CN111669099B - Method and apparatus for protecting motor in vibration system, and storage medium - Google Patents
Method and apparatus for protecting motor in vibration system, and storage medium Download PDFInfo
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- CN111669099B CN111669099B CN202010589201.5A CN202010589201A CN111669099B CN 111669099 B CN111669099 B CN 111669099B CN 202010589201 A CN202010589201 A CN 202010589201A CN 111669099 B CN111669099 B CN 111669099B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/06—Linear motors
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/032—Reciprocating, oscillating or vibrating motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/02—Arrangements for regulating or controlling the speed or torque of electric DC motors the DC motors being of the linear type
Abstract
The invention provides a motor protection method and equipment in a vibration system and a computer readable storage medium, wherein the motor protection method comprises the following steps: acquiring a time-frequency curve of an original excitation voltage signal; acquiring an anisotropic displacement protection curve, and combining a time-frequency curve to obtain a time domain curve of an original excitation voltage signal; calculating the safety threshold voltage at each moment according to the time domain curve, thereby obtaining a safety threshold voltage curve; respectively judging whether the voltage value of the original excitation voltage signal at each moment is larger than the voltage value at the moment corresponding to the safety threshold voltage curve; if yes, the voltage value of the original excitation voltage signal is corrected according to the voltage value of the moment corresponding to the safety threshold voltage curve. Through the implementation mode, the motor can avoid excessive anisotropic vibration, and the normal operation of the motor is effectively protected.
Description
Technical Field
The present invention relates to the field of motor vibration technologies, and in particular, to a motor protection method and apparatus in a vibration system, and a storage medium.
Background
The wide application of haptic feedback in portable electronic devices and vehicle-mounted touch screens has prompted the rapid development of linear motors. The linear motor is used as a unidirectional electromagnetic driver, can be precisely controlled, provides rich haptic effects and brings perfect haptic experience to users.
Generally, the linear motor drives the tool where the motor is located to reciprocate through the reciprocating motion of the vibrator, so that the vibration touch feeling on the tool is realized. In practical engineering, the unidirectional vibration of the linear motor is often utilized to provide vibration touch, and the unidirectional vibration is also convenient to control when the vibration touch is designed. However, due to the structural characteristics of the linear motor, when the motor is in operation, the vibrator vibrates in other directions (called as "opposite vibration") in addition to reciprocating in a desired direction (called as "X-direction vibration").
In engineering, the X-direction vibration is "expected" designed by a designer, and "unexpected" is brought about when the motor operates during the opposite direction vibration. Therefore, the excitation voltage designed by the staff is the response to the expected direction of the motor, so that the response in other directions is ignored. As is well known, an actual linear motor is a multi-degree of freedom vibration system, and there are a plurality of resonance frequencies, and each direction has its corresponding resonance frequency. Then, the center frequency of the designed excitation voltage, near the resonant frequency corresponding to the opposite direction, causes a large vibration of the opposite direction, resulting in a large "undesired" opposite direction vibration component of the motor, thus causing a deterioration of the haptic effect and even a reduction of the lifetime of the device.
Disclosure of Invention
The invention mainly provides a motor protection method, equipment and a storage medium in a vibration system, which can solve the problems of poor haptic effect and shortened equipment service life caused by overlarge motor anisotropic vibration component in the prior art.
