CN111782049A - Motor application frequency bandwidth evaluation method and device, and storage medium - Google Patents
Motor application frequency bandwidth evaluation method and device, and storage medium Download PDFInfo
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Abstract
The invention provides an evaluation method and equipment of a motor application frequency bandwidth and a storage medium, wherein the evaluation method comprises the following steps: acquiring balanced excitation voltages of the motor under different frequencies; collecting vibration acceleration of a motor under excitation of balanced excitation voltage; calculating the vibration distortion (THD) of the motor under different frequencies and the intensity (HSL) of the vibration acceleration of the motor relative to the human body perception acceleration according to the vibration acceleration and the balanced excitation voltage; testing the minimum distortion value which can be perceived by a human body under different frequencies to obtain a distortion experience threshold value; evaluating an application frequency bandwidth of the motor according to the vibration distortion (THD), the intensity of the vibration acceleration of the motor relative to the human body perception acceleration (HSL) and a distortion experience threshold value. Through the embodiment, the comprehensive evaluation of the application frequency bandwidth of the motor can be realized.
Description
Technical Field
The present invention relates to the field of motor driving technology, and in particular, to a method and apparatus for estimating an application frequency bandwidth of a motor, and a storage medium.
Background
The traditional method for evaluating the frequency bandwidth of the motor is widely used for measuring the natural frequency F0 point and the vibration intensity at the F0 point of the motor through the frequency sweep of the rated voltage, and the actually applied signal is not only a single-frequency sine wave under the rated voltage, but also needs to consider the short effect of different frequencies of 9V output. Therefore, the frequency spectrum curve after the 9V voltage limit displacement equalization can reflect the bandwidth better. Meanwhile, in consideration of inherent distortion of the motor under different frequencies, frequency points with large distortion need to be avoided in practical application.
Disclosure of Invention
The invention mainly provides an evaluation method and equipment for motor application frequency bandwidth and a storage medium, which can realize comprehensive evaluation of the motor application frequency bandwidth.
In order to solve the technical problems, the invention adopts a technical scheme that: provided is an evaluation method of a motor application frequency bandwidth, the evaluation method comprising: acquiring balanced excitation voltages of the motor under different frequencies; collecting the vibration acceleration of the motor under the excitation of the balanced excitation voltage; calculating vibration distortion (THD) of the motor at different frequencies and intensity (HSL) of vibration acceleration of the motor relative to human perception acceleration according to the vibration acceleration and the balanced excitation voltage; testing the minimum distortion value which can be perceived by a human body under different frequencies to obtain a distortion experience threshold value; evaluating an application frequency bandwidth of the motor as a function of the vibration distortion (THD), a strength of vibration acceleration of the motor relative to human perceptual acceleration (HSL), and the distortion experience threshold.
Wherein said evaluating an application frequency bandwidth of the motor as a function of the vibration distortion (THD), the intensity of vibration acceleration of the motor relative to human perceptual acceleration (HSL), and the distortion experience threshold comprises: obtaining a corresponding first frequency at which the vibration distortion (THD) is equal to the distortion experience threshold; acquiring the minimum frequency and the maximum frequency corresponding to the vibration acceleration of the motor relative to the strength (HSL) of human body perception acceleration; and judging that the application frequency bandwidth of the motor is the difference between the maximum frequency and the first frequency when the minimum frequency is less than or equal to the first frequency, and the application frequency bandwidth of the motor is the difference between the maximum frequency and the minimum frequency when the minimum frequency is greater than the first frequency.
Wherein the calculating of the vibration distortion (THD) of the motor from the vibration acceleration and the equilibrium excitation voltage is specifically according to the following formula:
wherein n represents the harmonic order, P represents the harmonic energy, f represents the frequency,
represents the sum of harmonic energies of orders 2 to 5 at the frequency point,
representing the sum of the fundamental to 5 th harmonic energies.
