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公开(公告)号：US11967912B2
公开(公告)日：2024-04-23
申请号：US17261642
申请日：2019-06-17
IPC分类号： H02P23/14 , B60T1/06 , B60T13/74 , F16D65/18 , F16D121/24 , F16D125/20 , H02P23/00 , H02P23/12 , H03H17/02
CPC分类号： H02P23/14 , B60T1/065 , B60T13/746 , F16D65/18 , H02P23/0022 , H02P23/12 , H03H17/0202 , F16D2121/24 , F16D2125/20 , H03H2017/0205
摘要： An object of the present invention is to provide a motor control device capable of estimating a delay with high accuracy even in a case where there is a fluctuation in disturbance torque or delay time and of suppressing the influence of the delay. For this end, the present invention includes a motor MTR, an ECU 2 that controls the rotation of the motor MTR, and an ECU 1 that sends a torque command to the ECU 2 based on a command value. The ECU 1 includes a disturbance estimation block 100 and a delay estimation block 200. The disturbance estimation block 100 estimates disturbance torque (τd) using a torque command input to the ECU 2 and a feedback value of the motor MTR. The delay estimation block 200 estimates a delay using a torque command output from the ECU 1, the feedback value of the motor MTR, and the disturbance torque (τd).
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公开(公告)号：US11764709B2
公开(公告)日：2023-09-19
申请号：US17376163
申请日：2021-07-15
发明人： Ching-Feng Lai
CPC分类号： H02P6/153
摘要： A motor controller comprises a switch circuit and a control unit. The switch circuit is coupled to a motor for driving the motor. The control unit generates a control signal to control the switch circuit. The motor controller determines a non-excitation time. When the motor is in a locked state, the motor controller enables the non-excitation time to be a variable value. The motor controller utilizes the non-excitation time to achieve a lock protection function. The motor controller determines whether the motor is in the locked state by detecting a rotor speed or a rotor temperature. Moreover, the motor controller further comprises a driving signal, where the driving signal has the non-excitation time.
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公开(公告)号：US11736046B2
公开(公告)日：2023-08-22
申请号：US17565908
申请日：2021-12-30
申请人： LG ELECTRONICS INC.
发明人： Ki Wook Lee , Ha Min Song , Kwang Sik Kim
CPC分类号： H02P6/22 , D06F34/08 , D06F37/304 , H02K11/225 , H02P6/182
摘要： Disclosed is a motor control apparatus including an inverter part configured to convert DC power into AC power and provide the AC power to a motor, and a controller configured to control driving of the motor by using the inverter part, the controller configured to identify a stop position of a rotor in previous driving of the motor, and control the inverter part to apply an input signal of a specific pattern to the motor according to a start of driving the motor, wherein a phase of the input signal of the specific pattern is determined on the basis of the stop position of the rotor. Other example embodiments may be provided.
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公开(公告)号：US20210265936A1
公开(公告)日：2021-08-26
申请号：US17261642
申请日：2019-06-17
摘要： An object of the present invention is to provide a motor control device capable of estimating a delay with high accuracy even in a case where there is a fluctuation in disturbance torque or delay time and of suppressing the influence of the delay. For this end, the present invention includes a motor MTR, an ECU 2 that controls the rotation of the motor MTR, and an ECU 1 that sends a torque command to the ECU 2 based on a command value. The ECU 1 includes a disturbance estimation block 100 and a delay estimation block 200. The disturbance estimation block 100 estimates disturbance torque (τd) using a torque command input to the ECU 2 and a feedback value of the motor MTR. The delay estimation block 200 estimates a delay using a torque command output from the ECU 1, the feedback value of the motor MTR, and the disturbance torque (τd).
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公开(公告)号：US10892695B2
公开(公告)日：2021-01-12
申请号：US16841952
申请日：2020-04-07
发明人： Yugo Tadano , Takao Akiyama , Takashi Yamaguchi
摘要： A low-frequency torque controller 9 outputs a low-frequency torque controller output τdc* based on a torque command value τ* and a torque detection value τdet, and a vibrational torque controller 11 outputs a vibrational torque command value τpd* based on the torque command value τ*, the torque detection value τdet, and a rotational phase detection value θ. Meanwhile, in a high-frequency resonance suppression controller, an inverter torque command value τinv* is outputted based on the torque detection value τdet and a corrected torque command value τr* obtained by adding the low-frequency torque controller output τdc* to the vibrational torque command value τpd*. The invention thus provides shaft torque vibrational control of a motor drive system wherein engine vibrational torque command values including distortion components are tracked while entirely removing the influence of resonance, non-periodic disturbances, and periodic disturbances.
