A vibration device, a driving circuit, and an electronic device

Abstract

The application discloses a vibration device, a driving circuit and an electronic device, the vibration device comprising a first linear motor, a second linear motor, a connecting component and a first rotating component, the first linear motor and the second linear motor are respectively arranged at two ends of the connecting component, vibration directions of the first linear motor and the second linear motor are parallel and are both perpendicular to an axis direction of the connecting component, the first rotating component is fixed on the connecting component, and the first rotating component drives the vibration directions of the first linear motor and the second linear motor to rotate around the axis of the connecting component.

Description

Technical Field

[0001] This invention relates to the field of vibration device technology, and more specifically, to a vibration device, a drive circuit, and an electronic device. Background Technology

[0002] Linear motors (LRAs) have been widely used in various vibration applications in consumer electronics, especially in gaming and AR / VR products, due to their advantages such as strong, rich, and crisp vibrations and low energy consumption.

[0003] The limited richness of vibrations in a single direction and at a single frequency can no longer meet the vibration requirements of current consumer products. Summary of the Invention

[0004] One objective of this invention is to provide a new technical solution that can provide rich vibration feedback.

[0005] According to a first aspect of the present invention, a vibration device is provided, the vibration device comprising a first linear motor, a second linear motor, a connecting member and a first rotating member, wherein the first linear motor and the second linear motor are respectively disposed at both ends of the connecting member, and the vibration directions of the first linear motor and the second linear motor are parallel and both perpendicular to the axial direction of the connecting member;

[0006] The first rotating component is fixed to the connecting component, and the first rotating component is used to drive the vibration direction of the first linear motor and the second linear motor to rotate around the axis of the connecting component.

[0007] Optionally, the vibration device further includes a first spherical housing and a second spherical housing, wherein the first linear motor is disposed within the first spherical housing and the second linear motor is disposed within the second spherical housing.

[0008] Optionally, the vibration device further includes a second rotating component and a third rotating component. The second rotating component is used to drive the first linear motor to rotate within the first spherical housing, so that the vibration direction of the first linear motor changes in three-dimensional space. The third rotating component is used to drive the second linear motor to rotate within the second spherical housing, so that the vibration direction of the second linear motor changes in three-dimensional space.

[0009] According to a second aspect of this disclosure, a drive circuit for a vibration device is provided. The vibration device includes a first linear motor, a second linear motor, a connecting component, and a first rotating component. The first linear motor and the second linear motor are respectively disposed at both ends of the connecting component. The vibration directions of the first linear motor and the second linear motor are parallel and perpendicular to the axial direction of the connecting component. The first rotating component is fixed on the connecting component.

[0010] The driving circuit includes a first driving device and a second driving device;

[0011] The first driving device is configured to control the rotation of the first rotating component to change the vibration direction of the first linear motor and the second linear motor in a first plane, wherein the first plane is a plane perpendicular to the axis of the connecting component;

[0012] The second driving device is configured to drive the first linear motor and the second linear motor in phase to make the vibration device translate along the first direction; or, to drive the first linear motor and the second linear motor in opposite phase to make the vibration device rotate about the first axis.

[0013] Wherein, the first direction is the vibration direction of the first linear motor, and the first axis is perpendicular to the axis of the connecting component and perpendicular to the first direction.

[0014] Optionally, the second driving device includes a first signal output module, a first control module, a non-inverting output module, and an inverting output module.

[0015] The first signal output module is used to output a first drive signal to the first linear motor;

[0016] The first control module is used to control the in-phase output module to work when driving the first linear motor and the second linear motor in phase; and to control the inverted output module to work when driving the first linear motor and the second linear motor in reverse phase.

[0017] The in-phase output module is used to output the first drive signal to the second linear motor;

[0018] The inverting output module is used to invert the first drive signal to obtain a second drive signal, and output the second drive signal to the second linear motor.

[0019] Optionally, the first end of the first signal output module is connected to the first end of the first linear motor, and the second end of the first signal output module is connected to the second end of the first linear motor.

[0020] Optionally, the in-phase output module includes a first switch and a second switch, wherein the first switch is connected between a first terminal of the first signal output module and a first terminal of the second linear motor, and the second switch is connected between a second terminal of the first signal output module and a second terminal of the second linear motor;

[0021] When the first control module controls the in-phase output module to work, both the first switch and the second switch are turned on.

