CN113708590A - Linear vibration motor, tactile feedback vibration module, control method and device - Google Patents
Linear vibration motor, tactile feedback vibration module, control method and device Download PDFInfo
- Publication number
- CN113708590A CN113708590A CN202010440443.8A CN202010440443A CN113708590A CN 113708590 A CN113708590 A CN 113708590A CN 202010440443 A CN202010440443 A CN 202010440443A CN 113708590 A CN113708590 A CN 113708590A
- Authority
- CN
- China
- Prior art keywords
- coils
- magnetic field
- pairs
- vibration
- haptic feedback
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000013598 vector Substances 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 14
- 230000004044 response Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 14
- 238000004891 communication Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 238000003786 synthesis reaction Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/27—Devices for sensing current, or actuated thereby
Abstract
The disclosure relates to a linear vibration motor, a haptic feedback vibration module, a control method and a device. The linear vibration motor comprises a plurality of pairs of coils and a magnetic vibrator arranged between the plurality of pairs of coils, wherein each pair of coils in the plurality of pairs of coils is distributed on different spatial positions; the plurality of pairs of coils generate alternating magnetic fields based on an input energizing current; and the magnetic vibrator vibrates based on the direction of the resultant magnetic field after the alternating magnetic field vector is synthesized. The multi-directional vibration of the linear motor can be realized by the present disclosure.
Description
Technical Field
The disclosure relates to the technical field of terminals, in particular to a linear vibration motor, a touch feedback vibration module, a control method and a control device.
Background
With the development of science and technology, the application of the haptic feedback vibration function in the terminal is more and more extensive.
The realization of the tactile feedback vibration function is realized through a tactile feedback vibration module (haptic) arranged on the terminal. The touch feedback vibration module is mainly realized by controlling the magnetic vibrator to vibrate through a coil in the linear vibration motor. However, in the related art, the linear vibration motor has a single vibration direction for controlling the magnetic vibrator, and cannot achieve a rich vibration feedback effect in an application scene with complicated man-machine interaction.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a linear vibration motor, a haptic feedback vibration module, a control method and an apparatus.
According to a first aspect of the embodiments of the present disclosure, there is provided a linear vibration motor including a plurality of pairs of coils, each of the plurality of pairs of coils being distributed at different spatial positions, and a magnetic vibrator disposed between the plurality of pairs of coils; the plurality of pairs of coils generate alternating magnetic fields based on an input energizing current; and the magnetic vibrator vibrates based on the direction of the resultant magnetic field after the alternating magnetic field vector is synthesized.
In one embodiment, the number of the plurality of pairs of coils is three, and a pair of coils is distributed in each coordinate axis direction of the three-dimensional space.
According to a second aspect of the embodiments of the present disclosure, there is provided a haptic feedback vibration module including the linear vibration motor described in the first aspect or any one of the implementation manners of the first aspect.
In one embodiment, the haptic feedback vibration module further comprises a driving circuit for synchronously driving the plurality of pairs of coils.
In another embodiment, the haptic feedback vibration module further comprises a calibration circuit for calibrating the resultant magnetic field directions generated by the plurality of pairs of coils.
In yet another embodiment, the calibration circuit includes a magnetic field sensor for detecting the alternating magnetic field generated by the plurality of pairs of coils, and a detection circuit for detecting the energization current inputted by the plurality of pairs of coils.
According to a third aspect of the embodiments of the present disclosure, there is provided a haptic feedback vibration control method applied to a terminal, where the terminal includes the haptic feedback vibration module described in the second aspect or any one of the second aspects, the haptic feedback vibration control method including: determining, for a target vibration direction of a magnetic vibrator in a linear vibration motor, an energization current for each of a plurality of pairs of coils included in the linear vibration motor in the target vibration direction; and controlling each pair of coils in the plurality of pairs of coils to generate an alternating magnetic field based on the energizing current of each pair of coils in the plurality of pairs of coils, and controlling a magnetic vibrator of the linear vibration motor to vibrate in a resultant magnetic field direction generated by the alternating magnetic field.
In one embodiment, the number of the plurality of pairs of coils is three, and a pair of coils is distributed in each coordinate axis direction of the three-dimensional space; the determining an energization current of each of a plurality of pairs of coils included in the linear vibration motor in the target vibration direction includes: determining a sub-vibration direction corresponding to a two-dimensional plane formed by any two coordinate axes in the three-dimensional space based on the target vibration direction; and determining the energizing current of the coil arranged in any two coordinate axes in the three-dimensional space based on the sub-vibration direction, wherein the sub-vibration direction of the magnetic vibrator in the two-dimensional plane is the tangent angle of the ratio of the energizing current values of the coil on any two coordinate axes.
In another embodiment, the method further comprises: and in response to the fact that the direction of the resultant magnetic field is not consistent with the target vibration direction, calibrating the direction of the resultant magnetic field of the alternating magnetic fields generated by the plurality of pairs of coils, enabling the calibrated direction of the resultant magnetic field to be consistent with the target vibration direction, and controlling the magnetic vibrator to vibrate in the calibrated direction of the resultant magnetic field.
