公开(公告)号：US11616462B1

公开(公告)日：2023-03-28

申请号：US17558359

申请日：2021-12-21

申请人： INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

发明人： Chia-Min Ting ,  Wen-Che Shen ,  Chun-An Lin ,  Ya-Ling Chang

IPC分类号： H02P23/14 ,  H02P6/08 ,  H02P6/34

摘要： A motor parameter estimation method includes obtaining an operation signal of a motor, wherein the operation signal includes an encoder signal, a phase current and a driving voltage, obtaining a number of poles according to the encoder signal and the phase current, performing a simulation procedure according to the driving voltage, the number of poles and an initial random parameter set, wherein the simulation procedure is calculating a simulation response current, calculating an error value between the simulation response current and the phase current, determining whether the error value falls into a threshold range, if the error value falls outside of the threshold range, performing the simulation procedure according to the driving voltage, the number of poles and an update random parameter set, and if the error value falls into of the threshold range, outputting the number of poles and the initial random parameter set.

公开(公告)号：US11489468B2

公开(公告)日：2022-11-01

申请号：US16926929

申请日：2020-07-13

申请人： FANUC CORPORATION

发明人： Kodai Akashi ,  Hidetoshi Uematsu

IPC分类号： H02P6/34 ,  G06F30/20 ,  G06F17/18 ,  G06F111/10

摘要： A motor selection device is equipped with a speed calculation unit that calculates an average speed from a speed waveform of a motor that drives a predetermined driven object, the speed waveform being obtained when the driven object is made to perform a prescribed operation, a current calculation unit that calculates a root mean square current from a current waveform of the motor that drives the driven object, the current waveform being obtained when the driven object is made to perform the prescribed operation, a storage unit that stores a motor characteristic corresponding to a speed of a target motor serving as an object to be selected, and a determination unit that determines whether or not the prescribed operation by the target motor is possible, using the motor characteristic corresponding to the average speed, and the root mean square current.

公开(公告)号：US11469704B2

公开(公告)日：2022-10-11

申请号：US17163990

申请日：2021-02-01

申请人： Regal Beloit America, Inc.

发明人： Brian L. Beifus ,  Paul Nathanael Selking ,  Vijay Dayaldas Gurudasani ,  Michael R. Koller

IPC分类号： H02P29/024 ,  H02P6/34 ,  G05B23/02 ,  H02P29/02 ,  H02P6/06

摘要： A motor controller for an electric motor includes an enclosure and a processing device, memory device, and communication interface disposed within the enclosure. The processing device is configured to control the electric motor and collect operating information from the electric motor during operation of the electric motor. The memory device is communicatively coupled to the processing device. The memory device is configured to receive and store the operating information collected during operation of the electric motor. The communication interface is communicatively coupled to the processing device and the memory device, and is configured to enable access to the operating information stored on the memory device by a computing device disposed remotely from the electric motor.

公开(公告)号：US20210218353A1

公开(公告)日：2021-07-15

申请号：US17083703

申请日：2020-10-29

申请人： Delta Electronics, Inc.

发明人： Ching-Hsiung Tsai ,  Yen-Ming Lu ,  Chia-Hui Chen

IPC分类号： H02P6/34 ,  H02P21/18 ,  H02P29/00

摘要： An electronic device includes a motor, a sensing device and a controller. The motor provides a motive power to the load. The sensing device measures a plurality of motion parameters of the motor. The controller calculates a real system parameter between the motor and the load according to the motion command and the plurality of motion parameters. According to the motion command and the plurality of motion parameters, the controller acquires a real value of a rotation speed of the motor. Moreover, controller establishes a system model according to the motion command and the real system parameter so as to acquire an estimated value of the rotation speed of the motor. If the first mean square error is not smaller than the first target value, the controller performs a particle swarm optimization algorithm to change the estimated value of the rotation speed of the motor.

公开(公告)号：US20210075304A1

公开(公告)日：2021-03-11

申请号：US16642785

申请日：2018-08-14

申请人： ZF Friedrichshafen AG

发明人： Joao Bonifacio

IPC分类号： H02K21/24 ,  H02P6/34 ,  H02P21/18

摘要： The device contains a regulator and an actuator connected electrically to the regulator at the input side and that can be connected electrically to the electric motor at the output side. An input point is interconnected electrically between the regulator and actuator at which an electric detection signal can be input A first return unit connected in parallel to the regulator and the actuator returns a first return signal to the regulator representing a version of an output signal of the actuator transformed and processed by the first return unit. A second return unit returns a second return signal to the first return unit and/or the actuator and represents a version of the output signal of the actuator transformed by the first return unit and processed by the second return unit. The second return signal represents an angle between the rotor and the stator in the electric machine.

