Patents by Inventor Yasuyuki Yokouchi
Yasuyuki Yokouchi 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: 11828291Abstract: A motor device includes a motor, an input unit, a processing unit, and an electrical energy storage unit. The input unit accepts power supplied from a controller during a first period and receives at least a communication signal transmitted from the controller during a second period after the first period. The processing unit updates data for the motor in accordance with the communication signal received by the input unit. The electrical energy storage unit stores, based on the power supplied to the input unit, electrical energy for driving the processing unit.Type: GrantFiled: June 24, 2019Date of Patent: November 28, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Mitsuhiro Sakamoto, Shinsuke Kimura, Yasuyuki Yokouchi
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Publication number: 20210140441Abstract: A motor device includes a motor, an input unit, a processing unit, and an electrical energy storage unit. The input unit accepts power supplied from a controller during a first period and receives at least a communication signal transmitted from the controller during a second period after the first period. The processing unit updates data for the motor in accordance with the communication signal received by the input unit. The electrical energy storage unit stores, based on the power supplied to the input unit, electrical energy for driving the processing unit.Type: ApplicationFiled: June 24, 2019Publication date: May 13, 2021Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Mitsuhiro Sakamoto, Shinsuke Kimura, Yasuyuki Yokouchi
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Patent number: 10690138Abstract: A motor control device which controls a motor for driving a blower unit, comprises: a target motor output calculating section which calculates a target motor output which causes an air flow of air supplied from the blower unit to coincide with a target air flow; and an operation command generating section which obtains the motor output of the motor, and generates a command for controlling a physical amount of the motor such that the motor output coincides with the target motor output based on a result of comparison between the motor output and the target motor output; and the target motor output calculating section is configured to calculate the target motor output as a product of a polynomial of variables derived by dividing the target air flow by the motor speed, and a cube of the motor speed.Type: GrantFiled: May 10, 2013Date of Patent: June 23, 2020Assignee: Panasonic Intellectual Property Management Co., LTDInventors: Ryuta Sasaki, Yasuyuki Yokouchi, Yasushi Kato
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Patent number: 10469013Abstract: A motor control device at least includes a speed control part for controlling a motor rotation speed. The motor control device includes a torque correction means for suppressing variation in torque constant due to individual differences of motors. In addition, the motor control device corrects the torque constant by using a correction torque coefficient calculated based on an unloaded speed when a fixed voltage is applied. Alternatively, the torque constant is corrected using the correction torque coefficient calculated based on the motor applied voltage when the motor speed is fixed.Type: GrantFiled: February 27, 2019Date of Patent: November 5, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Mitsuhiro Sakamoto, Yasuyuki Yokouchi, Daisuke Sonoda, Ryuta Sasaki
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Publication number: 20190199257Abstract: A motor control device at least includes a speed control part for controlling a motor rotation speed. The motor control device includes a torque correction means for suppressing variation in torque constant due to individual differences of motors. In addition, the motor control device corrects the torque constant by using a correction torque coefficient calculated based on an unloaded speed when a fixed voltage is applied. Alternatively, the torque constant is corrected using the correction torque coefficient calculated based on the motor applied voltage when the motor speed is fixed.Type: ApplicationFiled: February 27, 2019Publication date: June 27, 2019Inventors: Mitsuhiro SAKAMOTO, Yasuyuki YOKOUCHI, Daisuke SONODA, Ryuta SASAKI
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Patent number: 10270377Abstract: A motor control device at least includes a speed control part for controlling a motor rotation speed. The motor control device includes a torque correction means for suppressing variation in torque constant due to individual differences of motors. In addition, the motor control device corrects the torque constant by using a correction torque coefficient calculated based on an unloaded speed when a fixed voltage is applied. Alternatively, the torque constant is corrected using the correction torque coefficient calculated based on the motor applied voltage when the motor speed is fixed.Type: GrantFiled: January 26, 2016Date of Patent: April 23, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Mitsuhiro Sakamoto, Yasuyuki Yokouchi, Daisuke Sonoda, Ryuta Sasaki
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Publication number: 20170350404Abstract: A motor controller of the present invention comprises units which obtain information indicative of a motor speed (?) and information indicative of motor torque (T), an air flow calculation section which calculates an air flow (Q) of a fan based on the motor speed (?) and the motor torque (T); and a speed command generation section which generates a speed command (?*) of a motor such that the air flow (Q) coincides with the predetermined air flow command (Q*).Type: ApplicationFiled: August 25, 2017Publication date: December 7, 2017Inventors: Ryuta SASAKI, Yasuyuki YOKOUCHI, Yasushi KATO, Toru TAZAWA
