Glass diaphragm with vibrator, control system for glass diaphragm with vibrator, and control program for glass diaphragm with vibrator

Abstract

The vibrator-equipped glass diaphragm has a glass plate structure, and a first vibrator and a second vibrator which are attached to the glass plate structure, and when the lowest resonance frequency of the first vibrator is F1 (0) Hz and the lowest resonance frequency of the second vibrator is F2 (0) Hz, 3 Hz < = F1 (0)-F2 (0) < = 100 Hz is satisfied.

Description

Technical Field

[0001] The present disclosure relates to a glass vibration plate with a vibrator, a control system of the glass vibration plate with a vibrator, and a control program of the glass vibration plate with a vibrator. Background Art

[0002] In recent years, technology has been studied for vibrating a glass plate to function as a speaker.

[0003] Japanese Patent Publication No. 2021-180486 discloses an example of generating a predetermined sound by vibrating an interior material or a vehicle glass window. As an example, a structure is disclosed in which one or more sound generators are arranged on the front glass window to obtain a predetermined sound output characteristic.

[0004] However, sound generators such as actuators have an inherent lowest resonance frequency F(0), and since the resistance near the lowest resonance frequency is higher than that at other frequencies, a delay in the response time in the sound range near the lowest resonance frequency occurs, and there is a problem that it becomes difficult to accurately reproduce the sound near the lowest resonance frequency. Therefore, it is necessary to design the specifications of the sound generator so as to target the sound range other than the lowest resonance frequency, and it is difficult to ensure a wide range of reproduced sound. Summary of the invention

[0005] The purpose of the present disclosure is to provide a glass diaphragm with a vibrator, a control system for the glass diaphragm with a vibrator, and a control program for the glass diaphragm with a vibrator, which can obtain acoustic properties in a wide sound range with good reproducibility near the lowest resonance frequency inherent to the vibrator.

[0006] The glass vibration plate with a vibrator involved in the present disclosure comprises: a glass plate structure; and a first vibrator and a second vibrator, which are installed on the above-mentioned glass plate structure, and when the lowest resonance frequency of the above-mentioned first vibrator is set to F1(0) and the lowest resonance frequency of the above-mentioned second vibrator is set to F2(0), 3Hz≦|F1(0)-F2(0)|≦100Hz is satisfied, wherein the units of F1(0) and F2(0) are Hz.

[0007] The control system of the glass vibration plate with a vibrator involved in the present disclosure includes: a glass vibration plate with a vibrator, having a glass plate structure and a first vibrator and a second vibrator mounted on the above-mentioned glass plate structure, when the lowest resonance frequency of the above-mentioned first vibrator is set to F1(0) and the lowest resonance frequency of the above-mentioned second vibrator is set to F2(0), 3Hz≦|F1(0)-F2(0)|≦100Hz is satisfied, wherein the unit of F1(0) and F2(0) is Hz; and a control device, which controls the input voltage of each of the above-mentioned first vibrator and the above-mentioned second vibrator so that: the input voltage of the above-mentioned first vibrator required for the above-mentioned first vibrator to generate a vibration with a frequency near the lowest resonance frequency F1(0) of the above-mentioned first vibrator is lower than the input voltage of the above-mentioned second vibrator required for the above-mentioned second vibrator to generate a vibration with a frequency near the lowest resonance frequency F1(0) of the above-mentioned first vibrator, and on the other hand, as the input voltage of the above-mentioned first vibrator is reduced, the frequency of the vibration with the lowest resonance frequency F1(0) of the above-mentioned first vibrator is reduced. The input voltage of the second vibrator corresponding to the vicinity of the lowest resonant frequency F1(0) of the first vibrator increases to compensate for the reduction in the vibration originally scheduled to be generated by the first vibrator and having a frequency near the lowest resonant frequency F1(0) of the first vibrator; and the input voltage of the second vibrator corresponding to the vicinity of the lowest resonant frequency F2(0) of the second vibrator, which is required for the second vibrator to generate the vibration having a frequency near the lowest resonant frequency F2(0) of the second vibrator, is lower than the input voltage of the first vibrator corresponding to the vicinity of the lowest resonant frequency F2(0) of the second vibrator, which is required for the first vibrator to generate the vibration having a frequency near the lowest resonant frequency F2(0) of the second vibrator. On the other hand, as the input voltage of the second vibrator decreases, the input voltage of the first vibrator corresponding to the vicinity of the lowest resonant frequency F2(0) of the second vibrator increases to compensate for the reduction in the vibration originally scheduled to be generated by the second vibrator and having a frequency near the lowest resonant frequency F1(0) of the second vibrator.

[0008] The control program of the glass vibration plate involved in the present disclosure is a program for causing a computer to perform the following processing on a vibrator installed in a glass plate structure constituting a glass vibration plate with a vibrator, that is, a first vibrator and a second vibrator satisfying 3 Hz≦|F1(0)-F2(0)|≦100 Hz when the respective lowest resonance frequencies are set to F1(0) and F2(0), wherein the units of F1(0) and F2(0) are Hz: controlling the input voltage of each of the above-mentioned first vibrator and the above-mentioned second vibrator so that: the input voltage of the above-mentioned first vibrator required for the above-mentioned first vibrator to generate a vibration with a frequency near the lowest resonance frequency F1(0) of the above-mentioned first vibrator is lower than the input voltage of the above-mentioned second vibrator required for the above-mentioned second vibrator to generate a vibration with a frequency near the lowest resonance frequency F1(0) of the above-mentioned first vibrator; on the other hand, as the input voltage of the above-mentioned first vibrator is reduced, the input voltage of the above-mentioned second vibrator corresponding to the vicinity of the lowest resonance frequency F1(0) of the above-mentioned first vibrator is increased. The input voltage of the vibrator increases to compensate for the decrease in the vibration originally scheduled to be generated by the first vibrator and having a frequency near the lowest resonant frequency F1(0) of the first vibrator; and the input voltage of the second vibrator corresponding to the vicinity of the lowest resonant frequency F2(0) of the second vibrator, which is required for the second vibrator to generate the vibration with a frequency near the lowest resonant frequency F2(0) of the second vibrator, is lower than the input voltage of the first vibrator corresponding to the vicinity of the lowest resonant frequency F2(0) of the second vibrator, which is required for the first vibrator to generate the vibration with a frequency near the lowest resonant frequency F2(0) of the second vibrator. On the other hand, as the input voltage of the second vibrator decreases, the input voltage of the first vibrator corresponding to the vicinity of the lowest resonant frequency F2(0) of the second vibrator is increased to compensate for the decrease in the vibration originally scheduled to be generated by the second vibrator and having a frequency near the lowest resonant frequency F2(0) of the second vibrator.

[0009] The glass diaphragm with a vibrator, the control system for the glass diaphragm with a vibrator, and the control program for the glass diaphragm with a vibrator according to the present disclosure can obtain acoustic properties in a wide sound range with good reproducibility of the sound range near the lowest resonance frequency inherent to the vibrator. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a simplified diagram of a glass vibrating plate with a vibrator.

[0011] Figure 2 This is a cross-sectional view of the glass vibration plate with a vibrator as seen from the side.

[0012] Figure 3 It is a diagram showing an example of the frequency characteristics of an oscillator.

[0013] Figure 4 This is a diagram showing an example of an input signal to the oscillator.

[0014] Figure 5A This is a diagram showing an example of a 40 Hz vibration waveform generated by a vibrator.

[0015] Figure 5B This is a diagram showing an example of a 50 Hz vibration waveform generated by a vibrator.

[0016] Figure 5C This is a diagram showing an example of a 60 Hz vibration waveform generated by a vibrator.

[0017] Figure 6 It is a diagram showing an example of frequency characteristics of two transducers.

[0018] Figure 7 It is a diagram showing an example of output characteristics of two vibrators.

[0019] Figure 8 It is a diagram showing a configuration example of a control system for a glass diaphragm.

[0020] Fig. 9 This is a flowchart showing an example of the flow of control processing of the glass vibration plate with a vibrator.

[0021] Fig. 10A It is a figure which shows the example of mounting a vibrator on a glass plate structure.

[0022] Fig. 10B It is a diagram showing another example of mounting the vibrator on the glass plate structure.

[0023] Fig. 10C It is a diagram showing another example of mounting the vibrator on the glass plate structure.

[0024] Fig. 10D It is a diagram showing another example of mounting the vibrator on the glass plate structure.

[0025] Fig.11 This is a diagram showing an example of mounting two vibrators on the same mounting portion.

[0026] Fig.12 This is a diagram showing an example of a mounting portion.

[0027] Fig.13 It is a diagram showing an example of a vehicle.

[0028] Fig.14A This is a diagram showing an example of mounting a vibrator on a skylight glass.

[0029] Fig. 14B This is a diagram showing another example of mounting the vibrator on the skylight glass.

[0030] Fig. 14C This is a diagram showing an example of mounting a vibrator on a skylight glass.

[0031] Fig.15A This is a diagram showing an example of mounting a vibrator on a rear door glass.

[0032] Fig. 15B This is a diagram showing another example of mounting the vibrator on the rear door glass.

[0033] Fig. 15C This is a diagram showing an example of installing the vibrators at the four corners of the rear door glass.

[0034] Fig.15D This is a diagram showing an example of installing the vibrator facing the rear door glass.

[0035] Fig.15E This is a diagram showing an example of mounting a pair of vibrators on a rear door glass and mounting the vibrators.

[0036] Fig.15F The diagram shows examples of mounting three types of vibrators on a rear door glass. DETAILED DESCRIPTION

[0037] Hereinafter, the present embodiment will be described with reference to the drawings. In addition, the same reference numerals are attached to the same components and the same processes in all the drawings, and repeated descriptions are omitted.

[0038] <Structure of glass diaphragm with oscillator 1>

[0039] Figure 1 This is a schematic diagram of the glass vibration plate 1 with a vibrator when viewed from the main surface. Figure 2 It is a cross-sectional view of the glass diaphragm 1 with a vibrator as seen from the side.

