WO2023042700A1 - Dispositif et procédé de présentation tactile - Google Patents

Dispositif et procédé de présentation tactile Download PDF

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Publication number
WO2023042700A1
WO2023042700A1 PCT/JP2022/033282 JP2022033282W WO2023042700A1 WO 2023042700 A1 WO2023042700 A1 WO 2023042700A1 JP 2022033282 W JP2022033282 W JP 2022033282W WO 2023042700 A1 WO2023042700 A1 WO 2023042700A1
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WIPO (PCT)
Prior art keywords
plate
divided
actuator
presentation device
frequency
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Application number
PCT/JP2022/033282
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English (en)
Japanese (ja)
Inventor
優典 佐藤
尚 永井
Original Assignee
ヤマハ株式会社
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Filing date
Publication date
Application filed by ヤマハ株式会社 filed Critical ヤマハ株式会社
Publication of WO2023042700A1 publication Critical patent/WO2023042700A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer

Definitions

  • the present invention provides a tactile presentation device and method
  • a tactile sense presentation device that presents a tactile sense by vibrating a vibrating member.
  • a rotating body is vibrated, and when a user touches a rotatable plate-shaped operating part, the operating part comes into contact with the rotating body, and vibration from the rotating body is transmitted to the user via the operating part.
  • Patent Document 2 discloses that a relaxation sound is superimposed on acoustic noise, and a sound that is in phase opposite to the synthesized sound is generated and output to mute the synthesized sound, so that the user can perceive the synthesized sound. restrain from being
  • Patent Document 2 it is necessary to separately provide a mechanism for suppressing acoustic noise caused by the vibration for presenting the tactile sensation, in addition to the vibration for presenting the tactile sensation. This complicates the configuration.
  • One object of the present invention is to provide a tactile sense presentation device capable of suppressing sound caused by vibrations for tactile sense presentation while avoiding complication of the configuration.
  • a plate-shaped portion that presents a tactile sensation to a user by vibrating; at least one actuator that is arranged on the plate-shaped portion and causes the plate-shaped portion to vibrate when driven; a control unit that drives the actuator at a frequency that vibrates the plate-like portion in a divided vibration mode in which each of a plurality of divided regions separated by nodes in vibration vibrates, wherein the control unit drives the actuator in the divided vibration mode. but drives the actuators so that the actuators are in split vibration modes in which the actuators are located in at least one of the split regions.
  • FIG. 1 is a block diagram illustrating the configuration of a playback system
  • FIG. 1 is a longitudinal sectional view illustrating the structure of DJ equipment
  • FIG. It is a back view of a rotation drive mechanism.
  • 4 is a schematic plan view of a plate-like portion
  • FIG. FIG. 4 is a schematic plan view of a plate-like portion that vibrates in a first split vibration mode
  • FIG. 5 is a schematic plan view of a plate-like portion that vibrates in a second split vibration mode
  • FIG. 11 is a schematic plan view of a plate-like portion that vibrates in a third divided vibration mode
  • FIG. 3 is a schematic diagram of a plate-like portion having actuators arranged on its front and back surfaces
  • FIG. 11 is a schematic perspective view of another tactile presentation device;
  • FIG. 1 is a block diagram illustrating the configuration of a playback system to which a haptic presentation device according to one embodiment of the present invention is applied.
  • This playback system 1 has a terminal device 100 and DJ equipment 200 as a tactile presentation device.
  • FIG. 2 is a longitudinal sectional view illustrating the structure of the DJ equipment 200.
  • DJ equipment 200 is a DJ controller (an example of audio equipment) that receives an operation by a user (DJ).
  • the DJ equipment 200 has a main body section 201 and a DJ operation section 202 .
  • Main unit 201 has detection mechanism 60 , rotation drive mechanism 40 and power transmission unit 34 .
  • the DJ operation unit 202 has a control unit 32, a power receiving unit 35, a communication I/F (interface) 36, and actuators AC (AC1 to AC4).
  • the control section 32 controls each section of the DJ equipment 200 .
  • the control unit 32 has a CPU, ROM, and RAM (none of which are shown).