In another embodiment, calibrating the resultant magnetic field directions generated by the plurality of pairs of coils so that the calibrated resultant magnetic field directions are consistent with the target vibration direction includes: detecting, by a detection circuit, an energization current of each of the plurality of pairs of coils; and adjusting the current of each pair of coils to make the direction of the resultant magnetic field detected by the magnetic field sensor consistent with the target vibration direction.
According to a fourth aspect of the embodiments of the present disclosure, there is provided a haptic feedback vibration control device including: a determination unit configured to determine, for a target vibration direction of a magnetic vibrator in a linear vibration motor, an energization current for each of a plurality of pairs of coils included in the linear vibration motor in the target vibration direction; and the vibration unit is used for controlling each pair of coils in the plurality of pairs of coils to generate an alternating magnetic field and controlling the magnetic vibrator of the linear vibration motor to vibrate in the direction of a resultant magnetic field generated by the alternating magnetic field based on the electrifying current of each pair of coils in the plurality of pairs of coils.
In one embodiment, the number of the plurality of pairs of coils is three, and a pair of coils is distributed in each coordinate axis direction of the three-dimensional space; the determination unit determines the energization current of each of a plurality of pairs of coils included in the linear vibration motor in the target vibration direction in such a manner that: determining a sub-vibration direction corresponding to a two-dimensional plane formed by any two coordinate axes in the three-dimensional space based on the target vibration direction; and determining the energizing current of the coil arranged in any two coordinate axes in the three-dimensional space based on the sub-vibration direction, wherein the sub-vibration direction of the magnetic vibrator in the two-dimensional plane is the tangent angle of the ratio of the energizing current values of the coil on any two coordinate axes.
In another embodiment, the haptic feedback vibration control device further comprises: and the calibration unit is used for responding to the inconsistency between the direction of the resultant magnetic field and the target vibration direction, calibrating the direction of the resultant magnetic field of the alternating magnetic fields generated by the plurality of pairs of coils, enabling the direction of the corrected resultant magnetic field to be consistent with the target vibration direction, and controlling the magnetic vibrator to vibrate in the direction of the corrected resultant magnetic field.
In another embodiment, the calibration unit calibrates the resultant magnetic field directions generated by the plurality of pairs of coils in such a way that the calibrated resultant magnetic field direction coincides with the target vibration direction: detecting, by a detection circuit, an energization current of each of the plurality of pairs of coils; and adjusting the current of each pair of coils to make the direction of the resultant magnetic field detected by the magnetic field sensor consistent with the target vibration direction.
According to a fifth aspect of an embodiment of the present disclosure, there is provided an apparatus for haptic feedback vibration control, characterized by comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: the haptic feedback vibration control method described in the third aspect or any one of the embodiments of the third aspect is performed.
According to a sixth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, wherein instructions of the storage medium, when executed by a processor of a mobile terminal, enable the mobile terminal to perform the haptic feedback vibration control method according to the third aspect or any one of the implementation manners of the third aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the linear vibration motor is provided with a plurality of pairs of coils, the plurality of pairs of coils can generate different alternating magnetic fields based on different electrified currents, and then the magnetic vibrator can vibrate in different resultant magnetic field directions after vector synthesis based on different alternating magnetic fields. Therefore, based on any target vibration direction, the magnitude and direction of the current of the coils are changed by controlling the current of the coils, so that the vibration of the magnetic vibrator in the corresponding target vibration direction can be controlled, the multi-directional vibration effect of the linear motor is realized, and the experience of tactile feedback is enriched.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram showing a plurality of pairs of coils distributed in a three-dimensional spatial coordinate axis direction in a linear vibration motor according to an exemplary embodiment.
Fig. 2 is a schematic diagram of a coil structure shown in accordance with an exemplary embodiment.
Fig. 3 is a schematic diagram illustrating a correspondence relationship between an alternating current and an alternating magnetic field according to an exemplary embodiment.
FIG. 4 is a schematic diagram illustrating a vibration direction determination according to an exemplary embodiment.
Fig. 5 is a schematic diagram illustrating a calibration circuit according to an example embodiment.
FIG. 6 is a flow chart illustrating a haptic feedback vibration control method in accordance with an exemplary embodiment.
FIG. 7 is a schematic illustration of a sub-oscillation direction determination, according to an exemplary embodiment.
FIG. 8 is a block diagram illustrating a haptic feedback vibration control device in accordance with an exemplary embodiment.
FIG. 9 is a block diagram illustrating an apparatus for haptic feedback vibration control in accordance with an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The demand of users on the growing HAPTIC touch market is higher and higher, unidirectional vibration cannot meet the demand of users, and in more complex application scenes, HAPTics with multiple vibration directions are needed. In order to realize multi-directional vibration of a linear vibration motor, the embodiment of the present disclosure provides a linear vibration motor including a plurality of pairs of coils, and controls a magnetic vibrator to vibrate in a resultant magnetic field direction based on vector synthesis of alternating magnetic fields generated by respective energization currents of the plurality of pairs of coils.
