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公开(公告)号：US10768237B2
公开(公告)日：2020-09-08
申请号：US16200786
申请日：2018-11-27
Applicant: FANUC CORPORATION
Inventor： Norihiro Chou , Youichirou Ooi
Abstract: A motor driving device includes: a converter unit having a capacitor; a plurality of inverter units having a plurality of semiconductor switching elements and configured to convert a capacitor voltage across the capacitor into an AC voltage to drive a plurality of motors; a second switch configured to connect the negative-side terminal of the capacitor to ground; a first detector configured to detect a ground-referenced voltage; and a second detector configured to detect the capacitor voltage. The motor driving device controls the semiconductor switching elements to establish a measurement state for enabling measuring of the insulation resistance of a measurement target motor, estimates a convergence value of the ground-referenced voltage based on multiple measurements of the ground-referenced voltage detected by the first detector, and then calculates the insulation resistance based on the estimated convergence value and the capacitor voltage.
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公开(公告)号：US11811351B2
公开(公告)日：2023-11-07
申请号：US16879765
申请日：2020-05-21
Applicant: FANUC CORPORATION
Inventor： Norihiro Chou
CPC classification number: H02P3/18 , H02K11/0094 , H02K11/33 , H02P27/04 , H02M7/06
Abstract: A motor controller includes a motor drive unit configured to drive and control a motor, an electrical discharge control unit configured to perform control in which regenerative power from the motor is consumed by a regenerative power discharge resistor, and a housing formed to accommodate the motor drive unit and the electrical discharge control unit, wherein at least a part of the housing is configured as the regenerative power discharge resistor.
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公开(公告)号：US20190162789A1
公开(公告)日：2019-05-30
申请号：US16200786
申请日：2018-11-27
Applicant: FANUC CORPORATION
Inventor： Norihiro Chou , Youichirou Ooi
Abstract: A motor driving device includes: a converter unit having a capacitor; a plurality of inverter units having a plurality of semiconductor switching elements and configured to convert a capacitor voltage across the capacitor into an AC voltage to drive a plurality of motors; a second switch configured to connect the negative-side terminal of the capacitor to ground; a first detector configured to detect a ground-referenced voltage; and a second detector configured to detect the capacitor voltage. The motor driving device controls the semiconductor switching elements to establish a measurement state for enabling measuring of the insulation resistance of a measurement target motor, estimates a convergence value of the ground-referenced voltage based on multiple measurements of the ground-referenced voltage detected by the first detector, and then calculates the insulation resistance based on the estimated convergence value and the capacitor voltage.
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4.发明申请公开(公告)号：US20160356698A1
公开(公告)日：2016-12-08
申请号：US15153812
申请日：2016-05-13
Applicant: FANUC CORPORATION
Inventor： Norihiro Chou , Kiichi Inaba
IPC: G01N17/00
CPC classification number: G01N17/006 , G01N17/04
Abstract: A corrosion detection circuit according to an embodiment of the present invention includes an insulating board; a test chip having a corrodible metal, mounted on the surface of the insulating board; a plurality of resistors each having a higher resistance value than the test chip after a change due to an environment including contact with the test chip and the adhesion of dust to the test chip; and a voltage detection circuit for detecting the output voltage of a divided voltage output point, when a voltage is applied to the test chip and a voltage dividing circuit using the plurality of resistors. The voltage detection circuit detects a break in the test chip by corrosion based on a variation in the output voltage.
Abstract translation: 根据本发明实施例的腐蚀检测电路包括绝缘板; 具有可腐蚀金属的测试芯片，安装在绝缘板的表面上; 多个电阻器由于包括与测试芯片的接触以及灰尘附着在测试芯片上的环境变化而具有比测试芯片更高的电阻值; 以及电压检测电路，用于当向测试芯片施加电压时，检测分压电压输出点的输出电压，以及使用该多个电阻器的分压电路。 电压检测电路根据输出电压的变化，通过腐蚀来检测测试芯片的断裂。
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公开(公告)号：US10527675B2
公开(公告)日：2020-01-07
申请号：US16207629
申请日：2018-12-03
Applicant: FANUC CORPORATION
Inventor： Norihiro Chou , Youichirou Ooi
Abstract: A motor driving device includes: an insulation resistance measuring unit configured to measure insulation resistance of a motor selected as a measurement target to thereby measure the insulation resistance of each of the multiple motors; a measurement interrupting unit configured to interrupt measurement of insulation resistance if a measurement interrupt condition is established; a storage unit configured to store information indicating the motor selected as the measurement target at the time of interruption of the measurement of insulation resistance; and a measurement resuming unit configured to, when measurement is resumed, resume measurement of the insulation resistance sequentially from the motor that had been selected as the measurement target when the measurement was interrupted, based on the information stored in the storage unit.