[0022] Optionally, the inverting output module includes a third switch and a fourth switch, wherein the third switch is connected between the first terminal of the first signal output module and the second terminal of the second linear motor, and the fourth switch is connected between the second terminal of the first signal output module and the first terminal of the second linear motor;

[0023] When the first control module controls the inverting output module to work, it controls both the third switch and the fourth switch to be turned on.

[0024] Optionally, the second drive device includes a second signal output module, a third signal output module, a second control module, and a gating module corresponding to each linear motor.

[0025] The second signal output module is used to output the third drive signal;

[0026] The third signal output module is used to output a fourth driving signal, wherein the third driving signal and the fourth driving signal are out of phase;

[0027] The second control module is used to control the state of the gating module;

[0028] The gating module is used to transmit the third drive signal to the corresponding linear motor in a first state and the fourth drive signal to the corresponding linear motor in a second state.

[0029] Optionally, the second drive device includes a DC power supply and an H-bridge drive circuit corresponding to each linear motor, wherein the H-bridge drive circuit is connected between the DC power supply and the corresponding linear motor.

[0030] When the first linear motor and the second linear motor are driven in phase, the H-bridge drive circuit corresponding to the first linear motor and the H-bridge drive circuit corresponding to the second linear motor output drive signals with the same phase.

[0031] When the first linear motor and the second linear motor are driven in opposite phase, the H-bridge drive circuits corresponding to the first linear motor and the second linear motor output drive signals with opposite phases.

[0032] Optionally, the vibration device further includes a second rotating component and a third rotating component.

[0033] The driving circuit includes a third driving device and a fourth driving device;

[0034] The third driving device is configured to control the rotation of the second rotating component to change the vibration direction of the first linear motor in three-dimensional space;

[0035] The fourth drive device is configured to control the rotation of the third rotating component to change the vibration direction of the second linear motor in three-dimensional space.

[0036] According to a third aspect of this disclosure, an electronic device is provided, including the driving circuit described in the second aspect of this disclosure.

[0037] In the embodiments of this disclosure, the first rotating component enables the reuse of two linear motors, thereby allowing the vibration device to achieve directional tactile sensations of translation in multiple dimensions and rotation around multiple dimensions, providing a tactile experience completely different from existing vibrations. Furthermore, it can also reduce the cost and weight of the vibration device.

[0038] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0040] Figure 1 This is a schematic diagram of a vibration device provided according to an embodiment of the present disclosure;

[0041] Figure 2 This is a schematic diagram of the directional acceleration waveform of a linear motor according to an embodiment of the present disclosure;

[0042] Figure 3 This is a schematic diagram of a vibration device provided according to an embodiment of the present disclosure;

[0043] Figure 4 This is a block diagram of a second driving device provided according to an embodiment of the present disclosure;

[0044] Figure 5 This is a circuit diagram of a second driving device provided according to an embodiment of the present disclosure;

[0045] Figure 6 This is a block diagram of a second driving device provided according to an embodiment of the present disclosure;

[0046] Figure 7 This is a circuit diagram of a second driving device provided according to an embodiment of the present disclosure;

[0047] Figure 8 This is a circuit diagram of a second driving device provided according to an embodiment of the present disclosure. Detailed Implementation

[0048] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0049] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0050] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0051] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0053] <Vibration Device>

[0054] Figure 1 This is a schematic diagram of a vibration device provided according to an embodiment of the present disclosure.

[0055] like Figure 1 As shown, the vibration device 100 may include a first linear motor LRA1, a second linear motor LRA2, a connecting component 110, and a first rotating component 120.

[0056] The first linear motor LRA1 and the second linear motor LRA2 are respectively disposed at both ends of the connecting component. The vibration directions of the first linear motor LRA1 and the second linear motor LRA2 are parallel and perpendicular to the axial direction of the connecting component 110.

[0057] The first rotating component 120 is fixed on the connecting component 110. The first rotating component 120 is used to drive the first linear motor LRA1 and the second linear motor LRA2 to rotate around the axis of the connecting component 110.

[0058] In this embodiment, the connecting member 110 can be of any shape. In one example, the connecting member 110 can be a rod-shaped member.

