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公开(公告)号：US11018611B2
公开(公告)日：2021-05-25
申请号：US15941343
申请日：2018-03-30
Applicant: DENSO CORPORATION
Inventor： Kotaro Nakashima , Nobuyori Nakajima , Takafumi Sato , Akira Takesaki , Takashi Suzuki
Abstract: A control apparatus for a multi-phase rotating electric machine includes at least one electric power converter, a command value calculator and an input voltage determiner. The at least one electric power converter converts DC power into multi-phase AC power and supplies the multi-phase AC power to the rotating electric machine. The command value calculator calculates command values for operating the at least one electric power converter. The input voltage determiner determines whether an input voltage of the at least one electric power converter is within a normal operation range. When the input voltage is determined by the input voltage determiner to be outside the normal operation range, the control apparatus switches control to ignore voltage change or current change caused by the reverse input of an external force to the rotating electric machine from a load side or suppress control fluctuation caused by the reverse input of the external force.
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公开(公告)号：US10994772B2
公开(公告)日：2021-05-04
申请号：US16702912
申请日：2019-12-04
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki , Shuji Kuramitsu , Nobuyori Nakajima , Go Endoh , Haruo Suzuki , Koichi Nakamura , Yosuke Ogi , Atsuko Oka
Abstract: A steering system in a vehicle includes a plurality of subsystems provided with a control unit. The control unit includes a storage unit storing steer angle information regarding a steer angle of one of a steering mechanism and a steered mechanism when the steering mechanism or the steered mechanism stops, an abnormality determiner determining abnormality of the motor rotation detection value and the detection circuit in the plurality of subsystems at a start time of a motor based on a comparison of at least two parameters, and a steer angle calculator calculating the steer angle based on the parameters having been determined by the abnormality determiner as not abnormal.
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公开(公告)号：US10696323B2
公开(公告)日：2020-06-30
申请号：US15674674
申请日：2017-08-11
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Takahiro Toko , Hiromasa Tamaki , Jun Hasegawa , Shohei Fujita , Kohei Yanai , Tatsuya Suzuki , Tatsuya Miyake , Takashi Suzuki
IPC: B62D5/04 , B62D6/00 , G05B6/02 , H02P21/00 , H02P21/18 , H02P21/22 , B62D5/00 , G01L5/22 , G01P1/02 , B62D3/12 , H02P27/06
Abstract: A steering control device includes a command value setting processing portion configured to set a current command value based on a detection value of steering torque; a feedback processing portion configured to control a voltage applied to a motor so as to control a current flowing through the motor to the current command value, based on an output value of an integral element obtained by using a difference between the current and the current command value; an end determination processing portion configured to determine whether a turning angle of steered wheels has reached a limit angle; and an end-time limit processing portion configured to perform correction to increase a magnitude of the difference, based on a degree of a decrease in a magnitude of a rotational speed of the motor when the end determination processing portion determines that the turning angle has reached the limit angle.
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公开(公告)号：US10673366B2
公开(公告)日：2020-06-02
申请号：US16146756
申请日：2018-09-28
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki , Hiroyasu Otake
IPC: H02P6/14 , H02P21/22 , H02P27/08 , B62D5/04 , H02M7/5387
Abstract: A controller of a multiphase rotating electric machine has two inverters outputting an alternating current to two sets of windings, and a control section driving a motor by switching between a “two-system driving mode” supplying power from the two inverters to the two sets of winding and a “one-system driving mode” supplying power from one of the two inverters to the corresponding set of windings, The control section in the one-system driving mode changes at least one of a maximum amplitude and a current phase of the alternating current used in the two-system driving mode to compensate for a reluctance torque generated by a mutual inductance of the two sets of winding in the two-system driving mode.
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85.发明授权公开(公告)号：US10227085B2
公开(公告)日：2019-03-12
申请号：US15670992
申请日：2017-08-07
Applicant: DENSO CORPORATION
Inventor： Ryo Kano , Takashi Suzuki
Abstract: A rotary electrical machine control apparatus is provided which controls drive of a rotary electrical machine having a plurality of winding sets. The apparatus includes inverters that are provided so as to respectively correspond to the winding sets, a temperature detection element that detects a base element that is used as a base for estimation of inverter temperatures, which are temperatures of the inverters, and a control section that has a temperature estimation section that estimates the inverter temperatures based on the base temperature and a temperature change amount generated due to current application to the inverters. On-resistance of the switching elements of the first inverter is smaller than on-resistance of the switching elements of the second inverter. The temperature detection element is disposed in an area, a distance between the area and the first inverter being shorter than a distance between the area and the second inverter.
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Patent Agency Ranking
公开(公告)号：US10116235B2
公开(公告)日：2018-10-30
申请号：US15624561
申请日：2017-06-15
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
Abstract: A modulation processing unit performs a down-shift process or an up-shift process. In the down-shift process, a neutral-point voltage is shifted towards a low voltage side such that a smallest phase voltage command value is a lower fixed value that is a first lower limit value or a second lower limit value. In the up-shift process, the neutral-point voltage is shifted towards a high voltage side such that a largest phase voltage command value is an upper fixed value that is a first upper limit value or a second upper limit value. The modulation processing unit selects either of a first fixed value, being the first lower limit value or the first upper limit value, and a second fixed value, being the second lower limit value or the second upper limit value, based on a difference between the phase voltage command values in the down-shift process or the up-shift process.