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Patent number: 9771944Abstract: A motor controller of the present invention comprises units which obtain information indicative of a motor speed (?) and information indicative of motor torque (T), an air flow calculation section which calculates an air flow (Q) of a fan based on the motor speed (?) and the motor torque (T); and a speed command generation section which generates a speed command (?*) of a motor such that the air flow (Q) coincides with the predetermined air flow command (Q*).Type: GrantFiled: September 13, 2012Date of Patent: September 26, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Ryuta Sasaki, Yasuyuki Yokouchi, Yasushi Kato, Toru Tazawa
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Publication number: 20170163194Abstract: A motor control device at least includes a speed control part for controlling a motor rotation speed. The motor control device includes a torque correction means for suppressing variation in torque constant due to individual differences of motors. In addition, the motor control device corrects the torque constant by using a correction torque coefficient calculated based on an unloaded speed when a fixed voltage is applied. Alternatively, the torque constant is corrected using the correction torque coefficient calculated based on the motor applied voltage when the motor speed is fixed.Type: ApplicationFiled: January 26, 2016Publication date: June 8, 2017Inventors: MITSUHIRO SAKAMOTO, YASUYUKI YOKOUCHI, DAISUKE SONODA, RYUTA SASAKI
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Patent number: 9214884Abstract: A motor driving device of the present invention is a motor driving device that incorporates so-called vector control of controlling a current applied to a motor winding in accordance with the position of a rotor. The motor driving device receives the input of a duty command value from a host controller via a command input port, for example. The motor driving device obtains a current command or a speed command as a command value such that the input duty command value is equal to the duty of a drive pulse output from an inverter. Then, the motor driving device performs vector control based on the obtained command value.Type: GrantFiled: April 1, 2014Date of Patent: December 15, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Daisuke Sonoda, Yasushi Kato, Yasuyuki Yokouchi, Mitsuhiro Sakamoto
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Publication number: 20150233380Abstract: A motor control device which controls a motor for driving a blower unit, comprises: a target motor output calculating section which calculates a target motor output which causes an air flow of air supplied from the blower unit to coincide with a target air flow; and an operation command generating section which obtains the motor output of the motor, and generates a command for controlling a physical amount of the motor such that the motor output coincides with the target motor output based on a result of comparison between the motor output and the target motor output; and the target motor output calculating section is configured to calculate the target motor output as a product of a polynomial of variables derived by dividing the target air flow by the motor speed, and a cube of the motor speed.Type: ApplicationFiled: May 10, 2013Publication date: August 20, 2015Inventors: Ryuta Sasaki, Yasuyuki Yokouchi, Yasushi Kato
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Publication number: 20150064023Abstract: A motor controller of the present invention comprises units which obtain information indicative of a motor speed (?) and information indicative of motor torque (T), an air flow calculation section which calculates an air flow (Q) of a fan based on the motor speed (?) and the motor torque (T); and a speed command generation section which generates a speed command (?*) of a motor such that the air flow (Q) coincides with the predetermined air flow command (Q*).Type: ApplicationFiled: September 13, 2012Publication date: March 5, 2015Applicant: PANASONIC CORPORATIONInventors: Ryuta Sasaki, Yasuyuki Yokouchi, Yasushi Kato, Toru Tazawa
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Publication number: 20140306626Abstract: A motor driving device of the present invention is a motor driving device that incorporates so-called vector control of controlling a current applied to a motor winding in accordance with the position of a rotor. The motor driving device receives the input of a duty command value from a host controller via a command input port, for example. The motor driving device obtains a current command or a speed command as a command value such that the input duty command value is equal to the duty of a drive pulse output from an inverter. Then, the motor driving device performs vector control based on the obtained command value.Type: ApplicationFiled: April 1, 2014Publication date: October 16, 2014Applicant: PANASONIC CORPORATIONInventors: Daisuke SONODA, Yasushi KATO, Yasuyuki YOKOUCHI, Mitsuhiro SAKAMOTO
