WO2021128051A1

WO2021128051A1 - Motor polarity determining method and apparatus, storage medium, and device

Info

Publication number: WO2021128051A1
Application number: PCT/CN2019/128205
Authority: WO
Inventors: 向征; 郭璇; 谢兵
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2021-07-01

Abstract

A motor polarity determining method, comprising: connecting a motor according to a first connection method, and inputting a first excitation signal to drive the motor to vibrate (201); collecting a first vibration signal of the motor under the first connection method and acquiring a first acceleration of the first vibration signal corresponding to a brake section (202); connecting the motor according to a second connection method with a motor polarity opposite to that under the first connection method, and inputting a first excitation signal to drive the motor to vibrate (203); collecting a second vibration signal of the motor under the second connection method and acquiring a second acceleration of the second vibration signal corresponding to the brake section (204); comparing the first acceleration of the first vibration signal corresponding to the brake section with the second acceleration of the second vibration signal corresponding to the brake section, and determining the polarity of the motor on the basis of the comparison result. The present method can make the motor vibration amount tailing oscillation meet the expected requirements to achieve the expected effect. Also provided are a motor polarity determining apparatus, a storage medium, and a device.

Description

Method, device, storage medium and equipment for determining motor polarity

Technical field

The present invention relates to the technical field of electronic equipment, and in particular to a method, device, storage medium and equipment for determining the polarity of a motor.

Background technique

Portable devices such as smart phones and tablet computers with existing technologies have increasingly become an indispensable part of people's lives. Moreover, with the progress of society, people have higher and higher requirements for the intelligence and diversification of electronic products, and a richer human body perception and human-computer interaction experience are needed. Tactile sensation is an important part of human perception, so haptic feedback technology plays an increasingly important role. Among them, the Linear Resonance Actuator (LRA) (commonly known as the motor) plays an important role in the haptic feedback system. For motor control, simple linear system control is relatively easy, and it can be carried out in the form of a similar transfer function; however, due to the influence of the magnetic circuit, structure, and technology, the exciter will more or less show a certain The nonlinearity of the effect signal requires special design based on the nonlinearity of the parameter curve. Generally speaking, the nonlinear characteristics of motor parameters are defined as a curve based on displacement; if the axis of symmetry is zero displacement, the curve is likely to be an asymmetrical form. This makes the motor have a certain difference in performance under different connection methods. When the direction of the connection method does not match the direction of the motor polarity, the vibration of the motor will not reach the expected effect.

Therefore, it is necessary to provide a method for determining the motor polarity.

technical problem

The purpose of the present invention is to provide a method, device, storage medium and equipment for determining the motor polarity to solve the technical problem that the motor vibration cannot reach the expected effect when the motor access direction does not match the expected direction in the prior art .

Technical solutions

The technical scheme of the present invention is as follows:

One aspect of the present invention provides a method for determining the polarity of a motor. The method includes:

Connect the motor according to the first connection method, and input a first excitation signal to drive the motor to vibrate, the first excitation signal including an acceleration section for driving the motor to vibrate, and a constant section for realizing the vibration effect of the motor Signal and the brake section used to reduce the vibration of the motor in a low-frequency manner;

Collecting the first vibration signal of the motor in the first connection method and acquiring the first acceleration corresponding to the first vibration signal and the brake segment;

Connect the motor according to a second connection method that is opposite to the polarity of the motor under the first connection method, and input the first excitation signal to drive the motor to vibrate;

Collecting a second vibration signal of the motor in the second connection method and acquiring the second vibration signal and the second acceleration corresponding to the brake segment;

The first acceleration of the brake segment is compared with the second vibration signal corresponding to the second acceleration of the brake segment, and the polarity of the motor is determined according to the comparison result.

Further, the determining the polarity of the motor according to the comparison result includes:

When the first acceleration is less than the second acceleration, determining that the polarity of the motor corresponds to the first access method;

When the first acceleration is greater than the second acceleration, it is determined that the polarity of the motor corresponds to the second access method.

Further, the excitation signal is an aperiodic signal with a duration of less than 50 ms.