Wherein, the intensity (HSL) of the vibration acceleration of the motor relative to the human perception acceleration is obtained by the difference between the logarithm of the vibration acceleration and the equivalent vibration perception acceleration weighting curve, and the calculation formula is as follows:
HSL＝20*log10(ACC)-20*log10((0.01*fm.^5-0.071*fm.^4+0.19*fm.^3-0.16*fm.^2+0.044*fm+0.26)；
wherein ACC is the vibration acceleration, and log10(ACC) is the logarithm of the vibration acceleration;
20 log10((0.01 f m 5-0.071 f m 4+0.19 f m 3-0.16 f m 2+0.044 f m +0.26) is the iso-vibration induced acceleration weighting curve, and fm is the frequency of the motor.
The method for acquiring the equi-vibration induced acceleration weighting curve comprises the following steps: inverting the minimum human perception sensitivity curve to obtain an equal vibration sense displacement weighting curve; and obtaining the equal vibration sense acceleration weighting curve according to the equal vibration sense displacement weighting curve.
Wherein the acquiring of the vibration acceleration of the motor under excitation of the equilibrium excitation voltage comprises: energizing the motor with the equalized excitation voltage; and respectively collecting and storing the vibration acceleration of the motor at different frequencies.
Wherein the obtaining of the equalized excitation voltages of the motor at different frequencies comprises: setting relevant parameters of the equalizer according to the maximum displacement of preset frequency vibration under rated voltage; and calculating the balanced excitation voltage of the motor under different frequencies according to the related parameters of the equalizer.
In order to solve the technical problem, the invention adopts another technical scheme that: there is provided an apparatus for evaluating a frequency bandwidth applied to a motor, the apparatus comprising a processor and a memory, the memory storing computer instructions, the processor being coupled to the memory, the processor executing the computer instructions when in operation to implement the above-mentioned evaluation method.
In order to solve the technical problem, 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 the evaluation method as described above.
The invention has the beneficial effects that: the method and the device for evaluating the application frequency bandwidth of the motor and the storage medium are different from the prior art, and by combining the vibration distortion of the motor at different frequencies after equalization, the distortion experience threshold and the strength of the vibration acceleration of the motor relative to the human body perception acceleration, the strength in touch experience is considered, the vibration distortion is also considered, and the comprehensive evaluation of the application frequency bandwidth of the motor can be realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic flow chart illustrating an embodiment of a method for estimating an applied frequency bandwidth of a motor according to the present invention;
FIG. 2 is a schematic flow chart illustrating an embodiment of step S100 in FIG. 1 according to the present invention;
FIG. 3 is a flowchart illustrating an embodiment of step S200 of FIG. 1 according to the present invention;
FIG. 4 is a schematic flow chart illustrating an embodiment of step S300 in FIG. 1 according to the present invention;
FIG. 5 is a flowchart illustrating an embodiment of a method for obtaining an equi-vibration induced acceleration weighting curve according to the present invention;
FIG. 6 is a diagram illustrating an embodiment of a minimum perceptual sensitivity curve of a human in an embodiment of the present invention;
FIG. 7 is a diagram illustrating an embodiment of an iso-vibration induced displacement weighting curve according to the present invention;
FIG. 8 is a schematic diagram of an embodiment of an iso-vibration induced acceleration weighting curve of the present invention;
FIG. 9 is a flowchart illustrating an embodiment of step S500 in FIG. 1 according to the present invention;
FIG. 10 is a schematic diagram of an embodiment of the present invention motor employing frequency bandwidth division;
FIG. 11 is a schematic block diagram of an embodiment of an apparatus for evaluating a frequency bandwidth for a motor application 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 technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of an embodiment of a method for evaluating an applied frequency bandwidth of a motor according to the present invention, wherein the method for evaluating an applied frequency bandwidth of a motor in the embodiment may specifically include:
and S100, acquiring the balanced excitation voltage of the motor under different frequencies.
Referring to fig. 2, fig. 2 is a schematic flow chart of an embodiment of step S100 of the present invention, and step S100 of fig. 2 further includes the following sub-steps:
and S110, setting relevant parameters of the equalizer according to the maximum displacement of the preset frequency vibration under the rated voltage.