[0040] like Figure 1 As shown, the glass vibration plate 1 with a vibrator of the present embodiment includes a glass vibration plate 2 and a vibrator 3, and two vibrators 3 are mounted on the glass vibration plate 2. Hereinafter, when each vibrator is distinguished from each other, one vibrator 3 is represented as "vibrator 3A" and the other vibrator 3 is represented as "vibrator 3B". When it is not necessary to distinguish each vibrator from each other, it is simply represented as "vibrator 3".

[0041] In this embodiment, the structure of the glass oscillating plate 1 with a vibrator is described using an example in which the glass oscillating plate 1 with a vibrator is applied to a vehicle window glass, but the application of the glass oscillating plate 1 with a vibrator is not limited to vehicle window glass. The glass oscillating plate 1 with a vibrator can be applied to window glass of buildings, structures, and moving objects that constitute a space for people to enter, such as residential window glass or soundproof room window glass.

[0042] The glass diaphragm 2 includes a glass plate structure 9. The glass plate structure 9 of the present embodiment may be made of a single glass plate, but is preferably made of a laminated glass from the viewpoint of improving the acoustic effect of the glass diaphragm 2.

[0043] exist Figure 1 , an example is shown in which the glass plate structure 9 is attached to a door of a vehicle and used as a side window glass for partitioning an indoor space and an outdoor space of the vehicle.

[0044] The vibrator 3 is mounted in a region A1 below the waistline BL of the glass plate structure 9. The lower side of the glass plate structure 9 refers to the direction of gravity along the surface of the glass plate structure 9 when the glass plate structure 9 is mounted on the door of the vehicle. The waistline BL corresponds to the lower side of the region A2 which is the opening region when the side window glass is mounted on the door of the vehicle and is in a fully closed state when the glass plate structure 9 is used as a slidable side window glass.

[0045] Reference Figure 2 , the structure of the glass vibration plate 1 with a vibrator will be described in detail.

[0046] (Glass Plate Structure 9)

[0047] In the present embodiment, the glass plate structure 9 is formed of transparent or translucent inorganic glass. In addition, the glass plate structure 9 may be formed of organic glass without being limited thereto. Examples of organic glass include PMMA (polymethylmethacrylate) resin, PC (polycarbonate) resin, PS (polystyrene) resin, PET (polyethyleneterephthalate) resin, PVC (polyvinyl chloride) resin, and cellulose resin.

[0048] In addition, in the case where the glass plate structure 9 is composed of a laminated glass including a plurality of glass plates, a structure in which an intermediate layer is sandwiched between a pair of glass plates can be cited, but it can also be a structure having more than three glass plates. The thickness of the laminated glass is preferably 1.0 mm or more, more preferably 2.0 mm or more, and further preferably 3.0 mm or more. Thus, the laminated glass can have the required sufficient strength. In addition, the thickness of each glass plate constituting the laminated glass is preferably 5.0 mm or less, more preferably 3.0 mm or less, and further preferably 2.0 mm or less. In addition, the thickness of each glass plate constituting the laminated glass is preferably 0.1 mm or more, more preferably 0.5 mm or more, and further preferably 1.0 mm or more. In addition, the thickness of a pair of glass plates may be the same or different.

[0049] The middle layer constituting the laminated glass is formed by transparent polyvinyl butyral (PVB)-based, ethylene-vinyl acetate copolymer (EVA)-based resin films, silicone (PDMS)-based, polyurethane-based, fluorine-based, polyethylene terephthalate-based, polycarbonate-based and other resin films. In addition, materials that improve sound insulation and materials that absorb ultraviolet rays and infrared rays may be added to the middle layer. In addition, the middle layer is not limited to the above-mentioned resin films, and gel layers, adhesive layers, liquid layers, sol layers or grease layers may also be listed. For the thickness of the middle layer, for example, when the above-mentioned resin films are used, it can be set to, for example, more than 1 nm and less than 1.0 mm, or it can be set to more than 0.1 mm and less than 0.9 mm, or it can be set to more than 0.2 mm and less than 0.8 mm.

[0050] (Mounting portion 7 and resin layer 8)

[0051] The mounting portion 7 is fixed to the main surface of one side of the glass plate structure 9 via the resin layer 8. In the following description, for convenience, the direction from the glass plate structure 9 toward the mounting portion 7 side is referred to as the "upward direction", and the opposite direction is referred to as the "downward direction". However, the up and down directions mentioned here may be different from the up and down directions in the state where the glass vibration plate 2 is assembled in a frame or the like. In addition, the mounting portion 7 is not essential, and the vibrator 3 may be mounted on the main surface of one side of the glass plate structure 9 without the mounting portion 7.

[0052] The resin layer 8 has the same outer diameter as the mounting portion 7 and is provided on the entire lower surface of the mounting portion 7. An adhesive or a pressure-sensitive adhesive can be used as appropriate as the resin layer 8. As the pressure-sensitive adhesive, a sheet-shaped adhesive tape can be used.

[0053] As an example, the resin layer 8 of the present embodiment may also be formed of an adhesive containing an acrylic resin, but is not limited thereto. In addition, the mounting portion 7 and the glass plate structure 9 may also be mechanically fixed. For example, when the glass plate structure 9 is a side window glass, in the region A1, the mounting portion 7 may be fixed to the lower side of the glass plate structure 9 (see FIG. 1 ). Figure 1 ) is used as a part of the mounting portion 7 and is used for fixing, thereby preventing the vibrator 3 from falling off.

[0054] (Connection 6)

[0055] like Figure 2 As shown, the connecting portion 6 is provided on the side of the mounting portion 7 opposite to the glass plate structure 9. In this embodiment, the glass plate structure 9 is arranged on the lower surface of the mounting portion 7, and the connecting portion 6 is arranged on the upper surface of the mounting portion 7.

[0056] The vibrator 3 for vibrating the glass plate structure 9 is mounted on the connection portion 6. As an example, the connection portion 6 of the present embodiment may constitute a housing of the vibrator 3. For example, the vibrator 3 may be assembled in a state where the lower surface is open, and the open lower surface is closed by the connection portion 6. That is, a part of the connection portion 6 may also constitute a cover portion that blocks a part of the vibrator 3. In addition, the vibrator 3 may be mechanically mounted on the connection portion 6 by screws, bolts, etc., or may be mounted on the connection portion 6 by adhesive, etc.

[0057] (Vibrator 3)

[0058] The vibrator 3 is connected to a power source (not shown) and vibrates the glass plate structure 9 according to the magnitude of the input voltage. As an example, the vibrator 3 of this embodiment is a voice coil motor including a coil portion and a magnetic circuit, one of which is fixed to the mounting portion 7, and the other is arranged to be relatively movable relative to the mounting portion 7. Then, when current flows in the coil portion, vibration is generated due to the interaction between the coil portion and the magnetic circuit, and the glass plate structure 9 is vibrated via the mounting portion 7. However, the vibrator 3 is not limited to a voice coil motor, and may be an actuator other than a voice coil motor, such as a piezoelectric actuator, as long as it is an actuator that can transmit the desired vibration to the glass plate structure 9.

[0059] In addition, in the present embodiment, the example of applying the glass vibration plate 1 with a vibrator to the side window glass of a vehicle is described, but it can also be used for example in the windshield, rear window glass, front triangular window glass, rear triangular window glass, and sunroof glass of the vehicle. In particular, when a fixed window glass other than the side window glass having an area that is always hidden except for the area A1 is used as the glass vibration plate 1 with a vibrator, the vibrator 3 can also be installed in the light-shielding area formed by providing a shielding layer such as black ceramic that shields visible light at the peripheral edge of the window glass. In this case, it is preferable to reduce the area of ​​the field of view of the opening of the fixed window glass that is blocked by the vibrator 3, and further, it is more preferable that the vibrator 3 can be configured to completely overlap with the light-shielding area.

[0060] <Control principle of glass vibration plate 1 with oscillator>

[0061] Noise generated outside the interior space of the vehicle, such as road noise generated when the vehicle travels on a road and noise of an engine or motor that generates driving force for the vehicle, enters the interior space of the vehicle mainly through the glass sheet structure 9 .

[0062] Therefore, if vibration having a frequency distribution in antiphase with the frequency distribution of noise entering the interior space of the vehicle is generated by the vibrator 3 , the noise is canceled, so that the noise in the interior space of the vehicle is reduced compared to before the vibrator 3 is driven.

[0063] This method of reducing noise is called active noise canceling. In active noise canceling, the vibrator 3 is driven to make the glass plate structure 9 vibrate in a phase opposite to the noise, so the response time of the vibrator 3 becomes an important indicator. The response time of the vibrator 3 is an example of the characteristics of the vibrator 3 represented by the time from the start of vibration of the vibrator 3 to the start of vibration corresponding to the input signal. The shorter the time until the start of vibration corresponding to the input signal, the better the responsiveness.

[0064] Furthermore, since the vibration of the glass plate constituent 9 due to the vibrator 3 generates a sound having a phase opposite to that of the noise, the vibration of the glass plate constituent 9 due to the vibrator 3 is also expressed by the sound pressure.

[0065] On the other hand, each object has a plurality of resonant frequencies F(N). Here, "N" is an integer greater than 0, indicating the order of the resonant frequency. Specifically, the resonant frequency F(0) indicates the lowest resonant frequency (also referred to as the 0th order resonant frequency). In addition, the resonant frequency F(N) relative to N greater than 1 indicates the Nth order resonant frequency with the frequency N+1 times the lowest resonant frequency F(0) as the resonant frequency.

[0066] The resonant frequency F(N) refers to the frequency at which the resonance of the object reaches a maximum value when a waveform having this frequency is input to the object. The resonance of the object is represented by changes in vibration, voltage, current, and resistance. For example, if the object is composed of a circuit, when an input signal corresponding to a frequency near the resonant frequency F(N) is input to the circuit, at least one of the voltage, current, and resistance value representing the circuit characteristics reaches an extreme value. The vicinity of the resonant frequency F(N) refers to a frequency band that includes the resonant frequency F(N), and is a frequency band in which a specific physical quantity representing the characteristics of the object that changes according to the input signal can be regarded as a change of the same degree as the physical quantity at the resonant frequency F(N).