[0059] Linear motors achieve tactile vibration through the periodic reciprocating motion of an internal oscillator. When the linear motor outputs... Figure 2 When the directional acceleration waveforms shown have asymmetrical amplitudes in the positive and negative directions, the magnitudes of the forces perceived by the human hand in the positive and negative directions are also different. After the forces in the two directions are superimposed, the human hand can feel tactile sensation in one direction, namely the directional tactile sensation in the first direction, which is the direction in which the greater force is located. Figure 2 The horizontal axis represents time, and the vertical axis represents acceleration.

[0060] Furthermore, it can be based on Figure 2 The acceleration waveform shown is the target. The voltage waveform required to achieve the acceleration waveform is calculated based on the specific model parameters of the linear motor. This is the directional drive waveform designed for the linear motor.

[0061] The first linear motor LRA1 and the second linear motor LRA2 are driven in phase, that is, the first linear motor LRA1 and the second linear motor LRA2 are driven by directional driving waveforms with the same phase, so that the two linear motors produce the same directional tactile sensation, and the directional tactile sensation is superimposed, so that the vibration device can realize the directional tactile sensation of translation along the first direction.

[0062] The first linear motor LRA1 and the second linear motor LRA2 are driven in opposite phases, that is, the first linear motor LRA1 and the second linear motor LRA2 are driven by directional driving waveforms with opposite phases, so that the two linear motors produce opposite directional tactile sensations, enabling the vibration device to achieve a directional tactile sensation of rotation around the first axis.

[0063] In such Figure 1 In the vibration device 100 shown, the x-axis, y-axis, and z-axis can be mutually perpendicular. The axial direction of the connecting component can be the x-axis direction, the first direction can be the z-axis direction, and the first axis can be the y-axis direction. The two linear motors and the connecting component form an I-shaped structure. In this embodiment, the vibration device can be mounted on electronic devices such as game controllers or vehicle steering wheels. When a user operates the electronic device with both hands, their hands can be held on the mounting positions of the two linear motors respectively. When a user operates the electronic device with one hand, their hand can be held on the connecting component.

[0064] The first rotating component 120 may consist of a rotary motor SM (usually a stepper motor) and a necessary transmission mechanism 121. The rotary motor SM may be fixed inside the connecting component 110. When the rotary motor SM is powered on, it drives the transmission mechanism 121 to rotate within a range of at least 90 degrees, thereby driving the first linear motor LRA1 and the second linear motor LRA2 to rotate around the axis of the connecting component 110.

[0065] The two ends of the connecting component 110 are respectively connected to the first linear motor LRA1 and the second linear motor LRA2. Therefore, the vibration direction of the first linear motor LRA1 and the second linear motor LRA2 can be adjusted at any angle within a 360-degree range in the yOz plane by means of the first rotating component 120.

[0066] Based on this, by combining in-phase and out-of-phase driving of the first linear motor LRA1 and the second linear motor LRA2, the vibration device 100 can achieve multi-dimensional directional tactile sensation. When the vibration device is applied to electronic devices such as gaming devices, virtual reality devices, or augmented reality devices, these directional tactile sensations can be used to simulate scenarios such as movement, turning, and unidirectional force in electronic devices, enriching the tactile experience of electronic devices.

[0067] For example, when the first rotating component 120 adjusts the vibration direction of the first linear motor LRA1 and the second linear motor LRA2 to be parallel to the z-axis, such as Figure 1 As shown, the vibration device can realize directional tactile sensation by translation along the positive or negative z-axis, and directional tactile sensation by rotation around the y-axis clockwise or counterclockwise.

[0068] For example, when the first rotating component 120 adjusts the vibration direction of the first linear motor LRA1 and the second linear motor LRA2 to be parallel to the y-axis, such as... Figure 3 As shown, the vibration device can realize directional tactile sensation of translation along the positive or negative y-axis, and directional tactile sensation of rotation around the z-axis clockwise or counterclockwise.

[0069] In the embodiments of this disclosure, the first rotating component enables the reuse of two linear motors, thereby allowing the vibration device to achieve directional tactile sensations of translation in multiple dimensions and rotation around multiple dimensions, providing a tactile experience completely different from existing vibrations. Furthermore, it can also reduce the cost and weight of the vibration device.

[0070] In one embodiment of this disclosure, such as Figure 1As shown, the vibration device 100 may further include a first spherical housing 130 and a second spherical housing 140. A first linear motor LRA1 may be disposed in the first spherical housing 130, and a second linear motor LRA2 may be disposed in the second spherical housing 140.