In order to solve the technical problems, the invention adopts a technical scheme that: there is provided a motor protection method in a vibration system, the motor protection method including: acquiring a time-frequency curve of an original excitation voltage signal; acquiring an anisotropic displacement protection curve, and combining the time-frequency curve to obtain a time domain curve of the original excitation voltage signal; calculating the safety threshold voltage at each moment according to the time domain curve, thereby obtaining a safety threshold voltage curve; respectively judging whether the voltage value of the original excitation voltage signal at each moment is larger than the voltage value at the moment corresponding to the safety threshold voltage curve; if yes, correcting the voltage value of the original excitation voltage signal according to the voltage value of the moment corresponding to the safety threshold voltage curve; wherein, the liquid crystal display device comprises a liquid crystal display device,
the acquiring the anisotropic displacement protection curve comprises:
acquiring an anisotropic displacement frequency response curve of equipment under the maximum output voltage;
acquiring a displacement response value of each frequency in the anisotropic displacement frequency response curve;
calculating the displacement response value of each frequency and the threshold value of the anisotropic displacement respectively to obtain the anisotropic displacement protection curve;
calculating the displacement response value of each frequency and the threshold value of the anisotropic displacement to obtain the anisotropic displacement protection curve comprises the following steps:
respectively judging whether a displacement response value of each frequency in the anisotropic displacement frequency response curve is smaller than or equal to a threshold value of the anisotropic displacement;
if yes, the displacement protection value of the corresponding frequency in the opposite displacement protection curve is 1;
if not, the displacement protection value of the corresponding frequency in the anisotropic displacement protection curve is the ratio of the threshold value of the anisotropic displacement to the displacement response value of the corresponding frequency in the anisotropic displacement frequency response curve.
The time-frequency curve for obtaining the original excitation voltage signal comprises the following steps: performing Fourier transformation on the original excitation voltage signal to obtain a time-frequency relationship of the original excitation voltage signal; and marking the center frequency of each moment according to the time-frequency relation to acquire the time-frequency curve.
The step of obtaining the time domain curve of the original excitation voltage signal by combining the time-frequency curve includes: respectively acquiring frequency information corresponding to each moment in the time-frequency curve; and comparing the frequency information corresponding to each moment with the different displacement protection curve respectively to obtain a displacement protection value corresponding to each moment, thereby obtaining the time domain curve.
The calculating the safety threshold voltage at each moment according to the time domain curve to obtain a safety threshold voltage curve includes: obtaining the maximum output voltage of the equipment; and calculating according to the time domain curve and the maximum output voltage of the equipment to obtain the safety threshold voltage curve.
The protection method further comprises outputting the voltage value of the original excitation voltage signal if the voltage value of the original excitation voltage signal is smaller than the voltage value of the moment corresponding to the safety threshold voltage curve.
The protection method further comprises the step of outputting the corrected voltage value of the original excitation voltage signal to a vibration system, so that the device plays the haptic effect based on the corrected voltage value of the original excitation voltage signal.
In order to solve the technical problems, the invention adopts another technical scheme that: the motor protection device in the vibration system comprises a processor and a memory, wherein the memory stores computer instructions, the processor is coupled with the memory, and the processor executes the computer instructions in operation to realize the motor protection method.
In order to solve the technical problems, the invention adopts another technical scheme that: there is provided a computer readable storage medium having stored thereon a computer program for execution by a processor to implement a motor protection method as described above.
The beneficial effects of the invention are as follows: compared with the prior art, the embodiment of the invention corrects the original excitation voltage signal by presetting the anisotropic displacement protection curve, and simultaneously limits the voltage value within the safe voltage range by combining the safe threshold voltage value of the motor, thereby avoiding excessive anisotropic vibration of the motor and effectively protecting the normal operation of the motor.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a schematic flow chart of an embodiment of a motor protection method according to the present invention;
FIG. 2 is a flow chart illustrating an embodiment of the step S100 in FIG. 1 according to the present invention;
FIG. 3 is a schematic diagram of the original excitation voltage signal of the present invention;
FIG. 4 is a graph of the time-frequency relationship of the original excitation voltage signal of the present invention;
FIG. 5 is a schematic diagram of a time-frequency plot of an original excitation voltage signal according to the present invention;
FIG. 6 is a flowchart illustrating the step S200 of FIG. 1 according to an embodiment of the present invention;
FIG. 7 is a schematic illustration of an anisotropic displacement protection curve of the present invention;
FIG. 8 is a flowchart illustrating another embodiment of step S200 in FIG. 1 according to the present invention;
FIG. 9 is a schematic representation of a time domain plot of the present invention;
FIG. 10 is a flowchart illustrating an embodiment of step S300 in FIG. 1 according to the present invention;
FIG. 11 is a schematic block diagram of one embodiment of a motor protection device in a vibration system provided by the present invention;
FIG. 12 is a schematic block diagram of an embodiment of a computer-readable storage medium provided by the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 together, fig. 1 is a flow chart of an embodiment of a motor protection method according to the present invention, as shown in fig. 1, the motor protection method provided by the present invention includes the following steps:
s100, acquiring a time-frequency curve of an original excitation voltage signal.