[0067] Of course, each vibrator 3 also has a resonance frequency F(N). Among the resonance frequencies F(N), the frequency that causes the strongest resonance phenomenon of the object is the lowest resonance frequency F(0). The resonance phenomenon caused by the Nth order resonance frequency (N is greater than 1) is smaller than the resonance phenomenon caused by the lowest resonance frequency F(0). Therefore, the following description will focus on the lowest resonance frequency F(0) of the vibrator 3 to explain the characteristics of the vibrator 3.

[0068] Figure 3 It is a diagram showing an example of the frequency characteristics of the transducer 3 . Figure 3 In the frequency characteristic 11 , the horizontal axis represents the frequency Hz, and the vertical axis represents the resistance value Ω of the oscillator 3 .

[0069] When an input signal corresponding to a frequency near the lowest resonance frequency F(0) is input to the vibrator 3, the resistance value of the vibrator 3 near the lowest resonance frequency F(0) increases significantly compared to the resistance values ​​of the vibrator 3 at other frequencies. If the magnitude of the current supplied to the vibrator 3 is set constant, as the resistance value of the vibrator 3 increases, the response time of the vibrator 3 deteriorates compared to the response time of the vibrator 3 at other frequencies.

[0070] like Figure 3 As shown in the example, the lowest resonance frequency F(0) of the vibrator 3 having the frequency characteristic 11 is 48 Hz. Figure 3 The oscillator 3 having the illustrated frequency characteristic 11 has poorer responsiveness to input signals corresponding to frequencies around 48 Hz than other frequencies.

[0071] use Figure 4 , Figure 5A , Figure 5B as well as Figure 5C The responsiveness of the vibrator 3 will be described specifically.

[0072] Figure 4 It means to have Figure 3 1 is a diagram showing an example of an input signal to the transducer 3 , showing the frequency characteristic 11 . Figure 5A , Figure 5B as well as Figure 5C Indicates to have Figure 3 The frequency characteristic 11 of the oscillator 3 is shown as input Figure 4 FIG. 1 is a diagram showing an example of a vibration waveform when an input signal is shown.

[0073] Figure 5A , Figure 5B as well as Figure 5C The vibration waveform example shown is a waveform measured by an acceleration sensor (NP-3200, manufactured by Ono Measuring Instruments Co., Ltd.: illustration omitted) installed on another main surface of the glass plate structure 9 that is different from the main surface on which the vibrator 3 is installed. Specifically, a driving signal is output from a real-time acoustic vibration analysis system (DS-3200, manufactured by Ono Measuring Instruments Co., Ltd.: illustration omitted) to the vibrator 3, and the measurement signal based on the acceleration sensor is measured by the above-mentioned real-time acoustic vibration analysis system. Among them, the real-time acoustic vibration analysis system can output driving signals of various waveforms such as sine waves, burst waves, and impulse waves with arbitrary frequencies and voltages to the vibrator 3. In the case where there is only one vibrator 3, it is preferred to install the acceleration sensor at a position opposite to the vibrator 3 across the glass plate structure 9. In the case where there are multiple vibrators 3, it is preferred to install the acceleration sensor at a position that is as equidistant as possible from each vibrator 3.

[0074] like Figure 4 As shown, a toneburst signal 12 is used as an input signal to the transducer 3 . Figure 5A This is an example of a 40 Hz vibration waveform generated by the vibrator 3. Figure 5B This is an example of a 50 Hz vibration waveform generated by the vibrator 3. Figure 5C This is an example of a 60 Hz vibration waveform generated by the vibrator 3 . Figure 5A , Figure 5B as well as Figure 5C The horizontal axis of each vibration waveform example in the example represents time in seconds, and the vertical axis represents acceleration in m / s 2 .

[0075] according to Figure 5A and Figure 5C In the vibration waveform example of the vibrator 3 shown in FIG. 1 , from the start of the vibration caused by the sound burst signal 12, a vibration having an acceleration proportional to the voltage of the sound burst signal 12 is generated. Figure 5B The vibration waveform example of the vibrator 3 shown shows a "delay" phenomenon in which, at the start of the vibration caused by the burst signal 12, a vibration smaller than the vibration corresponding to the magnitude of the voltage of the burst signal 12 occurs, and then the vibration becomes larger.

[0076] Thus, the response time of the vibrator 3 near the lowest resonance frequency F(0) is worse than the response time in the frequency band other than the lowest resonance frequency F(0).

[0077] The deterioration (delay) of the response time near the resonance frequency F(0) is more significant than the delay of the response time at the resonance frequency above the resonance frequency F(1). Therefore, in order to achieve sound reproducibility in a wide sound range including low frequencies, it is very important to achieve the effect of improving the responsiveness near the lowest resonance frequency F(0).

[0078] In addition, it is known that the lowest resonance frequency F(0) of the vibrator 3 changes depending on the characteristics of the components constituting the vibrator 3. The lowest resonance frequency F(0) of the vibrator 3 is represented by, for example, formula (1). In formula (1), "K" is a spring constant representing the strength of the repulsive force of the vibrator 3, and "M" is the mass of the vibrating portion of the vibrator 3 connected to the glass plate constituting body 9 via a spring. There are various types of vibrating portions of the vibrator 3, for example, there are types of vibration of the shell constituting the outer shell of the vibrator 3, types of vibration of the magnet, types of vibration of both, and the like.

[0079] Formula 1:

[0080]

[0081] Formula (1) means that the lowest resonance frequency F(0) of the vibrator 3 changes by changing at least one of the spring constant K and the mass M of the vibrating part. Figure 1 As shown, by installing a plurality of vibrators 3 having different lowest resonance frequencies F(0) on a single glass plate structure 9, the deterioration of the responsiveness of the vibrator 3 near the lowest resonance frequency F(0) is eliminated. The plurality of vibrators 3 may be installed on one main surface of the glass plate structure 9, or the vibrator 3A may be installed on one main surface and the vibrator 3B may be installed on the other main surface. However, when the plurality of vibrators 3 are installed (only) on one main surface, the glass vibration plate 1 with the vibrators can be made low-profile, which is preferred.

[0082] Below, we will Figure 1 The lowest resonant frequency F(0) of the vibrator 3A is expressed as "lowest resonant frequency F1(0)", and the lowest resonant frequency F(0) of the vibrator 3B is expressed as "lowest resonant frequency F2(0)". In addition, when it is not necessary to distinguish between the lowest resonant frequency F1(0) and the lowest resonant frequency F2(0), they are expressed as the lowest resonant frequency F(0) as described above.

[0083] Figure 6 3A is a diagram showing an example of frequency characteristics of the transducer 3A and the transducer 3B. Figure 6 The horizontal axis represents the frequency Hz, and the vertical axis represents the internal impedance Ω of the vibrator 3. Figure 6 The frequency characteristic 11A in FIG. 1 shows an example of the frequency characteristic of the vibrator 3A. Figure 6 The frequency characteristic 11B in FIG. 11B shows an example of the frequency characteristic of the vibrator 3B. Figure 6 In the example shown, the lowest resonance frequency F1 ( 0 ) is less than the lowest resonance frequency F2 ( 0 ), but the lowest resonance frequency F1 ( 0 ) may be greater than the lowest resonance frequency F2 ( 0 ).

[0084] In addition, the vibrator 3A and the vibrator 3B use a vibrator 3 having a minimum resonance frequency F(0) of 200 Hz or less. The reason for using the vibrator 3 having a minimum resonance frequency F(0) of 200 Hz or less is that the glass plate structure 9 does not easily vibrate at a frequency below the minimum resonance frequency F(0). For example, if the minimum resonance frequency F(0) of the vibrator 3 is 500 Hz, it is difficult to vibrate the glass plate structure 9 at a frequency lower than 500 Hz. Therefore, from the viewpoint of generating a sound in the lowest bass range possible using the vibrator 3, it is preferred to use a vibrator 3 having a minimum resonance frequency F(0) of 200 Hz or less. Furthermore, the minimum resonance frequency F(0) of the vibrator 3 used in the glass vibration plate 1 with a vibrator is preferably 120 Hz or less, and more preferably 100 Hz or less.

[0085] When the glass plate structure 9 is a laminated glass, since it is designed to have a high attenuation coefficient and suppress resonant vibration, the lower limit value and upper limit value of the lowest resonant frequency F(0) of the vibrator 3 used in the glass vibration plate 1 with a vibrator are not particularly specified. For example, the lower limit value of the lowest resonant frequency F(0) of the vibrator 3 used in the glass vibration plate 1 with a vibrator may be 180 Hz or less, 150 Hz or less, 120 Hz or less, or 100 Hz or less. In addition, it may be 20 Hz or less, which is the lower limit of the human audible range.

[0086] When the lowest resonant frequency F1(0) of the vibrator 3A is different from the lowest resonant frequency F2(0) of the vibrator 3B, the input voltage of the vibrator 3A is reduced near the lowest resonant frequency F1(0), but the input voltage of the vibrator 3B is increased. Thus, the linearity of the sound quality can be maintained by relatively obtaining a vibration having a frequency near the lowest resonant frequency F1(0) through the vibrator 3B. Since the lowest resonant frequency F2(0) of the vibrator 3B is different from the lowest resonant frequency F1(0) of the vibrator 3A, the deterioration of the responsiveness of the vibrator 3A near the lowest resonant frequency F1(0) can be compensated by the vibrator 3B.

[0087] On the other hand, near the lowest resonance frequency F2(0), the input voltage of the vibrator 3B is reduced, but the input voltage of the vibrator 3A is increased. Thus, the vibration having a frequency near the lowest resonance frequency F2(0) is relatively obtained by the vibrator 3A, and the linearity of the sound quality can be maintained. Since the lowest resonance frequency F1(0) of the vibrator 3A is different from the lowest resonance frequency F2(0) of the vibrator 3B, the deterioration of the responsiveness of the vibrator 3B near the lowest resonance frequency F2(0) can be compensated by the vibrator 3A.

[0088] Figure 7 3A and 3B are diagrams showing examples of output characteristics of the vibrator 3A and the vibrator 3B when the input voltage is adjusted as described above. Figure 7 The curve 16 in FIG. 1 shows an example of the output characteristics of the vibrator 3A. Figure 7 Curve 17 in FIG. 1 shows an example of output characteristics of the vibrator 3B.