Further, the first acceleration and the second acceleration are both measured and extracted by an accelerometer.

Further, the first acceleration and the second acceleration are both measured and extracted by an infrared light displacement measuring device.

Further, the method further includes:

When the motor is connected according to the first access method, the acquisition card performs digital-to-analog conversion of the first excitation signal and transmits it to the motor to drive the motor to vibrate;

Receiving the first acceleration collected by the collection card, where the first acceleration is collected by the accelerometer and sent to the collection card;

When the motor is connected according to the second connection method, a first excitation signal is sent to the acquisition card, and the acquisition card performs digital-to-analog conversion of the first excitation signal and sends it to the motor to drive the motor to vibrate ；

Receiving the second acceleration collected by the collection card, where the second acceleration is collected by the accelerometer and sent to the collection card.

A second aspect of the present invention provides a motor polarity determination device, the device includes:

An acceleration acquisition module for acquiring the first acceleration of the excitation signal brake segment when the motor is connected according to the first connection method and the second acceleration of the excitation signal brake segment when the motor is connected according to the second connection method; The first access method and the second access method are the opposite access methods when the motor is connected to the electronic device;

A comparison module, configured to compare the first acceleration and the second acceleration to obtain a comparison result;

The motor polarity determination module is used to determine the motor polarity according to the comparison result.

A third aspect of the present invention provides a readable storage medium on which a computer program is stored, characterized in that, when the computer program is executed by a processor, each step in the motor polarity determination method described in the first aspect is implemented .

A fourth aspect of the present invention provides a motor polarity determination device, the device includes:

A capture card, a processor and an accelerometer that are electrically connected to the capture card, a tool that is electrically connected to the accelerometer, and the tool is used to place a motor whose access method is to be determined;

The processor is used to implement the steps in the method for determining the motor polarity described in the first aspect.

Further, the device further includes:

A first amplifier, the first amplifier is electrically connected to the acquisition card and the motor, and the first amplifier is used to amplify the excitation signal sent by the acquisition card and transmit it to the motor to excite the motor to vibrate;

The second amplifier is electrically connected to the accelerometer and the acquisition card, and the second amplifier is used to amplify the acceleration signal collected by the accelerometer and transmit it to the acquisition card.

Further, the device further includes:

The buffering member is placed at the bottom of the tooling, and the buffering member is used to avoid the influence of the external environment on the acceleration measurement result of the tooling.

Beneficial effect

The beneficial effects of the present invention are: connect the motor according to the first connection method, input the first excitation signal to drive the motor to vibrate, collect the first vibration signal of the motor under the first connection method, and obtain the first vibration signal and the brake section Corresponding to the first acceleration, connect the motor according to the second connection method that is opposite to the polarity of the motor under the first connection method, input the first excitation signal to drive the motor to vibrate, and collect the second connection method of the motor under the second connection method. Acquire the second vibration signal and the second acceleration corresponding to the brake segment, compare the first acceleration of the first vibration signal and the second vibration signal corresponding to the second acceleration of the brake segment, and determine the polarity of the motor according to the comparison result . In this connection method, the motor vibration tailing oscillation meets the expected requirements, the motor vibration tailing is small, and the expected effect can be achieved.

Description of the drawings

Figure 1 is a schematic diagram of the amount of vibration when the motor is connected in two opposite directions;

2 is a schematic flow chart of the method for determining the motor polarity provided by the present invention;

3 is a schematic diagram of a module of the motor polarity determination device provided by the present invention;

Fig. 4 is a schematic structural diagram of a motor polarity determination device provided by the present invention.

Embodiments of the present invention

The present invention will be further described below in conjunction with the drawings and embodiments.

Motor is an important realization element in the tactile feedback system, and the research on its motion characteristics is getting more and more in-depth. The differential equation of the motor motion model can be expressed as:

Bl(x)i=m _t a+R _m (x)v+k _t (x)x

Wherein, u _e represents the driving voltage of the motor, R _e represents the DC resistance of the motor, i denotes a current in the voice coil motor, Bl (x) denotes an electromagnetic force coefficient of the motor, v represents the speed of the sub-Mada Zhen, L _e denotes the motor coil inductance .

m _t denotes the mass of the motor vibrator, a denotes the acceleration of the motor vibrator, R _m (x) denotes the resistance coefficient of the damper, k _t (x) denotes the spring stiffness coefficient, and x denotes the displacement of the motor vibrator.