[0071] In one embodiment of this disclosure, the vibration device may further include a second rotating component and a third rotating component. The second rotating component is used to drive the first linear motor to rotate within the first spherical housing, so that the vibration direction of the first linear motor changes in three-dimensional space. The third rotating component is used to drive the second linear motor to rotate within the second spherical housing, so that the vibration direction of the second linear motor changes in three-dimensional space.

[0072] In this embodiment, both the second and third rotating components can rotate at least 90 degrees along each of the three axes. The second rotating component allows the vibration direction of the first linear motor LRA1 to be adjusted at any angle within three-dimensional space. The third rotating component allows the vibration direction of the second linear motor LRA2 to be adjusted at any angle within three-dimensional space.

[0073] For example, in the initial state, the vibration direction of the first linear motor LRA1 and the second linear motor LRA2 is parallel to the y-axis, and the axis of the connecting component is parallel to the x-axis. After the second rotating component is powered on, it drives the first linear motor LRA1 to rotate, and the vibration direction of the first linear motor LRA1 changes to be parallel to the z-axis. After the third rotating component is powered on, it drives the second linear motor LRA2 to rotate, and the vibration direction of the second linear motor LRA2 changes to be parallel to the z-axis. The axis of the connecting component is parallel to the x-axis, so that the vibration device can realize the directional tactile sensation of translation along the positive or negative z-axis, as well as the directional tactile sensation of rotation around the y-axis clockwise or counterclockwise. When the second rotating component is energized, it drives the first linear motor LRA1 to rotate, changing the vibration direction of the first linear motor LRA1 to be parallel to the x-axis. When the third rotating component is energized, it drives the second linear motor LRA2 to rotate, changing the vibration direction of the second linear motor LRA2 to be parallel to the x-axis. The axis of the connecting component is parallel to the y-axis, enabling the vibration device to achieve directional tactile sensations of translation along the positive or negative x-axis, and directional tactile sensations of clockwise or counterclockwise rotation around the z-axis. Similarly, when the second rotating component is energized, it drives the first linear motor LRA1 to rotate, changing the vibration direction of the first linear motor LRA1 to be parallel to the y-axis. The third rotating component, when energized, drives the second linear motor LRA2 to rotate, changing the vibration direction of the second linear motor LRA2 to be parallel to the y-axis. The axis of the connecting component is parallel to the z-axis, enabling the vibration device to achieve directional tactile sensations of translation along the positive or negative y-axis, and directional tactile sensations of clockwise or counterclockwise rotation around the x-axis.

[0074] The rotating component in this embodiment allows for adjustment of the vibration direction of the two linear motors in any direction in three-dimensional space. Based on this, by combining in-phase and out-of-phase driving of the first and second linear motors, the vibration device can achieve directional tactile sensation of translation in any direction in three-dimensional space, as well as directional tactile sensation of rotation around any direction in three-dimensional space.

[0075] <Driver Circuit>

[0076] This disclosure also provides a drive circuit for a vibration device. The vibration device includes a first linear motor, a second linear motor, a connecting component, and a first rotating component. The first and second linear motors are respectively disposed at both ends of the connecting component. The vibration directions of the first and second linear motors are parallel and perpendicular to the axial direction of the connecting component. The first rotating component is fixed to the connecting component and is used to drive the connecting component to rotate around its axis, thereby causing the vibration directions of the first and second linear motors to rotate around the axis of the connecting component.

[0077] The drive circuit includes a first drive device and a second drive device.

[0078] The first drive device is configured to control the rotation of the first rotating component to change the vibration direction of the first linear motor and the second linear motor in a first plane, wherein the first plane is a plane perpendicular to the axis of the connecting component.

[0079] The second driving device is configured to drive the first linear motor and the second linear motor in phase to make the vibration device translate along the first direction; or, to drive the first linear motor and the second linear motor in opposite phases to make the vibration device rotate around the first axis. The first direction is the vibration direction of the first linear motor, and the first axis is perpendicular to the axis of the connecting component and also perpendicular to the first direction.

[0080] The first rotating component 120 allows the vibration direction of the first linear motor LRA1 and the second linear motor LRA2 to be adjusted at any angle within a 360-degree range in the yOz plane.

