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1. 发明授权

US09831807B2 Motor control apparatus and power steering system 有权
公开(公告)号：US09831807B2
公开(公告)日：2017-11-28
申请号：US15420669
申请日：2017-01-31
申请人： JTEKT CORPORATION
发明人： Hiroshi Kitamoto
IPC分类号： H02P27/04 , H02P6/14 , B62D5/04 , H02P6/12 , H02P29/00 , H02M1/08 , H03K17/06
CPC分类号： H02P6/14 , B62D5/046 , B62D5/0484 , B62D5/0487 , H02M1/08 , H02P6/12 , H02P29/00 , H03K17/063
摘要： A motor control apparatus includes an inverter, a driver, a negative voltage circuit, a voltage dividing circuit, and a detection unit. The inverter includes an upper-arm switching element and a lower-arm switching element to supply a voltage of a node between the upper-arm switching element and the lower-arm switching element to a motor as a phase voltage. The driver applies a first voltage or a second voltage to the upper-arm switching element to control and turn the upper-arm switching element on and off. The negative voltage circuit supplies a voltage lower than the voltage of the node to the driver as the second voltage. The voltage dividing circuit performs voltage division between the negative voltage circuit and a negative power supply. The detection unit outputs a signal based on a voltage resulting from the voltage division by the voltage dividing circuit.

2. 外观设计

USD1027742S1 Wheelchair 有权
公开(公告)号：USD1027742S1
公开(公告)日：2024-05-21
申请号：US29792859
申请日：2022-04-27
申请人： JTEKT CORPORATION
设计人： Hiroshi Kitamoto , Akihiro Takeuchi , Riku Nagayama , Chishin Yohena , Toshiki Kumeno , Nobuaki Ikehara , Nobuyuki Togashi , Goro Tsuji , Toshihiro Ishikawa
摘要： FIG. 1 is a front, top, and right side perspective view of a wheelchair showing the new design.
FIG. 2 is a rear, top, and right side perspective view thereof.
FIG. 3 is a front elevational view thereof.
FIG. 4 is a rear elevational view thereof.
FIG. 5 is a top plan view thereof.
FIG. 6 is a bottom plan view thereof.
FIG. 7 is a right side elevational view thereof; and,
FIG. 8 is a left side elevational view thereof.

3. 发明授权

US09956989B2 Inverter, motor control apparatus, and power steering system 有权
公开(公告)号：US09956989B2
公开(公告)日：2018-05-01
申请号：US15433363
申请日：2017-02-15
申请人： JTEKT CORPORATION
发明人： Hiroshi Kitamoto
IPC分类号： H02P27/04 , H03G1/00 , B62D5/04 , H02M7/537 , H02P27/08 , H02P6/17 , H02P29/024
CPC分类号： B62D5/046 , H01L29/7786 , H02H7/1222 , H02H11/002 , H02M1/32 , H02M7/537 , H02P6/17 , H02P27/08 , H02P29/024
摘要： An inverter includes a positive electrode terminal and a negative electrode terminal, upper-arm switching elements and lower-arm switching elements, and a voltage divider that supplies partial voltages of a voltage between the positive electrode terminal and the negative electrode terminal to a gate and a drain, respectively, of the lower-arm switching element. The lower-arm switching element includes an HEMT. In the voltage divider, the partial voltages are set to turn the lower-arm switching element off when a positive electrode and a negative electrode of a DC power supply are reversely connected to the positive electrode terminal and the negative electrode terminal, respectively.

4. 发明授权

US09297877B2 Abnormality detection system for rotation angle sensor 有权
公开(公告)号：US09297877B2
公开(公告)日：2016-03-29
申请号：US14133220
申请日：2013-12-18
申请人： JTEKT CORPORATION
发明人： Hiroshi Kitamoto
IPC分类号： G01B7/14 , G01R35/00 , G01D5/12 , G01D3/08 , H02K11/00 , G01R33/02 , G01R33/07
摘要： In an abnormality detection system for a rotation angle sensor, a fact that an abnormality has occurred in one of sine signals (S1, S2) or in one of cosine signals (S3, S4) is detected based on a sum of the electrical signals (S1, S2), and a sum of the electrical signals (S3, S4) (first detection result). A fact that an abnormality has occurred in one of the positive sine and cosine signals (S1, S3) or in one of the negative sine and cosine signals (S2, S4) by comparing a first temperature computed using a correlation between an amplitude and a temperature and based on the electrical signals (S1, S3), a second temperature computed using a correlation between the amplitude and a temperature and based on the electrical signals (S2, S4), and a third temperature detected by a temperature sensor with each other (second detection result). A microcomputer identifies which of the electrical signals is abnormal by comparing the first and second detection results with each other.