[0089] At the lowest resonance frequency F1(0), the input voltage of the vibrator 3A is reduced, while the input voltage of the vibrator 3B is increased, so that the vibration corresponding to the lowest resonance frequency F1(0) is mainly generated by the vibrator 3B. Also, at the lowest resonance frequency F2(0), the input voltage of the vibrator 3B is reduced, while the input voltage of the vibrator 3A is increased, so that the vibration corresponding to the lowest resonance frequency F2(0) is mainly generated by the vibrator 3A.

[0090] In addition, if the difference between the lowest resonant frequency F1(0) of the vibrator 3A and the lowest resonant frequency F2(0) of the vibrator 3B is too small, the vicinity of the lowest resonant frequency F1(0) overlaps with the vicinity of the lowest resonant frequency F2(0), and it becomes difficult to improve the responsiveness of the vibrator 3 with different lowest resonant frequencies F(0). On the other hand, if the difference between the lowest resonant frequency F1(0) of the vibrator 3A and the lowest resonant frequency F2(0) of the vibrator 3B is too large, the lowest resonant frequency F1(0) or the lowest resonant frequency F2(0) exceeds 200 Hz, and the processing speed of the control device 20 decreases. Therefore, the difference between the lowest resonant frequency F1(0) of the vibrator 3A and the lowest resonant frequency F2(0) of the vibrator 3B is preferably 3 Hz ≤ |F1(0)-F2(0)| ≤ 100 Hz. The difference is more preferably 4 Hz≦|F1(0)−F2(0)|≦50 Hz, and even more preferably 5 Hz≦|F1(0)−F2(0)|≦20 Hz.

[0091] <Structure of control system 10 for glass vibration plate with vibrator>

[0092] Figure 8 1 is a diagram showing a configuration example of a control system 10 for a glass oscillating plate with a vibrator. The control system 10 for a glass oscillating plate with a vibrator controls the input voltage near the minimum resonance frequency F(0) of the vibrators 3A and 3B as described above, and includes a glass oscillating plate 1 with a vibrator and a control device 20.

[0093] The control device 20 includes a DSP (Digital Signal Processor) 21 , a memory 22 , a DA converter (Digital-to-Analog Converter: DAC) 23 , and an amplifier (AMP) 24 .

[0094] The DSP 21 of the control device 20 is an example of a processor that controls the input voltage of the vibrator 3A and the vibrator 3B. The DSP 21 is connected to the memory 22 via the first internal bus 25A, and is connected to the DAC 23 via the second internal bus 25B.

[0095] The memory 22 is composed of a RAM and a nonvolatile memory. The RAM is an example of a storage device used as a temporary work area of ​​the DSP 21. The nonvolatile memory is an example of a storage device that maintains stored information even if the power supplied to the nonvolatile memory is cut off, and a semiconductor memory is used, for example.

[0096] DAC23 outputs a voltage corresponding to the value of the input voltage input to the vibrator 3 specified by the DSP21 in a digital value. For example, if the maximum value of the input voltage input to the vibrator 3 is 100V, and the maximum value of the output voltage of DAC23 is 1V, then when 50V is specified as the input voltage input to the vibrator 3, the voltage corresponding to the value of the input voltage input to the vibrator 3 becomes 0.5V. In addition, the range of the input voltage of the vibrator 3 is greater than 0.01V and less than 100V. In this way, DSP21 uses DAC23 to convert digital information into analog information. DSP21 is set for each vibrator 3. In this embodiment, DAC23 for vibrator 3A is represented as DAC23A, and DAC23 for vibrator 3B is represented as DAC23B.

[0097] AMP 24 amplifies the voltage input from DAC 23 via the third internal bus 25C to the value of the input voltage to the vibrator 3 specified by DSP 21. Similar to DAC 23, AMP 24 is provided for each vibrator 3. In this embodiment, AMP 24 for vibrator 3A is represented as AMP 24A, and AMP 24 for vibrator 3B is represented as AMP 24B.

[0098] The voltage amplified by the AMP 24A is input to the vibrator 3A via the first connection cable 26A. In addition, the voltage amplified by the AMP 24B is input to the vibrator 3B via the second connection cable 26B.

[0099] Thus, the input voltage specified by the DSP 21 is input to the vibrator 3A and the vibrator 3B. Such a control device 20 is constituted by a computer including the DSP 21 and the memory 22, for example.

[0100] <Control Process of Glass Vibration Plate with Vibrator>

[0101] Next, a control process of the glass diaphragm with a vibrator executed by the control device 20 will be described.

[0102] Fig. 9 This is a flowchart showing an example of the flow of control processing of the glass diaphragm with a vibrator executed by the DSP 21 of the control device 20 when the vibrator 3 is caused to vibrate at a frequency near the lowest resonance frequency F(0).

[0103] A control program for the glass oscillating plate with a vibrator that specifies the control process of the glass oscillating plate with a vibrator is pre-stored in, for example, a non-volatile memory constituting the memory 22 of the control device 20. The DSP 21 of the control device 20 reads the control program for the glass oscillating plate with a vibrator stored in the non-volatile memory and executes the control process of the glass oscillating plate with a vibrator.

[0104] Hereinafter, as an example, a case will be described in which the vibrator 3 is caused to vibrate at a frequency near the lowest resonance frequency F1 ( 0 ) of the vibrator 3A.

[0105] First, in step S10, DSP21 sets a sharing voltage for each vibrator 3 according to a predetermined sharing ratio. For example, in the case of frequencies other than the resonant frequency, the sharing ratio of vibrator 3A and vibrator 3B is not significantly changed, and a preferred acoustic performance can be expressed through corrections such as equalization and bandpass filters. The sharing ratio and each sharing voltage are, for example, pre-stored in a non-volatile memory constituting the memory 22. The sharing ratio and each sharing voltage are parameters that can be changed by the user. The sharing ratio is not limited to making the sound pressure or acceleration shared by each vibrator 3 the same value. For example, it can also be that the sharing ratio of vibrator 3A and vibrator 3B is 1:1.5 or 2:1, and a difference value is set in the voltage applied for each frequency. Here, as an example, the case where the sharing ratio of vibrator 3A and vibrator 3B is set to the same ratio is described.

[0106] In step S20, DSP21 lowers the shared voltage of vibrator 3A compared to the shared voltage of vibrator 3B. On the other hand, DSP21 increases the shared voltage of vibrator 3B to compensate for the reduction in the shared voltage of vibrator 3A. For example, if the shared voltages of vibrator 3A and vibrator 3B are set to 5V respectively, DSP21 lowers the shared voltage of vibrator 3A by 4V, but increases the shared voltage of vibrator 3B by 4V. As a result, the shared voltage of vibrator 3A becomes 1V, and the shared voltage of vibrator 3B becomes 9V. In this way, the updated shared voltage of each vibrator 3 calculated by the processing of step S20 is called the target voltage. DSP21 controls so that the target voltage of each vibrator 3 falls within the range of 0.01V or more and 100V or less.

[0107] Here, as an example, the amount of change of the vibrator 3A relative to the initial shared voltage and the amount of change of the vibrator 3B relative to the initial shared voltage are set to the same value, but the amount of change of each vibrator 3 relative to the initial shared voltage does not necessarily have to be set to the same value. In particular, when the glass is excited, the point that is physically easy to vibrate and the point that is not easy to vibrate are determined not only by the performance of the vibrator 3 but also by the excitation position, and it is not limited to the correct result of equal ratio correction at all positions and frequencies. DSP21 can also set the target voltage of the vibrator 3A and the vibrator 3B so that the difference between the amount of change of the vibrator 3A relative to the initial shared voltage and the amount of change of the vibrator 3B relative to the initial shared voltage falls within the allowable range that can be regarded as the same size.

[0108] Specifically, for example, when the allowable range is 0.5 V, if the absolute value of the difference in the variation of each vibrator 3 relative to the initial shared voltage is less than 0.5 V, the target voltage of the vibrator 3B becomes an input voltage that compensates for the decrease in the initial shared voltage of the vibrator 3A. The voltage value that becomes the allowable range can be set by the user and stored in advance in, for example, a nonvolatile memory constituting the memory 22.

[0109] In addition, when the acceleration of the vibrator 3A at the lowest resonance frequency F1(0) Hz is set to A1 (0) m / sec 2 , the acceleration of the vibrator 3A at the lowest resonance frequency F1(0)-3Hz is defined as A1 (0)－3 m / sec 2 , let the acceleration of the vibrator 3A at the lowest resonance frequency F1(0)+3Hz be A1 (0)+3 m / sec 2 , DSP21 preferably sets a target voltage that satisfies equation (2).

[0110] Formula 2:

[0111]

[0112] In formula (2), the value on the right, i.e., the difference in acceleration shown on the left, is preferably 5 m / sec. 2 Below, more preferably 3m / sec 2 Below. In addition, the difference between the target voltage of DSP21 when the vibration frequency of vibrator 3A is the lowest resonant frequency F1(0) Hz and the target voltage of DSP21 when the vibration frequency of vibrator 3A is the lowest resonant frequency F1(0)-3 Hz or the lowest resonant frequency F1(0)+3 Hz is preferably 20 V or less, more preferably 10 V or less, more preferably 5 V or less, further preferably 3 V or less, and particularly preferably 1 V or less. In addition, the difference between the target voltage of DSP21 when the vibration frequency of vibrator 3A is the lowest resonant frequency F1(0)+3 Hz and the target voltage of DSP21 when vibrator 3A is the lowest resonant frequency F1(0)-3 Hz is preferably 20 V or less, more preferably 10 V or less, more preferably 5 V or less, further preferably 3 V or less, and particularly preferably 1 V or less.

[0113] In addition, the acceleration of the vibrator 3B at the lowest resonance frequency F2(0) Hz is set to A2 (0) m / sec 2 , the acceleration of the vibrator 3B at the lowest resonance frequency F2(0)-3Hz is set to A2 (0)－3 m / sec 2 , the acceleration of the vibrator 3B at the lowest resonance frequency F2(0)+3Hz is set to A2(0)+3 m / sec 2 , DSP21 preferably sets a target voltage that satisfies equation (3).