  • the CPU implements various controls by loading programs stored in the ROM into the RAM and executing the programs.
  • the communication I/F 36 communicates with external devices including the terminal device 100 wirelessly or by wire. Bluetooth (registered trademark), Wifi (registered trademark), FM transmitter, etc. can be cited as a method of the communication I/F 36, but the method is not limited.
  • the terminal device 100 controls the reproduction of music according to the user's operation of the DJ equipment 200 .
  • an information terminal such as a smart phone, tablet terminal, or personal computer is employed as the terminal device 100 .
  • the terminal device 100 has a control device 11 , a storage device 12 and a playback device 13 .
  • the storage device 12 and the playback device 13 may be built in the DJ equipment 200 .
  • the control device 11 is, for example, one or more processing circuits such as a CPU, and controls each element of the terminal device 100 .
  • the storage device 12 stores programs executed by the control device 11 and various data used by the control device 11 .
  • the various types of data referred to here include a music file representing the performance sound of a piece of music.
  • the main body part 201 has a hollow housing 70 .
  • a circular opening 71 is formed in the upper portion of the housing 70 .
  • Rotation drive mechanism 40 and detection mechanism 60 are housed inside housing 70 .
  • Body portion 201 has rotating body 21 and shaft member 23 .
  • the rotating body 21 is a turntable installed so as to substantially close the opening 71 of the housing 70, and is a disk-shaped structure (platter).
  • the rotating body 21 is rotatable around the rotation axis O.
  • a circular through hole H is formed in the center of the rotating body 21 .
  • the shaft member 23 is a cylindrical member.
  • the shaft member 23 passes through the through hole H of the rotating body 21 . Therefore, the central axis of the shaft member 23 and the rotation axis O of the rotating body 21 match.
  • the inner peripheral surface of the through hole H faces the outer peripheral surface of the shaft member 23 with a predetermined gap. That is, the rotating body 21 is not connected to the shaft member 23 .
  • the shaft member 23 is installed on the bottom surface portion 72 of the housing 70 via the buffer 73 .
  • a support structure 74 is installed inside the housing 70 .
  • the support structure 74 is a structure that rotatably supports the shaft member 23 .
  • Support structure 74 comprises a first portion 741 and a second portion 742 .
  • a second portion 742 is positioned between the first portion 741 and the bottom portion 72 .
  • the first portion 741 is a cylindrical portion.
  • the inner diameter of the first portion 741 is the same as the outer diameter of the shaft member 23 . Therefore, the shaft member 23 can rotate while being in contact with the inner peripheral surface of the first portion 741 .
  • the plate-like portion 30 is fixed to the upper portion of the shaft member 23 by the fixing portion 24 .
  • the support structure 74 serves as a support portion that rotatably supports the plate-like portion 30 via the shaft member 23 .
  • the second portion 742 is a cylindrical portion formed with a larger diameter than the first portion 741 .
  • a second portion 742 is fixed to the bottom portion 72 of the housing 70 .
  • a detection mechanism 60 is installed inside the second portion 742 .
  • the detection mechanism 60 has a light shield 61 and a detector 62 .
  • the light shielding body 61 is a disk-shaped structure fixed to the shaft member 23 and made of a light shielding material.
  • a plurality of cutouts (slits) 611 are formed at intervals in the periphery of the light shielding body 61 .
  • Detector 62 is an optical sensor including light emitting element 621 and light receiving element 622 .
  • the light-emitting element 621 and the light-receiving element 622 face each other with the peripheral portion of the light shielding body 61 interposed therebetween.
  • the light receiving element 622 outputs an operation signal Z according to the amount of light received. That is, the detection mechanism 60 generates an operation signal Z representing the direction and angle of rotation of the DJ operation unit 202 .
  • a bearing 75 is interposed between the support structure 74 and the rotor 21 for smoothly rotating the rotor 21 with respect to the support structure 74 .
  • the bearing 75 is, for example, a ball bearing and is installed concentrically with the rotating body 21 .