For a linear motor motion model, Bl (x), k _t (x) and R _m (x) in the formula are all constants. For a nonlinear model, the above three parameters are all represented as displacement curves. Ideally, the nonlinearity of the above parameters will show strong symmetry, but in actual production, due to tolerances in the assembly process and production process, the nonlinear curve may have a certain asymmetry. As a result, when the motor uses different connection directions to connect to the electronic device, there will be a certain difference in motion characteristics. As shown in Figure 1, it is a schematic diagram of the amount of vibration when the motor is connected in two opposite directions. It can be seen from Figure 1 that the motor is connected in different directions, and the amount of vibration in the short-signal acceleration section is not much different, but the impact of the braking section is more obvious. In the figure, the 500～1000ms section is the short signal acceleration section, and after 1000ms is the short signal braking section. It is understandable that there are only two opposite access methods for the motor access method. The difference between the two access methods is only that the two ends are opposite when they are connected to the electronic device. One access method is defined as the first one. Access method, the second access method is the access method opposite to the first access method. From the comparison chart in Figure 1, it can be seen that the second access method has less vibration in the short-signal braking section and less tail vibration compared to the first access method. The motor vibration effect of the second connection method is in line with expectations, and it can have a "crispy" experience effect in actual use.

In order for the motor to achieve the desired effect, it is necessary to determine the connection method of the motor before connection. The first aspect of the present invention provides a method for determining the polarity of a motor. As shown in FIG. 1, it is a schematic flow chart of the method for determining the polarity of a motor provided in this application. The method includes:

Step 201: Connect the motor according to the first access method, and input a first excitation signal to drive the motor to vibrate. The first excitation signal includes an acceleration section for driving the motor to vibrate, a constant section signal for realizing the vibration effect of the motor, and Low frequency method to reduce the brake section of the motor vibration;

Step 202: Collect the first vibration signal of the motor in the first connection method and obtain the first vibration signal and the first acceleration corresponding to the brake segment;

Step 203: Connect the motor according to a second connection method that is opposite to the polarity of the motor in the first connection method, and input a first excitation signal to drive the motor to vibrate;

Step 204: Collect the second vibration signal of the motor in the second connection method and obtain the second vibration signal and the second acceleration corresponding to the brake segment;

Step 205: Compare the first acceleration of the brake segment of the first vibration signal with the second acceleration of the second vibration signal corresponding to the second acceleration of the brake segment, and determine the polarity of the motor according to the comparison result.

In the embodiment of this application, it can be understood that there are two opposite methods for connecting the motor, that is, the above-mentioned first and second connecting methods are the opposite of the two connecting methods when the motor is connected to the electronic device. .

When the motor is connected according to the first connection method, an excitation signal is applied to the motor, and the motor vibrates according to the instruction of the excitation signal under the excitation signal. The vibration acceleration of the motor's response to the braking section signal of the excitation signal is measured to obtain the first One acceleration. The connection method of replacing the motor is the second connection method. The same excitation signal as the above excitation signal is applied to the motor, and the motor vibrates under the excitation of the same excitation signal, which responds to the brake section signal of the excitation signal of the motor. The vibration acceleration is measured to obtain the second acceleration. It is understandable that the first acceleration and the second acceleration here are not a single value, but a continuous value of the vibration acceleration of the motor during the braking period of the excitation signal. Obtain the first acceleration and the second acceleration obtained by the above measurement.

For the excitation signal used to excite the motor to vibrate, it can be a short signal that satisfies the following conditions: it has a sufficiently large displacement level, that is, the excitation signal excites the displacement of the motor to a sufficiently large level. In this application, it can be the motor The displacement is excited to the steady-state displacement level of the rated voltage of the motor. And a fast enough braking time, that is, the excitation signal needs to be equipped with a braking section, so that the motor vibrator can return to the zero displacement level in a short time.