[0114] Formula 3:

[0115]

[0116] In formula (3), the value on the right, i.e., the difference in acceleration shown on the left, is preferably 5 m / sec. 2 Below, more preferably 3m / sec 2 In addition, the difference between the target voltage of DSP21 when the vibrator 3B is at the lowest resonant frequency F1(0) Hz and the target voltage of DSP21 when the vibrator 3B is at the lowest resonant frequency F1(0)-3 Hz or the lowest resonant frequency F1(0)+3 Hz is preferably 20 V or less, more preferably 10 V or less, more preferably 5 V or less, further preferably 3 V or less, and particularly preferably 1 V or less. In addition, the difference between the target voltage of DSP21 when the vibrator 3B is at the lowest resonant frequency F1(0)+3 Hz and the target voltage of DSP21 when the vibrator 3B is at the lowest resonant frequency F1(0)-3 Hz is preferably 20 V or less, more preferably 10 V or less, more preferably 5 V or less, further preferably 3 V or less, and particularly preferably 1 V or less.

[0117] In step S30, the DSP 21 controls the input voltage of each vibrator 3 so that the input voltage of each vibrator 3 becomes the target voltage calculated in step S20, and the process ends. Fig. 9 The control process of the glass vibration plate with a vibrator is shown.

[0118] The sharing ratios of the transducers 3 include two types: a sharing ratio set in advance (referred to as a “predetermined sharing ratio”) and a sharing ratio calculated sequentially (referred to as a “sequential sharing ratio”).

[0119] For example, when the glass diaphragm 1 with a vibrator performs active noise reduction on a sound whose power spectrum is known in advance, such as music, indicating the change in the sound pressure level of each frequency band that occurs over time, an inverted power spectrum obtained by inverting the power spectrum is obtained from the power spectrum. The sound represented by the inverted power spectrum becomes a canceling sound having a frequency distribution inverse to the sound represented by the power spectrum. Therefore, a predetermined sharing ratio of the vibrator 3 can be prepared in advance for each sound based on the inverted power spectrum.

[0120] For example, if the specified sharing ratio is pre-stored in the memory 22 for each sound, the DSP 21 reads the specified sharing ratio corresponding to the specific sound from the memory 22 according to the moment when the specific sound is selected by the user and the moment when the specific sound starts to play, and sets the sharing voltage according to the read sharing ratio.

[0121] Specifically, for example, when the control device 20 is connected to a music player such as a smartphone, a music player, or a car navigation system by wire or wirelessly, the DSP 21 obtains information related to the title and performer of the music played by the user. The DSP 21 determines the music based on the obtained information related to the title and performer of the music, reads the specified sharing ratio corresponding to the determined music from the memory 22, and sets the sharing voltage according to the read sharing ratio.

[0122] In addition, for example, in the case of a piece of music played from a radio, the radio announcer will speak out information related to the title and performer of the music before playing the music. Therefore, DSP21 can also use a known voice recognition technology to obtain information related to the title and performer of the music played from the radio, and determine the music based on the information obtained. In the case where the radio announcer does not speak out information related to the title and performer of the music before playing the music, DSP21 can also determine the music based on the melody of the played music. In this case, DSP21 itself can perform the processing of determining the music based on the melody of the music, but it can also use a website that provides a service for determining the music based on the melody of the music to determine the music.

[0123] On the other hand, when active noise reduction is performed on a sound whose power spectrum and the position of the sound source cannot be predetermined, such as noise in a vehicle driving area, for example, by using a glass vibration plate 1 with a vibrator, a predetermined sharing ratio of the vibrator 3 cannot be prepared in advance because the inverse power spectrum cannot be obtained in advance.

[0124] Therefore, in this case, the DSP 21 collects sound using a microphone, sequentially generates an inverse power spectrum from the sound data of the collected sound, and sequentially calculates the sharing ratio of the transducer 3 based on the generated inverse power spectrum, thereby creating a sequential sharing ratio.

[0125] In the above, the control process of the glass vibration plate with a vibrator is described using the example of causing the vibrator 3 to vibrate at a frequency near the lowest resonance frequency F1(0), but the same process can be performed when causing the vibrator 3 to vibrate at a frequency near the lowest resonance frequency F2(0). In this case, in step S20, the DSP 21 only needs to lower the shared voltage of the vibrator 3B than the shared voltage of the vibrator 3A, but increase the shared voltage of the vibrator 3A to compensate for the reduction in the shared voltage of the vibrator 3B.

[0126] pass Fig. 9 In the control process of the glass vibration plate with vibrators shown, the response time of the vibration generated by the vibrators 3A and 3B near the lowest resonance frequency F(0) is suppressed to less than 0.1 sec. In addition, the response time of the vibration generated by the vibrators 3A and 3B near the lowest resonance frequency F(0) is preferably less than 0.05 sec, more preferably less than 0.01 sec, further preferably less than 0.005 sec, and particularly preferably less than 0.003 sec.

[0127] In addition, Figure 1 , an example is shown in which the vibrator 3A and the vibrator 3B are mounted at one end of the region A1 of the glass sheet structure 9 along the traveling direction of the vehicle, but the mounting position of the vibrator 3 in the region A1 is not limited.

[0128] For example, Fig. 10A As shown, the vibrator 3A and the vibrator 3B may be respectively mounted on both ends of the region A1 of the glass sheet structure 9 along the traveling direction of the vehicle.

[0129] Alternatively, a plurality of vibrators 3 having the same minimum resonance frequency F(0) may be mounted on the glass plate structure 9 . Fig. 10B 1 is a diagram showing an example in which a pair of vibrators 3A and 3B are installed at both ends of the region A1 of the glass sheet structure 9 along the traveling direction of the vehicle. Fig. 9 In step S30, DSP21 controls the input voltage of each vibrator 3A so that the input voltage of each vibrator 3A becomes the target voltage calculated in step S20. In addition, DSP21 controls the input voltage of each vibrator 3B so that the input voltage of each vibrator 3B becomes the target voltage calculated in step S20.

[0130] In addition, the number of the vibrators 3 having the same lowest resonance frequency F(0) among the vibrators 3 mounted on the glass plate structure 9 does not necessarily have to be the same. Fig. 10C 3B is a diagram showing an example of mounting to the glass plate structure 9 when the number of vibrators 3B is smaller than the number of vibrators 3A. Fig. 10C As shown, the number of vibrators 3 in the set of vibrators 3 having the same lowest resonance frequency F(0), that is, in the vibrator group having the same lowest resonance frequency F(0), may be different for each vibrator group.

[0131] In addition, in the above, an example is described in which two types of vibrators 3, namely, vibrator 3A and vibrator 3B, having different minimum resonance frequencies F(0) are installed on the glass plate structure 9, but three or more vibrators 3 having different minimum resonance frequencies F(0) may also be installed on the glass plate structure 9. Fig. 10D The figure shows an example of mounting three types of vibrators 3A, 3B, and 3C having different lowest resonance frequencies F(0) on a glass plate structure 9. When the vibrator 3 is caused to generate vibrations having a frequency near any of the lowest resonance frequencies F(0), the DSP 21 reduces the shared voltage of the vibrator 3 having the lowest resonance frequency F(0) to be generated compared with the shared voltages of the other vibrators 3. Alternatively, the DSP 21 performs control to increase the shared voltages of the other vibrators 3 so as to compensate for the reduction in the shared voltage of the vibrator having the lowest resonance frequency F(0) to be generated.

[0132] In addition, if Figure 2 As shown, when the vibrator 3 is mounted on the glass plate structure 9 , it is mounted on the glass plate structure 9 via the mounting portion 7 provided on one main surface of the glass plate structure 9 . However, a plurality of vibrators 3 may be mounted on one mounting portion 7 . Fig.11 The figure shows an example in which two vibrators 3 are fixed to one mounting portion 7 separately from each other. In addition, a dedicated mounting portion 7 for mounting the vibrator 3 may be provided in the glass plate structure 9, but in the case where a structure that can be used as the mounting portion 7 is already provided in the glass plate structure 9, the structure may be used as the mounting portion 7.

[0133] Fig.12 2 is a diagram showing an example of using a structure attached to a glass plate structure 9 as an attachment portion 7. Fig.12 In the example shown, a structure (holder) that is preliminarily attached to the glass sheet constituting body 9 in order to slide the glass sheet constituting body 9 in accordance with a switch operation by a user is used as the attachment portion 7 . Fig.12 The mounting portion 7 is in a U-shape, and the glass plate structure 9 is sandwiched in the gap of the U-shape, thereby supporting the glass plate structure 9 from below. Fig.12 A support member (not shown) is installed below the mounting portion 7 of the switch, and moves up and down by the rotation of the motor linked to the switch operation. By moving the support member upward, the glass plate structure 9 as a whole moves upward, and the opening area of ​​the vehicle is completely closed by the glass plate structure 9. In addition, by moving the support member downward, the glass plate structure 9 as a whole moves to a position below the waistline BL, and the opening area of ​​the vehicle is completely opened. The vibrator 3 is mounted on the mounting portion 7 using the structure for sliding the glass plate structure 9. In this case, a new mounting portion 7 for mounting the vibrator 3 on the glass plate structure 9 is sometimes not required.

[0134] In the above, the glass vibration plate 1 with a vibrator is described by taking the case where the vibrator 3 is mounted on the side window glass of a vehicle as an example. Fig.13As shown, the glass diaphragm 1 with a vibrator may be applied to at least one of a sunroof glass RG and a back door glass RW of a vehicle.

[0135] Figures 14A to 14C It is a diagram showing an example of mounting the vibrator 3 on the roof glass RG.

[0136] in, Fig.14A An example is shown in which the vibrator 3A is mounted near one of the opposing sides of the sunroof glass RG, and the vibrator 3B is mounted near the other side.

[0137] Fig. 14B The example in which one vibrator 3A is installed at two of the four corners of the sunroof glass RG and one vibrator 3B is installed at the remaining two corners is shown. The installation positions of the vibrators 3 are not limited to which two of the four corners of the sunroof glass RG the vibrators 3A are installed and which two of the four corners the vibrators 3B are installed.