Referring to fig. 2, fig. 2 is a flow chart of an embodiment of the step S100 of the present invention, where the step S100 of fig. 2 further includes the following sub-steps:
s110, carrying out Fourier transformation on the original excitation voltage signal to obtain the time-frequency relation of the original excitation voltage signal.
In the invention, the obtained original excitation voltage signal V0 is subjected to short-time Fourier transformation, so that the time-frequency relation FT of the original excitation voltage signal is obtained. Referring to fig. 3 and fig. 4, fig. 3 is a schematic diagram of an original excitation voltage signal according to the present invention, and fig. 4 is a schematic diagram of a time-frequency relationship of the original excitation voltage signal according to the present invention. Alternatively, the time-frequency relation analysis based on short-time fourier may refer to the prior art, and will not be described herein.
S120, marking the center frequency of each moment according to the time-frequency relation to acquire a time-frequency curve.
Further, according to the obtained time-frequency relation FT of the original excitation voltage signal, the center frequency of each moment of the time-frequency relation FT is marked, so that a time-frequency curve FC of the original excitation voltage signal is obtained, as shown in fig. 5, and fig. 5 is a schematic diagram of the time-frequency curve of the original excitation voltage signal of the present invention.
S200, acquiring an abnormal displacement protection curve, and combining a time-frequency curve to obtain a time-domain curve of an original excitation voltage signal.
Referring to fig. 6, fig. 6 is a flowchart of an embodiment of step S200 of the present invention, and in this embodiment, the method for obtaining the protection curve for the opposite displacement is shown in fig. 6, specifically, step S200 further includes the following sub-steps:
s210, acquiring an anisotropic displacement frequency response curve of the maximum output voltage of the device.
Specifically, the displacement frequency response curve YZ of the device at the maximum output voltage Vmax can be obtained through software simulation or actual measurement (the magnitude of the sweep frequency measurement response can be adopted in both modes).
S220, obtaining a displacement response value of each frequency in the anisotropic displacement frequency response curve.
S230, calculating the displacement response value of each frequency and the threshold value of the anisotropic displacement respectively to obtain an anisotropic displacement protection curve.
It can be understood that the judgment standard for excessive anisotropic vibration of the motor structure in the invention is as follows: whether the size of the anisotropic displacement of the vibrator exceeds a threshold value of the anisotropic displacement. Wherein different motor structures have different thresholds of different directional displacements. If the magnitude of the anisotropic vibration displacement exceeds the threshold value of the anisotropic displacement, other components can be mounted on the vibrator, and the motor is not normally operated.
Optionally, the displacement response value YZ of each frequency and the structural anisotropic displacement threshold value Yzmax are calculated respectively to obtain an anisotropic displacement protection curve DCP, as shown in fig. 7, and fig. 7 is a schematic diagram of the anisotropic displacement protection curve of the present invention. The different structures have different displacement threshold values, and the obtained different displacement protection curves are also different. Specifically, whether the displacement response value YZ of each frequency in the anisotropic displacement frequency response curve is smaller than or equal to the threshold value Yzmax of the anisotropic displacement is respectively judged;
1. if the obtained displacement response value YZ is greater than the abnormal displacement threshold value Yzmax, the displacement protection value of the corresponding frequency in the displacement protection curve is the ratio of the abnormal displacement threshold value Yzmax and the displacement response value YZ of the corresponding frequency in the abnormal displacement frequency response curve, and the abnormal displacement protection curve DCP is calculated as follows:
DCP＝Yzmax/YZ；
2. if the obtained displacement response value YZ is smaller than or equal to the abnormal displacement threshold value Yzmax, the displacement protection value of the corresponding frequency in the abnormal displacement protection curve is 1, and the abnormal displacement protection curve DCP is calculated as follows:
DCP＝1；
it is understood that the protection value (the weighting value in fig. 7) of the different-displacement protection curve DCP is represented by the frequency f on the abscissa and the protection value (0, 1) on the ordinate, which is different for each frequency point.