[0081] The first linear motor LRA1 and the second linear motor LRA2 are driven in phase, that is, the first linear motor LRA1 and the second linear motor LRA2 are driven by directional driving waveforms with the same phase, so that the two linear motors produce the same directional tactile sensation, and the directional tactile sensation is superimposed, so that the vibration device can realize the directional tactile sensation of translation along the first direction.

[0082] The first linear motor LRA1 and the second linear motor LRA2 are driven in opposite phases, that is, the first linear motor LRA1 and the second linear motor LRA2 are driven by directional driving waveforms with opposite phases, so that the two linear motors produce opposite directional tactile sensations, enabling the vibration device to achieve a directional tactile sensation of rotation around the first axis.

[0083] In the embodiments of this disclosure, the first rotating component enables the reuse of two linear motors, thereby allowing the vibration device to achieve directional tactile sensations of translation in multiple dimensions and rotation around multiple dimensions, providing a tactile experience completely different from existing vibrations. Furthermore, it can also reduce the cost and weight of the vibration device.

[0084] In one embodiment of this disclosure, the vibration device further includes a second rotating component and a third rotating component. The drive circuit may further include a third drive device and a fourth drive device, wherein the third drive device is configured to control the rotation of the second rotating component to change the vibration direction of the first linear motor in three-dimensional space; and the fourth drive device is configured to control the rotation of the third rotating component to change the vibration direction of the second linear motor in three-dimensional space.

[0085] The second rotating component allows the vibration direction of the first linear motor LRA1 to be adjusted at any angle within three-dimensional space. The third rotating component allows the vibration direction of the second linear motor LRA2 to be adjusted at any angle within three-dimensional space.

[0086] In this embodiment, the second and third rotating components enable the vibration device to achieve directional tactile sensation of translation in any direction within three-dimensional space, as well as directional tactile sensation of rotation around any direction within three-dimensional space.

[0087] In one embodiment of this disclosure, such as Figure 4 As shown, the second driving device 4000 may include a first signal output module 4100, a first control module 4200, a non-inverting output module 4300, and an inverting output module 4400.

[0088] The first signal output module 4100 is used to output a first drive signal to the first linear motor.

[0089] The first control module 4200 is used to control the in-phase output module 4300 to work when driving the first linear motor LRA1 and the second linear motor LRA2 in the same phase; and to control the inverted output module 4400 to work when driving the first linear motor LRA1 and the second linear motor LRA2 in opposite phases.

[0090] The in-phase output module 4300 is used to output the first drive signal to the second linear motor.

[0091] The inverting output module 4400 is used to invert the first drive signal to obtain a second drive signal and output the second drive signal to the second linear motor.

[0092] In this embodiment, both the first driving signal and the second driving signal are directional driving waveforms.

[0093] The first control module 4200 can control at most one of the non-inverting output module 4300 and the inverting output module 4400 to operate. Specifically, the first control module 4200 can control the non-inverting output module 4300 to operate and control the inverting output module 4400 to not operate; the first control module 4200 can also control the non-inverting output module 4300 to not operate and control the inverting output module 4400 to operate; or the first control module 4200 can control both the non-inverting output module 4300 and the inverting output module 4400 to not operate.

[0094] When the first control module controls the in-phase output module to work, the second drive device 4000 simultaneously drives the first linear motor LRA1 and the second linear motor LRA2 through the first drive signal. That is, the first linear motor LRA1 and the second linear motor LRA2 are driven in phase, which can make the first linear motor LRA1 and the second linear motor LRA2 produce the same directional tactile sensation, realize the superposition of directional tactile sensation, and enable the vibration device to realize the directional tactile sensation of translation along the first direction.

[0095] When the first control module controls the inverting output module to work, the second drive device 4000 drives the first linear motor LRA1 through the first drive signal and drives the second linear motor LRA2 through the second drive signal. That is, it drives the first linear motor LRA1 and the second linear motor LRA2 in reverse phase, which can make the first linear motor LRA1 and the second linear motor LRA2 produce opposite directional tactile sensations, so that the vibration device can realize the directional tactile sensation of rotation around the first axis.

[0096] Specifically, the first end of the first signal output module 4100 is connected to the first end of the first linear motor LRA1, and the second end of the first signal output module 4100 is connected to the second end of the first linear motor LRA1.

