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1.发明授权公开(公告)号：US11641169B2
公开(公告)日：2023-05-02
申请号：US17184395
申请日：2021-02-24
发明人： Jadav Das
IPC分类号： H02P25/06 , H02P6/00 , H02P25/064
摘要： A motor controller is provided that executes a commutation routine in one of a plurality of operating modes to regulate current provided to drive coils in a linear motion system. The motor controller generated currents for each of the drive coils in a first operating mode to minimize the copper losses in the drive coils, in a second operating mode to maximize the force applied to the mover, in a third operating mode to provide balanced currents between the drive coils, and in a fourth operating mode to provide currents according to a selected operating point that combines characteristics of the first three operating points. The motor controller may also monitor each of the drive coils for saturation and redistribute at least a portion of the current required to control operation of the mover to the other drive coils when one of the drive coils is saturated.
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公开(公告)号：US20230090794A1
公开(公告)日：2023-03-23
申请号：US17512896
申请日：2021-10-28
发明人： Tsung-Han YANG , Yen-Chih WANG , Ming-Jun HSIAO , Tsung-Nan WU
摘要： An electronic device for controlling an LRA (Linear Resonant Actuator) includes a signal generator, a driver, a delay unit, a sensor, and a DSP (Digital Signal Processor). The signal generator generates a digital signal. The driver drives the LRA according to the digital signal. The delay unit delays the digital signal for a predetermined time, so as to generate an estimated voltage signal. The sensor detects the current flowing through the LRA, so as to generate a sensing current signal. The DSP controls the resonant frequency or the gain value of the signal generator according to the estimated voltage signal and the sensing current signal.
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公开(公告)号：US20230027749A1
公开(公告)日：2023-01-26
申请号：US17783388
申请日：2020-12-09
发明人： Chafic ABU ANTOUN , Florian SCHMID , Albert BINDER , Manuel GUT
摘要： A tool for working a substrate, the tool having a stator and a working piston, which is intended to move relative to the stator along a working axis, also having a drive, which is intended to drive the working piston from a starting position along the working axis to the substrate, the drive comprising a first piston coil arranged on the working piston and a first stator coil arranged on the stator, and the first piston coil being intended to enter the first stator coil during a movement of the working piston relative to the stator along the working axis.
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公开(公告)号：US11527982B2
公开(公告)日：2022-12-13
申请号：US16536980
申请日：2019-08-09
摘要： A linear motor system comprises a plurality of stator elements that have one or more magnetic coils for generating a magnetic flux in the respective stator element and at least one mover that has at least one magnetic element that interacts with the magnetic coils of the stator elements. The mover is moved by means of activation of at least one stator element in a direction of movement relative to the stator elements. At least one selected stator element is configured to change with respect to the magnetic flux from a first state into a second state or to have the second state permanently while at least some of the other stator elements remain in the first state so that the selected stator element exerts a braking and/or holding force on the mover in the second state.
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5.发明授权公开(公告)号：US11356043B2
公开(公告)日：2022-06-07
申请号：US17298600
申请日：2020-08-27
发明人： Wei Xu , Qizhe Wang , Xiang Li , Kaiju Liao , Yirong Tang , Yi Liu
摘要： The disclosure discloses a linear oscillatory machine control method based on an adaptive full-order displacement observer. The method includes the following steps: a full-order displacement observer is constructed; the system equivalent spring elasticity coefficient and equivalent damping coefficient are used as parameters to be identified, the full-order displacement observer serves as an adjustable model, and the machine itself serves as a reference model; an error state equation is constructed based on the error of the adjustable model and the reference model; Popov's hyperstability theory is adopted to obtain the operation upper critical frequency and the adaptive formula of adjustable parameters that make the error state equation converge; the machine is operated at a frequency lower than the upper critical frequency, the machine current and voltage signals measured during the operation process are input into the full-order displacement observer, thereby realizing frequency tracking and displacement control.
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公开(公告)号：US20220014123A1
公开(公告)日：2022-01-13
申请号：US17293377
申请日：2019-12-12
发明人： Guanxing ZHAO , Shaofu WU , Dajun WU , Zhijun MENG
IPC分类号： H02P3/02 , G06F3/01 , H02P3/18 , H02P25/032 , H02P25/06
摘要： A linear resonant device and a braking method for the same. The linear resonant device comprises a linear resonant motor and a drive chip. The drive chip pre-stores a drive waveform and at least one first braking waveform therein. The method comprises: determining, in response to a braking instruction, whether vibration of the linear resonant motor meets a first condition while being driven by the drive waveform; and if so, controlling the drive chip to drive, by using the first braking waveform, the linear resonant motor and to conduct a first braking process for the linear resonant motor, wherein the first braking waveform comprises at least two pulse waveforms, and an amplitude value of each of the at least two pulse waveforms gradually decreases along a propagation direction of the first braking waveform.
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公开(公告)号：US10985675B2
公开(公告)日：2021-04-20
申请号：US16414408
申请日：2019-05-16
申请人： SONY CORPORATION
发明人： Tomoya Takei
摘要： There is provided a drive controller including a determination part that compares a target stop position of a movable body, which is driven by a piezoelectric actuator driven by a piezoelectric element expanded and contracted in response to an applied voltage, with a real position of the movable body acquired on the basis of a position sensor, and determines whether or not the target stop position matches with the real position, and a drive control part that turns off energization of the piezoelectric actuator when the target stop position matches with the real position while the movable body is being driven by the piezoelectric actuator.
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公开(公告)号：US20210099110A1
公开(公告)日：2021-04-01
申请号：US17121856
申请日：2020-12-15
发明人： Jiaqi LIANG
摘要： A motor drive system for a linear motor having a plurality of stator segments and a rotor movable relative to the plurality of stator segments. The motor drive system includes a variable frequency drive comprising at least one energy cell, the variable frequency drive supplying a medium voltage between 1 kV and 100 kV and a plurality of switches operable to connect the variable frequency drive to selected segments of the plurality of stator segments based upon a position of the rotor. The variable frequency drive is connectable to an external energy source to at least one of charge the at least one energy cell or to supply power to the external energy source.
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公开(公告)号：US20210099068A1
公开(公告)日：2021-04-01
申请号：US17121219
申请日：2020-12-14
发明人： Rolf Brinkmann , Uwe Prüssmeier , Lukas Bentfeld
摘要： A stator assembly for a planar electrical motor includes coil conductors arranged in a stator layer, elongated in a first direction and arranged side by side in a second direction perpendicular to the first direction. The coil conductors are connected to form a three-phase system, with a first forward conductor a nnd first return conductor of the first phase connected in series to the first forward conductor, a second forward conductor and second return conductor of the second phase connected in series with the second forward conductor, and a third forward conductor and third return conductor of the third phase connected in series with the third forward conductor. The three-phase system has first and second opposite sides. The first forward conductor and the first return conductor are electroconductively connected in series by first and second horizontal connecting conductors arranged in the stator layer on the second and first side, respectively.
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公开(公告)号：US10897216B2
公开(公告)日：2021-01-19
申请号：US15338102
申请日：2016-10-28
发明人： Jiaqi Liang
摘要： A dynamic linear motor is controlled by determining a relative proximity of a moving rotor of the linear motor to a fixed stator segment of the linear motor using a current location of the moving rotor. A current driving characteristic of the linear motor at the current location of the moving rotor is determined. Settings for the fixed stator segment when the moving rotor reaches the fixed stator segment are identified based on the current driving characteristic. The fixed stator segment is driven based on the settings when the moving rotor reaches the fixed stator segment.
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