Optionally, the protection curve of the opposite displacement obtained by the steps is stored in a memory of the device to be called for use. The device referred to by the present invention may be any device having communication and storage functions, for example: tablet personal computers, mobile phones, electronic readers, remote controllers, personal computers (PersonalComputer, PC), notebook computers, vehicle-mounted equipment, network televisions, wearable equipment and other intelligent equipment with network functions.
Optionally, please further refer to fig. 8, fig. 8 is a flowchart illustrating another embodiment of the step S200 of the present invention, and as shown in fig. 8, the step S200 further includes the following sub-steps:
s210a, frequency information corresponding to each moment in the time-frequency curve is respectively acquired.
Further acquiring frequency information corresponding to each moment in the time-frequency curve FC.
S220a, comparing the frequency information corresponding to each moment with the different displacement protection curve respectively to obtain a displacement protection value corresponding to each moment, thereby obtaining a time domain curve.
According to the time-frequency curve FC, searching the corresponding frequency at each time, further comparing with the different displacement protection curve DCP to obtain the displacement protection value of the corresponding frequency, so as to obtain the displacement protection value corresponding to each time, thereby obtaining the time domain curve PC, as shown in fig. 9, fig. 9 is a schematic diagram of the time domain curve of the present invention.
S300, calculating the safety threshold voltage at each moment according to the time domain curve, thereby obtaining a safety threshold voltage curve.
Referring to fig. 10, fig. 10 is a flowchart of an embodiment of step S300 of the present invention, and as shown in fig. 10, step S300 further includes the following sub-steps:
s310, obtaining the maximum output voltage of the device.
The maximum output voltage value Xmax of the device is obtained.
S320, calculating according to the time domain curve and the maximum output voltage of the equipment to obtain a safety threshold voltage curve.
Further, the time domain curve PC is multiplied by the maximum output voltage value Xmax of the device, thereby obtaining a safety threshold voltage curve VC, which has the expression:
VC＝PC*Xmax；
s400, judging whether the voltage value of the original excitation voltage signal at each moment is larger than the voltage value at the moment corresponding to the safety threshold voltage curve or not respectively.
Further, after the safety threshold voltage curve VC is obtained, the original excitation voltage signal is compared with the safety threshold voltage curve. Specifically, it is determined whether the voltage value of the original excitation voltage signal V0 at each time is greater than the voltage value at the time corresponding to the safety threshold voltage curve VC, that is, it is determined whether the voltage value V0 (t) of the original excitation signal is greater than the safety threshold voltage VC (t) at the corresponding time in a point-by-point comparison manner, if so, the step S500 is entered, and if not, the step S600 is entered.
S500, correcting the voltage value of the original excitation voltage signal according to the voltage value of the moment corresponding to the safety threshold voltage curve.
If the voltage value V0 (t) of the original excitation signal is greater than VC (t), correcting the voltage value V0 (t) of the original excitation signal to be the safety threshold voltage VC (t) at the corresponding moment, and outputting VC (t) to the vibration system so that the device plays the haptic effect based on the corrected voltage value of the original excitation voltage signal.
S600, outputting the voltage value of the original excitation voltage signal.
If the voltage value V0 (t) of the original excitation signal is judged to be less than VC (t), the voltage value V0 (t) of the original excitation signal is directly output to the vibration system without correcting the original excitation voltage signal, so that the device plays the haptic effect based on the voltage value of the original excitation voltage signal.
In the embodiment, the original excitation voltage signal is corrected by presetting the anisotropic displacement protection curve, and meanwhile, the voltage value is limited in a safe voltage range by combining the safe threshold voltage value of the motor, so that the anisotropic vibration of the motor can be avoided, and the normal operation of the motor is effectively protected.