Comparing the collected first acceleration and the second acceleration can be to compare the absolute value of the acceleration corresponding to each position of the excitation signal brake segment of the first acceleration and the second acceleration, and obtain the comparison result.

Since the vibration of the motor in the signal brake section is smaller, the vibration effect of the motor in actual use is better, and the user experience is better. Therefore, the connection method of the motor is determined according to the comparison result of the first acceleration and the second acceleration. That is, in the first access method and the second access method, the access method of the braking zone acceleration of the excitation signal is small for access. In the embodiment of the present application, the polarity of the motor is the connection method of the motor, and the motor has two opposite polarities: the first polarity and the second polarity. When the comparison result determines that the motor should be connected in the first connection method, it is determined that the motor is the first polarity; similarly, when the comparison result determines that the motor should be connected in the second connection method, it is determined that the motor is the second connection method. polarity.

The method for determining the motor polarity provided by the present application includes: connecting the motor according to a first connection method, inputting a first excitation signal to drive the motor to vibrate, collecting the first vibration signal of the motor in the first connection method, and obtaining the first vibration signal of the motor under the first connection method. A vibration signal corresponds to the first acceleration of the brake section. The motor is connected according to the second connection method which is opposite to the polarity of the motor under the first connection method. The first excitation signal is input to drive the motor to vibrate, and the motor is collected in the second connection. Enter the second vibration signal under the method and obtain the second vibration signal and the second acceleration corresponding to the brake section, compare the first acceleration of the first vibration signal and the second vibration signal corresponding to the second acceleration of the brake section, according to the comparison The result determines the polarity of the motor. In this connection method, the motor vibration tailing oscillation meets the expected requirements, the motor vibration tailing is small, and the expected effect can be achieved.

Further, determining the polarity of the motor according to the comparison result includes:

When the first acceleration is less than the second acceleration, it is determined that the polarity of the motor corresponds to the first connection method;

When the first acceleration is greater than the second acceleration, it is determined that the polarity of the motor corresponds to the second connection method.

Specifically, in the embodiments of the present application, as described above, the motor vibrator is subjected to two different access methods, and the same excitation signal is applied to the motor to vibrate the motor, and the motor vibrator will generate different vibration accelerations. The acceleration values of the two different accelerations in the braking section of the excitation signal are significantly different. Compare the vibration acceleration of the motor under the two access methods collected from the excitation signal brake section, that is, compare the first acceleration and the second acceleration. When the first acceleration is smaller than the second acceleration, that is It is determined that the motor should be connected according to the first connection method, that is, it is determined that the polarity of the motor is the above-mentioned first polarity. In this way, the motor will vibrate after being excited by the excitation signal in normal use, and it can have a good tailing effect in the braking section of the excitation signal. A good tailing effect means that the amount of motor vibration tailing oscillation meets the expected requirements, and the motor vibration tailing is small. , You can achieve the expected effect. When the magnitude of the first acceleration is greater than the magnitude of the second acceleration, it is determined that the motor is connected according to the second connection method, that is, the polarity of the motor is determined to be the second polarity, so that the motor is excited by the excitation signal in normal use After vibration, it can have a good trailing effect in the braking section of the excitation signal.

In the embodiment of the present application, the excitation signal used to excite the motor vibration may have a sufficiently large displacement level, that is, the excitation signal may excite the displacement of the motor to a sufficiently large level. In the present application, it may be the displacement excitation of the motor. The displacement level to the steady state of the rated voltage of the motor. In addition, the excitation signal used to excite the motor can have a sufficiently fast braking time, that is, the excitation signal can be an excitation signal for configuring a braking section, and the excitation signal can restore the motor vibrator to a zero displacement level in a short time. In addition, the excitation signal used to excite the motor vibration may be a non-periodic signal with a duration of less than 50 ms, which can further improve the efficiency of determining the motor polarity.

Further, both the first acceleration and the second acceleration are measured and extracted by an accelerometer.

