Method and device for designing stator structure of low-vibration-noise underwater motor

Abstract

The invention provides a stator structure design method and device for a low-vibration-noise underwater motor, and belongs to the technical field of motor vibration and noise reduction, and the method comprises the steps: obtaining the vibration noise spectrum characteristics of the underwater motor; on the basis of the vibration noise spectrum characteristics and in combination with an acoustic black hole principle, constructing a broadband vibration absorption acoustic superstructure of the stator base; and performing check calculation on the broadband vibration absorption acoustic superstructure, and determining a target structure suitable for the stator base based on a check calculation result. The broadband vibration absorption acoustic superstructure is installed on the surface of the stator base based on the acoustic black hole principle aiming at the defect of underwater motor stator base radiation noise control in the prior art, surface vibration of the stator base is further reduced, the broadband vibration absorption acoustic superstructure has the advantages of being simple, convenient, broadband in vibration absorption and the like, underwater radiation noise of an underwater motor can be effectively reduced, and the service life of the underwater motor is prolonged. Therefore, the technical problem that an existing underwater motor stator frame is poor in suppression effect on medium-frequency-band underwater radiation noise is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor vibration reduction and noise reduction, and in particular to a stator structure design method and device for a low-vibration and noise underwater motor. Background Art

[0002] For conventional low-noise marine propulsion motors, the main concern is the transmission of the motor foot vibration to the hull vibration. Generally, vibration isolators can be installed on the motor foot to reduce the vibration of the motor foot. For the air noise radiated from the surface of the motor base, the underwater radiation noise transmitted through the hull to the seawater can be basically ignored. However, for low-noise underwater propulsion motors for unmanned vehicles, since they are directly immersed in the seawater in the stern cabin, this is different from the installation and operation environment of previous marine motors, and the propagation path of their vibration noise has changed. It is necessary to pay attention not only to the transmission of the motor foot vibration to the hull, but also to the underwater noise directly radiated from the surface vibration of the base into the seawater. Therefore, it is necessary to focus on the underwater radiation noise generated by the surface vibration of the underwater motor stator base to meet the low vibration and noise requirements of the ship.

[0003] The spectrum characteristics of underwater radiation noise generated by the surface vibration of the stator frame of underwater motors are generally concentrated in the medium and high frequency bands. For underwater radiation noise in the high frequency band above 1000Hz, its characteristic component is mainly the switching frequency, which can generally be suppressed by measures such as carrier phase shifting, switching frequency spread spectrum or pulse position optimization, and low common mode algorithm; for underwater radiation noise in the medium frequency band of 100Hz to 1000Hz, its characteristic component is mainly the tooth harmonic frequency, which can generally be suppressed by inclined slots or inclined poles, but the suppression effect is limited. Applying damping structure on the surface of the motor frame can reduce underwater radiation noise in the high frequency band, but the reduction effect on the medium frequency band is also limited.

[0004] In summary, the existing underwater motor stator frame has a poor effect in suppressing underwater radiation noise in the mid-frequency band. Summary of the invention

[0005] In view of this, it is necessary to provide a stator structure design method and device for a low-vibration and noise underwater motor to solve the technical problem that the existing underwater motor stator base has a poor suppression effect on mid-frequency underwater radiation noise.

[0006] In order to solve the above problems, on the one hand, the present invention provides a stator structure design method for a low vibration and noise underwater motor, comprising: Obtain the vibration noise spectrum characteristics of underwater motors; Based on the vibration noise spectrum characteristics and combined with the acoustic black hole principle, a broadband vibration absorbing acoustic superstructure of the stator frame is constructed; A verification calculation is performed on the broadband vibration absorbing acoustic superstructure, and a target structure suitable for a stator frame is determined based on the verification calculation result.

[0007] In a possible implementation, obtaining the vibration noise spectrum characteristics of the underwater motor includes: The vibration and noise spectrum characteristics of the underwater motor are obtained based on the vibration and noise simulation analysis method or the experimental test method.

[0008] In a possible implementation, the vibration noise spectrum characteristics of the underwater motor are obtained based on the vibration noise simulation analysis method, including: Electromagnetic excitation is applied to the teeth of the stator core simulation model of the underwater motor, and the vibration response characteristics of the stator frame surface are calculated; Based on the vibration response characteristics of the stator frame surface, the vibration noise spectrum characteristics of the underwater motor are obtained.