The linear vibration motor provided by the embodiment of the present disclosure includes a plurality of pairs of coils, and a magnetic vibrator disposed between each pair of coils. Wherein each pair of coils of the plurality of pairs of coils is distributed at a different spatial position. The plurality of pairs of coils generate alternating magnetic fields based on the input energization current, and the magnetic vibrator vibrates in a resultant magnetic field direction of vector synthesis based on vector synthesis of the alternating magnetic fields generated by the plurality of pairs of coils.
The linear motor in the embodiment of the present disclosure may include two or more pairs of coils, and each pair of coils in the pairs of coils is distributed in different spatial position directions to form a resultant magnetic field direction by vector synthesis.
In one implementation manner, in the embodiment of the present disclosure, the number of the coils is three, and a pair of coils is distributed in each coordinate axis direction of the three-dimensional space. Fig. 1 is a schematic diagram illustrating a plurality of pairs of coils respectively distributed in a three-dimensional space coordinate axis direction according to an exemplary embodiment of the present disclosure. Referring to fig. 1, the coils inside the linear vibration motor have coil distribution on the x-axis, the y-axis, and the z-axis, and when magnetic fields in different directions are required, different alternating magnetic fields are generated by changing the current of the coils. Based on alternating magnetic field vector synthesis, the vibrator is controlled to vibrate in the resultant magnetic field direction of vector synthesis.
In the embodiments of the present disclosure, the vibration in the x direction is exemplified. Fig. 2 shows a schematic diagram of a coil structure according to an exemplary embodiment of the present disclosure. Referring to fig. 2, a pair of coils arranged in the x direction includes two coils, and a magnetic vibrator is disposed between the two coils. When alternating current is input into the two coils, an alternating magnetic field is generated. The magnetic vibrator generates vibration in a certain direction based on the action of the alternating magnetic field. It will be appreciated that the magnitude of the alternating magnetic field is proportional to the magnitude of the alternating current. Fig. 3 shows a corresponding schematic diagram of an alternating current and an alternating magnetic field as shown in an exemplary embodiment of the present disclosure. As shown in fig. 3, the alternating current varies periodically with time in a sine wave shape, and accordingly an alternating magnetic field with the same phase sine wave shape is generated, and the intensity of the magnetic field of the alternating magnetic field is proportional to the current of the alternating current. The magnetic transducer shown in fig. 2 is subjected to the alternating magnetic field shown in fig. 3, and periodically reciprocates in a certain direction.
The energization current of each of a plurality of pairs of coils of the linear vibration motor is determined based on the target vibration direction of the magnetic vibrator in the linear vibration motor. Based on the energizing current of each pair of coils in the plurality of pairs of coils, each pair of coils in the plurality of pairs of coils is controlled to generate an alternating magnetic field, and the magnetic vibrator of the linear vibration motor is controlled to vibrate in the direction of the resultant magnetic field generated by different alternating magnetic fields.
In an example, taking a two-dimensional plane as an example, based on a sub-vibration direction in the two-dimensional plane, the energization current of the coil on the corresponding coordinate axis in the two-dimensional plane may be determined, and the tangent angle of the current value ratio is the vibration direction of the vibrator corresponding to the two-dimensional plane. Referring to fig. 4, the xoy plane is illustrated.
Suppose that a pair of coils is respectively arranged in the x-axis direction and the y-axis direction, and the two pairs of coils are respectively distributed at two ends of the origin along the x-axis direction and the y-axis direction. In the embodiment of the disclosure, the current magnitude and direction are determined based on the vibration direction of the magnetic vibrator. For example, in fig. 4, when the linear vibration motor needs to vibrate in the vibration direction 1, the magnetic field strength B in the vibration direction 1 is obtainedmA 1 to BmDecomposing the magnetic field on the x axis and the y axis to obtain the magnetic field intensity B on the x axis and the y axis respectivelyxAnd ByThe magnetic field intensity directions are respectively along the positive direction of an x axis and the positive direction of a y axis. Since the ratio of the magnitude of the magnetic field to the magnitude of the current is proportional, i.e. By/Bx＝Iy/IxObtaining the current value I of the x-axis coil and the y-axis coil through calculationxAnd IyAnd obtaining the electrifying current directions of the x-axis coil and the y-axis coil based on the magnetic field direction. Meanwhile, according to the embodiment, the tangent angle, namely the angle theta value in the graph, can be obtained through calculation of the tangent function according to the ratio of the current values of the electrified coils. In this embodiment, an included angle with the x-axis can be regarded as a resultant magnetic field direction angle on the xoy plane, that is, an angle of the vibration direction 1. Similarly, when vibration in the vibration direction 2 is required, it is based on the magnetic field strength B in the vibration direction 2m' obtaining the magnetic field intensity B on the x-axis and the y-axisx' and By' the magnetic field strength is respectively along the negative direction of the x-axis and the positive direction of the y-axis. Calculating to obtain corresponding electrified current Ix' and Iy', and the value of the angle theta' of the vibration direction 2.
