Patents by Inventor Masaaki Nakajima
Masaaki Nakajima 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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Publication number: 20240085252Abstract: [Problem] To Provide a fabric-like sensor in which an output signal can be improved when in use and damage or fracture of a sensor element hardly occurs, and a fabric-like sensor device using it. Solution In a fabric-like sensor S having a fabric base material 1 and a line-shaped sensor element 2, at least one line-shaped cavity portion 11 is provided inside the fabric base material 1, and at least a part of the cavity portion 11 is composed of a raw fabric at least a part of the cavity portion has no elasticity in a line direction of the cavity portion 11, and further the line-shaped sensor element 2 is arranged in a state of not being substantially constrained or fixed in at least one of cavity portions in a fabric 1.Type: ApplicationFiled: February 2, 2022Publication date: March 14, 2024Applicants: TOHO KASEI CO., LTD., SHINDO CO., LTD.Inventors: Ken OGASAWARA, Satoshi SHIMIZU, Masaaki SASAKI, Manabu NAKAJIMA, Masahiro MURAO, Ken MIYAZAKI
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Patent number: 5930136Abstract: In order to control an apparatus, such as a rolling mill, a control device may use a pre-set operation pattern to generate a pre-set command signal, which is then modified. That first modification may be part of a feedback loop in dependence on the variation of a variable operation device of the apparatus, on a plurality of pre-set signals may be combined by fuzzy logic. Then the relationship between the modified pre-set command signal and the variation of the variable operation device is investigated to generate a compensation signal which is used to modify further the pre-set command signal. In a feedback loop, that further modification may compensate for changes in the operating point of the loop, due to changes in the apparatus being controlled. In a fuzzy logic arrangement, the compensation signal may be a further control pattern developed by the control device itself, which is combined with the pre-set patterns by fuzzy logic. The control device may be in the form of a series of modules.Type: GrantFiled: July 2, 1997Date of Patent: July 27, 1999Assignee: Hitachi, Ltd.Inventors: Masaaki Nakajima, Satoshi Hattori, Yutaka Saito, Yasunori Katayama, Yasuo Morooka, Junzo Kawakami
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Patent number: 5548597Abstract: A failure diagnosis apparatus for a control system at which plural sensors are provided, comprises a means for extracting correlations among output signals from the predetermined groups of the sensors based on the output signals in the normal operations of the control system by such a means as a quantization method of quantizing a signal space, a means for making up an abnormal degree of the output signals from each predetermined group of the sensors by comparing output signals to be examined from each predetermined group of the sensors and the correlation corresponding to the group of the sensors, and a means for estimating the reliability of each sensor by using the abnormal degrees and for identifying the sensor outputting an abnormal signal.Type: GrantFiled: October 13, 1994Date of Patent: August 20, 1996Assignee: Hitachi, Ltd.Inventors: Masahiro Kayama, Yasuo Morooka, Yoichi Sugita, Masaaki Nakajima
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Patent number: 5541832Abstract: In order to control an apparatus, such as a rolling mill, a control device may use a pre-set operation pattern to generate a pre-set command signal, which is then modified.That first modification may be part of a feedback loop in set command signal, which is then modified. That first modification may be part of a feedback loop in logic. Then the relationship between the modified pre-set command signal and the variation of the variable operation device is investigated to generate a compensation signal which is used to modify further the pre-set command signal. In a feedback loop, that further modification may compensate for changes in the operating point of the loop, due to changes in the apparatus being controlled. In a fuzzy logic arrangement, the compensation signal may be a further control pattern developed by the control device itself, which is combined with the pre-set patterns by fuzzy logic. The control device may be in the form of a series of modules.Type: GrantFiled: March 30, 1995Date of Patent: July 30, 1996Assignee: Hitachi, Ltd.Inventors: Masaaki Nakajima, Satoshi Hattori, Yutaka Saito, Yasunori Katayama, Yasuo Morooka, Junzo Kawakami
