Patents by Inventor Masanori Takagi
Masanori Takagi 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: 20120203430Abstract: Electric power steering system comprises an electric motor (9) for producing a steering assist force reducing a steering effort of a vehicle operator and a control unit (21) determining a control value for the electric motor, the control unit being configured to determine the control value by selecting a map representing a relationship between a vehicle state variable and a control value for each of a plurality of control modes. When switching control modes, the control unit gradually changes the control value from that obtained from a map corresponding to a preceding control mode to that of a following control mode. A different time period of gradual transition from the preceding control mode to the following control mode is selected depending on those control modes.Type: ApplicationFiled: October 12, 2010Publication date: August 9, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Yuichi Shimada, Kazuhiko Inaba, Taku Natsume, Masaya Kusatani, Masanori Takagi, Toshiharu Akashi, Kouji Nakamura, Akio Ueno
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Patent number: 7260451Abstract: A converter unit connected to a monitor apparatus for monitoring and controlling a plurality of air conditioners, including: PAC transmission software for transmitting a setting data from the monitor apparatus regarding a running start/stop state, a running node, an air quality and a temperature, respectively of the air conditioners, to a transmission path, and for receiving running data regarding a temperature and a pressure of a component during the refrigerating cycle from the transmission path; transmission software for receiving the setting data from the monitor apparatus and transmitting the running data to the monitor apparatus; and a converter to convert the running data for the PAC transmission software to a running data for the transmission software, and to convert the setting data for the transmission software to a setting data for the PAC transmission software, respectively, wherein the running data is collected from the control message at a predetermined interval, and the collected running data iType: GrantFiled: August 11, 2003Date of Patent: August 21, 2007Assignee: Hitachi, Ltd., Tokyo, Japan, as Trustee for the Benefit of Hitachi Air Conditioning Systems Co., Ltd., Tokyo, Japan, BeneficiaryInventors: Tadashi Takai, Masanori Takagi, Yukio Ito, Makoto Itoh
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Patent number: 7188702Abstract: An electric power steering apparatus is provided, which has a first device for detection of steering torque, a motor, a motor drive unit, a second device for determining a target current based upon at least a signal of steering torque, a third device for detection of a motor current, and a control unit for generating a signal for motor drive based upon at least a deviation between the target current and motor current and transmitting the signal for motor drive to the motor drive unit. The apparatus has a feature that the control unit includes a fourth device for weakening a magnetic field within the motor according to the deviation or a value computed based upon the deviation.Type: GrantFiled: May 16, 2003Date of Patent: March 13, 2007Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Masanori Takagi, Takashi Kuribayashi, Atsuhiko Yoneda
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Patent number: 7042179Abstract: An electric power steering apparatus using a brushless motor is disclosed. The electric power steering apparatus has a microcomputer for calculating a target current to the brushless motor on the basis of a torque signal outputted from a steering torque detecting part. The microcomputer has a table stored in ROM. The microcomputer calculates the angular position of the brushless motor by referring to the table on the basis of a signal outputted by a resolver.Type: GrantFiled: February 16, 2005Date of Patent: May 9, 2006Assignee: Honda Motor Co., Ltd.Inventors: Yoshinobu Mukai, Yasuhiro Nakano, Masanori Takagi, Hiroaki Horii, Osamu Tsurumiya, Fumihiro Morishita, Takashi Kuribayashi
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Publication number: 20050231145Abstract: An electric power steering apparatus using a brushless motor is disclosed. The electric power steering apparatus has a microcomputer for calculating a target current to the brushless motor on the basis of a torque signal outputted from a steering torque detecting part. The microcomputer has a table stored in ROM. The microcomputer calculates the angular position of the brushless motor by referring to the table on the basis of a signal outputted by a resolver.Type: ApplicationFiled: February 16, 2005Publication date: October 20, 2005Applicant: HONDA MOTOR CO., LTD.Inventors: Yoshinobu Mukai, Yasuhiro Nakano, Masanori Takagi, Hiroaki Horii, Osamu Tsurumiya, Fumihiro Morishita, Takashi Kuribayashi
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Patent number: 6925420Abstract: A service system for air conditioner is provided which offers a total solution to a wide range of fields, from the customer relationship management covering individual users, building owners and administrators and building management companies to the maintenance and management, manufacture, design, and development on the part of the manufacturer. The service system includes a monitoring center which has the customer database, an operation information database for storing operation information of air conditioners for each customer, and a device information database having device information on the air conditioners related with each customer of the customer database. The monitoring center, upon deciding that there is anomaly in the operation information, dens to the cellular phone over the Internet the information representing the content of the anomaly and the customer information and device information associated with the operation information which was judged abnormal.Type: GrantFiled: September 29, 2004Date of Patent: August 2, 2005Assignee: Hitachi, Ltd., trustee for the benefit of Hitachi Air Conditioning Systems Co., Ltd.Inventors: Makoto Ito, Tadashi Takai, Tomotsune Taira, Masanori Takagi, Yukio Ito
