Patents by Inventor Masayuki UEMATSU
Masayuki UEMATSU 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: 11079444Abstract: An insulation detector for highly accurately detecting or measuring, with a simple configuration, insulation resistance of a load or an apparatus to a ground or a housing and connected to an electric apparatus including one or both of an intra-apparatus capacitor and a battery, the insulation detector including an intra-insulation detector capacitor, a voltage detecting unit that detects a voltage of the intra-insulation detector capacitor, and a current-path forming switch for connecting the ground or the housing, the intra-apparatus capacitor, and the intra-insulation detector capacitor in series and forming a current path including insulation resistance of the electric apparatus. The insulation detector measures the insulation resistance by measuring a time constant of a change in the voltage of the intra-insulation detector capacitor.Type: GrantFiled: August 7, 2018Date of Patent: August 3, 2021Assignee: Mitsubishi Electric CorporationInventors: Taichiro Tamida, Masayuki Uematsu, Akira Tanabe, Yoshitomo Hayashi, Yoji Tsutsumishita, Kosuke Tsujikawa
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Patent number: 11003159Abstract: A numerical control device includes a drive-shaft movement-amount estimation unit to estimate a first movement amount of a first object that is a target to be moved by a first drive shaft by using a first drive signal, an undriven-object movement-amount estimation unit to estimate a second movement amount of a second object in a three dimensional space, which is generated due to a drive force of the first drive shaft, by using the first drive signal, a correction-amount calculation unit to calculate a correction amount for the first drive signal on the basis of the first movement amount and the second movement amount, and a first correction-signal output unit to output a first corrected drive signal obtained by correcting the first drive signal by the correction amount to a drive unit to drive the first drive shaft.Type: GrantFiled: December 8, 2016Date of Patent: May 11, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshihiro Azuma, Tomoya Fujita, Masayuki Uematsu, Goh Sato
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Patent number: 10940559Abstract: A laser processing machine includes a processing head having a sensor, and a control unit to which a signal from the sensor is inputted. The control unit determines, by the signal, whether a drive shaft for the processing head needs to be adjusted. When the drive shaft is a state of needing adjustment, the control unit informs a display unit that the drive shaft is in a state of needing adjustment, and adjusts the drive shaft for the processing head by comparing data of a signal from the sensor with prestored data obtained during normal operation, in a different process than a laser processing process.Type: GrantFiled: October 19, 2017Date of Patent: March 9, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshiki Koshimae, Tomonori Mukae, Masayuki Uematsu, Hiroki Muraoka
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Patent number: 10732602Abstract: A numerical control apparatus includes: a numerical control unit that generates a command position; a drive control unit that is connected to the numerical control unit; and a signal measurement unit that is connected to the numerical control unit and the drive control unit. The drive control unit generates a command controlling a drive unit connected to a control target such that the control target follows the command position, and generates indicator signal data to be output to the numerical control unit and the signal measurement unit. The numerical control unit includes an arithmetic unit that performs processing of acquiring the indicator signal data as first indicator signal data and second indicator signal data, comparing the two indicator signal data, calculating a communication delay of the second indicator signal data with respect to the first indicator signal data, and determining input time of the measured signal.Type: GrantFiled: May 12, 2015Date of Patent: August 4, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Masayuki Uematsu, Tomoya Fujita
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Patent number: 10543574Abstract: A machine motion trajectory measuring apparatus includes a three-axis acceleration sensor measuring acceleration of a motion-trajectory measurement subject and outputting the result as an acceleration sensor signal, a sensor signal separation unit separating the acceleration sensor signal into two or more frequency bands, a motor signal separation unit separating a detection position signal into the frequency bands identical to those of the sensor signal separation unit, a data calibration unit calibrating the acceleration sensor signal in each of the two or more frequency bands by using the acceleration sensor signal separated by the sensor signal separation unit and the detection position signal separated by the motor signal separation unit and obtaining a motion trajectory component in each of the two or more frequency bands, and a motion trajectory calculation unit coupling the motion trajectory components in the two or more frequency bands and outputting the result as a motion trajectory.Type: GrantFiled: November 22, 2016Date of Patent: January 28, 2020Assignee: Mitsubishi Electric CorporationInventors: Tomoya Fujita, Masayuki Uematsu
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Publication number: 20190361467Abstract: A control parameter adjustment apparatus that adjusts control parameters of a servo control unit and a command-value generation unit that control a machine apparatus including a drive shaft includes a parameter input unit to receive an input of a design parameter that characterizes a property of the machine apparatus, an adjustment function selection unit to select a control parameter to be adjusted from control parameters that correspond to functions of the servo control unit and the command-value generation unit on the basis of the received design parameter, and an adjustment execution unit to execute adjustment of the control parameter selected by the adjustment function selection unit.Type: ApplicationFiled: May 15, 2017Publication date: November 28, 2019Applicant: Mitsubishi Electric CorporationInventors: Tomoya FUJITA, Goh SATO, Masayuki UEMATSU, Masahiro OZAWA, Toshiaki KIMATA, Yukihiro IUCHI
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Publication number: 20190351506Abstract: A laser processing machine includes a processing head having a sensor, and a control unit to which a signal from the sensor is inputted. The control unit determines, by the signal, whether a drive shaft for the processing head needs to be adjusted. When the drive shaft is a state of needing adjustment, the control unit informs a display unit that the drive shaft is in a state of needing adjustment, and adjusts the drive shaft for the processing head by comparing data of a signal from the sensor with prestored data obtained during normal operation, in a different process than a laser processing process.Type: ApplicationFiled: October 19, 2017Publication date: November 21, 2019Applicant: Mitsubishi Electric CorporationInventors: Toshiki KOSHIMAE, Tomonori MUKAE, Masayuki UEMATSU, Hiroki MURAOKA