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公开(公告)号：US10753790B2
公开(公告)日：2020-08-25
申请号：US16449875
申请日：2019-06-24
IPC分类号： G01H1/00 , G01N29/46 , G01N29/14 , G01N29/44 , G01H3/04 , G01M7/00 , G01M13/028 , G01M13/045 , H02P6/10 , H02P23/12 , H02P23/14
摘要： An improved system and method for analyzing motor performance to detect vibration of an electric machine controlled by a motor drive is disclosed. A load observer determines an estimated torque present as a load on the motor as a function of input signals corresponding to a desired torque to be generated by the motor and to a measured angular position of the motor during operation. The motor drive determines a frequency response of the estimated torque to identify at what magnitude and frequency any vibration components are present within the estimated torque signal. The motor drive compares the frequency response of the estimated torque signal to set points. If the measured magnitude of vibration at a particular frequency, as seen in the frequency response, exceeds a threshold set in one of the set points for that frequency, the motor drive generates an output signal indicting an excessive vibration is present.
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公开(公告)号：US10700622B2
公开(公告)日：2020-06-30
申请号：US16342558
申请日：2017-08-29
发明人： Daisuke Sato
摘要： A brushless motor control apparatus includes an inverter circuit that applies a drive voltage to a winding of each phase of a brushless motor, a rotor magnetic pole detector that outputs a magnetic pole detection signal corresponding to a rotor position of the brushless motor based on a change of a magnetic pole detected by a Hall sensor, a rotor position estimator that outputs, each time a level of the magnetic pole detection signal is switched, an estimated rotor position signal that indicates an estimated rotor position with an electrical angle and indicates a predetermined electrical angle corresponding to the level after switching, a current detector that detects a current supplied to the inverter circuit as a power source current value, and an electrical angle correction unit that corrects the estimated rotor position signal by determining an electrical angle offset based on fluctuation in the power source current value and adding the electrical angle offset to the electrical angle indicated by the estimated rotor position signal.
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8.发明授权公开(公告)号：US10333439B2
公开(公告)日：2019-06-25
申请号：US15402489
申请日：2017-01-10
摘要： At least one example embodiment discloses a method of estimating a position of a rotor in a motor. The method includes obtaining a current regulation quality index based on a current command and a measured current, determining an estimated position of the rotor based on the current regulation quality index and position estimation data and controlling the motor based on the estimated position of the rotor.
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公开(公告)号：US10280038B2
公开(公告)日：2019-05-07
申请号：US15516947
申请日：2015-01-13
发明人： Takahiro Ito
摘要： An elevator control device includes a filter to remove a direct current component and a torque component derived from rope imbalance from a torque command value applied to a drive motor, and an inertia identifying mechanism to identify an inertia value of an elevator based on an output obtained when a speed detection signal is input into the filter, and an acceleration converting mechanism, which are connected in series, and an output obtained when the torque command value is input into the filter. As a result, the inertia value of a high-lift elevator can be calculated accurately.
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公开(公告)号：US10135255B2
公开(公告)日：2018-11-20
申请号：US15046966
申请日：2016-02-18
申请人： FANUC Corporation
发明人： Wataru Kuroki
摘要： A machine learning apparatus includes a state observation unit which observes a state variable including at least one of data associated with the value of a DC voltage in a DC link, data associated with the amount of power supply regeneration representing the amount of power returned from the DC link to an AC power supply by a power supply regeneration operation by a converter, and data associated with the occurrence or nonoccurrence of an overvoltage alarm indicating that the DC voltage of the DC link has exceeded a preset overvoltage alarm level, and a learning unit learns conditions associated with the power supply regeneration operation by the converter, in accordance with a training data set defined by the state variable.
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