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公开(公告)号：US12132426B2
公开(公告)日：2024-10-29
申请号：US17536078
申请日：2021-11-28
申请人： MITSUBA Corporation
发明人： Miya Yamada , Kota Fukashiro
CPC分类号： H02P23/0004 , H02P23/14
摘要： A motor control device includes: a target value acquisition part acquiring a target value of a control parameter of a motor; an operation amount calculation part calculating an operation amount; an output acquisition part acquiring an output of the control parameter; and a deviation calculation part calculating a deviation between the target value and the output. The operation amount calculation part includes: a first calculation part calculating a first value corresponding to the deviation; a second calculation part calculating a second value in a range not exceeding a predetermined upper limit value based on an integrated value of the deviation; and a third calculation part calculating the operation amount in a range not exceeding an operation amount upper limit value based on the first and second values. The predetermined upper limit value is larger than a value obtained by subtracting the first value from the operation amount upper limit value.
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公开(公告)号：US12113521B2
公开(公告)日：2024-10-08
申请号：US17397133
申请日：2021-08-09
发明人： Ashish Ojha , Krishnamurthy Shankar , Siddhartha Gopal Krishna , Priyank Anand , Ganapathi Hegde
IPC分类号： H03K17/687 , H02P23/00 , H03K5/24
CPC分类号： H03K17/687 , H02P23/00 , H03K5/24
摘要： A control circuit regulates the propagation delay of a field effect transistor (FET) before the FET transitions to the Miller region by applying a pre-charge current for a fixed duration to the gates of the FET. After the fixed duration, the current is reduced to a lower drive current level which is based on a desired output voltage slew rate. After the FET transitions to the Miller region, the output voltage slews down in accordance with the output voltage slew rate. By regulating the slew-rate of the output voltage in the Miller region and regulating the propagation delay of the FET prior to the Miller region, the control circuit reduces electromagnetic interference (EMI) caused by the switching of the FET, thereby improving electromagnetic compatibility (EMC) of switch mode driver systems without increasing the propagation delay of the FET.
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公开(公告)号：US20240275319A1
公开(公告)日：2024-08-15
申请号：US18442670
申请日：2024-02-15
申请人： BorgWarner Inc.
发明人： Dave A. Fulton , Cong Ma , Eric Strauss
IPC分类号： H02P23/00
CPC分类号： H02P23/00
摘要： Embodiments of the disclosure provide a control circuit operable to control voltage delivery to a multi-component load. The control circuit is electronically coupled to a first component of the multi-component load. The control circuit is further electronically coupled to a second component of the multi-component load. The control circuit is operable to, responsive to an output voltage of a source, generate a second component voltage and provide the second component voltage to the second component of the multi-component load. A peak value of the second component voltage is less than the output voltage.
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公开(公告)号：US12015363B2
公开(公告)日：2024-06-18
申请号：US17948468
申请日：2022-09-20
申请人： Rohm Co., Ltd.
发明人： Yoshito Otaguro
摘要： A motor drive circuit includes: a PWM signal generation part configured to generate a PWM signal based on a count value of a counter; a detection part configured to detect a zero crossing of a counter electromotive voltage generated in a coil of a motor; a prediction part configured to predict an arrival timing of the zero crossing of the counter electromotive voltage; a stop part configured to stop a counting operation of the counter after a first time point going back from the arrival timing predicted by the prediction part; and a reset part configured to reset the count value at a timing at which the detection part detects the zero crossing of the counter electromotive voltage.