In the embodiment of the present application, the measurement of the acceleration of the motor is the measurement using an accelerometer. Specifically, the motor and the acceleration measurement tool can be viscously fixed, and the accelerometer can be fixed on the measurement tool. When an excitation signal is applied to the motor, the vibration of the motor will drive the vibration of the measuring tool, and the accelerometer can measure the acceleration of the motor by measuring the acceleration of the tool. When the motor is connected in the first connection method, the accelerometer is used to measure the first vibration acceleration of the motor in the vibration process under the excitation of the excitation signal. When the motor is connected in the second connection method, the accelerometer is used to measure the second vibration acceleration of the motor in the vibration process under the excitation of the excitation signal. Then according to the specific signal of the excitation signal, the excitation signal is divided into the acceleration section and the braking section, and the beginning and end positions of the braking section are determined. Based on this, the first vibration acceleration and the second vibration acceleration of the motor are extracted from the first vibration acceleration and the second vibration acceleration. An acceleration and a second acceleration.

Further, both the first acceleration and the second acceleration are measured and extracted by the infrared light displacement measuring device.

In the embodiment of the present application, the acceleration measurement of the motor can also be measured using an infrared light displacement measuring device. By measuring the displacement of the motor, a more accurate acceleration measurement value can be obtained by calculation. By measuring the vibration displacement of the motor under the same excitation signal when the motor is connected in two connection methods, the vibration acceleration of the motor corresponding to the two different connection methods can be calculated. It can be understood that the steps of extracting the acceleration of the motor in the braking section of the excitation signal are the same as the steps in the foregoing embodiment of using an accelerometer to measure the acceleration of the motor, and will not be repeated here.

Further, the method also includes:

When the motor is connected according to the first connection method, the acquisition card will transmit the first excitation signal to the motor after digital-to-analog conversion to drive the motor to vibrate;

Receive the first acceleration collected by the collection card, the first acceleration is collected by the accelerometer and sent to the collection card;

When the motor is connected according to the second connection method, sending the first excitation signal to the acquisition card, and the acquisition card performs digital-to-analog conversion of the first excitation signal and sends it to the motor to drive the motor to vibrate;

The second acceleration collected by the collection card is received, and the second acceleration is collected by the accelerometer and sent to the collection card.

In the embodiment of the present application, when the motor is connected in the first connection mode, the processor sends the first excitation signal to the capture card, and the capture card sends the first excitation signal to the motor to drive the motor to vibrate. In addition, the acquisition card is also connected to an accelerometer or an infrared displacement measuring device that measures the acceleration of the motor to collect the acceleration of the motor vibration. The acquisition card sends the acquired motor acceleration to the processor. Similarly, when the motor is connected in the second connection mode, the processor sends a second excitation signal to the acquisition card. It can be understood that the second excitation signal is the same as the above-mentioned first excitation signal. The acquisition card sends the second excitation signal to the motor to drive the motor to vibrate. In addition, the capture card is also used to capture the acceleration of motor vibration and send the captured acceleration to the processor. The processor may be a personal computer or other equipment with processing and computing functions.

A second aspect of the present invention provides a motor polarity determination device. As shown in FIG. 3, a schematic diagram of a module of the motor polarity determination device provided in this application. The device includes:

The acceleration acquisition module 301 is configured to acquire the first acceleration of the excitation signal brake segment when the motor is connected according to the first connection method and the second acceleration of the excitation signal brake segment when the motor is connected according to the second connection method.

The comparison module 302 is used to compare the first acceleration and the second acceleration to obtain a comparison result.

The motor polarity determination module 303 is used to determine the motor polarity according to the comparison result.

In an embodiment of the present application, a motor polarity determination device is provided. The motor polarity determination device includes an acceleration acquisition module 301, a comparison module 302, and a motor polarity determination module 303. The modules are connected to each other and can exchange data.

The acceleration acquisition module 301 is configured to acquire the first acceleration of the excitation signal brake segment when the motor is connected according to the first connection method and the second acceleration of the excitation signal brake segment when the motor is connected according to the second connection method. Specifically, the acceleration acquisition module is connected to the acquisition card, and the acquisition card collects the acceleration of the motor measured by the accelerometer in the braking segment of the excitation signal in the two polarity states, and sends the collected acceleration to the acceleration acquisition module 301.