[0097] Furthermore, such as Figure 5 As shown, the in-phase output module 4300 includes a first switch S1 and a second switch S2. The first switch S1 is connected between the first terminal of the first signal output module 4100 and the first terminal of the second linear motor LRA2, and the second switch S2 is connected between the second terminal of the first signal output module 4100 and the second terminal of the second linear motor LRA2. The control terminals of both the first switch S1 and the second switch S2 are connected to the first control module 4200.

[0098] When the first control module 4200 controls the non-inverting output module 4300 to operate, both the first switch S1 and the second switch S2 are turned on. When the first control module 4200 controls the non-inverting output module 4300 to not operate, both the first switch S1 and the second switch S2 are turned off.

[0099] In this embodiment, the first switch S1 and the second switch S2 can both be provided by transistors, specifically triodes or field-effect transistors.

[0100] Furthermore, such as Figure 5 As shown, the inverting output module 4400 includes a third switch S3 and a fourth switch S4. The third switch S3 is connected between the first terminal of the first signal output module 4100 and the second terminal of the second linear motor LRA2, and the fourth switch S4 is connected between the second terminal of the first signal output module 4100 and the first terminal of the second linear motor LRA2.

[0101] When the first control module 4200 controls the inverting output module 4400 to operate, both the third switch S3 and the fourth switch S4 are turned on. When the first control module 4200 does not control the inverting output module 4400 to operate, both the third switch S3 and the fourth switch S4 are turned off.

[0102] In this embodiment, the third switch S3 and the fourth switch S4 can both be provided by transistors, specifically triodes or field-effect transistors.

[0103] In this embodiment, when driving the first linear motor LRA1 and the second linear motor LRA2 in phase, the first switch S1 and the second switch S2 can be turned on, and the third switch S3 and the fourth switch S4 can be turned off, so that the first linear motor LRA1 and the second linear motor LRA2 are connected in phase and in parallel between the first terminal and the second terminal of the first signal output module 4100.

[0104] When driving the first linear motor LRA1 and the second linear motor LRA2 in reverse phase, the first switch S1 and the second switch S2 can be turned off, and the third switch S3 and the fourth switch S4 can be turned on, so that the first linear motor LRA1 and the second linear motor LRA2 are connected in parallel in reverse phase between the first terminal and the second terminal of the first signal output module 4100.

[0105] By using the second driving device in this embodiment to drive the vibration device, the first linear motor and the second linear motor can share the first signal output module, which can reduce the hardware cost of the second driving device.

[0106] Based on this embodiment, if the vibration device also includes other linear motors, the second drive device may further include an in-phase output module and an out-of-phase output module corresponding to each linear motor.

[0107] In another embodiment of this disclosure, such as Figure 6 As shown, the second drive device 6000 includes a second signal output module 6100, a third signal output module 6200, a second control module 6300, and a selection module 6400 corresponding to each linear motor.

[0108] The second signal output module 6100 is used to output the third drive signal.

[0109] The third signal output module 6200 is used to output a fourth driving signal, wherein the third driving signal and the fourth driving signal are out of phase.

[0110] The second control module 6600 is used to control the state of the gating module 6400.

[0111] The gating module 6400 is used to transmit the third drive signal to the corresponding linear motor in the first state and the fourth drive signal to the corresponding linear motor in the second state.

[0112] When the second control module controls the gating module 5400 corresponding to the first linear motor LRA1 and the gating module 5400 corresponding to the second linear motor LRA2 to be in the first state, the drive circuit 3000 drives the first linear motor LRA1 and the second linear motor LRA2 simultaneously through the third drive signal, that is, drives the first linear motor LRA1 and the second linear motor LRA2 in phase, which can make the first linear motor LRA1 and the second linear motor LRA2 produce the same directional tactile sensation, realize the superposition of directional tactile sensation, and enable the vibration device to realize the directional tactile sensation of translation along the first direction. When the second control module controls the gating module 5400 corresponding to the first linear motor LRA1 to be in the first state and the gating module 5400 corresponding to the second linear motor LRA2 to be in the second state, the drive circuit 3000 drives the first linear motor LRA1 through the third drive signal and drives the second linear motor LRA2 through the fourth drive signal. That is, it drives the first linear motor LRA1 and the second linear motor LRA2 in opposite phases, which can make the first linear motor LRA1 and the second linear motor LRA2 produce opposite directional tactile sensations, so that the vibration device can realize the directional tactile sensation of rotation around the first axis.