  • Rotating body 21 is supported by support structure 74 via bearings 75 . Since the rotor 21 and the bearing 75 are not fixed, the rotor 21 can move in the direction of the rotation axis O between a position in contact with the bearing 75 and a position away from the bearing 75 .
  • a buffer 76 is interposed between the rotor 21 and the bearing 75 .
  • the buffer 76 is an annular member installed concentrically with the rotating body 21, and is made of an elastic material such as rubber.
  • a dampener 76 may be installed between the support structure 74 and the bearing 75 .
  • a wiring board 77 is installed inside the housing 70 . The wiring board 77 is supported by the support structure 74 .
  • FIG. 3 is a back view of the rotation drive mechanism 40.
  • the rotation drive mechanism 40 is a motor having a support member 41 , magnets 43 and a plurality of coils 42 .
  • the support member 41 is installed on the wiring board 77 .
  • the support member 41 is an annular structure made of, for example, a non-magnetic material.
  • a plurality of protrusions 411 are formed on the outer peripheral surface of the support member 41 at intervals in the circumferential direction.
  • Each of the coils 42 is a conductive wire wound around one protrusion 411 . That is, a plurality of coils 42 are installed at intervals in the circumferential direction.
  • a magnet 43 is installed on the rotating body 21 .
  • the magnet 43 is an annular permanent magnet surrounding the multiple coils 42 .
  • the configuration of the rotation drive mechanism 40 is not limited to the illustrated one.
  • a pulley may be provided on the rotating body 21 concentrically with the rotating body 21, and a drive belt may be hung between the drive shaft of a separately provided motor and the pulley. Then, the rotating body 21 may be rotationally driven by the driving force of the motor via the drive belt and the pulley.
  • the DJ operation section 202 has a spacer 33, a plate-shaped section 30 and a fixing section 24.
  • a control board 31 is arranged on the fixed portion 24 .
  • the control board 31 includes a control section 32 (FIG. 1).
  • the shaft member 23 penetrates the spacer 33 .
  • the spacer 33 is set on the mounting surface 21 a of the rotating body 21 .
  • the spacer 33 and the installation surface 21a of the rotating body 21 are not fixed, and have a moderate amount of friction so that they are slidable.
  • the plate-like portion 30 is formed in a disc shape and arranged on the installation surface 21 a of the rotating body 21 with a spacer 33 interposed therebetween.
  • the plate-like portion 30 and the spacer 33 are fixed.
  • the spacer 33 has a thickness of about 0.1 to 5 mm so that the plate-like portion 30 does not come into direct contact with the rotating body 21, and helps the plate-like portion 30 to resonate properly.
  • the plate-like portion 30 is fixed near the upper end portion of the shaft member 23 . Specifically, the plate-like portion 30 is fixed to the shaft member 23 by the fixing portion 24 with the rear surface 30 b of the plate-like portion 30 facing the installation surface 21 a of the rotating body 21 .
  • the rotating body 21 and the plate-like portion 30 are arranged concentrically.
  • the plate-like portion 30 is rotatable around the rotation axis O integrally with the shaft member 23 .
  • a surface 30a (a surface not facing the rotating body 21) of the plate-like portion 30 is operated by a user's fingers.
  • the plate-like part 30 vibrates in the Z direction to present a tactile sensation to the user who is in contact with the surface 30a.
  • the Z direction is parallel to the rotation axis O direction.
  • the surface 30a serves as an operation surface as well as a presentation surface that presents a tactile sensation.
  • the spacer 33 and the plate-like portion 30 rotate together with the rotating body 21 due to the frictional force acting between the spacer 33 and the installation surface 21 a of the rotating body 21 .
  • the user can rotate the plate-like portion 30 around the rotation axis O by touching the surface 30a of the plate-like portion 30 with a finger and rotating it.
  • the spacer 33 slides on the rotating body 21, and the plate-like portion 30 rotates without interlocking with the rotating body 21, or rotates independently.
  • a power receiving unit 35 ( FIG. 1 ) is provided inside the spacer 33 .
  • the power receiving unit 35 is arranged on the side of the spacer 33 facing the installation surface 21 a of the rotating body 21 .
