公开(公告)号：US11121652B2

公开(公告)日：2021-09-14

申请号：US16724736

申请日：2019-12-23

申请人： Robert Bosch GmbH

发明人： Dominik Denz ,  Haithem Fkaier

IPC分类号： H02K29/06 ,  H02P6/18 ,  H02P29/024 ,  H02P8/36

摘要： A method for determining an interrupted motor phase of an electric motor having at least three windings by means of a control unit is disclosed, wherein voltages induced in the windings are determined on outer conductors of the electric motor by means of at least one measuring unit, wherein the measuring unit is connected to at least one outer conductor of the electric motor via at least one resistor, the induced voltages of the outer conductors of the electric motor are compared with one another, and an interrupted motor phase is registered if the induced voltage differs or if a frequency of the induced voltage differs. A control unit, a computer program and a machine-readable storage medium are also disclosed.

公开(公告)号：US10305402B2

公开(公告)日：2019-05-28

申请号：US15480092

申请日：2017-04-05

申请人： CANON KABUSHIKI KAISHA

发明人： Junya Takatsu

IPC分类号： H02P27/08 ,  H02P8/12 ,  B65H1/04 ,  B65H5/06 ,  H04N1/00 ,  H02M7/5395 ,  H02P8/36 ,  G03G15/00 ,  H02M1/00

摘要： A PWM signal generation unit generates a PWM signal based on a driving voltage so that a midpoint of the longer period out of an H level period and an L level period in each PWM period matches a midpoint of the PWM period. FETs of a full bridge circuit (a driving circuit) are driven according to a PWM signal, and a driving current that corresponds to an A-phase is supplied to a stepping motor. A current detector detects a driving current flowing through an A-phase winding of the motor based on a voltage that is generated across a shunt resistor, at a fixed time point that is in each PWM period and in the H level or L level period that is at the center of the PWM period.

公开(公告)号：US10158318B2

公开(公告)日：2018-12-18

申请号：US15325582

申请日：2015-08-03

申请人： DENSO CORPORATION

发明人： Shinji Nakamoto ,  Koji Sakai

IPC分类号： H02P8/36 ,  H02P29/024 ,  H02P23/00 ,  B60L1/00 ,  H02P27/06 ,  H02J7/00 ,  H02P21/02 ,  H02P21/22 ,  H02P29/032

摘要： In a control device controlling a drive circuit that drives an in-vehicle electric motor based on an output voltage of a DC power source, a capacitor for stabilizing the output voltage is disposed between the DC power source and the drive circuit, and a relay switch is disposed between the DC power source and the capacitor. The control device includes: an anomaly determining device that determines whether an anomaly occurs in a vehicle; and a discharge control device that controls the drive circuit to generate a torque at the electric motor based on an output voltage of the capacitor in a state where the relay switch disconnects between the DC power source and the capacitor when the anomaly determining device determines that the anomaly occurs in the vehicle.

公开(公告)号：US10141816B2

公开(公告)日：2018-11-27

申请号：US14938382

申请日：2015-11-11

申请人： Siemens Energy, Inc.

发明人： Michael D. Garmon ,  Raul Ricardo Rico ,  Bobby A. Warren

IPC分类号： H02K9/19 ,  H02K9/197 ,  H02K9/08 ,  H02K5/12 ,  H02K9/10 ,  H02P8/36 ,  H02K3/24

摘要： Disclosed is a method of operating a large electric generator, the generator having a rotor arranged along a centerline of the generator, a core arranged coaxially and surrounding the rotor; a plurality of stator windings arranged within the core; a stator frame arranged to fixedly support the core and rotationally support the rotor; a gas cooling system that circulates a cooling gas within the generator, the method steps including circulating a cooling liquid that cool the stator windings; sensing an output parameter of the generator; comparing via a control system the sensed output parameter of the generator to a predetermined scheme; and sending a control signal to an adjusting device in accordance with the control system comparison.

公开(公告)号：US09798342B2

公开(公告)日：2017-10-24

申请号：US14629292

申请日：2015-02-23

申请人： Schweitzer Engineering Laboratories, Inc.

发明人： Krishnanjan Gubba Ravikumar ,  Scott M. Manson

IPC分类号： G05F1/625 ,  H02P8/36

CPC分类号： G05F1/625

摘要： Disclosed herein are methods for detecting and correcting a fault induced delayed voltage recovery event in an electric power transmission and distribution system. In some embodiments, a fault detection subsystem may receive an indication of a fault in the electric power transmission and distribution system. The system may also include a load analysis subsystem to analyze a plurality of loads supplied by the electric power system and to generate an estimated response of the loads. A fault analysis subsystem may analyze a plurality of factors relating to the fault and to determine a probability of the fault generating a fault induced delayed voltage recovery event. A control system may then implement a control strategy within a control window following the fault based on the probability of the fault generating a fault induced delayed voltage recovery event and the estimated response of the at least one load.