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公开(公告)号：US20240181896A1
公开(公告)日：2024-06-06
申请号：US18073042
申请日：2022-12-01
CPC分类号： B60L15/2045 , H02P23/0009 , B60K2026/028 , B60L2240/12 , B60L2240/14 , B60L2240/26 , B60L2240/421 , B60L2240/423
摘要： An electric vehicle acceleration control system includes an electric motor configured to drive wheels of an electric vehicle, a steering wheel configured to steer the wheels of the electric vehicle, an acceleration paddle adjacent the steering wheel, and a vehicle control module configured to, in response to detecting activation of the acceleration paddle, set a target speed value, determine an average acceleration value to reach the target speed value, obtain a stored torque profile according to the target speed value and the average acceleration value, the stored torque profile including a specified torque value for each of multiple speed breakpoints, and control the electric motor by commanding the specified torque value at each of the multiple speed breakpoints.
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6.发明公开公开(公告)号：US20240178784A1
公开(公告)日：2024-05-30
申请号：US18519170
申请日：2023-11-27
IPC分类号： H02P29/024 , H02P23/00 , H02P27/06
CPC分类号： H02P29/024 , H02P23/0022 , H02P27/06
摘要： The disclosure relates to the field of motor control, and more specifically, to a fault-tolerant control method and apparatus for an open-circuit fault in an alternating current motor and an inverter thereof, a computer device, and a computer storage medium. The method includes: A: determining, based on fault information of the alternating current motor and the inverter for driving the alternating current motor, a rotor fault position interval corresponding to each fault phase in one or more fault phases; B: establishing a fault-tolerant control constraint model, where the fault-tolerant control constraint model includes an open-circuit fault equation applicable to each fault phase for the corresponding rotor fault position interval; and C: determining, with the fault-tolerant control constraint model as a constraint, a phase current reference value by using a fault-tolerant control algorithm.
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公开(公告)号：US20240146226A1
公开(公告)日：2024-05-02
申请号：US18384002
申请日：2023-10-26
申请人： Jacobi Motors, LLC
CPC分类号： H02P23/0027 , H02P5/68 , H02P25/08
摘要： A system for shifting operation modes of Variable Flux Memory Motor (VFMM) from external inputs includes one or more VFMMs that convert electrical power to kinetic energy, the one or more VFMMs being configured to shift to any one of a plurality of operation modes, one or more man-machine interfaces that receive one or more external inputs from a user, the one or more external inputs being indicative of a target operation mode from the plurality of operation modes selected by the user, and a controller that shifts the operation mode of the one or more VFMMs to the target operation mode based on the one or more external inputs received from the one or more man-machine interfaces.
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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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9.发明公开公开(公告)号：US20240088808A1
公开(公告)日：2024-03-14
申请号：US18259771
申请日：2021-12-24
发明人： Yutaka SAITO , Atsushi FUJITA , Shota ISHIGAMI
CPC分类号： H02P23/0031 , D05B69/12 , G01D5/2455 , H02P23/14 , B60K1/00
摘要： One aspect of a position estimation method of the present invention includes: a learning step of acquiring learning data necessary for estimation of a rotational position of a rotor on the basis of an input sensor signal; and a position estimation step of estimating the rotational position of the rotor on the basis of the input sensor signal and the learning data. The learning step is performed, thereby acquiring, as the learning data, data indicating the correspondence relationship between a segment number associated with a section included in each of a plurality of quadrants and a pole pair number representing a pole pair position. The position estimation step is performed, thereby determining an initial position of the rotor on the basis of the input sensor signal and the learning data.
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公开(公告)号：US11923792B2
公开(公告)日：2024-03-05
申请号：US18021136
申请日：2021-08-05
发明人： Daniel Dubber , Matthias Sandkaul
IPC分类号： H02P23/14 , G05B19/4155 , H02P23/00
CPC分类号： H02P23/14 , G05B19/4155 , H02P23/0077 , G05B2219/41329
摘要： A computer-implemented method of predicting conditions of machines as well as a corresponding data processing system, computer program and computer-readable medium are disclosed. A technical specification of a machine is received. A data set including at least one current operational parameter of the machine is continuously received. A current load of the machine is continuously derived based on the provided technical specification and the received data set via a knowledge base. A current condition of the machine is continuously predicted by integrating over the derived current load and all previously derived current loads.
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