It can be understood that, in the embodiments of the present disclosure, to make the resultant magnetic field vector direction generated by the coils in the xoy plane include any direction of 360 ° in the same plane, the vibration of the magnetic vibrator in any vibration direction in the xoy plane can be realized by controlling the magnitude and direction of the current in the two pairs of coils in the x-axis direction and the y-axis direction.
Similarly, when vibration is required in any direction in a three-dimensional space, the magnitude and direction of the current in each of the three pairs of coils in the x-axis direction, the y-axis direction, and the z-axis direction need to be controlled so that the resultant direction of the magnetic field vectors formed by the coils is directed to any region in the space, and the vibrator is caused to vibrate in the resultant magnetic field direction after the magnetic field vectors are combined, thereby realizing vibration in any direction in the three-dimensional space.
In one example, the number of the plurality of pairs of coils is three, and a pair of coils is distributed in each coordinate axis direction of the three-dimensional space. When determining the energization current of each of the plurality of pairs of coils included in the linear vibration motor in the target vibration direction, the sub-vibration direction corresponding to the two-dimensional plane formed by any two coordinate axes in the three-dimensional space may be determined based on the target vibration direction. Based on the sub-vibration direction, the energization current of the coil provided in any two coordinate axes in the three-dimensional space is determined. The sub-vibration direction of the magnetic vibrator in the two-dimensional plane is an orthotropic angle of the ratio of the energization current values of the coils on any two coordinate axes.
For the process of determining the correspondence between the sub-vibration direction corresponding to the two-dimensional plane formed by any two coordinate axes in the three-dimensional space and the energization current of the coil arranged in any two coordinate axes in the three-dimensional space, reference may be made to the process of determining the vibration direction and the energization current by the xoy plane in the above embodiment, and details are not described here.
The linear vibration motor that this disclosed embodiment provided is provided with the coil on a plurality of directions, utilizes electromagnetic induction for a plurality of coils produce magnetic field in the equidirectional not, and then realize that the magnetic vibrator vibrates in arbitrary direction, reach abundant sense of shaking and experience.
Based on the same concept, the embodiment of the present disclosure also provides a haptic feedback vibration module, where the haptic feedback vibration module includes the linear vibration motor related to the above embodiment, and the linear vibration motor includes a plurality of pairs of coils.
Furthermore, in order to realize synchronous control of a plurality of magnetic fields generated by the plurality of pairs of coils, a driving circuit for synchronously inputting the energization current to the plurality of pairs of coils may be disposed in the haptic feedback vibration module, so as to ensure the consistency of the phases of the input energization current.
Furthermore, in the embodiment of the disclosure, the haptic feedback vibration module further includes a calibration circuit, where the calibration circuit is configured to calibrate the directions of the resultant magnetic fields generated by the pairs of coils, so that the calibrated direction of the resultant magnetic fields is consistent with the target vibration direction, and control the magnetic vibrator to vibrate in the calibrated direction of the resultant magnetic fields.
Fig. 5 is a schematic block diagram of a calibration circuit according to an exemplary embodiment of the present disclosure, which is described in the present disclosure, and the calibration circuit includes a CPU, a magnetic field sensor, and a detection circuit. The detection circuit is connected with the coil to be detected and used for detecting the electrifying current of the coil. The calibration circuit in the figure operates as follows: the magnetic field sensor transmits the detected actual magnetic field direction to the CPU, and the CPU compares the actual magnetic field direction of the combined magnetic field with the target vibration direction. And when the actual magnetic field direction is not consistent with the target magnetic field direction, the CPU sends a signal and starts the detection module. The detection circuit obtains the current value of the electrified coil by detecting the voltage of the resistor in the graph, and the waveform phase of the electrified current needs to be detected simultaneously because the electrified current is alternating current, so that the current parameter is finally obtained. The detection circuit transmits the obtained current parameters to the CPU, and the CPU calibrates the current of the x-axis coil and the waveform phase of the current through internal operation to enable the direction of the generated magnetic field to be consistent with the target vibration direction.
Similarly, the detection circuit can simultaneously and respectively detect coil currents on an x axis, a y axis and a z axis, and the CPU enables the direction of a resultant magnetic field generated by the CPU to be consistent with the direction of target vibration by calibrating the coil currents in the three axis directions.
Because of the existence of some interference factors, the generated magnetic field direction usually has errors, the calibration is carried out based on the calibration circuit, the actual magnetic field direction is calibrated to the target magnetic field direction, the direction errors generated by the interference factors are eliminated, and the vibration feedback effect is perfected.