Referring to fig. 11, fig. 11 is a schematic block diagram of an embodiment of a motor protection device in a vibration system according to the present invention, where the motor protection device in this embodiment includes a processor 310 and a memory 320, the processor 310 is coupled to the memory 320, the memory 320 stores computer instructions, and the processor 310 executes the computer instructions during operation to implement the motor protection method in any of the foregoing embodiments.
The processor 310 may also be referred to as a CPU (central processing unit). The processor 310 may be an integrated circuit chip with signal processing capabilities. Processor 310 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor, but is not limited to such.
Referring to fig. 12, fig. 12 is a schematic block diagram of an embodiment of a computer readable storage medium provided in the present invention, where the computer readable storage medium stores a computer program 410, and the computer program 410 can be executed by a processor to implement the motor protection method in any of the above embodiments.
Alternatively, the readable storage medium may be a U-disk, a removable hard disk, a Read-only memory (ROM), a random access memory (RAM, randomAccessMemory), a magnetic disk or an optical disk, or a terminal device such as a computer, a server, a mobile phone, a tablet, or the like, which may store the program code.
Compared with the prior art, the motor protection method, the motor protection device and the storage medium in the vibration system are provided by the invention, the original excitation voltage signal is corrected by presetting the anisotropic displacement protection curve, and meanwhile, the voltage value is limited in a safe voltage range by combining the safe threshold voltage value of the motor, so that the anisotropic vibration of the motor can be avoided, and the normal operation of the motor is effectively protected.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (8)
1. A motor protection method in a vibration system, the motor protection method comprising:
acquiring a time-frequency curve of an original excitation voltage signal;
acquiring an anisotropic displacement protection curve, and combining the time-frequency curve to obtain a time domain curve of the original excitation voltage signal;
calculating the safety threshold voltage at each moment according to the time domain curve, thereby obtaining a safety threshold voltage curve;
respectively judging whether the voltage value of the original excitation voltage signal at each moment is larger than the voltage value at the moment corresponding to the safety threshold voltage curve;
if yes, correcting the voltage value of the original excitation voltage signal according to the voltage value of the moment corresponding to the safety threshold voltage curve; wherein, the liquid crystal display device comprises a liquid crystal display device,
the acquiring the anisotropic displacement protection curve comprises:
acquiring an anisotropic displacement frequency response curve of equipment under the maximum output voltage;
acquiring a displacement response value of each frequency in the anisotropic displacement frequency response curve;
calculating the displacement response value of each frequency and the threshold value of the anisotropic displacement respectively to obtain the anisotropic displacement protection curve;
calculating the displacement response value of each frequency and the threshold value of the anisotropic displacement to obtain the anisotropic displacement protection curve comprises the following steps:
respectively judging whether a displacement response value of each frequency in the anisotropic displacement frequency response curve is smaller than or equal to a threshold value of the anisotropic displacement;
if yes, the displacement protection value of the corresponding frequency in the opposite displacement protection curve is 1;
if not, the displacement protection value of the corresponding frequency in the anisotropic displacement protection curve is the ratio of the threshold value of the anisotropic displacement to the displacement response value of the corresponding frequency in the anisotropic displacement frequency response curve.
2. The method of claim 1, wherein the obtaining a time-frequency curve of the original excitation voltage signal comprises:
performing Fourier transformation on the original excitation voltage signal to obtain a time-frequency relationship of the original excitation voltage signal;
and marking the center frequency of each moment according to the time-frequency relation to acquire the time-frequency curve.
3. The motor protection method according to claim 1, wherein the obtaining the anisotropic displacement protection curve and combining the time-frequency curve to obtain the time-domain curve of the original excitation voltage signal includes:
respectively acquiring frequency information corresponding to each moment in the time-frequency curve;
and comparing the frequency information corresponding to each moment with the different displacement protection curve respectively to obtain a displacement protection value corresponding to each moment, thereby obtaining the time domain curve.