[0138] Fig. 14C An example is shown in which a transducer pair consisting of a transducer 3A and a transducer 3B is attached to each of the four corners of the sunroof glass RG.

[0139] In addition, the number of the vibrators 3A and the number of the vibrators 3B mounted on the sunroof glass RG do not necessarily have to be the same. Fig. 14B In the illustrated embodiment, a vibrator 3A or a vibrator 3B is added near the center of the roof glass RG where two diagonal lines of the roof glass RG intersect.

[0140] on the other hand, Figures 15A to 15F This is a diagram showing an example of mounting the vibrator 3 on the rear door glass RW.

[0141] in, Fig.15A An example is shown in which one vibrator 3A and one vibrator 3B are attached along one side of the rear door glass RW.

[0142] Fig. 15B The example shown is that the vibrator 3A is mounted near one of the opposing sides of the rear door glass RW, and the vibrator 3B is mounted near the other side.

[0143] Fig. 15C The example in which one vibrator 3A is installed at two of the four corners of the rear door glass RW and one vibrator 3B is installed at the remaining two corners is shown. As in the case of the sunroof glass RG, there is no restriction on the installation position of the vibrator 3 such as which two of the four corners of the rear door glass RW the vibrator 3A is installed at and which two of the four corners the vibrator 3B is installed at.

[0144] Fig.15DAn example is shown in which two pairs of vibrators each consisting of a vibrator 3A and a vibrator 3B are mounted along one side of the rear door glass RW.

[0145] Fig.15E The example shown is that the transducer pair is mounted near each of the opposing sides of the rear door glass RW, and the transducer 3A is mounted near any one of the remaining sides.

[0146] Fig.15F Indicates that Fig.15E In this way, three or more types of vibrators 3 having different minimum resonance frequencies F(0) may be installed on the sunroof glass RG and the rear door glass RW.

[0147] Thus, for example, by taking into account the vibration characteristics of the glass plate structure 9, the frequency characteristics of the vibrator 3, and the acoustic characteristics inside the vehicle, it is determined how many vibrators 3 with what minimum resonance frequency F(0) should be installed at what positions of the glass used in which parts of the vehicle including the side window glass, the sunroof glass RG, and the rear door glass RW.

[0148] Furthermore, the glass diaphragm 1 with a vibrator is applied to a vehicle as described above. However, the glass diaphragm 1 with a vibrator can also be applied to glass used in moving objects such as trains, drones, airplanes, and ships, and window glass for buildings.

[0149] In addition, the glass vibration plate 1 with a vibrator can also be used as a partition that separates people from each other. Specifically, the glass vibration plate 1 with a vibrator can also be used in ticket booths in theaters, zoos, art galleries, and amusement parks, bank windows, station windows, and cash registers in convenience stores. In addition, the glass vibration plate 1 with a vibrator can also be used as a partition that separates each seat in a first-class cabin of an airplane.

[0150] Furthermore, in order to attenuate the sound generated from the inside of a machine or device, or to generate sound from the machine or device, the glass diaphragm 1 with a vibrator may be applied to the glass portion of the casing of the machine or device.

[0151] Furthermore, in order to attenuate the sound that intrudes from the space outside the glass soundproof wall (soundproof wall) installed on the roadside into the space inside, the glass diaphragm 1 with a vibrator may be applied to the glass portion of the soundproof wall (soundproof wall).

[0152] In the above, one method of the control system 10 of the glass vibration plate with a vibrator is described using the embodiment, but the disclosed method of the control system 10 of the glass vibration plate with a vibrator is only an example, and the method of the control system 10 of the glass vibration plate with a vibrator is not limited to the scope described in the embodiment. Various changes or improvements can be made to the embodiment without departing from the scope of the present disclosure, and the method to which such changes or improvements are made is also included in the disclosed technical scope. For example, without departing from the scope of the present disclosure, Fig. 9 The control process of the glass vibration plate with a vibrator shown above is supplemented with an additional process.

[0153] In addition, in the above-mentioned embodiment, as an example, Fig. 9 The control process of the glass vibration plate with a vibrator shown in the figure is described. However, the process equivalent to the process of the control process of the glass vibration plate with a vibrator can also be processed by hardware. In this case, the processing speed can be increased compared with the case where the control process of the glass vibration plate with a vibrator is implemented by software.

[0154] In the above-mentioned embodiments, the processor refers to a processor in a broad sense, including, for example, DSP21, and a dedicated processor. Dedicated processors include, for example, GPU (Graphics Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array), and programmable logic devices.

[0155] Furthermore, the operations of the processors in the above-described embodiments may be performed not only by one processor but also by cooperation of a plurality of processors located in physically separate locations.

[0156] In the above-mentioned embodiment, an example of storing the control program of the glass vibration plate with a vibrator in the non-volatile memory constituting the memory 22 is described, but the storage destination of the control program of the glass vibration plate with a vibrator is not limited to the non-volatile memory. The control program of the glass vibration plate with a vibrator disclosed in the present invention can also be provided in the form of being recorded in a storage medium that can be read by a computer. For example, the control program of the glass vibration plate with a vibrator can also be provided in the form of being recorded in an optical disk such as a CD-ROM (Compact Disk Read Only Memory), a DVD-ROM (Digital Versatile Disk Read Only Memory) and a Blu-ray disc. In addition, the control program of the glass vibration plate with a vibrator can also be provided in the form of being recorded in a portable semiconductor memory such as a USB (Universal Serial Bus) memory and a memory card. A non-volatile memory, a CD-ROM, a DVD-ROM, a Blu-ray disc, a USB and a memory card are examples of non-transitory storage media.

[0157] Alternatively, the control device 20 may download the control program for the glass vibration plate with a vibrator from an external device connected to the Internet via a communication unit (not shown) and store the program in a nonvolatile memory.

[0158] As described above, the following matters are disclosed in this specification.

[0159] (1) A glass vibration plate with a vibrator,

[0160] have:

[0161] a glass sheet forming body; and

[0162] The first vibrator and the second vibrator are mounted on the glass plate structure.

[0163] When the lowest resonant frequency of the first oscillator is set to F1(0), and

[0164] When the lowest resonant frequency of the second oscillator is set to F2(0),

[0165] Satisfy 3Hz≦|F1(0)-F2(0)|≦100Hz,

[0166] The unit of F1(0) and F2(0) is Hz.

[0167] According to this glass diaphragm with a vibrator, since the other vibrator can generate vibrations at a frequency corresponding to the lowest resonance frequency of one vibrator, acoustic properties in a wide sound range with good reproducibility of the sound range near the lowest resonance frequency inherent to the vibrator can be obtained.

[0168] (2) A glass vibration plate with a vibrator according to (1),

[0169] The lowest resonance frequency F1 (0) of the first oscillator and the lowest resonance frequency F2 (0) of the second oscillator are both 200 Hz or less.

[0170] According to this glass diaphragm with a vibrator, by using a vibrator having a lowest resonance frequency of 200 Hz or less, it is possible to generate a sound in the lowest bass range possible compared to a case where the lowest resonance frequency exceeds 200 Hz.

[0171] (3) A glass vibration plate with a vibrator according to (1) or (2),

[0172] The first vibrator and the second vibrator are fixed to each other in a manner separated from each other via one mounting portion provided on one main surface of the glass sheet structure.

[0173] According to this glass diaphragm with a vibrator, since a plurality of vibrators are fixed to the same mounting portion, the number of mounting portions can be reduced compared to a case where a mounting portion is provided for each vibrator.

[0174] (4) A glass vibration plate with a vibrator according to any one of (1) to (3),

[0175] The glass sheet structure is a vehicle window glass.

[0176] According to this glass diaphragm with a vibrator, it is possible to suppress the noise that enters the vehicle interior through the window glass.

[0177] (5) A glass vibration plate with a vibrator according to any one of (1) to (3),

[0178] The glass plate structure is glass used for at least one of a moving object, a building, a partition for separating people from each other, a housing of a device, and a soundproof wall.

[0179] This glass diaphragm with a vibrator can be applied to all objects made of glass.

[0180] (6) A control system for a glass vibration plate with a vibrator, wherein:

[0181] include:

[0182] A glass vibration plate with a vibrator, comprising a glass plate structure and a first vibrator and a second vibrator mounted on the glass plate structure, wherein when the lowest resonance frequency of the first vibrator is set to F1(0) and the lowest resonance frequency of the second vibrator is set to F2(0), 3 Hz≦|F1(0)-F2(0)|≦100 Hz is satisfied, wherein the units of F1(0) and F2(0) are Hz; and

[0183] A control device controls the input voltages of the first vibrator and the second vibrator respectively so as to: reduce the input voltage of the first vibrator required for the first vibrator to generate vibrations with a frequency near the lowest resonant frequency F1(0) of the first vibrator, compared with the input voltage of the second vibrator required for the second vibrator to generate vibrations with a frequency near the lowest resonant frequency F1(0) of the first vibrator; and on the other hand, as the input voltage of the first vibrator decreases, the input voltage of the second vibrator corresponding to the vicinity of the lowest resonant frequency F1(0) of the first vibrator is increased to compensate for the decrease in the vibration originally scheduled to be generated by the first vibrator with a frequency near the lowest resonant frequency F1(0) of the first vibrator; and The input voltage of the second oscillator required to generate vibrations with a frequency near the lowest resonant frequency F2(0) of the second oscillator and corresponding to the lowest resonant frequency F2(0) of the second oscillator is lower than the input voltage of the first oscillator required to generate vibrations with a frequency near the lowest resonant frequency F2(0) of the second oscillator and corresponding to the lowest resonant frequency F2(0) of the second oscillator. On the other hand, as the input voltage of the second oscillator decreases, the input voltage of the first oscillator corresponding to the lowest resonant frequency F2(0) of the second oscillator increases to compensate for the decrease in the vibration originally planned to be generated by the second oscillator and with a frequency near the lowest resonant frequency F2(0) of the second oscillator.

[0184] According to the control system of the glass diaphragm, since the other oscillator can generate vibrations having a frequency equivalent to the lowest resonance frequency of one oscillator, it is possible to obtain acoustic properties in a wide sound range with good reproducibility of the sound range near the lowest resonance frequency inherent to the oscillator.