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Patent Agency Ranking
公开(公告)号：US20190162773A1
公开(公告)日：2019-05-30
申请号：US16199752
申请日：2018-11-26
Applicant: FANUC CORPORATION
Inventor： Norihiro Chou , Youichirou Ooi
Abstract: A motor driving device includes: a converter unit having a capacitor; a plurality of inverter units having a plurality of semiconductor switching elements and configured to convert a capacitor voltage across the capacitor into an AC voltage to drive a plurality of motors; a second switch configured to connect the negative-side terminal of the capacitor to ground; a first detector configured to detect a ground-referenced voltage; and a second detector configured to detect the capacitor voltage. The motor driving device controls the semiconductor switching elements to establish a measurement state for enabling measurement of an insulation resistance of a measurement target motor, determines that the ground-referenced voltage has converged when an amount of change in the waveform of the ground-referenced voltage detected by the first detector becomes equal to or lower than a threshold, and calculates the insulation resistance based on the ground-referenced voltage and the capacitor voltage.
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公开(公告)号：US09887661B2
公开(公告)日：2018-02-06
申请号：US15245190
申请日：2016-08-24
Applicant: FANUC CORPORATION
Inventor： Yasuyuki Matsumoto , Norihiro Chou
CPC classification number: H02P29/60 , G05B13/0265 , G06N99/005
Abstract: A controller that makes an electric motor efficiently operate in accordance with an ambient temperature. The controller includes a machine learning apparatus learning an operating command to the electric motor. The machine learning apparatus includes a status observing part and learning part. The status observing part observes an ambient temperature of an electric motor apparatus and a cycle time of the electric motor as status variables. The learning part learns an operating command to the electric motor in accordance with a training data set prepared based on a combination of the judgment data acquired by a judgment data acquiring part and the status variables.
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公开(公告)号：US10416071B2
公开(公告)日：2019-09-17
申请号：US15153812
申请日：2016-05-13
Applicant: FANUC CORPORATION
Inventor： Norihiro Chou , Kiichi Inaba
Abstract: A corrosion detection circuit according to an embodiment of the present invention includes an insulating board; a test chip having a corrodible metal, mounted on the surface of the insulating board; a plurality of resistors each having a higher resistance value than the test chip after a change due to an environment including contact with the test chip and the adhesion of dust to the test chip; and a voltage detection circuit for detecting the output voltage of a divided voltage output point, when a voltage is applied to the test chip and a voltage dividing circuit using the plurality of resistors. The voltage detection circuit detects a break in the test chip by corrosion based on a variation in the output voltage.
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公开(公告)号：US20190178941A1
公开(公告)日：2019-06-13
申请号：US16207629
申请日：2018-12-03
Applicant: FANUC CORPORATION
Inventor： Norihiro Chou , Youichirou Ooi
Abstract: A motor driving device includes: an insulation resistance measuring unit configured to measure insulation resistance of a motor selected as a measurement target to thereby measure the insulation resistance of each of the multiple motors; a measurement interrupting unit configured to interrupt measurement of insulation resistance if a measurement interrupt condition is established; a storage unit configured to store information indicating the motor selected as the measurement target at the time of interruption of the measurement of insulation resistance; and a measurement resuming unit configured to, when measurement is resumed, resume measurement of the insulation resistance sequentially from the motor that had been selected as the measurement target when the measurement was interrupted, based on the information stored in the storage unit.
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10.发明授权公开(公告)号：US09526173B2
公开(公告)日：2016-12-20
申请号：US13955133
申请日：2013-07-31
Applicant: FANUC Corporation
Inventor： Norihiro Chou , Kiichi Inaba
CPC classification number: H05K1/181 , H01R13/5227 , H05K5/03 , Y10S220/06
Abstract: An attachment capable of preventing liquid from adhering to a specific electronic component within an electronic device. An electronic substrate has an attachment which can be attached to and detached from the electronic substrate. The attachment has an attachment part detachably attached to an edge of the electronic substrate; and a shield part connected to or integrally formed with the attachment part. The attachment part is a clip-like member having a certain degree of elasticity, and is configured to grip an edge of the electronic substrate so that the attachment is held at a predetermined place. The shield part has an inclined surface, and is configured to shield the electronic component so that liquid, such as a splash or droplet moving toward the electronic component, does not adhere to the component when the attachment is held at the predetermined place.
Abstract translation: 能够防止液体粘附到电子设备内的特定电子部件的附件。 电子基板具有可以附着到电子基板上并从电子基板上拆下的附件。 附件具有可拆卸地附接到电子基板的边缘的附接部分; 以及与所述附接部连接或一体地形成的屏蔽部。 附着部是具有一定程度的弹性的夹状构件，并且被构造成夹持电子基板的边缘，使得附件保持在预定的位置。 屏蔽部分具有倾斜表面，并且被构造成屏蔽电子部件，使得当附件保持在预定位置时，液体，例如朝向电子部件移动的飞溅或液滴不粘附到部件上。
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