4. The motor protection method according to claim 1, wherein calculating the safety threshold voltage at each time according to the time domain curve to obtain the safety threshold voltage curve comprises:
obtaining the maximum output voltage of the equipment;
and calculating according to the time domain curve and the maximum output voltage of the equipment to obtain the safety threshold voltage curve.
5. The motor protection method according to claim 1, further comprising outputting the voltage value of the original excitation voltage signal if it is judged that the voltage value of the original excitation voltage signal is smaller than the voltage value at the time corresponding to the safety threshold voltage curve.
6. The motor protection method of claim 1, further comprising outputting the corrected voltage value of the original excitation voltage signal to a vibration system to cause a device to perform haptic effect playback based on the corrected voltage value of the original excitation voltage signal.
7. A motor protection device in a vibration system, characterized in that the motor protection device comprises a processor and a memory, the memory storing computer instructions, the processor being coupled to the memory, the processor executing the computer instructions in operation to implement the motor protection method according to any one of claims 1-6.
8. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program is executed by a processor to implement the motor protection method according to any one of claims 1 to 6.
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| CN202010589201.5A CN111669099B (en) | 2020-06-24 | 2020-06-24 | Method and apparatus for protecting motor in vibration system, and storage medium |
| PCT/CN2020/104651 WO2021258484A1 (en) | 2020-06-24 | 2020-07-24 | Motor protection method and device in vibration system, and storage medium |
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| CN202010589201.5A CN111669099B (en) | 2020-06-24 | 2020-06-24 | Method and apparatus for protecting motor in vibration system, and storage medium |
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| CN112491323B (en) * | 2020-11-27 | 2022-04-26 | 瑞声新能源发展(常州)有限公司科教城分公司 | Linear motor over-stroke control method and device, computer equipment and storage medium |
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| JPH09195949A (en) * | 1996-01-18 | 1997-07-29 | Sanyo Electric Co Ltd | Driving device for linear compressor |
| CN109361337A (en) * | 2018-12-13 | 2019-02-19 | 上海艾为电子技术股份有限公司 | The transmitting frequency calibration method and relevant apparatus of the driving voltage waveform of linear resonance device |
| CN111030547A (en) * | 2019-11-29 | 2020-04-17 | 瑞声科技(新加坡)有限公司 | Motor excitation signal processing method and device |
| CN111106783A (en) * | 2019-12-18 | 2020-05-05 | 瑞声科技(新加坡)有限公司 | Signal manufacturing method, signal manufacturing device, vibration motor and touch screen equipment |
| CN111259328A (en) * | 2020-01-16 | 2020-06-09 | 东南大学 | Method for detecting nonlinear characteristics of spacecraft structure driven by free vibration displacement response |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10233735B2 (en) * | 2016-07-16 | 2019-03-19 | Baker Hughes Incorporated | Systems and methods for operating a linear motor to prevent impacts with hard stops |
| CN109274309B (en) * | 2018-09-28 | 2020-07-24 | Oppo广东移动通信有限公司 | Motor control method, motor control device, electronic device and storage medium |
| CN110380664A (en) * | 2019-06-24 | 2019-10-25 | 瑞声科技(新加坡)有限公司 | A kind of motor vibrations control method, device and computer readable storage medium |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09195949A (en) * | 1996-01-18 | 1997-07-29 | Sanyo Electric Co Ltd | Driving device for linear compressor |
| CN109361337A (en) * | 2018-12-13 | 2019-02-19 | 上海艾为电子技术股份有限公司 | The transmitting frequency calibration method and relevant apparatus of the driving voltage waveform of linear resonance device |
| CN111030547A (en) * | 2019-11-29 | 2020-04-17 | 瑞声科技(新加坡)有限公司 | Motor excitation signal processing method and device |
| CN111106783A (en) * | 2019-12-18 | 2020-05-05 | 瑞声科技(新加坡)有限公司 | Signal manufacturing method, signal manufacturing device, vibration motor and touch screen equipment |
| CN111259328A (en) * | 2020-01-16 | 2020-06-09 | 东南大学 | Method for detecting nonlinear characteristics of spacecraft structure driven by free vibration displacement response |
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