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Patent number: 8344570Abstract: A rotor (21) is an interior permanent magnet rotor formed of a rotor core (24) in which a plurality of permanent magnets (25) are embedded at predetermined intervals. First protruding portions (26) and second protruding portions (27) are formed on an outer peripheral face of the rotor, the first protruding portions (26) each opposing the vicinity of a central portion of each of the permanent magnets and having a substantially arc-shaped cross section protruding outward and the second protruding portions (27) each opposing the vicinity of an end portion of each of the permanent magnets and protruding outward. One first protruding portion and two second protruding portions correspond to one permanent magnet. The formation of the first and second protruding portions as described above on the outer peripheral face of the rotor makes it possible to sufficiently reduce the torque ripple and the noise caused by the distortion of air-gap magnetic flux distribution.Type: GrantFiled: March 6, 2009Date of Patent: January 1, 2013Assignee: Panasonic CorporationInventors: Kiyomi Kawamura, Takashi Ogawa, Hiroshi Murakami, Yuichi Yoshikawa, Yasuyuki Yokouchi
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Patent number: 8297068Abstract: A motor control device controls a fan motor, and controls a motor speed so as to maintain a predetermined airflow value. For this, the motor control device includes an input terminal for inputting a first operation parameter indicating the motor speed or a second operation parameter indicating a motor torque. Moreover, the motor control device includes a motor-speed target value arithmetically-operating unit that calculates, using a predetermined airflow value and the motor torque, a necessary modified value for the motor speed at the predetermined time intervals. Further, the motor control device includes an output terminal that outputs an instruction speed of the motor based on the necessary modified value.Type: GrantFiled: March 7, 2008Date of Patent: October 30, 2012Assignee: Panasonic CorporationInventors: Yasuyuki Yokouchi, Yasushi Kato
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Publication number: 20110012465Abstract: A rotor (21) is an interior permanent magnet rotor formed of a rotor core (24) in which a plurality of permanent magnets (25) are embedded at predetermined intervals. First protruding portions (26) and second protruding portions (27) are formed on an outer peripheral face of the rotor, the first protruding portions (26) each opposing the vicinity of a central portion of each of the permanent magnets and having a substantially arc-shaped cross section protruding outward and the second protruding portions (27) each opposing the vicinity of an end portion of each of the permanent magnets and protruding outward. One first protruding portion and two second protruding portions correspond to one permanent magnet. The formation of the first and second protruding portions as described above on the outer peripheral face of the rotor makes it possible to sufficiently reduce the torque ripple and the noise caused by the distortion of air-gap magnetic flux distribution.Type: ApplicationFiled: March 6, 2009Publication date: January 20, 2011Applicant: PANASONIC CORPORATIONInventors: Kiyomi Kawamura, Takashi Ogawa, Hiroshi Murakami, Yuichi Yoshikawa, Yasuyuki Yokouchi
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Publication number: 20100101265Abstract: A motor control device controls a fan motor, and controls a motor speed so as to maintain a predetermined airflow value. For this, the motor control device includes an input terminal for inputting a first operation parameter indicating the motor speed or a second operation parameter indicating a motor torque. Moreover, the motor control device includes a motor-speed target value arithmetically-operating unit that calculates, using a predetermined airflow value and the motor torque, a necessary modified value for the motor speed at the predetermined time intervals. Further, the motor control device includes an output terminal that outputs an instruction speed of the motor based on the necessary modified value.Type: ApplicationFiled: March 7, 2008Publication date: April 29, 2010Applicant: Panasonic CorporationInventors: Yasuyuki Yokouchi, Yasushi Kato
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Patent number: 6844693Abstract: An electric motor position control apparatus in accordance with the present invention has a plurality of sets of control parameters including at least the proportional gain of a position control section and the proportional gain of a speed control section beforehand, wherein set selection and the measurement of the response state of an electric motor to a position command at the time when the electric motor is controlled by using the control parameters of the selected set are carried out sequentially, one preferable set is selected depending on the measured response state, the control parameters of the selected set are set, and the control parameters are changed as a set.Type: GrantFiled: March 6, 2003Date of Patent: January 18, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toru Tazawa, Tomokuni Iijima, Ichiro Oyama, Kazushige Narazaki, Kenichi Suzuki, Yasuyuki Yokouchi
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Publication number: 20040085035Abstract: An electric motor position control apparatus in accordance with the present invention has a plurality of sets of control parameters including at least the proportional gain of a position control section and the proportional gain of a speed control section beforehand, wherein set selection and the measurement of the response state of an electric motor to a position command at the time when the electric motor is controlled by using the control parameters of the selected set are carried out sequentially, one preferable set is selected depending on the measured response state, the control parameters of the selected set are set, and the control parameters are changed as a set.Type: ApplicationFiled: March 6, 2003Publication date: May 6, 2004Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Toru Tazawa, Tomokuni Iijima, Ichiro Oyama, Kazushige Narazaki, Kenichi Suzuki, Yasuyuki Yokouchi