Patents by Inventor Toshiaki Kimata
Toshiaki Kimata 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: 11562048Abstract: A machine learning apparatus for learning a correction parameter used in correction of a command value that controls a motor in a motor drive system including a plurality of kinds of correction functions includes: a state observation unit that observes, as a state variable, each of a feature calculated on the basis of drive data and the kind of any of the correction functions of the motor drive system and the correction parameter; and a learning unit that learns the correction parameter for each of the correction functions according to a training data set created on the basis of the state variable.Type: GrantFiled: October 8, 2020Date of Patent: January 24, 2023Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Tomoya Fujita, Toshiaki Kimata, Tatsuya Ito, Yukihiro Iuchi, Goh Sato
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Publication number: 20210036640Abstract: A machine learning apparatus for learning a correction parameter used in correction of a command value that controls a motor in a motor drive system including a plurality of kinds of correction functions includes: a state observation unit that observes, as a state variable, each of a feature calculated on the basis of drive data and the kind of any of the correction functions of the motor drive system and the correction parameter; and a learning unit that learns the correction parameter for each of the correction functions according to a training data set created on the basis of the state variable.Type: ApplicationFiled: October 8, 2020Publication date: February 4, 2021Applicant: Mitsubishi Electric CorporationInventors: Tomoya FUJITA, Toshiaki KIMATA, Tatsuya ITO, Yukihiro IUCHI, Goh SATO
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Patent number: 10840840Abstract: A machine learning apparatus for learning a correction parameter used in correction of a command value that controls a motor in a motor drive system including a plurality of kinds of correction functions includes: a state observation unit that observes, as a state variable, each of a feature calculated on the basis of drive data and the kind of any of the correction functions of the motor drive system and the correction parameter; and a learning unit that learns the correction parameter for each of the correction functions according to a training data set created on the basis of the state variable.Type: GrantFiled: June 14, 2018Date of Patent: November 17, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Tomoya Fujita, Toshiaki Kimata, Tatsuya Ito, Yukihiro Iuchi, Goh Sato
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Patent number: 10663945Abstract: A numerical control device includes: a tool-side displacement measurement unit; a workpiece-side displacement measurement unit; a drive signal measurement unit; a relative displacement calculation unit between the tool and the workpiece; a relative displacement prediction unit calculating a relative displacement predicted value from the drive signal, from a prediction model representing a relationship between the drive signal and the relative displacement; a model parameter operation unit generating prediction model parameters constituting the prediction model, from the drive signal, the relative displacement, and the predicted value; and a command value correction unit outputting a post-correction position command obtained by correcting a position command to the drive unit using the prediction model parameters. The model parameter operation unit changes the prediction model parameters to reduce a difference between the relative displacement and the predicted value.Type: GrantFiled: July 5, 2018Date of Patent: May 26, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshiaki Kimata, Tomoya Fujita, Toshihiro Azuma, Tatsuya Ito
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Publication number: 20200012253Abstract: A numerical control device includes: a tool-side displacement measurement unit; a workpiece-side displacement measurement unit; a drive signal measurement unit; a relative displacement calculation unit between the tool and the workpiece; a relative displacement prediction unit calculating a relative displacement predicted value from the drive signal, from a prediction model representing a relationship between the drive signal and the relative displacement; a model parameter operation unit generating prediction model parameters constituting the prediction model, from the drive signal, the relative displacement, and the predicted value; and a command value correction unit outputting a post-correction position command obtained by correcting a position command to the drive unit using the prediction model parameters. The model parameter operation unit changes the prediction model parameters to reduce a difference between the relative displacement and the predicted value.Type: ApplicationFiled: July 5, 2018Publication date: January 9, 2020Applicant: Mitsubishi Electric CorporationInventors: Toshiaki KIMATA, Tomoya FUJITA, Toshihiro AZUMA, Tatsuya ITO
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Publication number: 20190386595Abstract: A machine learning apparatus for learning a correction parameter used in correction of a command value that controls a motor in a motor drive system including a plurality of kinds of correction functions includes: a state observation unit that observes, as a state variable, each of a feature calculated on the basis of drive data and the kind of any of the correction functions of the motor drive system and the correction parameter; and a learning unit that learns the correction parameter for each of the correction functions according to a training data set created on the basis of the state variable.Type: ApplicationFiled: June 14, 2018Publication date: December 19, 2019Applicant: Mitsubishi Electric CorporationInventors: Tomoya FUJITA, Toshiaki KIMATA, Tatsuya ITO, Yukihiro IUCHI, Goh SATO
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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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Patent number: 9939804Abstract: To dynamically change the acceleration without trial executions of a machining program, a numerical control device, which controls a motor on the basis of a machining program that specifies a path for a drive target of the motor, includes a changing unit that changes the acceleration of the motor under the control of the motor on the basis of the inertia ratio, the acceleration-deceleration factor that can be externally input, or the current value of the motor.Type: GrantFiled: December 13, 2013Date of Patent: April 10, 2018Assignee: Mitsubishi Electric CorporationInventors: Toshiaki Kimata, Kotaro Nagaoka, Naoki Nakamura
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Publication number: 20160349732Abstract: To dynamically change the acceleration without trial executions of a machining program, a numerical control device, which controls a motor on the basis of a machining program that specifies a path for a drive target of the motor, includes a changing unit that changes the acceleration of the motor under the control of the motor on the basis of the inertia ratio, the acceleration-deceleration factor that can be externally input, or the current value of the motor.Type: ApplicationFiled: December 13, 2013Publication date: December 1, 2016Applicant: Mitsubishi Electric CorporationInventors: Toshiaki KIMATA, Kotaro NAGAOKA, Naoki NAKAMURA
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Patent number: 8963474Abstract: A motor control device includes: an acceleration/deceleration processing unit that generates a servo command according to an acceleration/deceleration parameter; a servo control unit that controls a motor drive torque to drive a control target machine motor according to the servo command; a power supply unit that supplies electric power of a predetermined power supply capacity from a commercial power supply to the servo control unit; an electrical storage unit that supplies electric power supplementing the electric power; and an acceleration/deceleration parameter setting unit that computes maximum power that can be used for acceleration/deceleration based on a power storage amount in the electrical storage unit, the power supply capacity, and all energy required for acceleration, computes an acceleration/deceleration parameter that causes electric power at a time of acceleration/deceleration to be equal to or lower than the maximum power, and sets the acceleration/deceleration parameter.Type: GrantFiled: December 7, 2011Date of Patent: February 24, 2015Assignee: Mitsubishi Electric CorporationInventors: Kotaro Nagaoka, Shinya Nishino, Toshiaki Kimata, Daisuke Fujino
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Publication number: 20130300337Abstract: A motor control device includes: an acceleration/deceleration processing unit that generates a servo command according to an acceleration/deceleration parameter; a servo control unit that controls a motor drive torque to drive a control target machine motor according to the servo command; a power supply unit that supplies electric power of a predetermined power supply capacity from a commercial power supply to the servo control unit; an electrical storage unit that supplies electric power supplementing the electric power; and an acceleration/deceleration parameter setting unit that computes maximum power that can be used for acceleration/deceleration based on a power storage amount in the electrical storage unit, the power supply capacity, and all energy required for acceleration, computes an acceleration/deceleration parameter that causes electric power at a time of acceleration/deceleration to be equal to or lower than the maximum power, and sets the acceleration/deceleration parameter.Type: ApplicationFiled: December 7, 2011Publication date: November 14, 2013Applicant: Mitsubishi Electric CorporationInventors: Kotaro Nagaoka, Shinya Nishino, Toshiaki Kimata, Daisuke Fujino