Specifically, the equalizing excitation voltage signal in the embodiment of the present invention is a step signal, and the maximum displacement of the preset frequency vibration (the natural frequency F0 point of the motor in the present invention) at the rated voltage is required to set the relevant parameters of the equalizer. The relevant parameters of the equalizer may include insertion loss, equalization value, equalization deviation, reflection loss, current-carrying capacity, and the like.
And S120, calculating the balanced excitation voltage of the motor under different frequencies according to the related parameters of the equalizer.
Further, according to the related parameters of the equalizer, the equalized excitation voltage signals of the motor under different frequencies are calculated. Optionally, the maximum output value of the equalizing excitation voltage of the motor in the embodiment of the present invention is 9V.
And S200, collecting the vibration acceleration of the motor under the excitation of the balanced excitation voltage.
Referring to fig. 3, fig. 3 is a schematic flow chart of an embodiment of step S200 of the present invention, and step S200 of fig. 3 further includes the following sub-steps:
and S210, exciting the motor by using the balanced excitation voltage.
Alternatively, the motor is excited by the equalized excitation voltage at the different frequency acquired in step S100.
And S220, respectively collecting and storing the vibration acceleration of the motors at different frequencies.
And respectively acquiring vibration acceleration data of the motors at different frequencies by adopting an acceleration sensor and storing the vibration acceleration data.
And S300, calculating the vibration distortion (THD) of the motor under different frequencies and the intensity (HSL) of the vibration acceleration of the motor relative to the human body perception acceleration according to the vibration acceleration and the balanced excitation voltage.
Optionally, the vibration distortion (THD) represents a non-linear output of the motor, i.e. the ratio of the harmonic component of each frequency point to its fundamental. Specifically, the vibration distortion at different frequencies can be obtained by calculating according to the collected equilibrium excitation voltage and the vibration acceleration value acquired in step S200. Alternatively, the frequency range in embodiments of the invention may be 30Hz-500 Hz. That is, the vibration distortion of the motor in the frequency range of 30Hz-500Hz can be calculated according to the equilibrium excitation voltage and the vibration acceleration value of the motor at different frequencies. Wherein, the calculation formula of the vibration distortion of the motor is as follows:
alternatively, THD represents a square root sum of a ratio of an effective value of the harmonic component to an effective value of the fundamental component at each frequency point, where n represents a harmonic order, P represents harmonic energy, f represents frequency,
represents the sum of harmonic energies of orders 2 to 5 at the frequency point,
representing the sum of the fundamental to 5 th harmonic energies.
Referring to fig. 4, fig. 4 is a flowchart illustrating an embodiment of step S300 according to the present invention, and the method for obtaining the vibration acceleration of the motor relative to the intensity of human body perceived acceleration (HSL) is described in detail in the embodiment of fig. 4, specifically, step S300 further includes the following sub-steps:
and S310, calculating to obtain the steady acceleration value of each frequency point after the motor is balanced according to the vibration acceleration.
Optionally, the specific calculation manner of the intensity (HSL) of the vibration acceleration of the motor relative to the human body perception acceleration of the present invention is to calculate the steady-state acceleration value of each frequency point after the motor is equalized according to the collected vibration acceleration data.
And S320, weighting the steady-state acceleration value and the minimum human perception sensitive acceleration to obtain the intensity of the vibration acceleration of the motor relative to the human perception acceleration.
Further, the steady-state acceleration value and the minimum human perception sensitive acceleration are weighted to obtain the intensity of the vibration acceleration of the motor relative to the human perception acceleration. The intensity of the vibration acceleration of the motor relative to the human body perception acceleration is obtained by the difference between the logarithm of the dynamic acceleration and the equivalent vibration sensing acceleration weighting curve, and the calculation formula is as follows:
HSL＝20*log10(ACC)-20*log10((0.01*fm.^5-0.071*fm.^4+0.19*fm.^3-0.16*fm.^2+0.044*fm+0.26)；
wherein ACC is the vibration acceleration, and log10(ACC) is the logarithm of the vibration acceleration; 20 log10((0.01 f m 5-0.071 f m 4+0.19 f m 3-0.16 f m 2+0.044 f m +0.26) is the iso-vibration induced acceleration weighting curve, and fm is the frequency of the motor.