Based on the same concept, the embodiment of the present disclosure also provides a terminal including the haptic feedback vibration assembly according to the above embodiment. The touch feedback assembly comprises a plurality of pairs of coils arranged in a plurality of directions, and the plurality of coils generate magnetic fields in different directions by utilizing electromagnetic induction, so that the magnetic vibrator vibrates in the plurality of directions, and the aim of multidirectional vibration is fulfilled.
The haptic feedback vibration control method is used in a terminal, and the terminal comprises the haptic feedback vibration assembly according to the above embodiment. Where the haptic feedback assembly includes a plurality of pairs of coils arranged in a plurality of directions, fig. 6 is a flow chart illustrating a haptic feedback vibration control method according to an exemplary embodiment. Referring to fig. 6, the haptic feedback vibration control method includes the steps of:
in step S11, for a target vibration direction of the magnetic vibrator in the linear vibration motor, an energization current is determined for each of a plurality of pairs of coils included in the linear vibration motor in the target vibration direction.
In step S12, each of the plurality of pairs of coils is controlled to generate an alternating magnetic field based on the energization current of each of the plurality of pairs of coils, and the magnetic transducer of the linear vibration motor is controlled to vibrate in the resultant magnetic field direction generated by the alternating magnetic field.
In one embodiment of the present disclosure, the energization current of each of the plurality of pairs of coils is obtained based on the target vibration direction. And the size and the direction of the current are changed by controlling the energization current of the coil, so that different alternating magnetic fields are generated. The plurality of pairs of coils generate a plurality of different alternating magnetic fields, and the magnetic vibrator can vibrate in the direction of the resultant magnetic field generated by the plurality of different alternating magnetic fields. In particular, reference may be made to the description of the vibration direction determination process shown in fig. 4 in the above embodiments, and details thereof will not be described here.
In an implementation manner of the embodiment of the present disclosure, the number of the plurality of pairs of coils is three, and a pair of coils is distributed in each coordinate axis direction of the three-dimensional space. When determining the energization current of each of a plurality of pairs of coils included in a linear vibration motor in a target vibration direction, it is first necessary to determine any coil in a three-dimensional spaceAnd meaning the sub-vibration directions corresponding to the two-dimensional plane formed by the two coordinate axes. And then determining the energizing current of the coil arranged in any two coordinate axes in the three-dimensional space through the obtained sub-vibration directions. The sub-vibration direction of the magnetic vibrator in the two-dimensional plane is an orthotropic angle of the ratio of the energization current values of the coils on any two coordinate axes. Fig. 7 schematically shows a sub-vibration direction determination diagram. Referring to fig. 7, when the vibration direction is the target vibration direction T, a sub-vibration direction of an xoz plane formed by the target vibration direction T in the x-axis and the z-axis, such as the sub-vibration direction S shown in fig. 7, may be determined by the target vibration direction T. Further obtaining the magnetic field intensity B on the x axis and the z axis1And B2. Thus, the energization current values on the x-axis and the z-axis are finally determined. The ratio of the two current values is calculated by a tangent function to obtain a tangent angle which is the angle theta shown in the figuresThe value is obtained.
Further, in the embodiment of the present disclosure, when the resultant magnetic field direction is not consistent with the target vibration direction of the magnetic vibrator, the resultant magnetic field direction of the alternating magnetic fields generated by the plurality of pairs of coils may be calibrated, so that the calibrated resultant magnetic field direction is consistent with the target vibration direction, and the magnetic vibrator is controlled to vibrate in the calibrated resultant magnetic field direction (target vibration direction).
In the embodiment of the disclosure, when the direction of the resultant magnetic field generated by the plurality of pairs of coils is calibrated, the detection circuit may detect the energization current of each pair of coils in the plurality of pairs of coils, and the energization current of each pair of coils is adjusted, so that the direction of the resultant magnetic field detected by the magnetic field sensor coincides with the target vibration direction.
For the calibration process of the synthetic magnetic field direction in the embodiment of the present disclosure, reference may be made to the description of the calibration process shown in fig. 5 in the above embodiment, and details thereof are not described here.
Through the embodiment, different resultant magnetic field directions are obtained by controlling the electrifying currents of a plurality of pairs of coils in the linear motor, so that the linear motor can vibrate in multiple directions, and the tactile feedback experience is improved.
Based on the same concept, the embodiment of the disclosure also provides a tactile feedback vibration control device.
It is understood that the haptic feedback vibration control device provided by the embodiments of the present disclosure includes hardware structures and/or software modules corresponding to the respective functions in order to implement the above functions. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
Fig. 8 is a block diagram illustrating a haptic feedback vibration control device 100 according to an exemplary embodiment. Referring to fig. 8, the haptic feedback vibration control device 100 includes a determination unit 101 and a vibration unit 102. Wherein the determination unit 101 is configured to determine, for a target vibration direction of a magnetic vibrator in the linear vibration motor, an energization current for each of a plurality of pairs of coils included in the linear vibration motor in the target vibration direction. And a vibration unit 102 configured to control each of the plurality of pairs of coils to generate an alternating magnetic field based on the energization current of each of the plurality of pairs of coils, and to control the magnetic vibrator of the linear vibration motor to vibrate in a resultant magnetic field direction generated by different alternating magnetic fields.