公开(公告)号：US20160380566A1

公开(公告)日：2016-12-29

申请号：US15189324

申请日：2016-06-22

申请人： LG Innotek Co., Ltd.

发明人： Jin Seob Lee

IPC分类号： H02P8/36 ,  H02K7/06

CPC分类号： H02P8/36 ,  G05B19/404 ,  G05B2219/37094 ,  G05B2219/37124 ,  G05B2219/37277 ,  G05B2219/41099 ,  G05B2219/41206 ,  G05B2219/50043 ,  H02K7/06

摘要： The present invention provides a linear actuator including a motor; a linear driving unit coupled to the motor and including a magnet; a sensor unit configured to sense a change amount of magnetic flux depending on a position of the magnet and convert the sensed change amount of magnetic flux into measured voltage data; a data unit in which reference voltage data corresponding to the change amount of magnetic flux depending on a position of the magnet is stored; and a judging unit configured to compare the reference voltage data with the measured voltage data at the corresponding position of the magnet. The present invention is advantageous in that, by compensation-controlling a position of the motor, feedback control may be performed in the step motor to secure performance of the product to which the present invention is applied

摘要翻译： 本发明提供了一种包括马达的线性致动器; 耦合到电动机并包括磁体的线性驱动单元; 传感器单元，被配置为根据磁体的位置感测磁通量的变化量，并将所感测的磁通变化量转换成测量电压数据; 数据单元，其中存储与磁体的位置相对应的磁通量的变化量的参考电压数据; 以及判断单元，被配置为将所述参考电压数据与所述磁体的相应位置处的所测量的电压数据进行比较。 本发明的优点在于，通过补偿控制电动机的位置，可以在步进电动机中执行反馈控制以确保应用本发明的产品的性能

公开(公告)号：US08299740B2

公开(公告)日：2012-10-30

申请号：US12713728

申请日：2010-02-26

申请人： Teruo Fukao

发明人： Teruo Fukao

IPC分类号： H02P8/36 ,  B60J1/17

CPC分类号： E05F15/695 ,  E05Y2400/504 ,  E05Y2800/428 ,  E05Y2900/55

摘要： A motor drive apparatus for driving a motor in a normal rotation direction or a reverse rotation direction in accordance with a state of operation of an operation switch has a first semiconductor switching device that switches ON/OFF state based on a normal rotation instruction provided by the operation switch, a second semiconductor switching device that switches ON/OFF state based on a reverse rotation instruction provided by the operation switch, a control circuit for controlling drive of the motor in the normal rotation direction or the reverse rotation direction, based on the ON/OFF state of the first and second semiconductor switching devices, and a wetting detection circuit for detecting wetting and controlling operation of the first and second semiconductor switching devices. The control circuit has a first terminal connected to the first semiconductor switching device, a second terminal connected to the second semiconductor switching device, a low level terminal for receiving and outputting a signal having a voltage value lower than a reference voltage value defined in advance, and a high level terminal for receiving and outputting a signal having a voltage value higher than the reference voltage value. When the wetting detection circuit detects wetting, voltage values of the first terminal and the second terminal are less than the reference voltage value. The first terminal and the second terminal are separated from the high level terminal, and are arranged in proximity to the low level terminal.

摘要翻译： 根据操作开关的操作状态，用于沿正常旋转方向或反向旋转方向驱动电动机的电机驱动装置具有：第一半导体开关装置，其基于由所述操作开关提供的正常转动指令来接通/断开状态; 操作开关，基于由操作开关提供的反转指令来切换ON / OFF状态的第二半导体开关装置，用于基于ON而控制电动机沿正转方向或反转方向的驱动的控制电路 / OFF状态，以及用于检测第一和第二半导体开关器件的润湿和控制操作的润湿检测电路。 控制电路具有连接到第一半导体开关器件的第一端子，连接到第二半导体开关器件的第二端子，用于接收和输出具有低于预先定义的参考电压值的电压值的信号的低电平端子， 以及用于接收和输出具有高于参考电压值的电压值的信号的高电平端子。 当润湿检测电路检测到润湿时，第一端子和第二端子的电压值小于参考电压值。 第一端子和第二端子与高电平端子分离，并且布置在低电平端子附近。

公开(公告)号：US20110026375A1

公开(公告)日：2011-02-03

申请号：US12653533

申请日：2009-12-15

申请人： Saburo Manaka ,  Akira Takakura ,  Kenji Ogasawara ,  Kazumi Sakumoto ,  Kazuo Kato ,  Keishi Honmura ,  Takanori Hasegawa ,  Kosuke Yamamoto ,  Hiroshi Shimizu