Referring to fig. 5, fig. 5 is a schematic flow chart of an embodiment of the method for obtaining an equi-vibration-induced acceleration weighting curve according to the present invention, and for example, the method for obtaining an equi-vibration-induced acceleration weighting curve of fig. 5 includes the following steps:
s321, inverting the minimum human perception sensitivity curve to obtain an equal vibration sense displacement weighting curve.
Referring to fig. 6, fig. 6 is a schematic diagram of an embodiment of a minimum human perceptual sensitivity curve in an embodiment of the present invention, wherein an abscissa in fig. 6 represents frequency information, and an ordinate represents a perceptual Threshold, i.e., a relative 1um perceptual Threshold (Threshold ref 1um), which is expressed in dB. As shown in fig. 6, the frequency is 80Hz and the relative displacement is 1um, and the frequency points with the frequency of 80Hz or less require larger displacement to obtain the same hand feeling, and the frequency points with the frequency of 80Hz or more require smaller displacement to obtain the same hand feeling. In this way, the equal vibration sense displacement weighting curve can be obtained by inverting the human body minimum perception sensitivity curve in fig. 6. Referring to fig. 7, fig. 7 is a schematic diagram of an embodiment of an equal-vibration-sense displacement weighting curve according to the present invention. In fig. 7, the abscissa represents frequency information and the ordinate represents a displacement weight value in dB.
And S322, obtaining an equal vibration sense acceleration weighting curve according to the equal vibration sense displacement weighting curve.
It can be understood that the acceleration and displacement of the single frequency signal satisfy:
where x represents displacement, acc is acceleration, and w represents a single frequency. In this way, the iso-vibration induced acceleration weighting curve can be obtained through the relation between the acceleration and the displacement of the single-frequency signal. Referring to fig. 8, fig. 8 is a schematic diagram of an exemplary iso-vibration induced acceleration weighting curve according to an embodiment of the present invention. Wherein, the abscissa in fig. 8 represents frequency information and the ordinate represents the acceleration sensing threshold, i.e. relative to 1m/s2Acceleration sensing Threshold (Threshold ref 1 m/s)2) The unit is dB.
S400, testing the minimum distortion value which can be perceived by the human body under different frequencies to obtain a distortion experience threshold value.
Optionally, in the embodiment of the present invention, the distortion experience threshold refers to a minimum distortion value at which the human body can perceive and distinguish an effect, and the vibration frequencies are different, and the human body can perceive and distinguish different distortion thresholds. In the actual test of the invention, the obtaining of the distortion experience threshold specifically performs controllable distortion processing on the single-frequency signals with different frequencies, continuously increases the distortion degree of the effect until the distortion can be perceived, and obtains the distortion value when the distortion is perceived, namely the distortion experience threshold.
And S500, evaluating the application frequency bandwidth of the motor according to the vibration distortion (THD), the strength (HSL) of the vibration acceleration of the motor relative to the human body perception acceleration and a distortion experience threshold.
Referring to fig. 9, fig. 9 is a flowchart illustrating an embodiment of step S500 of the present invention, and step S500 of fig. 9 further includes the following sub-steps:
s510, a first frequency corresponding to the vibration distortion (THD) equal to the distortion experience threshold value is obtained.
Referring to fig. 10, fig. 10 is a schematic diagram of the motor applied with frequency bandwidth evaluation according to an embodiment of the present invention, such as curve 1 in fig. 10 is the vibration distortion (THD) of the motor at different frequencies, curve 2 is the distortion threshold curve within 110Hz, and curve 3 is the intensity (HSL) of the vibration acceleration of the motor relative to the human body sensing acceleration. First, a first frequency corresponding to a vibration distortion (THD) of the motor equal to the distortion experience threshold is obtained, that is, a frequency corresponding to an intersection point of a curve 1 and a curve 2 in fig. 10 is the first frequency, and in the embodiment of the present invention, the first frequency is 100Hz, that is, a frequency point 100Hz later than the first frequency meets the experience distortion requirement.