In one embodiment, the number of the plurality of pairs of coils is three, and a pair of coils is distributed in each coordinate axis direction of the three-dimensional space, and the determining unit 101 is configured to determine a sub-vibration direction corresponding to a two-dimensional plane formed by any two coordinate axes in the three-dimensional space based on the target vibration direction; and determining the energizing current of the coil arranged in any two coordinate axes in the three-dimensional space based on the sub-vibration direction, wherein the sub-vibration direction of the magnetic vibrator in the two-dimensional plane is the tangent angle of the ratio of the energizing current values of the coil on any two coordinate axes.
In another embodiment, the haptic feedback vibration control device 100 further includes a calibration unit 103 configured to calibrate a resultant magnetic field direction of the alternating magnetic fields generated by the plurality of pairs of coils in response to the resultant magnetic field direction not being consistent with the target vibration direction, so that the calibrated resultant magnetic field direction is consistent with the target vibration direction, and control the magnetic vibrator to vibrate in the calibrated resultant magnetic field direction.
In another embodiment, the calibration unit 103 is configured to detect, through the detection circuit, an energization current of each of the plurality of pairs of coils; and the direction of the resultant magnetic field detected by the magnetic field sensor is consistent with the target vibration direction by adjusting the electrifying current of each pair of coils.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
FIG. 9 is a block diagram illustrating an apparatus 200 for haptic feedback vibration control in accordance with an exemplary embodiment. For example, the apparatus 200 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 9, the apparatus 200 may include one or more of the following components: a processing component 202, a memory 204, a power component 206, a multimedia component 202, an audio component 210, an interface for input/output (I/O) 212, a sensor component 214, and a communication component 216.
The processing component 202 generally controls overall operation of the device 200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 202 may include one or more processors 220 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 202 can include one or more modules that facilitate interaction between the processing component 202 and other components. For example, the processing component 202 can include a multimedia module to facilitate interaction between the multimedia component 202 and the processing component 202.
The multimedia component 202 includes a screen that provides an output interface between the device 200 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 202 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 200 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 210 is configured to output and/or input audio signals. For example, audio component 210 includes a Microphone (MIC) configured to receive external audio signals when apparatus 200 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 204 or transmitted via the communication component 216. In some embodiments, audio component 210 also includes a speaker for outputting audio signals.
The I/O interface 212 provides an interface between the processing component 202 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 214 includes one or more sensors for providing various aspects of status assessment for the device 200. For example, the sensor component 214 may detect an open/closed state of the device 200, the relative positioning of components, such as a display and keypad of the apparatus 200, the sensor component 214 may also detect a change in position of the apparatus 200 or a component of the apparatus 200, the presence or absence of user contact with the apparatus 200, orientation or acceleration/deceleration of the apparatus 200, and a change in temperature of the apparatus 200. The sensor assembly 214 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 216 is configured to facilitate wired or wireless communication between the apparatus 200 and other devices. The device 200 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 216 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 216 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 200 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as memory 204, comprising instructions executable by processor 220 of device 200 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
It is understood that "a plurality" in this disclosure means two or more, and other words are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.
It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (16)
1. A linear vibration motor comprising a plurality of pairs of coils, each of which is distributed at a different spatial position, and a magnetic vibrator disposed between the plurality of pairs of coils;
the plurality of pairs of coils generate alternating magnetic fields based on an input energizing current;
and the magnetic vibrator vibrates based on the direction of the resultant magnetic field after the alternating magnetic field vector is synthesized.
2. The linear vibration motor of claim 1, wherein the number of the plurality of pairs of coils is three, and a pair of coils is distributed in each coordinate axis direction of the three-dimensional space.
3. A haptic feedback vibration module comprising the linear vibration motor of any one of claims 1 to 2.
4. A haptic feedback vibration module as recited in claim 3 further comprising a drive circuit for synchronously driving said plurality of pairs of coils.
5. A haptic feedback vibration module as recited in claim 3 or 4 further comprising a calibration circuit for calibrating a resultant magnetic field direction generated by said plurality of pairs of coils.
6. A haptic feedback vibration module as recited in claim 5 wherein said calibration circuit includes a magnetic field sensor for detecting alternating magnetic fields generated by said plurality of pairs of coils, and a detection circuit for detecting energization currents input by said plurality of pairs of coils.
7. A haptic feedback vibration control method applied to a terminal including the haptic feedback vibration module according to any one of claims 3 to 6, the haptic feedback vibration control method comprising:
determining, for a target vibration direction of a magnetic vibrator in a linear vibration motor, an energization current for each of a plurality of pairs of coils included in the linear vibration motor in the target vibration direction;
and controlling each pair of coils in the plurality of pairs of coils to generate an alternating magnetic field based on the energizing current of each pair of coils in the plurality of pairs of coils, and controlling a magnetic vibrator of the linear vibration motor to vibrate in a resultant magnetic field direction generated by the alternating magnetic field.