[0185] (7) A control system for a glass vibration plate with a vibrator according to (6), wherein:

[0186] The lowest resonance frequency F1 (0) of the first oscillator and the lowest resonance frequency F2 (0) of the second oscillator are both 200 Hz or less.

[0187] According to the control system of the glass diaphragm, by using a vibrator having a minimum resonance frequency of 200 Hz or less, it is possible to generate a sound in the lowest bass range possible compared to a case where the minimum resonance frequency exceeds 200 Hz.

[0188] (8) A control system for a glass vibration plate with a vibrator according to (6) or (7), wherein:

[0189] The lowest resonance frequency F1(0) of the first oscillator and the lowest resonance frequency F2(0) of the second oscillator are respectively included in a predetermined frequency band of 20 Hz to 200 Hz.

[0190] The control device controls the input voltages of the first vibrator and the second vibrator respectively so that the differences of the input voltages of the first vibrator and the second vibrator with respect to the changes of the shared voltages predetermined as the input voltages of the first vibrator and the second vibrator in order to generate accelerations corresponding to the respective frequencies in the specified frequency band fall within a predetermined range in which the changes of the first vibrator and the changes of the second vibrator can be regarded as the same size.

[0191] According to the control system of the glass diaphragm, it is possible to produce the lowest possible bass sound compared to the case of using a vibrator with a minimum resonance frequency exceeding 200 Hz. In addition, according to the control system of the glass diaphragm, it is possible to compensate for the vibration of a frequency corresponding to the minimum resonance frequency of one vibrator by the vibration of another vibrator.

[0192] (9) A control system for a glass vibration plate with a vibrator according to (8), wherein:

[0193] The control device inputs a voltage in a range of 0.01V to 100V to the first vibrator and the second vibrator.

[0194] According to the control system of the glass diaphragm, the voltage input to each oscillator can be restricted within a predetermined range.

[0195] (10) A control system for a glass vibration plate with a vibrator according to any one of (6) to (9), wherein:

[0196] In a state where an input voltage is applied to the first vibrator and the second vibrator,

[0197] In the first oscillator, the difference between the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0) and the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0)-3 Hz is less than 20 V, and the difference between the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0) and the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0)+3 Hz is less than 20 V,

[0198] Alternatively, in the above-mentioned second oscillator, the difference between the target voltage of the above-mentioned control device when the vibration frequency of the above-mentioned second oscillator is the lowest resonant frequency F2(0) and the target voltage of the above-mentioned control device when the vibration frequency of the above-mentioned second oscillator is the lowest resonant frequency F2(0)-3Hz is less than 20V, and the difference between the target voltage of the above-mentioned control device when the vibration frequency of the above-mentioned second oscillator is the lowest resonant frequency F2(0) and the target voltage of the above-mentioned control device when the vibration frequency of the above-mentioned second oscillator is the lowest resonant frequency F2(0)+3Hz is less than 20V.

[0199] According to this control system of the glass diaphragm, it is possible to reproduce good sound near the lowest resonance frequency, compared with a case where no restriction is placed on the difference between target voltages at respective vibration frequencies.

[0200] (11) A control system for a glass vibration plate with a vibrator according to any one of (6) to (10), wherein:

[0201] The control device controls the input voltage of each of the first vibrator and the second vibrator so that the response time of the vibration generated by the first vibrator and the second vibrator in the frequency band near the lowest resonant frequency F1(0) of the first vibrator and the lowest resonant frequency F2(0) of the second vibrator is less than 0.1 sec.

[0202] According to this control system of the glass diaphragm, it is possible to suppress a decrease in the reproducibility of sound caused by a delay in the response time of the oscillator.

[0203] (12) A control program for a glass vibration plate with a vibrator, wherein:

[0204] The method is used to cause a computer to perform the following processing on a vibrator mounted on a glass plate structure constituting a glass vibration plate with a vibrator, that is, a first vibrator and a second vibrator satisfying 3 Hz ≦ |F1(0) - F2(0)| ≦ 100 Hz when the respective lowest resonance frequencies are set to F1(0) and F2(0), wherein the unit of F1(0) and F2(0) is Hz:

[0205] The input voltages of the first vibrator and the second vibrator are controlled so as to: make the input voltage of the first vibrator required for the first vibrator to generate vibrations with a frequency near the lowest resonant frequency F1(0) of the first vibrator lower than the input voltage of the second vibrator required for the second vibrator to generate vibrations with a frequency near the lowest resonant frequency F1(0) of the first vibrator; on the other hand, as the input voltage of the first vibrator decreases, the input voltage of the second vibrator corresponding to the vicinity of the lowest resonant frequency F1(0) of the first vibrator is increased to compensate for the decrease in the vibration originally planned to be generated by the first vibrator with a frequency near the lowest resonant frequency F1(0) of the first vibrator; and make the vibration generated by the second vibrator The input voltage of the second oscillator corresponding to the lowest resonant frequency F2(0) of the second oscillator, which is required for the vibration having a frequency near the lowest resonant frequency F2(0) of the second oscillator, is lower than the input voltage of the first oscillator corresponding to the lowest resonant frequency F2(0) of the second oscillator, which is required for the vibration having a frequency near the lowest resonant frequency F2(0) of the second oscillator generated by the first oscillator. On the other hand, as the input voltage of the second oscillator decreases, the input voltage of the first oscillator corresponding to the lowest resonant frequency F2(0) of the second oscillator increases to compensate for the decrease in the vibration having a frequency near the lowest resonant frequency F2(0) of the second oscillator originally planned to be generated by the second oscillator.

[0206] According to the control program of the glass vibration plate, a vibration with a frequency equivalent to the lowest resonance frequency of one vibrator can be generated by the other vibrator. Therefore, according to the control program of the glass vibration plate, a glass vibration plate with a vibrator can be realized, which has good reproducibility of the sound range near the lowest resonance frequency inherent to the vibrator and has acoustic properties in a wide sound range.

[0207] (13) A control program for a glass vibration plate with a vibrator according to (12), wherein:

[0208] The computer is configured to execute a process of controlling the input voltage of each of the first vibrator and the second vibrator whose lowest resonance frequency F1 ( 0 ) and the lowest resonance frequency F2 ( 0 ) are respectively 200 Hz or less.

[0209] According to the control program of the glass vibration plate, the control device controls the input voltage of the vibrator whose lowest resonance frequency is below 200 Hz. Therefore, according to the control program of the glass vibration plate, compared with the case where the control device controls the input voltage of the vibrator whose lowest resonance frequency exceeds 200 Hz, it is possible to produce the lowest possible bass sound.

[0210] (14) A control program for a glass vibration plate with a vibrator according to (12) or (13), wherein:

[0211] The method is configured to cause a computer to perform the following processing on the first vibrator and the second vibrator whose lowest resonance frequency F1(0) and the lowest resonance frequency F2(0) are respectively included in a predetermined frequency band of 20 Hz to 200 Hz:

[0212] The input voltages of the first vibrator and the second vibrator are controlled so that the differences of the changes of the input voltages of the first vibrator and the second vibrator relative to the changes of the shared voltages predetermined as the input voltages of the first vibrator and the second vibrator in order to generate accelerations corresponding to the respective frequencies in the specified frequency band fall within a predetermined range in which the changes of the first vibrator and the changes of the second vibrator can be regarded as having the same magnitude.

[0213] According to the control program of the glass vibration plate, it is possible to produce the lowest possible bass sound compared to the case where the input voltage of the vibrator with the lowest resonance frequency of 200 Hz is controlled. In addition, according to the control program of the glass vibration plate, the vibration of the frequency equivalent to the lowest resonance frequency of one vibrator can be compensated by the vibration of the other vibrator.

[0214] (15) A control program for a glass vibration plate with a vibrator according to (14), wherein:

[0215] The method is configured to cause the computer to execute a process of controlling the input voltage range of each of the first vibrator and the second vibrator to be greater than or equal to 0.01V and less than or equal to 100V.

[0216] According to the control program of the glass vibration plate, the voltage input to each vibrator can be restricted within a predetermined range.

[0217] (16) A control program for a glass vibration plate with a vibrator according to any one of (12) to (15), wherein:

[0218] Used to cause the above-mentioned computer to execute a process to generate the following voltage,

[0219] In a state where an input voltage is applied to the first vibrator and the second vibrator by the control device,

[0220] In the first oscillator, the difference between the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0) and the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0)-3 Hz is less than 20 V, and the difference between the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0) and the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0)+3 Hz is less than 20 V,

[0221] Alternatively, in the above-mentioned second oscillator, the difference between the target voltage of the above-mentioned control device when the vibration frequency of the above-mentioned second oscillator is the lowest resonant frequency F2(0) and the target voltage of the above-mentioned control device when the vibration frequency of the above-mentioned second oscillator is the lowest resonant frequency F2(0)-3Hz is less than 20V, and the difference between the target voltage of the above-mentioned control device when the vibration frequency of the above-mentioned second oscillator is the lowest resonant frequency F2(0) and the target voltage of the above-mentioned control device when the vibration frequency of the above-mentioned second oscillator is the lowest resonant frequency F2(0)+3Hz is less than 20V.

[0222] According to this control program for the glass diaphragm, it is possible to reproduce good sound near the lowest resonance frequency, compared with a case where no restriction is placed on the difference between target voltages at respective vibration frequencies.

[0223] (17) A control program for a glass vibration plate with a vibrator according to any one of (12) to (16), wherein:

[0224] The invention is used to make the computer execute the processing of controlling the input voltage of each of the first vibrator and the second vibrator so that the response time of the vibration generated by the first vibrator and the second vibrator in the frequency band near the lowest resonant frequency F1(0) of the first vibrator and the lowest resonant frequency F2(0) of the second vibrator is less than 0.1 sec.

[0225] According to this control program for the glass diaphragm, it is possible to suppress a reduction in the reproducibility of sound caused by a delay in the response time of the oscillator.