S520, acquiring the minimum frequency and the maximum frequency corresponding to the vibration acceleration of the motor relative to the strength (HSL) of the human body perception acceleration.
Further referring to fig. 10, the minimum frequency and the maximum frequency corresponding to the vibration acceleration of the motor with respect to the intensity (HSL) of the human body perceived acceleration are obtained. For example, in the first embodiment of the present invention, the frequencies corresponding to the vibration acceleration of the motor with respect to the intensity (HSL) of the human body perception acceleration of 15dB are obtained as the minimum frequency and the maximum frequency, respectively, as shown in fig. 10, the minimum frequency is 60Hz, and the maximum frequency is 460 Hz.
In another embodiment of the present invention, the frequencies corresponding to the vibration acceleration of the motor when the intensity (HSL) of the human body perception acceleration is 30dB may be obtained as the minimum frequency and the maximum frequency, respectively. Of course, the above embodiments of the present invention are only schematically illustrated, and in other embodiments, frequencies corresponding to vibration acceleration of the motor when the intensity (HSL) of the vibration acceleration relative to the human body perceived acceleration is other values may be selected as the minimum frequency and the maximum frequency, which is not specifically limited herein.
S530, judging that the application frequency bandwidth of the motor is the difference between the maximum frequency and the first frequency when the minimum frequency is less than or equal to the first frequency, and the application frequency bandwidth of the motor is the difference between the maximum frequency and the minimum frequency when the minimum frequency is greater than the first frequency.
Alternatively, it is determined that when the minimum frequency is less than or equal to the first frequency, the applied frequency bandwidth of the motor is a difference between the maximum frequency and the first frequency, for example, when the vibration acceleration of the motor is 15dB with respect to the intensity of human body perceived acceleration (HSL), the minimum frequency is 60Hz, the maximum frequency is 460Hz, and the minimum frequency is 60Hz which is less than the first frequency 100Hz, the applied frequency bandwidth of the motor is a difference between the maximum frequency and the first frequency, that is, the applied frequency bandwidth of 15dB is 360 Hz. It will be appreciated that, the 15dB application frequency bandwidth may be defined as the lowest application bandwidth,
when the minimum frequency is greater than the first frequency, the application frequency bandwidth of the motor is determined to be the difference between the maximum frequency and the minimum frequency, for example, when the vibration acceleration of the motor is 30dB relative to the intensity of human body perception acceleration (HSL), the minimum frequency is 123Hz, the maximum frequency is 300Hz, the minimum frequency is 174Hz greater than the first frequency by 100Hz, and the application frequency bandwidth of the motor is the difference between the maximum frequency and the minimum frequency, that is, the application frequency bandwidth of 30dB is 177 Hz. It is understood that an application frequency bandwidth of 30dB may be defined as a general application bandwidth.
It will be appreciated that not only intensity but also haptic reality is required in the haptic experience, for example if a vibration of 100Hz is required, but a distortion of 200Hz or even 300Hz is required, so that even if the intensity is met, the desired effect is not expected. The evaluation method of the application frequency bandwidth of the motor in the embodiment of the invention combines the vibration distortion of the motor under different frequencies after equalization, the strength of the vibration acceleration of the motor relative to the human body perception acceleration and the distortion experience threshold value, and can comprehensively evaluate the application bandwidth of the motor.
In the above embodiment, by combining the vibration distortion of the motor at different frequencies after equalization, the distortion experience threshold, and the intensity of the vibration acceleration of the motor relative to the human body perception acceleration, the intensity in the tactile experience is considered, and the vibration distortion is also considered, so that the comprehensive evaluation of the application frequency bandwidth of the motor can be realized.
