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公开(公告)号：US20220345066A1
公开(公告)日：2022-10-27
申请号：US17760948
申请日：2019-11-12
发明人： Akira FURUKAWA
IPC分类号： H02P27/08 , H02P25/022 , H02M1/00 , G01R19/10 , G01R35/00
摘要： To provide a controller for AC rotary machine which can detect the field current flowing through the field winding with good accuracy and can suppress the heat generation of the current detection circuit. A controller for AC rotary machine is provided with a bus current detection circuit that detects a bus current which flows through a connection path between a DC power source and a converter; a converter switching control unit that switches a power supply path and a circulation path of the converter; and a current calculation unit that calculates a field current flowing into the field winding, based on a bus current in suppling power detected when switching to the power supply path and a bus current in circulating detected when switching to the circulation path.
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公开(公告)号：US20220063715A1
公开(公告)日：2022-03-03
申请号：US17417290
申请日：2019-01-22
发明人： Tatsuya MORI , Akira FURUKAWA
IPC分类号： B62D5/04
摘要： Provided is a rotation angle detection device including: an intermediate signal generation unit configured to generate an intermediate signal based on a product of a sine signal and a cosine signal which are based on a rotation angle of a rotating body; a first multiplication unit; and a first rotation angle calculation unit. The intermediate signal generation unit includes: a first multiplier configured to calculate the product of the sine signal and the cosine signal; and a first low-pass filter configured to remove frequency components equal to or higher than twice a frequency of fundamental waves of the sine signal and the cosine signal from an output of the first multiplier.
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公开(公告)号：US20210114652A1
公开(公告)日：2021-04-22
申请号：US16464378
申请日：2017-01-11
发明人： Tatsuya MORI , Takayuki KIFUKU , Akira FURUKAWA
摘要： To provide a motor control device capable of reducing noise without requiring preparation of a plurality of PWM carrier waves, an offset voltage is added equally to each phase of three-phase voltage command values from an inverter to output modified three-phase voltage command values, which are compared to a PWM carrier wave to output three-phase terminal voltages to a motor, and an offset voltage is switched among n offset candidate voltages (n is a natural number of three or more) having different values at set time intervals for output to vary timings to turn on and timings to turn off the three-phase terminal voltages equally for all phases.
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公开(公告)号：US20200255067A1
公开(公告)日：2020-08-13
申请号：US16649710
申请日：2017-11-07
发明人： Kenta TANAKA , Isao KEZOBO , Akira FURUKAWA , Seiji SAWADA
摘要： To provide a motor controller and an electric power steering apparatus which can suppress torque fluctuation resulting from low detection resolution of angle, with simple calculation, even in condition where the rotational speed of motor is low. A motor controller estimates an angle error correlation value correlated with the angle detection error based on the current command value when a change frequency of the angle detection value is lower than a cutoff frequency of feedback control system which controls a rotation state; corrects the current command value or the angle detection value based on the estimation value of angle error correlation value; and changes the estimation value of angle error correlation value so that the absolute value of angle detection error increases with respect to increase in the current command value, and the absolute value of angle detection error decreases with respect to decrease in the current command value.
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公开(公告)号：US20190267925A1
公开(公告)日：2019-08-29
申请号：US16327914
申请日：2016-11-16
发明人： Akira FURUKAWA , Munenori YAMAMOTO
IPC分类号： H02P25/22 , H02P27/08 , H02P29/024 , B62D5/04
摘要： When a switching device cutoff failure determination unit determines a failure in a switching device cutoff switching unit, output torque produced based on the first armature winding and output torque produced based on the second armature winding are produced in such a way that the respective directions thereof are opposite to each other.
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公开(公告)号：US20180244308A1
公开(公告)日：2018-08-30
申请号：US15754327
申请日：2015-11-02
发明人： Akira FURUKAWA , Yu KAWANO
CPC分类号： B62D5/0484 , B62D5/046 , B62D5/0463 , B62D5/0487 , H02P21/0089 , H02P21/05 , H02P21/22 , H02P25/22 , H02P27/06 , H02P29/0241 , H02P29/50
摘要： Provided is an electric power steering device capable of continuing control while ensuring a satisfactory level of a steering feeling of a driver at a time of occurrence of failure of one motor winding set. A control part is configured to detect a failure of each component of the electric power steering device, and when control is continued with field-weakening control by a normal motor winding and an inverter circuit depending on the detected failure, restrict a d-axis current based on a torque ripple that occurs in a steering wheel of a vehicle with respect to the field-weakening control of a state in which the failure has not occurred.
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公开(公告)号：US20180006547A1
公开(公告)日：2018-01-04
申请号：US15545749
申请日：2015-02-16
发明人： Tatsuya MORI , Akira FURUKAWA
CPC分类号： H02M1/14 , H02M1/088 , H02M7/539 , H02P6/10 , H02P21/05 , H02P21/22 , H02P25/03 , H02P25/22 , H02P27/05 , H02P27/06
摘要： A first offset voltage which is added to voltage commands in a first three-phase voltage command calculated on the basis of a control command for an AC rotary machine, and a second offset voltage which is added to voltage commands in a second three-phase voltage command calculated on the basis of a control command for the AC rotary machine, are set in such a manner that a period during which one of a first power converter and a second power converter outputs an effective vector and the other thereof outputs a zero vector occurs during a carrier period of a first carrier wave signal and a second carrier wave signal.