[0113] Specifically, such as Figure 7As shown, the gating module 6300 includes a fifth switch S6 and a sixth switch S6. The fifth switch S6 is connected between the first end of the second signal output module 6100 and the first end of the corresponding linear motor. The sixth switch S6 is connected between the first end of the third signal output module 6200 and the first end of the corresponding linear motor. The second ends of the second signal output module 6100 and the third signal output module 6200 are both connected to the second end of the corresponding linear motor.

[0114] In this embodiment, when driving the first linear motor LRA1 and the second linear motor LRA2 in phase, the fifth switch S5 corresponding to the first linear motor LRA1 can be turned on and the sixth switch S6 corresponding to the second linear motor LRA2 can be turned off, so that the pair of linear motors are connected in parallel in phase between the first and second terminals of the second signal output module 6100. When driving the first linear motor LRA1 and the second linear motor LRA2 in opposite phase, the fifth switch S5 corresponding to the first linear motor LRA1 can be turned on and the sixth switch S6 corresponding to the second linear motor LRA2 can be turned on, so that one of the pair of linear motors is connected between the first and second terminals of the second signal output module 6100, and the other is connected between the first and second terminals of the third signal output module 6200.

[0115] By using the second driving device in this embodiment to drive the vibration device, the control logic of the second driving device can be simple and clear, easy to implement, and save the number of switches.

[0116] Based on this embodiment, if the vibration device also includes other linear motors, the second drive device may further include a gating module corresponding to each linear motor.

[0117] In another embodiment of this disclosure, the second driving device may further include a DC power supply DC and an H-bridge driving circuit corresponding to each linear motor, the H-bridge driving circuit being connected between the DC power supply and the corresponding linear motor.

[0118] When the first linear motor LRA1 and the second linear motor LRA2 are driven in phase, the H-bridge drive circuits corresponding to the first linear motor LRA1 and the second linear motor LRA2 output drive signals with the same phase. When the first linear motor LRA1 and the second linear motor LRA2 are driven in opposite phases, the H-bridge drive circuits corresponding to the first linear motor LRA1 and the second linear motor LRA2 output drive signals with opposite phases.

[0119] like Figure 8As shown, the H-bridge drive circuit may include a third control module 1211 and an H-bridge circuit. The H-bridge circuit includes a seventh switch S7, an eighth switch S4, a ninth switch S5, and a tenth switch S10. The control terminals of the seventh switch S7, the eighth switch S4, the ninth switch S5, and the tenth switch S10 are all connected to the third control module 1211. The seventh switch S7 is connected between the positive terminal of the DC power supply and the first terminal of the corresponding linear motor. The eighth switch S4 is connected between the first terminal of the corresponding linear motor and the negative terminal of the DC power supply. The ninth switch S5 is connected between the positive terminal of the DC power supply and the second terminal of the corresponding linear motor. The tenth switch S10 is connected between the second terminal of the corresponding linear motor and the negative terminal of the DC power supply.

[0120] In this embodiment, the third control module 1211 performs PWM drive control on the seventh switch S7, the eighth switch S4, the ninth switch S5 and the tenth switch S10 in the H-bridge circuit, so that the H-bridge circuit can output a first drive signal or a second drive signal, so that the vibration device can realize the corresponding directional tactile sensation.

[0121] In this embodiment, the H-bridge circuit corresponding to each linear motor can be controlled independently, and the second drive device only requires a DC power supply, resulting in low hardware cost.

[0122] <Electronic Devices>

[0123] This disclosure also provides an electronic device that may include the vibration device and the drive circuit described in any of the foregoing embodiments.

[0124] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of the invention is defined by the appended claims.

Claims

1. A vibration device, characterized in that, The vibration device includes a first linear motor, a second linear motor, a connecting component, and a first rotating component. The first linear motor and the second linear motor are respectively disposed at both ends of the connecting component. The vibration directions of the first linear motor and the second linear motor are parallel and perpendicular to the axial direction of the connecting component. The first rotating component is fixed to the connecting component, and the first rotating component is used to drive the vibration direction of the first linear motor and the second linear motor to rotate around the axis of the connecting component; The vibration device further includes a first spherical shell and a second spherical shell, wherein the first linear motor is disposed inside the first spherical shell and the second linear motor is disposed inside the second spherical shell; The vibration device further includes a second rotating component and a third rotating component. The second rotating component is used to drive the first linear motor to rotate within the first spherical shell, so that the vibration direction of the first linear motor changes in three-dimensional space. The third rotating component is used to drive the second linear motor to rotate within the second spherical shell, so that the vibration direction of the second linear motor changes in three-dimensional space.