8. A haptic feedback vibration control method according to claim 7, wherein the number of the plurality of pairs of coils is three, and a pair of coils is distributed in each coordinate axis direction of a three-dimensional space;
the determining an energization current of each of a plurality of pairs of coils included in the linear vibration motor in the target vibration direction includes:
determining a sub-vibration direction corresponding to a two-dimensional plane formed by any two coordinate axes in the three-dimensional space based on the target vibration direction;
and determining the energizing current of the coil arranged in any two coordinate axes in the three-dimensional space based on the sub-vibration direction, wherein the sub-vibration direction of the magnetic vibrator in the two-dimensional plane is the tangent angle of the ratio of the energizing current values of the coil on any two coordinate axes.
9. A haptic feedback vibration control method as recited in claim 7 or 8 wherein said method further comprises:
and in response to the fact that the direction of the resultant magnetic field is not consistent with the target vibration direction, calibrating the direction of the resultant magnetic field of the alternating magnetic fields generated by the plurality of pairs of coils, enabling the calibrated direction of the resultant magnetic field to be consistent with the target vibration direction, and controlling the magnetic vibrator to vibrate in the calibrated direction of the resultant magnetic field.
10. A haptic feedback vibration control method as recited in claim 9 wherein calibrating a resultant magnetic field direction generated by said plurality of pairs of coils such that the calibrated resultant magnetic field direction coincides with said target vibration direction comprises:
detecting, by a detection circuit, an energization current of each of the plurality of pairs of coils;
and adjusting the current of each pair of coils to make the direction of the resultant magnetic field detected by the magnetic field sensor consistent with the target vibration direction.
11. A haptic feedback vibration control device, comprising:
a determination unit configured to determine, for a target vibration direction of a magnetic vibrator in a linear vibration motor, an energization current for each of a plurality of pairs of coils included in the linear vibration motor in the target vibration direction;
and the vibration unit is used for controlling each pair of coils in the plurality of pairs of coils to generate an alternating magnetic field and controlling the magnetic vibrator of the linear vibration motor to vibrate in the direction of a resultant magnetic field generated by the alternating magnetic field based on the electrifying current of each pair of coils in the plurality of pairs of coils.
12. A haptic feedback vibration control device as recited in claim 11 wherein said plurality of pairs of coils is three pairs, and a pair of coils is distributed in each coordinate axis direction of a three-dimensional space;
the determination unit determines the energization current of each of a plurality of pairs of coils included in the linear vibration motor in the target vibration direction in such a manner that:
determining a sub-vibration direction corresponding to a two-dimensional plane formed by any two coordinate axes in the three-dimensional space based on the target vibration direction;
and determining the energizing current of the coil arranged in any two coordinate axes in the three-dimensional space based on the sub-vibration direction, wherein the sub-vibration direction of the magnetic vibrator in the two-dimensional plane is the tangent angle of the ratio of the energizing current values of the coil on any two coordinate axes.
13. A haptic feedback vibration control device as recited in claim 11 or 12 further comprising:
and the calibration unit is used for responding to the inconsistency between the direction of the resultant magnetic field and the target vibration direction, calibrating the direction of the resultant magnetic field of the alternating magnetic fields generated by the plurality of pairs of coils, enabling the direction of the corrected resultant magnetic field to be consistent with the target vibration direction, and controlling the magnetic vibrator to vibrate in the direction of the corrected resultant magnetic field.
14. A haptic feedback vibration control device as recited in claim 13 wherein said calibration unit calibrates resultant magnetic field directions generated by said plurality of pairs of coils in such a manner that the calibrated resultant magnetic field directions coincide with the target vibration direction:
detecting, by a detection circuit, an energization current of each of the plurality of pairs of coils; and adjusting the current of each pair of coils to make the direction of the resultant magnetic field detected by the magnetic field sensor consistent with the target vibration direction.
15. An apparatus for haptic feedback vibration control, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to: the haptic feedback vibration control method of any one of claims 7 to 10 is performed.