[0009] In a possible implementation, the vibration noise spectrum characteristics of the underwater motor are obtained based on an experimental test method, including: Based on the data collected from the vibration acceleration measuring points arranged on the surface of the stator frame of the underwater motor, the vibration noise spectrum characteristics of the underwater motor are obtained.

[0010] In a possible implementation, based on the vibration noise spectrum characteristics and in combination with the acoustic black hole principle, a broadband vibration absorbing acoustic superstructure of the stator frame is constructed, including: Based on the vibration noise spectrum characteristics, the acoustic black hole structure is designed as a dynamic vibration absorber at the starting frequency of vibration absorption; A broadband vibration absorbing acoustic superstructure of the stator frame is constructed based on the design principle of the dynamic vibration absorber.

[0011] In a possible implementation, the broadband vibration-absorbing acoustic superstructure of the stator frame is a symmetrical wedge-shaped structure; the wedge-shaped structure is a steel plate and is obtained by iterative design of geometric dimensions, and rubber damping materials are applied to both ends of the wedge-shaped structure.

[0012] In a possible implementation, the broadband vibration absorbing acoustic superstructure is verified and calculated, and a target structure suitable for a stator frame is determined based on the verification and calculation results, including: Based on the modal simulation analysis method, the modal frequency and vibration shape of the broadband vibration absorbing acoustic superstructure are calculated; When it is determined based on the modal frequencies and vibration shapes of the broadband vibration absorbing acoustic superstructure that the broadband vibration absorbing acoustic superstructure meets the broadband vibration absorption requirements of the stator base, a target structure of the stator base is obtained; The target structure of the stator frame is a structure obtained by fixing a middle steel plate of a symmetrical wedge-shaped structure to the surface of the stator frame.

[0013] On the other hand, the present invention also provides a stator structure design device for a low vibration and noise underwater motor, comprising: A feature acquisition module is used to obtain the vibration noise spectrum characteristics of the underwater motor; A structural construction module, used to construct a broadband vibration-absorbing acoustic superstructure of the stator frame based on the vibration noise spectrum characteristics and in combination with the acoustic black hole principle; A verification module is used to perform verification calculation on the broadband vibration absorbing acoustic superstructure, and determine a target structure suitable for the stator frame based on the verification calculation result.

[0014] On the other hand, the present invention also provides an electronic device, including a memory and a processor, wherein: The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps of the stator structure design method for a low-vibration and noise underwater motor as described in any one of the above.

[0015] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the stator structure design method for a low-vibration and noise underwater motor as described in any one of the above items.

[0016] The beneficial effects of adopting the above implementation method are as follows: the stator structure design method and device for a low-vibration and noise underwater motor provided by the present invention constructs a broadband vibration-absorbing acoustic superstructure of the stator base through the vibration noise spectrum characteristics of the underwater motor; the broadband vibration-absorbing acoustic superstructure is verified and calculated, and a target structure suitable for the stator base is determined based on the verification calculation results. Aiming at the deficiencies of existing vibration reduction and noise reduction technologies in controlling the radiated noise of the stator base of underwater motors, the present invention installs a broadband vibration-absorbing acoustic superstructure on the surface of the stator base based on the principle of acoustic black holes, thereby reducing the surface vibration of the stator base. It has the advantages of simplicity, convenience, broadband vibration absorption, etc., and can effectively reduce the underwater radiation noise of underwater motors, thereby solving the technical problem that the existing underwater motor stator base has a poor suppression effect on the underwater radiation noise in the mid-frequency band. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A flow chart of an embodiment of a method for designing a stator structure of a low-vibration and noise underwater motor provided by the present invention; Figure 2A schematic diagram of a broadband vibration-absorbing acoustic superstructure on the surface of an underwater motor stator frame provided by the present invention; Figure 3 A schematic diagram of the installation position of the broadband vibration absorbing structure provided by the present invention; Figure 4 A principle block diagram of an embodiment of a stator structure design device for a low-vibration and noise underwater motor provided by the present invention; Figure 5 A schematic structural diagram of an embodiment of an electronic device provided by the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0020] In the description of the embodiments of the present application, unless otherwise specified, “plurality” means two or more than two.

[0021] The terms "including" and "having" and any variations thereof in the embodiments of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not explicitly listed or inherent to these processes, methods, products or equipment.

[0022] The naming or numbering of the steps in the embodiments of the present invention does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0023] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] The present invention provides a method and device for designing a stator structure of a low-vibration and low-noise underwater motor, which are described below respectively.