Referring to fig. 11, fig. 11 is a schematic block diagram of an embodiment of an evaluation apparatus for a motor application frequency bandwidth provided in the present invention, the evaluation apparatus 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 when operating to implement the method for evaluating the motor application frequency bandwidth in any of the embodiments described above.
The processor 310 may also be referred to as a Central Processing Unit (CPU). The processor 310 may be an integrated circuit chip having signal processing capabilities. The 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 thereto.
Referring to fig. 12, fig. 12 is a schematic block diagram of an embodiment of a computer-readable storage medium provided by the present invention, in which a computer program 410 is stored, and the computer program 410 can be executed by a processor to implement the method for estimating the frequency bandwidth of a motor application in any of the above embodiments.
Alternatively, the readable storage medium may be various media that can store program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, or may be a terminal device such as a computer, a server, a mobile phone, or a tablet.
Different from the prior art, embodiments of the present invention provide a method and an apparatus for evaluating a motor application frequency bandwidth, and a storage medium, where vibration distortion of a motor at different frequencies after equalization, a distortion experience threshold, and a strength of a vibration acceleration of the motor relative to a human body perceived acceleration are combined, so that not only the strength in haptic experience but also the vibration distortion are considered, and a comprehensive evaluation of the motor application frequency bandwidth can be achieved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. An evaluation method for a motor application frequency bandwidth, the evaluation method comprising:
acquiring balanced excitation voltages of the motor under different frequencies;
collecting the vibration acceleration of the motor under the excitation of the balanced excitation voltage;
calculating vibration distortion (THD) of the motor at different frequencies and intensity (HSL) of vibration acceleration of the motor relative to human perception acceleration according to the vibration acceleration and the balanced excitation voltage;
testing the minimum distortion value which can be perceived by a human body under different frequencies to obtain a distortion experience threshold value;
evaluating an application frequency bandwidth of the motor as a function of the vibration distortion (THD), a strength of vibration acceleration of the motor relative to human perceptual acceleration (HSL), and the distortion experience threshold.
2. The evaluation method according to claim 1, wherein said evaluating an application frequency bandwidth of the motor as a function of the vibration distortion (THD), a strength of vibration acceleration of the motor relative to human perceptual acceleration (HSL), and the distortion experience threshold comprises:
obtaining a corresponding first frequency at which the vibration distortion (THD) is equal to the distortion experience threshold;
acquiring the minimum frequency and the maximum frequency corresponding to the vibration acceleration of the motor relative to the strength (HSL) of human body perception acceleration;
and judging that the application frequency bandwidth of the motor is the difference between the maximum frequency and the first frequency when the minimum frequency is less than or equal to the first frequency, and the application frequency bandwidth of the motor is the difference between the maximum frequency and the minimum frequency when the minimum frequency is greater than the first frequency.
3. The evaluation method according to claim 1, wherein the calculation of the vibration distortion (THD) of the motor from the vibration acceleration and the equalized excitation voltage is in particular according to the following formula:
wherein n represents the harmonic order, P represents the harmonic energy, f represents the frequency,
represents the sum of harmonic energies of orders 2 to 5 at the frequency point,
representing the sum of the fundamental to 5 th harmonic energies.
4. The evaluation method according to claim 1, wherein the intensity (HSL) of the vibration acceleration of the motor relative to the human perceptual acceleration is obtained from a difference between a logarithm of the vibration acceleration and an equi-vibration-induced acceleration weighting curve, and is calculated by:
HSL＝20*log10(ACC)-20*log10((0.01*fm.^5-0.071*fm.^4+0.19*fm.^3-0.16*fm.^2+0.044*fm+0.26)；
wherein ACC is the vibration acceleration, log10(ACC) is the logarithm of the vibration acceleration;
20 log10((0.01 f m 5-0.071 f m 4+0.19 f m 3-0.16 f m 2+0.044 f m +0.26) is the iso-vibration induced acceleration weighting curve, and fm is the frequency of the motor.