  • the power transmission unit 34 ( FIG. 1 ) is provided inside the rotating body 21 .
  • the power transmission unit 34 is arranged on the side of the rotating body 21 facing the spacer 33 .
  • the power transmission unit 34 wirelessly transmits power for driving the actuators AC1 to AC4.
  • the power receiving unit 35 receives power transmitted from the power transmitting unit 34 . Therefore, wireless power is supplied from the main unit 201 to the DJ operation unit 202 .
  • This wireless power supply is realized by the principle of electromagnetic induction, but the system is not limited.
  • the power received by the power receiving unit 35 is used, for example, as power for the control unit 32 to control the operations of the actuators AC1 to AC4.
  • This configuration eliminates the need for wiring between the rotor 21 and the plate-like portion 30, thereby increasing the degree of freedom in design. Note that the plate-like portion 30 and the spacer 33 may be formed integrally.
  • FIG. 4 is a schematic plan view of the plate-like portion 30.
  • the actuators AC1 to AC4 are arranged on the back surface 30b of the plate-like portion 30 and not arranged on the front surface 30a.
  • the actuators AC1 to AC4 are arranged at regular intervals in the circumferential direction around the rotation axis O, and are arranged clockwise in the order of actuators AC1, AC2, AC3 and AC4.
  • actuators AC will be collectively referred to as actuators AC.
  • a vibration motor, a linear vibrator, a piezoelectric vibrator, a piezoelectric actuator, or the like can be used for the actuator AC.
  • a deformable film-shaped piezoelectric element is employed.
  • a piezoelectric element using polyvinylidene fluoride (PVDF) or the like is employed as an organic piezoelectric actuator that is thin and less likely to be damaged by bending.
  • PVDF polyvinylidene fluoride
  • the actuator AC can be attached regardless of the surface shape of the attachment destination. For example, even if the surface shape of the pasting destination is a curved surface shape, it can be handled. Moreover, it contributes to designing the entire device thin. It is also possible to prevent damage to the actuator itself due to bending of the attachment destination.
  • the storage device 12 stores music files representing performance sounds of music.
  • the control device 11 controls the point of time (hereinafter referred to as "playback point") of the music file to be played back.
  • a sound signal Q representing a portion of the music file corresponding to the playback point (that is, a time series of samples) is supplied to the playback device 13 .
  • the reproduction device 13 supplies the acoustic signal Q supplied from the control device 11 to a sound emitting device such as a speaker or headphones to reproduce sound.
  • the operation signal Z output from the detection mechanism 60 is supplied to the control section 32 and transmitted to the control device 11 of the terminal device 100 through the communication I/F 36 .
  • the control device 11 moves the playback point of the music file backward in the direction of progress of time at a predetermined speed. Accordingly, the reproduction of the music represented by the music file progresses at a predetermined speed. Further, the control device 11 controls the position of the reproduction point according to the received operation signal Z.
  • the user can use the DJ equipment 200 to perform DJ operations such as scratching.
  • the acoustic signal Q is acquired from an external device through the communication I/F 36.
  • acoustic signal Q is obtained from terminal device 100 .
  • a function of transmitting the acoustic signal Q may be provided in the main unit 201 , and the control unit 32 may acquire the acoustic signal Q from the main unit 201 .
  • the control unit 32 generates a drive signal X, which is a current signal, in correspondence with the acquired acoustic signal Q.
  • the controller 32 generates the drive signal X when the level of the acoustic signal Q exceeds a predetermined threshold. That is, the control unit 32 converts the acoustic signal Q into a drive signal X having a frequency f (Hz) that generates a divided vibration mode (described later) suitable for haptic feedback, and supplies the drive signal X to the actuator AC. Then, vibration corresponding to the acoustic signal Q occurs in the plate-like portion 30 .
  • a user who touches and operates the plate-like portion 30 can not only hear the sound reproduced by the reproduction device 13, but also sense the vibration corresponding to the sound by touch.
  • the frequency of the acoustic signal Q and the frequency of the drive signal X do not need to match.