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8.发明申请公开(公告)号：US20160329850A1
公开(公告)日：2016-11-10
申请号：US15110270
申请日：2014-02-21
发明人： Tatsuya MORI , Isao KEZOBO , Yoshihiko KIMPARA , Akira FURUKAWA
CPC分类号： H02P21/22 , B62D5/046 , B62D5/0463 , H02P25/22 , H02P27/08
摘要： This invention is concerning a control apparatus for an AC rotary machine including: an AC rotary machine that includes a first winding and a second winding which have a phase difference; a first current detection unit that detects a current of the first winding; a second current detection unit that detects a current of the second winding; a control unit that calculates a first voltage command and a second voltage command on the basis of a detected current value; and a first detectability determination unit that determines a detectability of the current of the first winding, detected by the first current detection unit, on the basis of at least one of the first voltage command and the second voltage command, wherein the control unit calculates the first voltage command and the second voltage command on the basis of the detected current value of the second winding when the current of the first winding is undetectable.
摘要翻译： 本发明涉及一种交流旋转机械的控制装置，包括：交流旋转机，其包括具有相位差的第一绕组和第二绕组; 检测第一绕组的电流的第一电流检测单元; 第二电流检测单元，其检测第二绕组的电流; 控制单元，其基于检测到的电流值来计算第一电压指令和第二电压指令; 以及第一可检测性确定单元，其基于第一电压指令和第二电压指令中的至少一个，确定由第一电流检测单元检测的第一绕组的电流的可检测性，其中，控制单元计算第 基于第一绕组的电流检测不到第二绕组的检测电流值的第一电压指令和第二电压指令。
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9.发明申请公开(公告)号：US20160200352A1
公开(公告)日：2016-07-14
申请号：US14912185
申请日：2013-11-13
发明人： Isao KEZOBO , Yoshihiko KIMPARA , Akira FURUKAWA
摘要： Provided is a control device for a rotary machine including: a power feed unit configured to feed electric power in accordance with a power feed command to a rotary machine; a rotation-state detecting unit configured to detect a rotation state of the rotary machine; a torque detecting unit configured to detect an output torque output from the rotary machine; an abnormality determining unit configured to determine an abnormality in the rotation-state detecting unit or the torque detecting unit; and an excitation-command generating unit configured to generate an excitation command for oscillating the rotary machine, in which the power feed command is generated based at least on the excitation command, and the abnormality determining unit is configured to determine the abnormality in the detecting units based on a response of the rotation state and a response of the output torque to the excitation command.
摘要翻译： 本发明提供一种旋转机械的控制装置，其特征在于，包括：供电单元，被配置为根据供电命令将电力供给到旋转机器; 旋转状态检测单元，其被配置为检测所述旋转机械的旋转状态; 扭矩检测单元，被配置为检测从所述旋转机器输出的输出转矩; 异常确定单元，被配置为确定旋转状态检测单元或扭矩检测单元中的异常; 以及激励指令生成部，其被配置为产生用于振荡所述旋转机械的激励命令，所述激励命令至少基于所述激励命令产生所述供电命令，所述异常判定部被配置为确定所述检测部中的异常 基于旋转状态的响应和输出转矩对激励命令的响应。
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公开(公告)号：US20160031477A1
公开(公告)日：2016-02-04
申请号：US14781330
申请日：2013-05-15
发明人： Yoshihiko KIMPARA , Akira FURUKAWA
IPC分类号： B62D5/04
CPC分类号： B62D5/0463 , B62D5/0472
摘要： The electric power steering control device includes: a steering wheel; a torque generation unit for generating a generated torque for assisting a torque generated by steering by a driver; a torque detection unit for detecting a torsion generated between the steering wheel side and the torque generation unit side as a detected torque; an assist torque command calculation unit for calculating, based on the detected torque, an assist torque command for assisting the steering by the driver; and a differential rotational speed calculation unit for calculating a difference in a rotational speed generated between the steering wheel side and the torque generation unit side as a differential rotational speed, in which the torque generation unit generates the generated torque based on a compensation torque, which is set depending on the assist torque command and the differential rotational speed.
摘要翻译： 电动助力转向控制装置包括：方向盘; 转矩产生单元，用于产生用于辅助驾驶员转向产生的转矩的产生转矩; 转矩检测单元，用于检测在方向盘侧和转矩产生单元侧之间产生的扭矩作为检测转矩; 辅助转矩指令计算单元，用于基于检测到的转矩来计算用于辅助驾驶员的转向的辅助转矩指令; 以及微分转速计算单元，用于计算在方向盘侧和转矩产生单元侧之间产生的转速差作为差动转速，其中转矩产生单元基于补偿转矩产生产生的转矩，其中 根据辅助转矩指令和差速转速来设定。
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