[0025] like Figure 1As shown, the present invention provides a stator structure design method for a low vibration and noise underwater motor, comprising: S101, obtaining the vibration noise spectrum characteristics of the underwater motor; S102, constructing a broadband vibration-absorbing acoustic superstructure of a stator frame based on the vibration noise spectrum characteristics and in combination with the acoustic black hole principle; S103, performing verification calculation on the broadband vibration absorbing acoustic superstructure, and determining a target structure suitable for a stator frame based on the verification calculation result.

[0026] It can be understood that the present invention takes into account that the acoustic superstructure can effectively reduce the vibration noise in the mid-frequency band, and thus proposes a stator structure design method for a low-vibration-noise underwater motor. According to the vibration noise spectrum characteristics of the underwater motor, the acoustic superstructure is designed using the acoustic black hole principle. The designed wide-band vibration-absorbing acoustic superstructure of the stator base is as follows: Figure 2 As shown, the acoustic superstructure is installed on the surface of the stator base of the underwater motor, as shown in Figure 3 As shown, the vibration of the stator frame surface is absorbed and dissipated, thereby reducing the mid-frequency underwater radiation noise generated by the surface of the underwater motor frame.

[0027] In some embodiments, obtaining the vibration noise spectrum characteristics of the underwater motor includes: The vibration and noise spectrum characteristics of the underwater motor are obtained based on the vibration and noise simulation analysis method or the experimental test method.

[0028] In some embodiments, the vibration noise spectrum characteristics of the underwater motor are obtained based on the vibration noise simulation analysis method, including: Electromagnetic excitation is applied to the teeth of the stator core simulation model of the underwater motor, and the vibration response characteristics of the stator frame surface are calculated; Based on the vibration response characteristics of the stator frame surface, the vibration noise spectrum characteristics of the underwater motor are obtained.

[0029] In some embodiments, the vibration and noise spectrum characteristics of the underwater motor are obtained based on the experimental test method, including: Based on the data collected from the vibration acceleration measuring points arranged on the surface of the stator frame of the underwater motor, the vibration noise spectrum characteristics of the underwater motor are obtained.

[0030] In some embodiments, based on the vibration noise spectrum characteristics and in combination with the acoustic black hole principle, a broadband vibration absorbing acoustic superstructure of the stator frame is constructed, including: Based on the vibration noise spectrum characteristics, the acoustic black hole structure is designed as a dynamic vibration absorber at the starting frequency of vibration absorption; A broadband vibration absorbing acoustic superstructure of the stator frame is constructed based on the design principle of the dynamic vibration absorber.

[0031] It can be understood that the stator structure design method of the low vibration and noise underwater motor provided by the present invention is based on the principle of acoustic black hole, and designs acoustic super structures such as wedge-shaped or cone-shaped structures, and installs them on the surface of the stator base, effectively reducing the underwater radiation noise on the surface of the stator base of the underwater motor.

[0032] In some embodiments, the broadband vibration-absorbing acoustic superstructure of the stator frame is a symmetrical wedge-shaped structure; the wedge-shaped structure is a steel plate and is obtained by iterative design of geometric dimensions, and rubber damping materials are applied to both ends of the wedge-shaped structure.

[0033] It can be understood that the broadband vibration-absorbing acoustic superstructure installed on the surface of the stator frame is mainly a geometric gradient structure such as a wedge or cone designed based on the principle of acoustic black hole, and damping material is applied to the tip of the wedge or cone.

[0034] In some embodiments, the broadband vibration absorbing acoustic superstructure is verified and calculated, and a target structure suitable for a stator frame is determined based on the verification and calculation results, including: Based on the modal simulation analysis method, the modal frequency and vibration shape of the broadband vibration absorbing acoustic superstructure are calculated; When it is determined based on the modal frequencies and vibration shapes of the broadband vibration absorbing acoustic superstructure that the broadband vibration absorbing acoustic superstructure meets the broadband vibration absorption requirements of the stator base, a target structure of the stator base is obtained; The target structure of the stator frame is a structure obtained by fixing a middle steel plate of a symmetrical wedge-shaped structure to the surface of the stator frame.

[0035] It is understandable that the broadband vibration absorbing acoustic superstructure is installed on the surface of the underwater motor stator by welding or bolting.