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Publication number: 20190302729Abstract: A numerical control device includes a drive-shaft movement-amount estimation unit to estimate a first movement amount of a first object that is a target to be moved by a first drive shaft by using a first drive signal, an undriven-object movement-amount estimation unit to estimate a second movement amount of a second object in a three dimensional space, which is generated due to a drive force of the first drive shaft, by using the first drive signal, a correction-amount calculation unit to calculate a correction amount for the first drive signal on the basis of the first movement amount and the second movement amount, and a first correction-signal output unit to output a first corrected drive signal obtained by correcting the first drive signal by the correction amount to a drive unit to drive the first drive shaft.Type: ApplicationFiled: December 8, 2016Publication date: October 3, 2019Applicant: Mitsubishi Electric CorporationInventors: Toshihiro AZUMA, Tomoya FUJITA, Masayuki UEMATSU, Goh SATO
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Patent number: 10416224Abstract: An insulation detector for highly accurately detecting or measuring, with a simple configuration, insulation resistance of a load or an apparatus to a ground or a housing and connected to an electric apparatus including one or both of an intra-apparatus capacitor and a battery, the insulation detector including an intra-insulation detector capacitor, a voltage detecting unit that detects a voltage of the intra-insulation detector capacitor, and a current-path forming switch for connecting the ground or the housing, the intra-apparatus capacitor, and the intra-insulation detector capacitor in series and forming a current path including insulation resistance of the electric apparatus. The insulation detector measures the insulation resistance by measuring a time constant of a change in the voltage of the intra-insulation detector capacitor.Type: GrantFiled: October 28, 2014Date of Patent: September 17, 2019Assignee: Mitsubishi Electric CorporationInventors: Taichiro Tamida, Masayuki Uematsu, Akira Tanabe, Yoshitomo Hayashi, Yoji Tsutsumishita, Kosuke Tsujikawa
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Publication number: 20180340971Abstract: An insulation detector for highly accurately detecting or measuring, with a simple configuration, insulation resistance of a load or an apparatus to a ground or a housing and connected to an electric apparatus including one or both of an intra-apparatus capacitor and a battery, the insulation detector including an intra-insulation detector capacitor, a voltage detecting unit that detects a voltage of the intra-insulation detector capacitor, and a current-path forming switch for connecting the ground or the housing, the intra-apparatus capacitor, and the intra-insulation detector capacitor in series and forming a current path including insulation resistance of the electric apparatus. The insulation detector measures the insulation resistance by measuring a time constant of a change in the voltage of the intra-insulation detector capacitor.Type: ApplicationFiled: August 7, 2018Publication date: November 29, 2018Applicant: Mitsubishi Electric CorporationInventors: Taichiro TAMIDA, Masayuki UEMATSU, Akira TANABE, Yoshitomo HAYASHI, Yoji TSUTSUMISHITA, Kosuke TSUJIKAWA
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Publication number: 20180133860Abstract: A machine motion trajectory measuring apparatus includes a three-axis acceleration sensor measuring acceleration of a motion-trajectory measurement subject and outputting the result as an acceleration sensor signal, a sensor signal separation unit separating the acceleration sensor signal into two or more frequency bands, a motor signal separation unit separating a detection position signal into the frequency bands identical to those of the sensor signal separation unit, a data calibration unit calibrating the acceleration sensor signal in each of the two or more frequency bands by using the acceleration sensor signal separated by the sensor signal separation unit and the detection position signal separated by the motor signal separation unit and obtaining a motion trajectory component in each of the two or more frequency bands, and a motion trajectory calculation unit coupling the motion trajectory components in the two or more frequency bands and outputting the result as a motion trajectory.Type: ApplicationFiled: November 22, 2016Publication date: May 17, 2018Applicant: Mitsubishi Electric CorporationInventors: Tomoya FUJITA, Masayuki UEMATSU
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Publication number: 20180074476Abstract: A numerical control apparatus includes: a numerical control unit that generates a command position; a drive control unit that is connected to the numerical control unit; and a signal measurement unit that is connected to the numerical control unit and the drive control unit. The drive control unit generates a command controlling a drive unit connected to a control target such that the control target follows the command position, and generates indicator signal data to be output to the numerical control unit and the signal measurement unit. The numerical control unit includes an arithmetic unit that performs processing of acquiring the indicator signal data as first indicator signal data and second indicator signal data, comparing the two indicator signal data, calculating a communication delay of the second indicator signal data with respect to the first indicator signal data, and determining input time of the measured signal.Type: ApplicationFiled: May 12, 2015Publication date: March 15, 2018Applicant: Mitsubishi Electric CorporationInventors: Masayuki UEMATSU, Tomoya FUJITA
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Publication number: 20160377670Abstract: An insulation detector for highly accurately detecting or measuring, with a simple configuration, insulation resistance of a load or an apparatus to a ground or a housing and connected to an electric apparatus including one or both of an intra-apparatus capacitor and a battery, the insulation detector including an intra-insulation detector capacitor, a voltage detecting unit that detects a voltage of the intra-insulation detector capacitor, and a current-path forming switch for connecting the ground or the housing, the intra-apparatus capacitor, and the intra-insulation detector capacitor in series and forming a current path including insulation resistance of the electric apparatus. The insulation detector measures the insulation resistance by measuring a time constant of a change in the voltage of the intra-insulation detector capacitor.Type: ApplicationFiled: October 28, 2014Publication date: December 29, 2016Applicant: Mitsubishi Electric CorporationInventors: Taichiro TAMIDA, Masayuki UEMATSU, Akira TANABE, Yoshitomo HAYASHI, Yoji TSUTSUMISHITA, Kosuke TSUJIKAWA