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87.发明申请公开(公告)号：US20180219499A1
公开(公告)日：2018-08-02
申请号：US15880264
申请日：2018-01-25
Applicant: DENSO CORPORATION
Inventor： Ryo Kano , Takashi Suzuki
IPC: H02P6/10 , B62D5/04 , H02P25/22 , G01R19/00 , H02P21/20 , H02P29/024 , H02P29/032
CPC classification number: H02P6/10 , B62D5/0484 , B62D5/0496 , G01R19/0053 , H02P21/20 , H02P25/22 , H02P29/027 , H02P29/032 , H02P29/60
Abstract: In a rotary electrical machine control apparatus, a selection section selects a relay current limiting value or a coil current limiting value depending on whether a plurality of systems are operated or one or more but not all of the plurality of systems are operated. The system is a combination of a winding set, an inverter, and a power supply relay, which correspond to each other. The relay current limiting value is a current limiting value calculated based on the temperature of the power supply relay. The coil current limiting value is a current limiting value calculated based on the temperature of a choke coil.
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88.发明申请公开(公告)号：US20170104437A1
公开(公告)日：2017-04-13
申请号：US15273407
申请日：2016-09-22
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
CPC classification number: H02P29/028 , B62D5/0475 , B62D5/0481 , H02K1/12 , H02K1/2706 , H02K3/28 , H02K21/14 , H02P25/22 , H02P29/024 , H02P29/032
Abstract: A rotary electric machine control device for a rotary electric machine having winding sets with coils includes: an inverter for each winding set; a power source relay for each inverter; a terminal voltage detector detecting a terminal voltage of each coil; and a controller including an inverter controller, a relay controller and an abnormality determination unit. Each winding set and a corresponding inverter provides a system. When the rotary electric machine is driven using a normal system: the relay controller controls the power source relay to cut off power supply from a power source to the inverter in an abnormal system; the abnormality determination unit specifies a short-circuited location based on the terminal voltage in the abnormal system; and the inverter controller corrects a command value related to control of the inverter in the normal system according to a specified short-circuited location.
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公开(公告)号：US20160355211A1
公开(公告)日：2016-12-08
申请号：US15173117
申请日：2016-06-03
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki , Hideki Kabune , Katsuhiko Hayashi , Takaharu Kozawa
CPC classification number: B62D5/0457 , B62D5/0481 , B62D5/0484 , G05B21/02 , G05B2219/37532
Abstract: A communication system includes a sensor apparatus transmitting a sensor signal including detection information of a detection target as a digital signal and a microcomputer receiving the sensor signal through a signal line and performing a control operation at a predetermined operation cycle based on the sensor signal that is received. The microcomputer transmits, to the sensor apparatus, a synchronization signal which is synchronized with the predetermined operation cycle of the microcomputer. The sensor apparatus transmits the sensor signal at a predetermined constant cycle except when the synchronization signal transmitted by the microcomputer is received. The sensor apparatus changes a transmission timing of the sensor signal corresponding to the synchronization signal when the synchronization signal transmitted by the microcomputer is received.
Abstract translation: 通信系统包括：传感器装置，其将包含检测对象的检测信息的传感器信号作为数字信号，以及通过信号线接收传感器信号的微型计算机，基于传感器信号，以规定的动作周期进行控制 收到了 微型计算机向传感器装置发送与微计算机的预定操作周期同步的同步信号。 除了接收到微型计算机发送的同步信号之外，传感器装置以预定的恒定周期发送传感器信号。 当接收到由微型计算机发送的同步信号时，传感器装置改变与同步信号相对应的传感器信号的发送定时。
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公开(公告)号：US20160315577A1
公开(公告)日：2016-10-27
申请号：US15132774
申请日：2016-04-19
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
Abstract: A three-phase rotating machine controller includes electric power converters that output, to the winding sets of a three-phase rotating machine, alternating currents having a same amplitude and a phase difference of (30±60*n) degrees from each other, n being an integer, and a control unit that reduces a peak of a phase current 1st order component applied to the rotating machine by superimposing therewith a phase current 5th order component and a phase current 7th order component, which have 5 times and 7 times the frequency of the phase current 1st order component, respectively. The control unit superimposes the phase current 5th and 7th order components having an optimum combination of amplitudes such that a peak reduction amount of the phase current 1st order component exceeds 5%, the amplitudes of the phase current 5th and 7th order components being with respect to the amplitude of the phase current 1st order component[
Abstract translation: 三相旋转机械控制器包括电力转换器，其向三相旋转机器的绕组组输出具有相同幅度和相位差（30±60 * n）的相位差的交流电，n 以及控制单元，其通过与施加到旋转机器的相电流5次分量和相电流7阶分量相叠加的频率的5倍和7倍来降低施加到旋转机器的相电流1阶分量的峰值 的相电流1阶分量。 控制单元叠加具有相位电流1次分量的峰值减少量超过5％的幅度的最佳组合的相电流5和7次分量，相电流第5和第7次分量的振幅相对于 相电流幅值1次分量[
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