2. A driving circuit for a vibration device, characterized in that, The vibration device includes a first linear motor, a second linear motor, a connecting component, and a first rotating component. The first linear motor and the second linear motor are respectively disposed at both ends of the connecting component. The vibration directions of the first linear motor and the second linear motor are parallel and perpendicular to the axial direction of the connecting component. The first rotating component is fixed on the connecting component. The driving circuit includes a first driving device and a second driving device; The first driving device is configured to control the rotation of the first rotating component to change the vibration direction of the first linear motor and the second linear motor in a first plane, wherein the first plane is a plane perpendicular to the axis of the connecting component; The second driving device is configured to drive the first linear motor and the second linear motor in phase to make the vibration device translate along the first direction; or, to drive the first linear motor and the second linear motor in opposite phase to make the vibration device rotate about the first axis. Wherein, the first direction is the vibration direction of the first linear motor, and the first axis is perpendicular to the axis of the connecting component and perpendicular to the first direction.

3. The driving circuit according to claim 2, characterized in that, The second driving device includes a first signal output module, a first control module, a non-inverting output module, and an inverting output module. The first signal output module is used to output a first drive signal to the first linear motor; The first control module is used to control the in-phase output module to work when the first linear motor and the second linear motor are driven in phase. When driving the first linear motor and the second linear motor in reverse phase, the inverting output module is controlled to operate; The in-phase output module is used to output the first drive signal to the second linear motor; The inverting output module is used to invert the first drive signal to obtain a second drive signal, and output the second drive signal to the second linear motor.

4. The driving circuit according to claim 3, characterized in that, The first end of the first signal output module is connected to the first end of the first linear motor, and the second end of the first signal output module is connected to the second end of the first linear motor.

5. The driving circuit according to claim 4, characterized in that, The in-phase output module includes a first switch and a second switch. The first switch is connected between a first end of the first signal output module and a first end of the second linear motor, and the second switch is connected between a second end of the first signal output module and a second end of the second linear motor. When the first control module controls the in-phase output module to work, both the first switch and the second switch are turned on.

6. The driving circuit according to claim 3, characterized in that, The inverting output module includes a third switch and a fourth switch. The third switch is connected between the first end of the first signal output module and the second end of the second linear motor, and the fourth switch is connected between the second end of the first signal output module and the first end of the second linear motor. When the first control module controls the inverting output module to work, it controls both the third switch and the fourth switch to be turned on.

7. The driving circuit according to claim 2, characterized in that, The second drive device includes a second signal output module, a third signal output module, a second control module, and a selection module corresponding to each linear motor. The second signal output module is used to output the third drive signal; The third signal output module is used to output a fourth driving signal, wherein the third driving signal and the fourth driving signal are out of phase; The second control module is used to control the state of the gating module; The gating module is used to transmit the third drive signal to the corresponding linear motor in a first state and the fourth drive signal to the corresponding linear motor in a second state.

8. The driving circuit according to claim 2, characterized in that, The second drive device includes a DC power supply and an H-bridge drive circuit corresponding to each linear motor, wherein the H-bridge drive circuit is connected between the DC power supply and the corresponding linear motor. When the first linear motor and the second linear motor are driven in phase, the H-bridge drive circuit corresponding to the first linear motor and the H-bridge drive circuit corresponding to the second linear motor output drive signals with the same phase. When the first linear motor and the second linear motor are driven in opposite phase, the H-bridge drive circuits corresponding to the first linear motor and the second linear motor output drive signals with opposite phases.

9. The driving circuit according to claim 2, characterized in that, The vibration device further includes a second rotating component and a third rotating component. The driving circuit includes a third driving device and a fourth driving device; The third driving device is configured to control the rotation of the second rotating component to change the vibration direction of the first linear motor in three-dimensional space; The fourth drive device is configured to control the rotation of the third rotating component to change the vibration direction of the second linear motor in three-dimensional space.

10. An electronic device, characterized in that, Includes the drive circuit according to any one of claims 2 to 9.

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