5. The evaluation method according to claim 4, wherein the method for obtaining the iso-vibration induced acceleration weighting curve comprises:
inverting the minimum human perception sensitivity curve to obtain an equal vibration sense displacement weighting curve;
and obtaining the equal vibration sense acceleration weighting curve according to the equal vibration sense displacement weighting curve.
6. The evaluation method of claim 1, wherein the collecting of the vibration acceleration of the motor under excitation of the equalized excitation voltage comprises:
energizing the motor with the equalized excitation voltage;
and respectively collecting and storing the vibration acceleration of the motor at different frequencies.
7. The evaluation method of claim 1, wherein the obtaining of the equalized excitation voltages of the motor at different frequencies comprises:
setting relevant parameters of the equalizer according to the maximum displacement of preset frequency vibration under rated voltage;
and calculating the balanced excitation voltage of the motor under different frequencies according to the related parameters of the equalizer.
8. An apparatus for evaluating a frequency bandwidth applied to a motor, the apparatus comprising a processor and a memory, the memory storing computer instructions, the processor being coupled to the memory and the processor executing the computer instructions when in operation to implement the evaluation method according to any one of claims 1 to 7.
9. A computer-readable storage medium, on which a computer program is stored, the computer program being executable by a processor for implementing the evaluation method according to any one of claims 1 to 7.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180470A (en) * | 1995-03-31 | 1998-04-29 | 安东尼·胡利 | Improvement in or relating to loudspeakers |
| EP1026818A1 (en) * | 1997-10-24 | 2000-08-09 | Kabushiki Kaisha Yaskawa Denki | Motor speed controller and gain setting method of the controller |
| US20120153935A1 (en) * | 2010-10-28 | 2012-06-21 | Schneider Electric USA, Inc. | Systems, Methods, and Devices for Demodulating Induction Motor Instantaneous Rotor Slot Harmonic Frequency |
| CN109212413A (en) * | 2018-08-14 | 2019-01-15 | 瑞声科技(新加坡)有限公司 | Linear motor Bandwidth Measurement Method |
| CN109313233A (en) * | 2016-06-21 | 2019-02-05 | 三菱电机株式会社 | Load abnormal detection device |
| CN110031229A (en) * | 2018-12-30 | 2019-07-19 | 瑞声科技(新加坡)有限公司 | A kind of measurement method and device of motor bandwidth |
| CN110907827A (en) * | 2019-11-22 | 2020-03-24 | 瑞声科技(新加坡)有限公司 | Motor transient distortion measuring method and system |
-
2020
- 2020-07-02 CN CN202010628207.9A patent/CN111782049B/en active Active
- 2020-07-24 WO PCT/CN2020/104650 patent/WO2022000651A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180470A (en) * | 1995-03-31 | 1998-04-29 | 安东尼·胡利 | Improvement in or relating to loudspeakers |
| EP1026818A1 (en) * | 1997-10-24 | 2000-08-09 | Kabushiki Kaisha Yaskawa Denki | Motor speed controller and gain setting method of the controller |
| US20120153935A1 (en) * | 2010-10-28 | 2012-06-21 | Schneider Electric USA, Inc. | Systems, Methods, and Devices for Demodulating Induction Motor Instantaneous Rotor Slot Harmonic Frequency |
| CN109313233A (en) * | 2016-06-21 | 2019-02-05 | 三菱电机株式会社 | Load abnormal detection device |
| CN109212413A (en) * | 2018-08-14 | 2019-01-15 | 瑞声科技(新加坡)有限公司 | Linear motor Bandwidth Measurement Method |
| CN110031229A (en) * | 2018-12-30 | 2019-07-19 | 瑞声科技(新加坡)有限公司 | A kind of measurement method and device of motor bandwidth |
| CN110907827A (en) * | 2019-11-22 | 2020-03-24 | 瑞声科技(新加坡)有限公司 | Motor transient distortion measuring method and system |
Non-Patent Citations (1)
| Title |
|---|
| 陈浩;刘向东;赵静;: ""高带宽低速大转矩永磁同步电动机的优化设计"", 《电工技术学报》 * |
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