  • the acoustic signal Q may be used as timing for exciting vibration, and the frequency of the drive signal X may be determined from the viewpoint of haptic presentation. Therefore, the drive signal X does not have to be based on an acoustic signal.
  • the natural frequency (vibration mode) of the plate-like portion 30 may be determined from the viewpoint of tactile presentation.
  • the frequency f is set in the range of 0 ⁇ f ⁇ 500 (Hz). This is to enhance the tactile feedback effect of vibration by adopting a frequency range in which tactile cells react actively. From the viewpoint of further enhancing the tactile sensation presentation effect, it is desirable that the set frequency is higher than 100 Hz and lower than 300 Hz.
  • the vibration mode of the plate-like portion 30 caused by the actuator AC will be described.
  • Elements of the drive signal X generated by the controller 32 include the frequency Fx and the polarity (electrical phase).
  • the divided vibration mode is a vibration mode in which each of a plurality of divided regions separated by a node in vibration or an end portion of the plate-like portion 30 vibrates.
  • the control unit 32 controls the frequency Fx and polarity of the drive signal X so as to vibrate the plate-like portion 30 in one of a plurality of specific divided vibration modes. If the polarity is not variable, the control section 32 may drive the actuator AC with a fixed polarity and at a frequency f that vibrates the plate-like section 30 in one divided vibration mode.
  • FIGS. 5 to 7 examples of the form of the divided vibration mode will be described.
  • 5, 6, and 7 are schematic plan views of the plate-like portion 30 that vibrates in the first, second, and third split vibration modes.
  • hatched actuators are driven in a first phase
  • white actuators are driven in a second phase opposite to the first phase.
  • the control unit 32 drives the actuators AC arranged in the divided regions that vibrate in the same phase with signals of the same polarity. Further, the control unit 32 drives the actuators AC arranged in the divided regions that vibrate in opposite phases with signals of opposite polarities.
  • the drive signals X supplied to the actuators AC1 and AC3 and the actuators AC2 and AC4 may be connected so that they have opposite phases (the same applies hereinafter). .
  • the drive signal X for all the actuators AC can be made common.
  • actuators AC1 and AC3 are driven in the first phase
  • actuators AC2 and AC4 are driven in the second phase.
  • each of the four divided regions DV1 to DV4 vibrates in the vibration direction (the Z direction orthogonal to the planar direction of the plate-like portion 30).
  • Actuators AC are arranged at non-node positions (here, anti-nodes) of the divided regions DV1 to DV4.
  • the divided regions DV1 and DV3 vibrate in the same phase
  • the divided regions DV2 and DV4 vibrate in the opposite phase to the divided regions DV1 and DV3.
  • the following method can be considered for the tactile sense presentation method including the arrangement position of the actuator AC.
  • an operator determines a frequency f that realizes a desired one of a plurality of specific divided vibration modes, and arranges the actuator AC in a divided region in the desired divided vibration mode.
  • the operator investigates the divided regions and the frequencies f by experiments or the like, and determines the frequency f that realizes the desired divided vibration mode from among them.
  • the operator only has to arrange the actuator AC in at least one of the divided regions in which the desired divided vibration mode has been found.
  • the operator sets the determined frequency f that realizes one desired divided vibration mode to the drive signal X, and the controller 32 drives the actuator AC with this drive signal X.
  • the control unit 32 drives the actuator AC at a frequency f that vibrates the plate-like portion 30 on which the actuator AC is arranged in one desired divided vibration mode. At that time, the control unit 32 drives the actuator AC so that the divided vibration mode becomes a divided vibration mode in which the actuator AC is positioned in at least one divided region.
  • the operator may determine the arrangement of the actuators AC and then determine the frequency f that realizes one desired divided vibration mode. Even if the arrangement of the actuator AC is fixed, there may be a plurality of possible divided vibration modes, so by controlling the frequency f, two or more divided vibration modes can be selectively realized.
  • the user selects a frequency f that realizes one desired divided vibration mode among possible divided vibration modes and a frequency f that causes the actuator AC to be positioned in at least one divided region among a plurality of divided regions, as the drive signal X. set.