公开(公告)号：US20210021214A1

公开(公告)日：2021-01-21

申请号：US16926929

申请日：2020-07-13

申请人： FANUC CORPORATION

发明人： Kodai Akashi ,  Hidetoshi Uematsu

IPC分类号： H02P6/34 ,  G06F17/18 ,  G06F30/20

摘要： A motor selection device is equipped with a speed calculation unit that calculates an average speed from a speed waveform of a motor that drives a predetermined driven object, the speed waveform being obtained when the driven object is made to perform a prescribed operation, a current calculation unit that calculates a root mean square current from a current waveform of the motor that drives the driven object, the current waveform being obtained when the driven object is made to perform the prescribed operation, a storage unit that stores a motor characteristic corresponding to a speed of a target motor serving as an object to be selected, and a determination unit that determines whether or not the prescribed operation by the target motor is possible, using the motor characteristic corresponding to the average speed, and the root mean square current.

公开(公告)号：US10775209B2

公开(公告)日：2020-09-15

申请号：US15737384

申请日：2016-06-07

申请人： Robert Bosch GmbH

发明人： Benjamin Lechner ,  Daniel Zirkel ,  Daniel Raichle ,  Michael Ungermann

IPC分类号： G01D18/00 ,  H02P6/34 ,  G01D5/00

摘要： The present invention provides a control circuit (10; 110; 210; 310) and a method for checking the plausibility of a rotor position angle. The control circuit is designed with: a rotor position angle determination device (12) for determining a first rotor position angle, φ(tk), at a first time, tk, and at least one second rotor position angle, φ(tk−1), at a second time, φk−1, before the first time, tk; a computing device (14; 114; 214; 314) for determining a rotor position angle, mod(tk), to be expected at the first time, tk, from a computational model of the computing device (14; 114; 214; 314) using at least the second rotor position angle, φ(tk−1); and a plausibility-checking device (16) for outputting a signal (51) which indicates the determined first rotor position angle, φ(tk), as plausible if an amount of a difference between the rotor position angle, mod(tk), to be expected and the determined first rotor position angle, φ(tk), does not exceed a predetermined threshold value.

公开(公告)号：US10761492B2

公开(公告)日：2020-09-01

申请号：US15478716

申请日：2017-04-04

申请人： Sevcon Limited

发明人： Philip Eagleton

IPC分类号： H02P27/00 ,  G05B9/02 ,  H02P7/298 ,  H02P6/34 ,  H02P7/03 ,  B60L50/51 ,  H02P6/06 ,  H02P3/06

摘要： An electric motor controller having a front face and a rear face, the front face carrying a plurality of AC output couplings and the controller carrying a converter configured to convert a received DC supply into an output AC supply for controlling an electric motor, the AC output couplings being disposed symmetrically about an axis of symmetry of the controller on the front face of the controller. Also described is an apparatus comprising: a DC series motor; and a first current supply configured to supply a first current to an armature of the DC series motor; a second current supply configured to supply a second current to a field winding of the DC series motor; and a controller configured to control the first current supply to supply the first current based on a required torque output for the motor, and to control the second current supply to supply the second current based on the first current.

公开(公告)号：US10725440B1

公开(公告)日：2020-07-28

申请号：US15443646

申请日：2017-02-27

申请人： The MathWorks, Inc.

发明人： Kerry E. Grand ,  Yang Xu ,  Ebrahim M. Mestchian

IPC分类号： G06F30/30 ,  H02P6/34 ,  G05B13/04 ,  G06F30/20 ,  G07B17/00 ,  G06F30/17 ,  H02P21/22

摘要： Embodiments include techniques for estimating unknown or missing values for parameters of a motor based on high-level motor information and using the estimated parametric values in generating an executable model for modeling the behavior of the motor. An aspect of the techniques involves assumptions used to establish the predetermined parametric values that are applied to the algorithm for deriving estimates of the unknown parametric values for the motor. The estimated parametric values may then be used in the executable model of the motor to enable development and simulation of a plant (e.g., a closed loop system) including a plant model having a dynamic controller model and a lumped parameter model of a modeling environment of a technical computing environment executing on a data processing system. The simulation of the plant loop can be sufficient to test the dynamic (e.g., feedback-based) controller within a closed loop system, e.g., test motion control of a motorized vehicle seat.

公开(公告)号：US20200076337A1

公开(公告)日：2020-03-05

申请号：US16551197

申请日：2019-08-26

申请人： MILWAUKEE ELECTRIC TOOL CORPORATION

发明人： Jonathan E. Abbott ,  James Wekwert ,  Logan M. Hietpas ,  John S. Scott ,  Troy C. Thorson

IPC分类号： H02P6/06 ,  H02K7/116 ,  H02K11/00 ,  H02K11/27 ,  H02K11/33 ,  H02K21/16 ,  H02P6/28 ,  H02P6/34 ,  H01M2/10 ,  B08B9/032 ,  F16H1/28 ,  F16H1/14

摘要： A stand-alone motor unit for use with a piece of power equipment includes a housing and a flange coupled to the housing on a first side thereof. A plurality of apertures through the flange defines a first bolt pattern that matches an identical, second bolt pattern defined in the piece of power equipment. An electric motor has a power output of at least about 2760 W. The motor includes a stator having a nominal outer diameter of up to about 80 mm and a rotor supported for rotation within the stator. A power take-off shaft receives torque from the rotor and protrudes from one of the flange or a second side of the housing. A controller is positioned within the housing and electrically connected to the motor. A battery pack for powering the motor has battery cells having a nominal voltage of up to about 80 V.