16. A non-transitory computer readable storage medium having instructions therein which, when executed by a processor of a mobile terminal, enable the mobile terminal to perform the haptic feedback vibration control method of any one of claims 7 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440443.8A CN113708590A (en) | 2020-05-22 | 2020-05-22 | Linear vibration motor, tactile feedback vibration module, control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440443.8A CN113708590A (en) | 2020-05-22 | 2020-05-22 | Linear vibration motor, tactile feedback vibration module, control method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113708590A true CN113708590A (en) | 2021-11-26 |
Family
ID=78646144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010440443.8A Pending CN113708590A (en) | 2020-05-22 | 2020-05-22 | Linear vibration motor, tactile feedback vibration module, control method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113708590A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115664626A (en) * | 2022-12-13 | 2023-01-31 | 紫光同芯微电子有限公司 | Clock phase determining method and device, near field communication chip and near field communication equipment |
| TWI801210B (en) * | 2022-04-19 | 2023-05-01 | 台睿精工股份有限公司 | Force sensing module with vibration feedback |
| WO2024044890A1 (en) * | 2022-08-29 | 2024-03-07 | 深圳纽迪瑞科技开发有限公司 | Vibration feedback module, touch apparatus and electronic device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010057226A (en) * | 2008-08-26 | 2010-03-11 | Panasonic Electric Works Co Ltd | Actuator |
| JP2011000556A (en) * | 2009-06-19 | 2011-01-06 | Tohoku Univ | Electromagnetic drive actuator |
| CN104272160A (en) * | 2012-05-17 | 2015-01-07 | 旭化成微电子株式会社 | Control device for linear motion device and control method for same |
| CN105074624A (en) * | 2013-03-22 | 2015-11-18 | 三星电子株式会社 | Portable terminal and method for providing haptic effect |
| CN107534375A (en) * | 2015-04-17 | 2018-01-02 | 日本电产科宝株式会社 | Linear vibration motor |
| CN207939387U (en) * | 2018-03-23 | 2018-10-02 | 浙江省东阳市东磁诚基电子有限公司 | Quick response linear vibration motor structure |
-
2020
- 2020-05-22 CN CN202010440443.8A patent/CN113708590A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010057226A (en) * | 2008-08-26 | 2010-03-11 | Panasonic Electric Works Co Ltd | Actuator |
| JP2011000556A (en) * | 2009-06-19 | 2011-01-06 | Tohoku Univ | Electromagnetic drive actuator |
| CN104272160A (en) * | 2012-05-17 | 2015-01-07 | 旭化成微电子株式会社 | Control device for linear motion device and control method for same |
| CN105074624A (en) * | 2013-03-22 | 2015-11-18 | 三星电子株式会社 | Portable terminal and method for providing haptic effect |
| CN107534375A (en) * | 2015-04-17 | 2018-01-02 | 日本电产科宝株式会社 | Linear vibration motor |
| CN207939387U (en) * | 2018-03-23 | 2018-10-02 | 浙江省东阳市东磁诚基电子有限公司 | Quick response linear vibration motor structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI801210B (en) * | 2022-04-19 | 2023-05-01 | 台睿精工股份有限公司 | Force sensing module with vibration feedback |
| WO2024044890A1 (en) * | 2022-08-29 | 2024-03-07 | 深圳纽迪瑞科技开发有限公司 | Vibration feedback module, touch apparatus and electronic device |
| CN115664626A (en) * | 2022-12-13 | 2023-01-31 | 紫光同芯微电子有限公司 | Clock phase determining method and device, near field communication chip and near field communication equipment |
| CN115664626B (en) * | 2022-12-13 | 2023-05-12 | 紫光同芯微电子有限公司 | Clock phase determining method and device, near field communication chip and near field communication equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113708590A (en) | Linear vibration motor, tactile feedback vibration module, control method and device | |
| US9667870B2 (en) | Method for controlling camera operation based on haptic function and terminal supporting the same | |
| CN106412415B (en) | Mobile terminal and control method thereof | |
| CN105975156B (en) | Application interface display methods and device | |
| CN109977775B (en) | Key point detection method, device, equipment and readable storage medium | |
| KR20170024846A (en) | Mobile terminal and method for controlling the same | |
| CN103970500A (en) | Method and device for displaying picture | |
| CN110989901B (en) | Interactive display method and device for image positioning, electronic equipment and storage medium | |
| CN104156993A (en) | Method and device for switching face image in picture | |
| CN112866894A (en) | Sound field control method and device, mobile terminal and storage medium | |
| CN109901703B (en) | Terminal, vibration method of terminal and storage medium | |
| CN106067833B (en) | Mobile terminal and control method thereof | |
| CN104881342B (en) | terminal test method and device | |
| CN109117144A (en) | page processing method, device, terminal and storage medium | |
| CN111752370A (en) | Vibration control method and device of motor, terminal and storage medium | |
| CN108108738B (en) | Image processing method, device and terminal | |
| CN110515623A (en) | Graphic operation implementation method, device, electronic equipment and storage medium | |
| KR20110126438A (en) | Mobile terminal and operation method thereof | |
| CN115348351B (en) | Magnetic field detection method, device, terminal and storage medium | |
| CN109407942B (en) | Model processing method and device, control client and storage medium | |
| CN106780513B (en) | The method and apparatus of picture conspicuousness detection | |
| CN112242754A (en) | Wireless charging positioning method and device and mobile terminal | |
| KR101651477B1 (en) | Mobile terminal and operation method thereof | |
| CN110457084A (en) | A kind of loading method and device | |
| CN111246012A (en) | Application interface display method and device and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211126 |