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Patent number: 5430642Abstract: In order to control an apparatus, such as a rolling mill, a control device may use a pre-set operation pattern to generate a preset command signal, which is then modified. That first modification may be part of a feedback loop in dependence on the variation of a variable operation device of the apparatus, on a plurality of pre-set signals may be combined by fuzzy logic. Then the relationship between the modified pre-set command signal and the variation of the variable operation device is investigated to generate a compensation signal which is used to modify further the pre-set command signal. In a feedback loop, that further modification may compensate for changes in the operating point of the loop, due to changes in the apparatus being controlled. In a fuzzy logic arrangement, the compensation signal may be a further control pattern developed by the control device itself, which is combined with the pre-set patterns by fuzzy logic. The control device may be in the form of a series of modules.Type: GrantFiled: June 4, 1991Date of Patent: July 4, 1995Assignee: Hitachi, Ltd.Inventors: Masaaki Nakajima, Satoshi Hattori, Yutaka Saito, Yasunori Katayama, Yasuo Morooka, Junzo Kawakami
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Patent number: 5414619Abstract: A method and an apparatus for controlling an object by giving commands to actuators that control the object to perform desired operations, wherein relationships between respective values of parameters of the model for the controlled object and the input/output states of the model are obtained by learning, the obtained relationships are stored in a memory unit as a result of the learning, parameter values of the model are decided by referring to the learning result stored in the memory unit based on the input/output measured values of the controlled object, and commands are obtained based on the decided parameter values and the obtained commands are given to the actuators.Type: GrantFiled: January 15, 1993Date of Patent: May 9, 1995Assignee: Hitachi, Ltd.Inventors: Yasunori Katayama, Yasuo Morooka, Takashi Okada, Masaaki Nakajima, Satoshi Hattori, Masakane Shigyo
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Patent number: 5331565Abstract: A control system for controlling a plurality of control elements, which are effective to control of a given controlled system, is disclosed. In this control system, a characteristic value representing the characteristic of a given controlled system to be controlled is detected, and respective optimum manipulated variables of the plurality of control elements are derived on the basis of the detected characteristic value.Type: GrantFiled: October 8, 1993Date of Patent: July 19, 1994Assignee: Hitachi, Ltd.Inventors: Satoshi Hattori, Shigeru Ueki, Yutaka Saito, Tetsuo Manchu, Yasunori Katayama, Yasuo Morooka, Hiroshi Matsumoto, Masaaki Nakajima
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Patent number: 5303385Abstract: A control system for controlling a plurality of control elements, which are effective to control of a given controlled system, is disclosed. In this control system, a characteristic value representing the characteristic of a given controlled system to be controlled is detected, and respective optimum manipulated variables of the plurality of control elements are derived on the basis of the detected characteristic value.Type: GrantFiled: March 9, 1990Date of Patent: April 12, 1994Assignee: Hitachi, Ltd.Inventors: Satoshi Hattori, Shigeru Ueki, Yutaka Saito, Tetsuo Manchu, Yasunori Katayama, Yasuo Morooka, Hiroshi Matsumoto, Masaaki Nakajima
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Patent number: 5143368Abstract: In a paper dodging device having a pair of upper and lower high-speed belts for feeding paper onto a low-speed paper, the delivery side of the upper high-speed belt is overlapped above the inlet side of the low-speed belt, and a snubber is disposed above the inlet side of the low-speed belt, the snubber having an outer diameter gradually increasing towards the rear side with respect to the rotational direction of the snubber and having paper dropping portions formed at the outer peripheral end of increasing diameter for peeling the rear end of paper from the upper high-speed belt. When paper is fed from the high-speed belts onto the low-speed belt, the paper is dropped by the outer peripheral surface of increasing diameter of the rotating snubber, and the rear end of paper is peeled by the paper dropping portion and correctly dropped onto the low-speed belt, thereby preventing contact between foregoing paper and following paper and thus preventing generation of flaws or paper jamming.Type: GrantFiled: May 31, 1991Date of Patent: September 1, 1992Assignee: Komori CorporationInventors: Hirotaka Kiyota, Masaaki Nakajima
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Patent number: 5088719Abstract: A paper mechanism for an offset printing press suppresses shocks to the paper upon reaching a braking roller, thus preventing damage to the front and trailing edges of the paper, one preferred embodiment including a slow down pulley, another preferred embodiment including a device for peeling paper from an upper high speed belt and dropping a rear edge of the paper unto a low speed belt.Type: GrantFiled: September 5, 1990Date of Patent: February 18, 1992Assignee: Komori CorporationInventors: Hirotaka Kiyota, Tomoo Kaneta, Masaaki Nakajima, Masakazu Kurihara