[0036] In some embodiments, the present invention provides a method for designing a stator structure of a low vibration and noise underwater motor, comprising: Step 1: Use a vibration noise simulation analysis method or an experimental test method to obtain the vibration noise spectrum characteristics of the underwater motor.

[0037] Step 2: Use the acoustic black hole principle to design a broadband vibration-absorbing acoustic superstructure for the stator frame. That is, the incident bending wave is transmitted from the uniform area of ​​the structure to the wedge-shaped or conical tip of the structure. When the thickness of the tip approaches zero, the bending wave velocity gradually decreases to zero. The core of this design is to use the geometric gradient of the structure to manipulate the propagation characteristics of the bending wave and achieve effective absorption and dissipation of vibration energy.

[0038] Step 3: Use simulation analysis methods to check and calculate the vibration absorption structure. If it meets the frequency band vibration absorption requirements, it can be installed on the surface of the stator frame.

[0039] The beneficial effects of the present invention are: In view of the shortcomings of existing vibration and noise reduction technologies in controlling the radiated noise of the stator base of underwater motors, the present invention discloses a stator structure design method for a low-vibration and noise underwater motor. Based on the principle of acoustic black holes, a broadband vibration-absorbing acoustic superstructure is installed on the surface of the stator base to reduce the surface vibration of the stator base. It has the advantages of simplicity, convenience, broadband vibration absorption, etc., and can effectively reduce the underwater radiated noise of the underwater motor.

[0040] In some embodiments, the main process of the stator structure design method of the low vibration and noise underwater motor provided by the present invention includes: motor vibration and noise characteristic analysis, broadband vibration absorption acoustic superstructure design, vibration absorption structure verification and installation. The details are as follows: 1. Analysis of motor vibration and noise characteristics: The vibration and noise spectrum characteristics of the underwater motor are obtained by using vibration and noise simulation analysis methods or experimental test methods. For motor vibration and noise simulation analysis, electromagnetic excitation is generally applied to the stator core teeth, and then the vibration response characteristics of the stator frame surface are calculated; for motor vibration and noise experimental test methods, vibration acceleration measurement points are generally arranged on the stator frame surface, and then the vibration characteristics of the stator frame surface under the operating state are tested.

[0041] 2. Design of broadband vibration absorption structure: At the starting frequency of vibration absorption, the acoustic black hole structure is designed as a dynamic vibration absorber, and its modal frequency is designed to target the low-frequency vibration peak frequency; at the highest frequency of vibration absorption, since the black hole effect of the vibration absorption structure takes effect after the starting frequency, reducing the starting frequency as much as possible can achieve the acoustic black hole effect in a wider frequency band, achieving the effect of broadband vibration absorption. According to the above design ideas, based on the symmetrical wedge structure, a broadband vibration absorption structure is designed. The wedge structure is a steel plate, and the peak frequency of the base vibration is reduced through geometric dimension iteration design, and rubber damping materials are applied to the ends of the wedge structure to improve the broadband vibration absorption effect.

[0042] 3. Check and install the vibration absorption structure: Use the modal simulation analysis method to calculate the modal frequency and vibration mode of the vibration absorption structure, and check whether the vibration absorption structure design is reasonable. If the broadband vibration absorption requirements of the motor stator frame are met, the middle steel plate of the symmetrical wedge structure can be fixed to the surface of the stator frame by welding or bolting, and finally the vibration noise of the stator frame can be reduced.

[0043] like Figure 4 As shown, the present invention also provides a stator structure design device 400 for a low vibration and noise underwater motor, comprising: A feature acquisition module 401 is used to obtain the vibration noise spectrum characteristics of the underwater motor; A structure construction module 402 is used to construct a broadband vibration absorbing acoustic superstructure of the stator frame based on the vibration noise spectrum characteristics and in combination with the acoustic black hole principle; The verification module 403 is used to perform verification calculation on the broadband vibration absorbing acoustic superstructure, and determine a target structure suitable for the stator frame based on the verification calculation result.

[0044] The stator structure design device for a low-vibration and noise underwater motor provided in the above embodiment can realize the technical solution described in the above embodiment of the stator structure design method for a low-vibration and noise underwater motor. The specific implementation principles of the above modules or units can refer to the corresponding contents in the above embodiment of the stator structure design method for a low-vibration and noise underwater motor, which will not be repeated here.