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Publication number: 20050045414Abstract: An electric power steering apparatus is provided, which has a first device for detection of steering torque, a motor, a motor drive unit, a second device for determining a target current based upon at least a signal of steering torque, a third device for detection of a motor current, and a control unit for generating a signal for motor drive based upon at least a deviation between the target current and motor current and transmitting the signal for motor drive to the motor drive unit. The apparatus has a feature that the control unit includes a fourth device for weakening a magnetic field within the motor according to the deviation or a value computed based upon the deviation.Type: ApplicationFiled: May 16, 2003Publication date: March 3, 2005Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHAInventors: Masanori Takagi, Takashi Kuribayashi, Atsuhiko Yoneda
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Publication number: 20050043924Abstract: A service system for air conditioners is provided which offers a total solution to a wide range of fields, from the customer relationship management covering individual users, building owners and administrators and building management companies to the maintenance and management, manufacture, design, and development on the part of the manufacturer. The service system includes a monitoring center which has a the customer database, an operation information database for storing operation information of air conditioners for each customer, and a device information database having device information on the air conditioners related with each customer of the customer database. The monitoring center, upon deciding that there is anomaly in the operation information, sends to the cellular phone over the Internet the information representing the content of the anomaly and the customer information and device information associated with the operation information which was judged abnormal.Type: ApplicationFiled: September 29, 2004Publication date: February 24, 2005Inventors: Makoto Ito, Tadashi Takai, Tomotsune Taira, Masanori Takagi, Yukio Ito
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Patent number: 6823288Abstract: A service system which includes the monitoring center which has a customer database, an operation information database for storing operation information of the air conditioners for each customer, and a device information database 203 having device information on the air conditioners related with each customer of the customer database. When the system decides that there is anomaly in the operation information, the monitoring center sends to the cellular phone over the Internet information representing the content of the anomaly and customer and device information associated with the operation information which was judged abnormal.Type: GrantFiled: September 5, 2003Date of Patent: November 23, 2004Assignee: Hitchi, Ltd.Inventors: Makoto Ito, Tadashi Takai, Tomotsune Taira, Masanori Takagi, Yukio Ito
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Patent number: 6810986Abstract: In an electric power steering apparatus, a motor control unit repetitively performs PI control based on feedback of motor current signals and motor drive control based on an electrical angle of a three-phase brushless motor while appropriately skipping the PI control. Thus, an execution cycle time of the PI control is set to be longer than that of the motor drive control.Type: GrantFiled: March 10, 2003Date of Patent: November 2, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventor: Masanori Takagi
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Patent number: 6719089Abstract: In en electric power steering apparatus, a motor controller unit controls PWM driving of a brushless motor for imparting a steering torque assist, on the basis of output signals of at least a steering torque detector section, motor current detector section and rotational angle detector section that includes a resolver. Either one of a predetermined frequency of the PWM driving and predetermined exciting frequency of the resolver is set to be an integral multiple of the other of the predetermined PWM driving frequency and the predetermined exciting frequency.Type: GrantFiled: December 4, 2002Date of Patent: April 13, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Atsuhiko Yoneda, Masanori Takagi, Yasuo Shimizu, Takashi Kuribayashi
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Publication number: 20040049320Abstract: An open network environment and a multi vendor system for an air conditioner is realized so that management and services can be made highly efficient. A management system for an air conditioner has a status database for storing collected running data, and a setting database for storing setting data of the air conditioner, the setting data including data. regarding a running stop state, a running mode, an air quantity and a temperature, respectively of the air conditioner, wherein the running data stored in the status database is read to monitor the air conditioner and the setting data is rewritten to control the air conditioner.Type: ApplicationFiled: August 11, 2003Publication date: March 11, 2004Inventors: Tadashi Takai, Masanori Takagi, Yukio Ito, Makoto Itoh
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Publication number: 20040044502Abstract: A service system for air conditioners is provided which offers a total solution to a wide range of fields, from the customer relationship management covering individual users, building owners and administrators and building management companies to the maintenance and management, manufacture, design, and development on the part of the manufacturer. The service system includes the monitoring center 1 which has the customer database 207, the operation information database 206 for storing operation information of the air conditioners 101 for each customer, and the device information database 203 having device information on the air conditioners 101 related with each customer of the customer database 207.Type: ApplicationFiled: September 5, 2003Publication date: March 4, 2004Inventors: Makoto Ito, Tadashi Takai, Tomotsune Taira, Masanori Takagi, Yukio Ito