5. 外观设计

USD1042244S1 Wheelchair 有权
公开(公告)号：USD1042244S1
公开(公告)日：2024-09-17
申请号：US29792855
申请日：2022-04-27
申请人： JTEKT CORPORATION
设计人： Hiroshi Kitamoto , Akihiro Takeuchi , Riku Nagayama , Chishin Yohena , Toshiki Kumeno , Nobuaki Ikehara , Nobuyuki Togashi , Goro Tsuji
摘要： FIG. 1 is a rear, top, and right side perspective view of a wheelchair showing the new design.
FIG. 2 is a front elevational view thereof.
FIG. 3 is a rear elevational view thereof.
FIG. 4 is a top plan view thereof.
FIG. 5 is a bottom plan view thereof.
FIG. 6 is a right side elevational view thereof.
FIG. 7 is a left side elevational view thereof.
FIG. 8 is an enlarged view of the section indicated by lines 8-8 in FIG. 1.
FIG. 9 is a cross-sectional view thereof, taken along lines 9-9 in FIG. 2; and,
FIG. 10 is an enlarged view of the section indicated by lines 10-10 in FIG. 9.
The broken lines depict portions of the wheelchair that form no part of the claimed design.

6. 发明授权

US10156832B2 Electric power steering system 有权
公开(公告)号：US10156832B2
公开(公告)日：2018-12-18
申请号：US15493624
申请日：2017-04-21
申请人： JTEKT CORPORATION
发明人： Hiroshi Kitamoto
IPC分类号： H02P25/22 , G05B13/02 , B62D5/04 , H02P21/22
摘要： In an electric power steering system, an offset correction value setting unit corrects second offset correction values in a state where 100% of current command values is distributed to a first control unit, and 0% of the current command values is distributed to a second control unit. The offset correction value setting unit corrects first offset correction values in a state where 100% of the current command values is distributed to the second control unit, and 0% of the current command values is distributed to the first control unit.

7. 发明授权

US09341695B2 Abnormality detection system for rotation angle sensor 有权
标题翻译：旋转角传感器异常检测系统
公开(公告)号：US09341695B2
公开(公告)日：2016-05-17
申请号：US14133220
申请日：2013-12-18
申请人： JTEKT CORPORATION
发明人： Hiroshi Kitamoto
IPC分类号： G01B7/14 , G01R35/00 , G01D5/12 , G01D3/08 , H02K11/00 , G01R33/02 , G01R33/07
CPC分类号： G01R35/00 , G01D3/08 , G01D5/12 , G01D5/24485 , G01R33/02 , G01R33/07 , H02K11/215 , H02K11/25
摘要： In an abnormality detection system for a rotation angle sensor, a fact that an abnormality has occurred in one of sine signals (S1, S2) or in one of cosine signals (S3, S4) is detected based on a sum of the electrical signals (S1, S2), and a sum of the electrical signals (S3, S4) (first detection result). A fact that an abnormality has occurred in one of the positive sine and cosine signals (S1, S3) or in one of the negative sine and cosine signals (S2, S4) by comparing a first temperature computed using a correlation between an amplitude and a temperature and based on the electrical signals (S1, S3), a second temperature computed using a correlation between the amplitude and a temperature and based on the electrical signals (S2, S4), and a third temperature detected by a temperature sensor with each other (second detection result). A microcomputer identifies which of the electrical signals is abnormal by comparing the first and second detection results with each other.
摘要翻译：在用于旋转角度传感器的异常检测系统中，以正弦信号（S1，S2）或余弦信号（S3，S4）中的一个发生异常的事实是基于电信号 S1，S2）和电信号（S3，S4）的和（第一检测结果）。通过比较使用振幅和幅度之间的相关性计算的第一温度，在正弦和余弦信号（S1，S3）之一或负正弦和余弦信号（S2，S4）中的一个中发生异常的事实温度，并且基于电信号（S1，S3），使用振幅和温度之间的相关性并基于电信号（S2，S4）计算的第二温度和由温度传感器彼此检测的第三温度（第二检测结果）。通过比较第一和第二检测结果，微计算机识别哪个电信号是异常的。