  • the controller 32 drives the actuator AC with this drive signal X.
  • the control unit 32 adjusts the actuator AC to a frequency f that vibrates the plate-like portion 30 in a desired divided vibration mode, and the divided vibration mode is a divided vibration mode in which the actuator AC is positioned in at least one divided region. to drive.
  • the divided regions DV1, 3 and the divided regions DV2, 4 vibrate in opposite phases. Therefore, since the phases of the sound waves generated from the divided areas DV1 and DV3 are opposite to the phases of the sound waves generated from the divided areas DV2 and DV4, the two sound waves cancel each other.
  • the vibration of the plate-like portion 30 is generally converted into sound, it becomes unnecessary acoustic noise unless some measures are taken.
  • the sounds generated from the divided areas DV1 and DV3 cancel out the sounds generated from the divided areas DV2 and DV4, so that the acoustic noise is suppressed.
  • the tactile sensation presenting function is maintained.
  • the distance L1 between any two arbitrary points on the outer periphery of the divided region where the distance between them is the longest is The split vibrational modes are chosen to be shorter than the wavelength at which they propagate.
  • the distance L1 in the divided region DV3 is the direct distance between the point P1 and the point P2 on the outer edge of the plate-like portion 30. As shown in FIG. The value of the distance L1 is common to all of the divided areas DV1 to DV4.
  • the divided vibration mode is selected so as to satisfy the distance L1 ⁇ 1.7 m.
  • the design in which the distance L1 between the two points is shorter than the wavelength of the sound of the set frequency f propagating in the air is applied to all of the plurality of divided regions. That is, the design may be applied to at least one segmented region among the plurality of segmented regions.
  • actuators AC1 and AC4 are driven in the first phase, and actuators AC2 and AC3 are driven in the second phase.
  • each of the two divided regions DV1 and DV2 vibrates in the vibration direction.
  • Actuators AC are arranged at non-node positions of the divided regions DV1 and DV2.
  • the antinode of the divided area DV2 becomes convex downward ( ⁇ Z direction). In other words, displacements in the +Z direction and displacements in the ⁇ Z direction alternately occur in the divided region DV1 and the divided region DV2.
  • the divided region DV1 and the divided region DV2 vibrate in opposite phases, so the sound waves generated from both cancel each other out. Moreover, since the user can perceive the vibration by touching any of the divided areas DV1 and DV2, the tactile sensation presenting function is maintained.
  • the distance L1 between any two points on the outer circumference of each divided area where the distance between them is the longest is The split vibrational modes are selected to be shorter than the wavelength of .
  • the distances L1 in the divided regions DV1 and DV2 are both direct distances between the points P3 and P4 on the outer edge of the plate-like portion 30.
  • the distance L1 is set to be more than half the wavelength when the sound of the set frequency f propagates in the air. Short is desirable.
  • the number of actuators AC to be arranged is four, and all the actuators AC are arranged on the rear surface 30b of the plate-like portion 30.
  • at least one actuator AC may be arranged on the plate-like portion 30, and may be arranged on at least one of the front surface 30a and the rear surface 30b. If the number of actuators AC is one, a desired split vibration mode can be realized by combining the arrangement of the actuators AC and the frequency f.
  • a desired divided vibration mode can be realized by combining the frequency f and the polarity in addition to the arrangement of the actuators AC.
  • the frequency and polarity (electrical phase) of the drive signal X are controlled so as to vibrate the plate-like portion 30 in a divided vibration mode in which the actuator AC is positioned in each of two or more divided regions. This is because even if the arrangement of the actuators AC is the same, if the polarities are controlled differently, the generated divided vibration modes will change.
  • FIG. 7 illustrates a case in which only one actuator AC is arranged on the plate-like portion 30 .
  • This example corresponds to the example shown in FIG. 5 in which only the actuator AC1 is left and the actuators AC2 to AC4 are eliminated.
  • the third divided vibration mode (FIG. 7) is substantially equivalent to the first divided vibration mode (FIG. 5) because it vibrates in four divisions.
  • a distance L1 is a direct distance between points P5 and P6, and is the same as the example shown in FIG.
