are represented by WCu, WNi, and WCr mass %, respectively, and composition parameters F1 and F2 are 185WCr+50WCu and 8+4WNi+1.Type: ApplicationFiled: May 22, 2006Publication date: June 28, 2007Inventors: Tetsuya Asai, Yoshihiro Takitani, Masaki Amano, Makoto Hobo, Kazuyoshi Kimura, Katsunori Takada
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Publication number: 20060238625Abstract: The present invention is to provide an imaging apparatus superior in operability and visibility at the time of setting and adjusting functions thereof. The apparatus includes GUI screen image generating means for generating a GUI screen image for operating the imaging apparatus to display the GUI screen image on image display means; operating means for operating the GUI screen image displayed on the image display means; controlling means for controlling the imaging apparatus in accordance with the operation of the GUI screen image by the operating means; storing means for storing hierarchy type main menu information; menu generating means; and menu editing means capable of editing the unique menu information generated by the menu generating means.Type: ApplicationFiled: May 19, 2004Publication date: October 26, 2006Applicant: Sony CorporationInventors: Isao Sasaki, Riuzou Nagatsuka, Emi Arakawa, Tetsuya Asai, Masaki Mikamo, Takashi Nunomaki, Hisashi Ohashi, Kenji Tsushio, Mayumi Kamiya, Kenji Yoshida, Takeshi Harada, Keiki Fukuda
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Publication number: 20060137771Abstract: A hot forged non-heat treated steel for induction hardening, comprising by mass percent, C: 0.35 to 0.45%, Si: 0.20 to 0.60%, Mn: 0.40 to 0.80%, S: 0.040 to 0.070%, Cr: 0.10 to 0.40%, Ti: 0.020 to 0.100%, Ca: 0.0005 to 0.0050%, B: 0.0005 to 0.0030%, 0: 0.0015 to 0.0050%, Mo: 0 to 0.05%, P: 0.025% or less, V: 0.03% or less, Al: 0.009% or less and N: 0.0100% or less, and the balance being Fe and impurities, with Fn1=C+(Si/10)+(Mn/5)+(5Cr/22)+1.65V?(5/7S)+1.51×(Ti?3.4N)?0.63, Ca/O?1.0, and 25.9×Fn1+27.5×(Ti?3.4N)?7.9?5.7, has more excellence in the machinability than a conventional steel and also has fatigue strength equal to or more than that of a conventional steel, while using the steel product in a hot forged state as a starting material.Type: ApplicationFiled: February 24, 2006Publication date: June 29, 2006Inventors: Daisuke Suzuki, Hitoshi Matsumoto, Hideki Imataka, Hayato Onda, Tetsuya Asai