8. 外观设计

USD1027741S1 Wheelchair 有权
公开(公告)号：USD1027741S1
公开(公告)日：2024-05-21
申请号：US29792857
申请日：2022-04-27
申请人： JTEKT CORPORATION
设计人： Hiroshi Kitamoto , Akihiro Takeuchi , Riku Nagayama , Chishin Yohena , Toshiki Kumeno , Nobuaki Ikehara , Nobuyuki Togashi , Goro Tsuji , Toshihiro Ishikawa
摘要： FIG. 1 is a rear, top, and right side perspective view of a wheelchair showing the new design.
FIG. 2 is a rear elevational view thereof.
FIG. 3 is a front elevational view thereof.
FIG. 4 is a top plan view thereof.
FIG. 5 is a bottom plan view thereof.
FIG. 6 is a left side elevational view thereof.
FIG. 7 is a right side elevational view thereof.
FIG. 8 is an enlarged view of the section indicated by lines 8-8 in FIG. 1.
FIG. 9 is an enlarged view of the section indicated by lines 9-9 in FIG. 2; and,
FIG. 10 is an enlarged view of the section indicated by lines 10-10 in FIG. 4.
The broken lines depict portions of the wheelchair that form no part of the claimed design.

9. 发明授权

US10560046B2 Motor control device 有权
公开(公告)号：US10560046B2
公开(公告)日：2020-02-11
申请号：US16185856
申请日：2018-11-09
申请人： JTEKT CORPORATION
发明人： Hiroshi Sumasu , Hiroshi Kitamoto
IPC分类号： B62D5/04 , H02P27/08 , H02P21/22 , H02M1/44 , H02P21/00
摘要： A first PWM count computation unit computes a first PWM count for each of three phases in a first system. A second PWM count computation unit computes a second PWM count for each of three phases in a second system. Upper and lower switching elements for each phase in the first system are controlled in accordance with a first pattern in which the upper and lower switching elements are varied in the order of an upper on state, a lower on state, and the upper on state from the time of start of PWM cycles. Upper and lower switching elements for each phase in the second system are controlled in accordance with a second pattern in which the upper and lower switching elements are varied in the order of a lower on state, an upper on state, and the lower on state from the time of start of PWM cycles.

10. 发明授权

US10505363B2 Overcurrent protection circuit 有权
公开(公告)号：US10505363B2
公开(公告)日：2019-12-10
申请号：US15621447
申请日：2017-06-13
申请人： JTEKT CORPORATION
发明人： Hiroshi Kitamoto , Nobuhiro Uchida
IPC分类号： H02G9/00 , H02H9/02 , H02H3/00 , H02H3/08 , H02H5/04 , H02M1/32 , H03K17/08 , H03K17/082
CPC分类号： H02H9/02 , H02H3/006 , H02H3/08 , H02H5/041 , H02M1/32 , H03K17/08 , H03K17/0822 , H03K17/0828
摘要： An overcurrent protection circuit includes an amplifier configured to amplify an inter-terminal voltage of a shunt resistor, an offset application circuit configured to allow the amplifier to provide an output with a predetermined offset voltage additionally applied thereto, a first comparator that compares an output voltage from the amplifier with a predetermined first reference voltage higher than the offset voltage to output a through-current sensing signal when the output voltage from the amplifier is higher than a first reference voltage, and an amplifier failure determination circuit that compares the output voltage from the amplifier with a predetermined second reference voltage that is higher than zero and lower than the offset voltage to output an amplification circuit failure determination signal corresponding to a result of the comparison.

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