[0226] The entire disclosure of Japanese Patent Application No. 2022-157157 filed on September 29, 2022 is incorporated herein by reference. All documents, patent applications, and technical standards described in this specification are incorporated herein by reference as if each document, patent application, and technical standard were specifically and individually described as being incorporated by reference.

Claims

1. A glass vibration plate with a vibrator, wherein: have: a glass sheet forming body; and The first vibrator and the second vibrator are mounted on the glass plate structure. When the lowest resonant frequency of the first oscillator is set to F1(0), and When the lowest resonant frequency of the second oscillator is set to F2(0), Satisfy 3Hz≦|F1(0)-F2(0)|≦100Hz, The unit of F1(0) and F2(0) is Hz.

2. The glass vibration plate with a vibrator according to claim 1, wherein: The lowest resonance frequency F1 (0) of the first oscillator and the lowest resonance frequency F2 (0) of the second oscillator are both 200 Hz or less.

3. The glass vibration plate with a vibrator according to claim 1 or 2, wherein: The first vibrator and the second vibrator are fixed to each other in a manner separated from each other via one mounting portion provided on one main surface of the glass sheet structure.

4. The glass vibration plate with a vibrator according to any one of claims 1 to 3, wherein The glass sheet structure is a vehicle window glass.

5. The glass vibration plate with a vibrator according to any one of claims 1 to 3, wherein The glass plate structure is glass used for at least one of a moving object, a building, a partition for separating people from each other, a housing of a device, and a soundproof wall.

6. A control system for a glass vibration plate with a vibrator, wherein: include: A glass vibration plate with a vibrator, comprising a glass plate structure and a first vibrator and a second vibrator mounted on the glass plate structure, wherein when the lowest resonance frequency of the first vibrator is set to F1(0) and the lowest resonance frequency of the second vibrator is set to F2(0), 3 Hz≦|F1(0)-F2(0)|≦100 Hz is satisfied, wherein the units of F1(0) and F2(0) are Hz; as well as A control device controls the input voltages of the first vibrator and the second vibrator so as to: reduce the input voltage of the first vibrator required for the first vibrator to generate vibrations at a frequency near the lowest resonant frequency F1(0) of the first vibrator, compared with the input voltage of the second vibrator required for the second vibrator to generate vibrations at a frequency near the lowest resonant frequency F1(0) of the first vibrator; and, on the other hand, increase the input voltage of the second vibrator corresponding to the vicinity of the lowest resonant frequency F1(0) of the first vibrator as the input voltage of the first vibrator decreases, so as to compensate for the decrease in the vibration originally scheduled to be generated by the first vibrator at a frequency near the lowest resonant frequency F1(0) of the first vibrator; and An input voltage to the second oscillator required to generate vibrations at a frequency near the lowest resonant frequency F2(0) of the second oscillator and corresponding to the lowest resonant frequency F2(0) of the second oscillator is lower than an input voltage to the first oscillator required to generate vibrations at a frequency near the lowest resonant frequency F2(0) of the second oscillator and corresponding to the lowest resonant frequency F2(0) of the second oscillator. On the other hand, as the input voltage to the second oscillator decreases, the input voltage to the first oscillator corresponding to the lowest resonant frequency F2(0) of the second oscillator increases to compensate for the decrease in vibrations originally planned to be generated by the second oscillator and at a frequency near the lowest resonant frequency F2(0) of the second oscillator.

7. The control system of the glass vibration plate with a vibrator according to claim 6, wherein: The lowest resonance frequency F1 (0) of the first oscillator and the lowest resonance frequency F2 (0) of the second oscillator are both 200 Hz or less.

8. The control system of the glass vibration plate with a vibrator according to claim 6 or 7, wherein: The lowest resonance frequency F1(0) of the first oscillator and the lowest resonance frequency F2(0) of the second oscillator are respectively included in a predetermined frequency band of 20 Hz to 200 Hz. The control device controls the input voltages of the first vibrator and the second vibrator respectively so that the differences of the input voltages of the first vibrator and the input voltages of the second vibrator relative to the changes of the shared voltages predetermined as the input voltages of the first vibrator and the second vibrator in order to generate accelerations corresponding to the respective frequencies in the prescribed frequency band fall within a predetermined range in which the changes of the first vibrator and the changes of the second vibrator can be considered to be of the same magnitude.

9. The control system of the glass vibration plate with a vibrator according to claim 8, wherein: The control device inputs a voltage in a range of 0.01 V to 100 V to the first vibrator and the second vibrator.

10. The control system for a glass vibration plate with a vibrator according to any one of claims 6 to 9, wherein: In a state where an input voltage is applied to the first oscillator and the second oscillator, In the first oscillator, the difference between the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0) and the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0)-3Hz is 20V or less, and the difference between the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0) and the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0)+3Hz is 20V or less, Alternatively, in the second oscillator, the difference between the target voltage of the control device when the vibration frequency of the second oscillator is the lowest resonant frequency F2(0) and the target voltage of the control device when the vibration frequency of the second oscillator is the lowest resonant frequency F2(0)-3Hz is less than 20V, and the difference between the target voltage of the control device when the vibration frequency of the second oscillator is the lowest resonant frequency F2(0) and the target voltage of the control device when the vibration frequency of the second oscillator is the lowest resonant frequency F2(0)+3Hz is less than 20V.

11. The control system for a glass vibration plate with a vibrator according to any one of claims 6 to 10, wherein: The control device controls the input voltage of each of the first vibrator and the second vibrator so that the response time of the vibration generated by the first vibrator and the second vibrator in the frequency band near the lowest resonant frequency F1(0) of the first vibrator and the lowest resonant frequency F2(0) of the second vibrator is less than 0.1 sec.

12. A control program for a glass vibration plate with a vibrator, wherein: The method is used to cause a computer to perform the following processing on a vibrator mounted on a glass plate structure constituting a glass vibration plate with a vibrator, that is, a first vibrator and a second vibrator satisfying 3 Hz ≦ |F1(0) - F2(0)| ≦ 100 Hz when the respective lowest resonance frequencies are set to F1(0) and F2(0), wherein the unit of F1(0) and F2(0) is Hz: The input voltages of the first vibrator and the second vibrator are controlled so that: the input voltage of the first vibrator required for the first vibrator to generate vibrations having a frequency near the lowest resonant frequency F1(0) of the first vibrator is lower than the input voltage of the second vibrator required for the second vibrator to generate vibrations having a frequency near the lowest resonant frequency F1(0) of the first vibrator; on the other hand, as the input voltage of the first vibrator decreases, the input voltage of the second vibrator corresponding to the vicinity of the lowest resonant frequency F1(0) of the first vibrator is increased to compensate for the decrease in the vibration originally intended to be generated by the first vibrator and having a frequency near the lowest resonant frequency F1(0) of the first vibrator; and the vibration generated by the second vibrator is increased. An input voltage to the second oscillator corresponding to the vicinity of the lowest resonant frequency F2(0) of the second oscillator, which is required for vibrations having a frequency near the lowest resonant frequency F2(0) of the second oscillator, is lower than an input voltage to the first oscillator corresponding to the vicinity of the lowest resonant frequency F2(0) of the second oscillator, which is required for vibrations having a frequency near the lowest resonant frequency F2(0) of the second oscillator generated by the first oscillator. On the other hand, as the input voltage to the second oscillator decreases, the input voltage to the first oscillator corresponding to the vicinity of the lowest resonant frequency F2(0) of the second oscillator increases to compensate for the decrease in vibrations having a frequency near the lowest resonant frequency F2(0) of the second oscillator originally intended to be generated by the second oscillator.

13. The control program for the glass vibration plate with a vibrator according to claim 12, wherein: The computer is configured to execute a process of controlling the input voltage of each of the first vibrator and the second vibrator whose lowest resonance frequency F1 ( 0 ) and the lowest resonance frequency F2 ( 0 ) are respectively 200 Hz or less.

14. The control program for the glass vibration plate with a vibrator according to claim 12 or 13, wherein: The method is configured to cause a computer to perform the following processing on the first vibrator and the second vibrator whose lowest resonance frequency F1(0) and the lowest resonance frequency F2(0) are respectively included in a predetermined frequency band of 20 Hz to 200 Hz: The input voltages of the first vibrator and the second vibrator are controlled so that the differences between the input voltages of the first vibrator and the input voltages of the second vibrator, relative to changes in the shared voltages predetermined as the input voltages of the first vibrator and the second vibrator in order to generate accelerations corresponding to the respective frequencies in the prescribed frequency band, fall within a predetermined range in which the changes in the first vibrator and the changes in the second vibrator can be considered to be of the same magnitude.

15. The control program for the glass vibration plate with a vibrator according to claim 14, wherein: The method is configured to cause the computer to execute a process of controlling the range of the input voltage of each of the first vibrator and the second vibrator to be greater than or equal to 0.01V and less than or equal to 100V.

16. The control program of the glass vibration plate with a vibrator according to any one of claims 12 to 15, wherein: for causing the computer to execute a process for generating the following voltages, In a state where an input voltage is applied to the first vibrator and the second vibrator by a control device, In the first oscillator, the difference between the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0) and the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0)-3Hz is 20V or less, and the difference between the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0) and the target voltage of the control device when the vibration frequency of the first oscillator is the lowest resonant frequency F1(0)+3Hz is 20V or less, Alternatively, in the second oscillator, the difference between the target voltage of the control device when the vibration frequency of the second oscillator is the lowest resonant frequency F2(0) and the target voltage of the control device when the vibration frequency of the second oscillator is the lowest resonant frequency F2(0)-3Hz is less than 20V, and the difference between the target voltage of the control device when the vibration frequency of the second oscillator is the lowest resonant frequency F2(0) and the target voltage of the control device when the vibration frequency of the second oscillator is the lowest resonant frequency F2(0)+3Hz is less than 20V.

17. The control program of the glass vibration plate with a vibrator according to any one of claims 12 to 16, wherein: Used to enable a computer to execute processing for controlling the input voltages of each of the first vibrator and the second vibrator so that the response time of the vibrations generated by the first vibrator and the second vibrator in a frequency band near the lowest resonant frequency F1(0) of the first vibrator and near the lowest resonant frequency F2(0) of the second vibrator is less than 0.1 sec.

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