发明人： Saburo Manaka ,  Akira Takakura ,  Kenji Ogasawara ,  Kazumi Sakumoto ,  Kazuo Kato ,  Keishi Honmura ,  Takanori Hasegawa ,  Kosuke Yamamoto ,  Hiroshi Shimizu

IPC分类号： G04B19/04 ,  H02P8/36

CPC分类号： G04C3/143 ,  H02P8/02 ,  H02P8/36

摘要： When a stepping motor is driven to rotate by a main driving pulse, if an induced signal exceeding a reference threshold voltage is detected only in a third segment, a pulse down operation is performed, and the main driving pulse is not changed when the same is detected in at least a first and the third segments. When it is detected only in a second and the third segments, a rank-up is performed without performing the driving by a correction drive pulse and, when it is not detected in at least the third segment, the rank up operation is performed after the driving by the correction driving pulse.

摘要翻译： 当通过主驱动脉冲驱动步进电机旋转时，如果仅在第三段检测到超过参考阈值电压的感应信号，则执行脉冲下降操作，并且当主驱动脉冲相同时，主驱动脉冲不改变 在至少第一和第三段中检测。 当仅在第二和第三段中检测到时，不执行校正驱动脉冲的驱动来执行排序，并且当至少在第三段中没有检测到时，排列操作在 通过校正驱动脉冲驱动。

公开(公告)号：US20090309534A1

公开(公告)日：2009-12-17

申请号：US12140024

申请日：2008-06-16

申请人： Richard Hunter Harris

发明人： Richard Hunter Harris

IPC分类号： H02P8/36

CPC分类号： H02P8/36 ,  B41J11/42 ,  B41J15/042 ,  H02P8/22

摘要： A system for calculating control pulse duration for optimal stepper motor performance. Duration of control pulses to a stepper motor is increased until stepper motor function begins. The duration of control pulses continues to be increased. It is determined whether stepper motor failure is detected. In response to detecting a failure, the duration of control pulses at the time of the failure is recorded. The duration of control pulses is decreased until stepper motor function is restored. The duration of control pulses continues to be decreased. It is determined whether a second failure is detected. In response to detecting a second failure, the duration of control pulses at the time of the second failure is recorded. A control pulse duration is calculated that optimizes performance of the stepper motor using recorded control pulse duration data. The calculated control pulse duration is applied to the stepper motor.

摘要翻译： 用于计算最佳步进电机性能的控制脉冲持续时间的系统。 对步进电机的控制脉冲的持续时间增加，直到步进电机功能开始。 控制脉冲的持续时间持续增加。 确定是否检测到步进电机故障。 响应于检测到故障，记录故障时的控制脉冲持续时间。 减少控制脉冲的持续时间，直到步进电机功能恢复。 控制脉冲的持续时间继续减小。 确定是否检测到第二个故障。 响应于检测到第二故障，记录在第二故障时的控制脉冲的持续时间。 计算控制脉冲持续时间，使用记录的控制脉冲持续时间数据优化步进电机的性能。 将计算的控制脉冲持续时间应用于步进电机。

公开(公告)号：US20090179635A1

公开(公告)日：2009-07-16

申请号：US12339601

申请日：2008-12-19

申请人： Clinton Cathey

发明人： Clinton Cathey

IPC分类号： G01B7/30 ,  H02P8/36

CPC分类号： H02P8/38

摘要： According to the invention, a method for determining the radial position of a rotatable object is disclosed. The method may include providing targets at known relative radial positions coupled with the object, where a radial distance between any two adjacent targets is substantially not equal to the radial distance between any other two adjacent targets. The method may also include rotating the object about an axis, where the distance of the rotation is believed to be known. The method may further include determining, during rotation, that a first target is in proximity to a point fixed relative to the axis. The method may additionally include determining, during rotation of the object, that a second target is at least in proximity the point fixed relative to the axis. The method may moreover include comparing of the believed known rotation with the known relative radial positions of the plurality of targets.

摘要翻译： 根据本发明，公开了一种用于确定可旋转物体的径向位置的方法。 该方法可以包括在与物体耦合的已知相对径向位置处提供目标，其中任何两个相邻目标之间的径向距离基本上不等于任何其它两个相邻目标之间的径向距离。 该方法还可以包括围绕轴旋转物体，其中旋转的距离被认为是已知的。 该方法还可以包括在旋转期间确定第一目标在相对于轴固定的点附近。 该方法可以另外包括在对象的旋转期间确定第二目标至少邻近于相对于轴固定的点。 该方法还可以包括将相信的已知旋转与多个靶的已知相对径向位置进行比较。