  • FIG. 8 is a schematic diagram of the plate-like portion 30 in which the actuators AC are arranged on the front surface 30a and the back surface 30b of the plate-like portion 30. As shown in FIG. In this example, four actuators AC similar to actuators AC1 to AC4 are also arranged on the surface 30a with respect to the example shown in FIG.
  • the vibration efficiency is improved and the tactile sense presentation effect is enhanced.
  • the actuator AC is not arranged on the front surface 30a serving as the tactile sensation presentation surface, but is arranged on the back surface 30b that is different from the front surface 30a, the degree of freedom in designing the tactile sensation presentation surface increases.
  • the control unit 32 vibrates the plate-shaped part 30 in one of the plurality of divided vibration modes unique to the plate-shaped part 30 that presents a tactile sensation to the user by vibrating.
  • the actuator AC is driven at a frequency f that causes Actuator AC is positioned in at least one of the plurality of divided regions in the one divided vibration mode. Therefore, the sounds generated from the divided regions that vibrate in opposite phases cancel each other out, so that the acoustic noise caused by the vibration for presenting the tactile sensation is suppressed.
  • the configuration is simple because there is no need to provide a dedicated configuration for canceling the sound unlike the conventional one. Therefore, it is possible to suppress the sound caused by the vibration for presenting the tactile sense while avoiding the complication of the configuration.
  • the distance L1 between two arbitrary points on the outer circumference of the divided region where the distance between them is the longest is determined by vibrating the plate-like portion 30 in one divided vibration mode. is shorter than the wavelength of sound of frequency f that causes it to propagate in air. Therefore, the directivity of the sound generated from each divided area is lowered, and the effect of canceling the sound is enhanced, so that the sound can be further suppressed.
  • the actuator AC is provided on the plate-like portion 30 that is the object of vibration and there is no need to provide the actuator AC on the main body portion 201, the entire DJ equipment 200 can be made thinner.
  • the actuator AC is mounted by being directly attached to the plate-like portion 30, it is possible to generate vibrations more efficiently than in a configuration in which the vibration generated in the main body portion 201 is indirectly transmitted to the plate-like portion 30. can.
  • the frequency and polarity (electrical phase) of the drive signal X are controlled so as to vibrate the plate-like portion 30 in a divided vibration mode in which an actuator is positioned in each divided region.
  • a desired divided vibration mode can be realized by appropriate control according to the arrangement of the actuator AC.
  • the actuators AC arranged in the divided areas vibrating in the same phase are driven by signals of the same polarity, and the actuators AC arranged in the divided areas vibrating in the opposite phase are driven by signals of the opposite polarity. Therefore, vibration efficiency can be improved.
  • the plate-like portion 30 is in contact with the installation surface 21a of the rotor 21 via the spacer 33, the plate-like portion 30 can be vibrated appropriately.
  • the plate-like portion 30 receives a rotational force from the rotating body 21 via the spacer 33 and rotates without being interlocked with the rotating body 21 by a user operation, the plate-like portion 30 is rotated by a user operation (for example, DJ operation).
  • the part 30 can be freely rotated.
  • the rotating body 21 is provided with a power transmitting section 34 on the side facing the plate-shaped section 30 , and the plate-shaped section 30 receives power from the power transmitting section 34 on the side facing the installation surface 21 a of the rotating body 21 .
  • a power receiving unit 35 is provided for receiving power. Therefore, wiring between the rotating body 21 and the plate-like portion 30 becomes unnecessary, so that the degree of freedom in design increases.
  • the set frequency f is higher than 0 Hz and lower than 500 Hz, it is possible to enhance the tactile sense presentation effect by adopting a frequency at which tactile cells react actively. If the frequency f is set in the range of 100 Hz to 300 Hz, the tactile sensation presenting effect can be further enhanced.
  • the shape of the divided region is determined by the shape of the plate-like portion 30 and the divided vibration mode, and is not limited to the examples.
  • the distance L1 varies depending on the shape of the divided area. For example, if the divided area is circular, the distance L1 is the diameter, and if it is elliptical, it is the length of the long axis (major axis).