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Patent number: 6647317Abstract: An open network environment and a multi vendor system for an air conditioner is realized so that management and services can be made highly efficient. A management system for an air conditioner has a status database for storing collected running data, and a setting database for storing setting data of the air conditioner, the setting data including data regarding a running stop state, a running mode, an air quantity and a temperature, respectively of the air conditioner, wherein the running data stored in the status database is read to monitor the air conditioner and the setting data is rewritten to control the air conditioner.Type: GrantFiled: May 7, 2001Date of Patent: November 11, 2003Inventors: Tadashi Takai, Masanori Takagi, Yukio Ito, Makoto Itoh
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Patent number: 6643611Abstract: A service system for air conditioners is provided which offers a total solution to a wide range of fields, from the customer relationship management covering individual users, building owners and administrators and building management companies to the maintenance and management, manufacture, design, and development on the part of the manufacturer. The service system includes the monitoring center 1 which has the customer database 207, the operation information database 206 for storing operation information of the air conditioners 101 for each customer, and the device information database 203 having device information on the air conditioners 101 related with each customer of the customer database 207.Type: GrantFiled: November 20, 2000Date of Patent: November 4, 2003Inventors: Makoto Ito, Tadashi Takai, Tomotsune Taira, Masanori Takagi, Yukio Ito
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Publication number: 20030178245Abstract: In an electric power steering apparatus, a motor control unit repetitively performs PI control based on feedback of motor current signals and motor drive control based on an electrical angle of a three-phase brushless motor while appropriately skipping the PI control. Thus, an execution cycle time of the PI control is set to be longer than that of the motor drive control.Type: ApplicationFiled: March 10, 2003Publication date: September 25, 2003Applicant: Honda Giken Kogyo Kabushiki KaishaInventor: Masanori Takagi
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Publication number: 20030106738Abstract: In en electric power steering apparatus, a motor controller unit controls PWM driving of a brushless motor for imparting a steering torque assist, on the basis of output signals of at least a steering torque detector section, motor current detector section and rotational angle detector section that includes a resolver. Either one of a predetermined frequency of the PWM driving and predetermined exciting frequency of the resolver is set to be an integral multiple of the other of the predetermined PWM driving frequency and the predetermined exciting frequency.Type: ApplicationFiled: December 4, 2002Publication date: June 12, 2003Applicant: Honda Giken Kogyo Kabushiki KaishaInventors: Atsuhiko Yoneda, Masanori Takagi, Yasuo Shimizu, Takashi Kuribayashi
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Patent number: 6547695Abstract: A control system for a hydraulically-operated transmission for a vehicle is disclosed. The transmission is connected to a crankshaft of an internal combustion engine and having a plurality of friction engagement elements. A working oil temperature of the transmission, a cooling water temperature of the engine, and an operating condition of the transmission are detected. An estimated value of the working oil temperature is calculated on the basis of the detected cooling water temperature and the detected operating condition of the transmission. A weighting factor is calculated according to the detected working oil temperature. A weighted average value of the working oil temperature and the estimated working oil temperature is calculated as an actual working oil temperature by using the weighting factor. A hydraulic pressure of the working oil is controlled according to the actual working oil temperature.Type: GrantFiled: October 24, 2001Date of Patent: April 15, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Toru Yamashita, Masatoshi Shimizu, Osahide Miyamoto, Masanori Takagi
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Publication number: 20020046618Abstract: A control system for a hydraulically-operated transmission for a vehicle is disclosed. The transmission is connected to a crankshaft of an internal combustion engine and having a plurality of friction engagement elements. A working oil temperature of the transmission, a cooling water temperature of the engine, and an operating condition of the transmission are detected. An estimated value of the working oil temperature is calculated on the basis of the detected cooling water temperature and the detected operating condition of the transmission. A weighting factor is calculated according to the detected working oil temperature. A weighted average value of the working oil temperature and the estimated working oil temperature is calculated as an actual working oil temperature by using the weighting factor. A hydraulic pressure of the working oil is controlled according to the actual working oil temperature.Type: ApplicationFiled: October 24, 2001Publication date: April 25, 2002Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHAInventors: Toru Yamashita, Masatoshi Shimizu, Osahide Miyamoto, Masanori Takagi
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Publication number: 20020029096Abstract: An open network environment and a multi vendor system for an air conditioner is realized so that management and services can be made highly efficient. A management system for an air conditioner has a status database for storing collected running data, and a setting database for storing setting data of the air conditioner, the setting data including data regarding a running stop state, a running mode, an air quantity and a temperature, respectively of the air conditioner, wherein the running data stored in the status database is read to monitor the air conditioner and the setting data is rewritten to control the air conditioner.Type: ApplicationFiled: May 7, 2001Publication date: March 7, 2002Inventors: Tadashi Takai, Masanori Takagi, Yukio Ito, Makoto Itoh