The motor polarity determination module 303 is configured to determine the motor polarity according to the comparison result sent by the comparison module 302.

A third aspect of the present invention provides a readable storage medium. The storage medium may be an electronic device provided in the foregoing embodiments, and the readable storage medium may be a memory. A computer program is stored on the storage medium, and when the program is executed by the processor, the method for determining the motor polarity in the foregoing embodiment is implemented. Further, the storable medium may also be a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a RAM, a magnetic disk, or an optical disk and other various media that can store program codes.

A fourth aspect of the present invention provides a motor polarity determination device. As shown in FIG. 4, it is a schematic structural diagram of a motor polarity detection device provided in an embodiment of the present application. The device includes:

Acquisition card 402, processor 401 and accelerometer 405 electrically connected to the acquisition card, tooling 406 connected to the accelerometer, tooling 406 for placing the motor 408 of the access method to be determined;

The processor 401 is configured to implement the steps in the method for determining the motor polarity provided in the first aspect.

In the embodiment of the present application, the motor polarity determination device provided in the present application has a capture card 402, a processor 401, an acceleration measurement tool 406, and an accelerometer 405 for measuring acceleration. When determining the connection method, the motor 408 is connected and fixed to the tooling 406 according to two opposite methods. The processor 401 sends an excitation signal to the motor through the acquisition card 402, and acquires the vibration acceleration of the motor 408 through the acquisition card 402 and the tooling 406. The processor 401 compares the accelerations collected by the two access methods to determine the access mode of the motor. It can be understood that, during execution, the processor implements the steps in the method for determining the motor polarity provided in the first aspect.

Further, the equipment also includes:

The first amplifier 403 is electrically connected to the acquisition card 402 and the motor 408, and the first amplifier 403 is used to amplify the excitation signal sent by the acquisition card 402 and transmit it to the motor 408 to excite the motor 408 to vibrate;

The second amplifier 404 and the second amplifier 404 are electrically connected to the accelerometer 405 and the acquisition card 402, and the second amplifier 404 is used to amplify the acceleration signal collected by the accelerometer 405 and transmit it to the acquisition card 402.

The motor polarity determination device provided in the embodiment of the present application further includes a first amplifier 403 electrically connected to the acquisition card 402 and the motor 408. The first amplifier 403 is used to send the acquisition card 402 to the excitation of the first amplifier 403. The signal is amplified and sent to the motor 408. In addition, the device also has a second amplifier 404 that is electrically connected to the acquisition card 402 and the accelerometer 405, and the second amplifier 404 is used to transmit the acceleration signal collected from the accelerometer 405 to the acquisition card 402 after performing a method. The first amplifier 403 and the second amplifier 404 of the device amplify the transmitted excitation signal and the collected acceleration signal, which can make the motor vibration effect more obvious and the collected data more accurate, thereby making the determination result more accurate.

Further, the motor polarity determination device provided in the present application further includes a buffering member 407, which is placed at the bottom of the tooling 406, and the buffering member is used to avoid the influence of the external environment on the acceleration measurement result of the tooling.

It can be understood that placing the tooling 406 on the buffer member 407 can reduce the acceleration of the vibration of the tooling caused by the vibration of the external environment, thereby avoiding the influence of the external environment on the acceleration measurement result of the tooling.

Specifically, when determining the motor polarity, first connect to the motor according to the first method, and the excitation signal sent by the processor 401 is amplified by the acquisition card 402 and the amplifier 403 to act on the motor 404, so that the motor 404 vibrates, and the accelerometer 405 detects During the whole process, the acceleration of the motor is amplified by the amplifier 403 and then transmitted to the processor 401 through the acquisition card 402. Then the motor is connected in a method opposite to the first connection method, and the above operations are repeated to obtain the vibration acceleration of the whole process when the motor is connected in a method opposite to the first connection method. The motor vibration acceleration obtained by the two access methods is compared with the acceleration in the braking section of the excitation signal, and the access method with the smaller acceleration is the motor access method, that is, the polarity of the motor is determined.

The above are only the embodiments of the present invention. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the present invention. The scope of protection.