  • a protective layer may be provided to cover the front surface 30a and the back surface 30b of the plate-like portion 30 together with the actuator AC.
  • the actuator AC is arranged on the surface 30a serving as the tactile sense presentation surface, providing a film-like protective layer prevents the user's finger from being caught on the actuator AC, thereby improving the operational feeling.
  • the object to vibrate is the plate-like portion 30, but any shape can be used as long as it has a portion that presents a tactile sensation.
  • the location where the actuator AC is arranged may not be a flat surface, and may be a curved surface.
  • FIG. 9 is a schematic perspective view of another tactile presentation device.
  • This tactile sense presentation device 50 is, for example, a home appliance and includes a touch panel 51 .
  • the touch panel 51 is curved.
  • a curved diaphragm 52 corresponding to the plate-like portion 30 is arranged inside the touch panel 51 , and one or more actuators AC are arranged in divided regions of the diaphragm 52 .
  • the control unit 32 drives the actuator AC at a frequency f that vibrates the diaphragm 52 in a certain divided vibration mode.
  • the diaphragm 52 is excited by the actuator AC, the vibration is transmitted to the touch panel 51 .
  • the surface of the touch panel 51 serves as a tactile sense presentation surface that presents a tactile sense to the user.
  • the drive signal X need not be based on an acoustic signal.
  • a tactile feedback function that does not generate much acoustic noise may be applied to acoustic instruments.
  • a configuration similar to that of the plate-like portion 30 and its surroundings may be adopted for the body of the guitar to provide a tactile click sound.
  • the device to which the present invention is applied is not limited to a device that generates sound as long as it has a tactile presentation function. Therefore, the present invention can be applied to various electronic devices.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • User Interface Of Digital Computer (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

L'invention concerne un dispositif de présentation tactile ayant : une partie en forme de plaque pour présenter une sensation tactile à un utilisateur par vibration ; au moins un actionneur CA, disposé sur la partie en forme de plaque 30, pour faire vibrer la partie en forme de plaque 30 en étant entraîné ; et, une unité de commande pour entraîner l'actionneur CA à une fréquence pour faire vibrer la partie en forme de plaque 30 dans un mode de vibration divisée dans lequel chacune d'une pluralité de régions divisées séparées par des nœuds dans la vibration vibre. L'unité de commande 32 entraîne l'actionneur CA de telle sorte que le mode de vibration divisé est un mode de vibration divisé dans lequel l'actionneur CA est disposé dans au moins une région divisée.
PCT/JP2022/033282 2021-09-17 2022-09-05 Dispositif et procédé de présentation tactile WO2023042700A1 (fr)

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JP2021152072A JP2023044177A (ja) 2021-09-17 2021-09-17 触覚呈示装置および方法
JP2021-152072 2021-09-17

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011107879A (ja) * 2009-11-16 2011-06-02 Nec Corp 力覚提示装置、携帯端末機器
JP2012027765A (ja) * 2010-07-26 2012-02-09 Ricoh Co Ltd タッチパネル装置、これを含むタッチパネル付き表示装置、及びタッチパネル装置の制御方法
WO2015092966A1 (fr) * 2013-12-18 2015-06-25 パナソニックＩｐマネジメント株式会社 Dispositif électronique
WO2019244716A1 (fr) * 2018-06-19 2019-12-26 ソニー株式会社 Dispositif de traitement d'informations, procédé de traitement d'informations et programme

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011107879A (ja) * 2009-11-16 2011-06-02 Nec Corp 力覚提示装置、携帯端末機器
JP2012027765A (ja) * 2010-07-26 2012-02-09 Ricoh Co Ltd タッチパネル装置、これを含むタッチパネル付き表示装置、及びタッチパネル装置の制御方法
WO2015092966A1 (fr) * 2013-12-18 2015-06-25 パナソニックＩｐマネジメント株式会社 Dispositif électronique
WO2019244716A1 (fr) * 2018-06-19 2019-12-26 ソニー株式会社 Dispositif de traitement d'informations, procédé de traitement d'informations et programme

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