Claims

A method for determining the polarity of a motor, wherein the motor includes two connecting ends, and the method includes:

The motor is connected according to the first connection method, and a first excitation signal is input to drive the motor to vibrate, and the first excitation signal includes an acceleration section for driving the motor to vibrate, and a constant section for realizing the vibration effect of the motor Signal and the brake section used to reduce the vibration of the motor in a low-frequency manner;

Collecting the first vibration signal of the motor in the first connection method and acquiring the first acceleration corresponding to the first vibration signal and the brake segment;

Connect the motor according to a second connection method that is opposite to the polarity of the motor under the first connection method, and input the first excitation signal to drive the motor to vibrate;

Collecting a second vibration signal of the motor in the second connection method and acquiring the second vibration signal and the second acceleration corresponding to the brake segment;

The first acceleration of the brake segment is compared with the second vibration signal corresponding to the second acceleration of the brake segment, and the polarity of the motor is determined according to the comparison result.
The method for determining the polarity of a motor according to claim 1, wherein the determining the polarity of the motor according to a comparison result comprises:

When the first acceleration is less than the second acceleration, determining that the polarity of the motor corresponds to the first access method;

When the first acceleration is greater than the second acceleration, it is determined that the polarity of the motor corresponds to the second access method.
The motor polarity determination method according to claim 1 or 2, wherein the excitation signal is an aperiodic signal with a duration of less than 50 ms.
The method for determining the motor polarity according to claim 3, wherein the first acceleration and the second acceleration are both measured and extracted by an accelerometer.
The method for determining the motor polarity according to claim 3, wherein the first acceleration and the second acceleration are both measured and extracted by an infrared light displacement measuring device.
The motor polarity determination method according to claim 4, characterized in that it comprises:

When the motor is connected according to the first access method, the acquisition card performs digital-to-analog conversion of the first excitation signal and transmits it to the motor to drive the motor to vibrate;

Receiving the first acceleration collected by the collection card, where the first acceleration is collected by the accelerometer and sent to the collection card;

When the motor is connected according to the second connection method, the first excitation signal is sent to the acquisition card, and the acquisition card performs digital-to-analog conversion of the first excitation signal and sends it to the motor to drive the motor to vibrate ；

Receiving the second acceleration collected by the collection card, where the second acceleration is collected by the accelerometer and sent to the collection card.
A device for determining the polarity of a motor, characterized in that the device comprises:

An acceleration acquisition module for acquiring the first acceleration of the excitation signal brake segment when the motor is connected according to the first connection method and the second acceleration of the excitation signal brake segment when the motor is connected according to the second connection method; The first access method and the second access method are the opposite access methods when the motor is connected to the electronic device. The excitation signal includes an acceleration section for driving the motor to vibrate, and a constant section for realizing the vibration effect of the motor. Signal and the brake section used to reduce the vibration of the motor in a low-frequency manner;

A comparison module, configured to compare the first acceleration and the second acceleration to obtain a comparison result;

The motor polarity determination module is used to determine the polarity of the motor according to the comparison result.
A readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, each step in the method for determining the motor polarity according to any one of claims 1 to 6 is realized .
A device for determining the polarity of a motor, characterized in that the device comprises:

A capture card, a processor and an accelerometer that are electrically connected to the capture card, a tool that is electrically connected to the accelerometer, and the tool is used to place a motor whose access method is to be determined;

The processor is used to implement the steps in the method for determining the motor polarity according to any one of claims 1 to 6.
The motor polarity determination device according to claim 9, wherein the device further comprises:

A first amplifier, the first amplifier is electrically connected to the acquisition card and the motor, and the first amplifier is used to amplify the excitation signal sent by the acquisition card and transmit it to the motor to excite the motor to vibrate;

The second amplifier is electrically connected to the accelerometer and the acquisition card, and the second amplifier is used to amplify the acceleration signal collected by the accelerometer and transmit it to the acquisition card.
The motor polarity determination device according to claim 9 or 10, wherein the device further comprises:

The buffering member is placed at the bottom of the tooling, and the buffering member is used to avoid the influence of the external environment on the acceleration measurement result of the tooling.