[0045] like Figure 5 As shown, the present invention also provides an electronic device 500. The electronic device 500 includes a processor 501, a memory 502 and a display 503. Figure 5 Only some components of the electronic device 500 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0046] In some embodiments, the memory 502 may be an internal storage unit of the electronic device 500, such as a hard disk or memory of the electronic device 500. In other embodiments, the memory 502 may also be an external storage device of the electronic device 500, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 500.

[0047] Furthermore, the memory 502 may include both an internal storage unit of the electronic device 500 and an external storage device. The memory 502 is used to store application software installed in the electronic device 500 and various data.

[0048] In some embodiments, the processor 501 can be a central processing unit (CPU), a microprocessor or other data processing chip, which is used to run the program code or process data stored in the memory 502, such as the stator structure design method of the low vibration and noise underwater motor in the present invention.

[0049] In some embodiments, the display 503 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 503 is used to display information on the electronic device 500 and to display a visual user interface. The components 501-503 of the electronic device 500 communicate with each other via a system bus.

[0050] In some embodiments of the present invention, when the processor 501 executes the stator structure design program of the low vibration and noise underwater motor in the memory 502, the following steps may be implemented: Obtain the vibration noise spectrum characteristics of underwater motors; Based on the vibration noise spectrum characteristics and combined with the acoustic black hole principle, a broadband vibration absorbing acoustic superstructure of the stator frame is constructed; A verification calculation is performed on the broadband vibration absorbing acoustic superstructure, and a target structure suitable for a stator frame is determined based on the verification calculation result.

[0051] It should be understood that: when the processor 501 executes the stator structure design program for the low vibration and noise underwater motor in the memory 502, in addition to the above functions, other functions can also be realized. For details, please refer to the description of the corresponding method embodiment above.

[0052] Furthermore, the embodiment of the present invention does not specifically limit the type of the electronic device 500 mentioned, and the electronic device 500 may be a portable electronic device such as a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, etc. Exemplary embodiments of portable electronic devices include but are not limited to portable electronic devices equipped with IOS, Android, Microsoft or other operating systems. The above-mentioned portable electronic device may also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, the electronic device 500 may not be a portable electronic device, but a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0053] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to execute the stator structure design method of the low vibration and noise underwater motor provided by the above methods, the method comprising: Obtain the vibration noise spectrum characteristics of underwater motors; Based on the vibration noise spectrum characteristics and combined with the acoustic black hole principle, a broadband vibration absorbing acoustic superstructure of the stator frame is constructed; A verification calculation is performed on the broadband vibration absorbing acoustic superstructure, and a target structure suitable for a stator frame is determined based on the verification calculation result.

[0054] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0055] The above is a detailed introduction to the stator structure design method and device for the low-vibration and noise underwater motor provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A method for designing a stator structure of a low vibration and noise underwater motor, characterized in that: include: Obtain the vibration noise spectrum characteristics of underwater motors; Based on the vibration noise spectrum characteristics and combined with the acoustic black hole principle, a broadband vibration absorbing acoustic superstructure of the stator frame is constructed; A verification calculation is performed on the broadband vibration absorbing acoustic superstructure, and a target structure suitable for a stator frame is determined based on the verification calculation result.

2. The stator structure design method of the low vibration and noise underwater motor according to claim 1 is characterized in that: Obtain the vibration and noise spectrum characteristics of underwater motors, including: The vibration and noise spectrum characteristics of the underwater motor are obtained based on the vibration and noise simulation analysis method or the experimental test method.

3. The stator structure design method of the low vibration and noise underwater motor according to claim 2 is characterized in that: The vibration and noise spectrum characteristics of underwater motors are obtained based on the vibration and noise simulation analysis method, including: Electromagnetic excitation is applied to the teeth of the stator core simulation model of the underwater motor, and the vibration response characteristics of the stator frame surface are calculated; Based on the vibration response characteristics of the stator frame surface, the vibration noise spectrum characteristics of the underwater motor are obtained.

4. The stator structure design method of the low vibration and noise underwater motor according to claim 2 is characterized in that: The vibration and noise spectrum characteristics of underwater motors are obtained based on experimental test methods, including: Based on the data collected from the vibration acceleration measuring points arranged on the surface of the stator frame of the underwater motor, the vibration noise spectrum characteristics of the underwater motor are obtained.

5. The stator structure design method of a low vibration and noise underwater motor according to any one of claims 1 to 4, characterized in that: Based on the vibration noise spectrum characteristics and combined with the acoustic black hole principle, a broadband vibration absorbing acoustic superstructure of the stator frame is constructed, including: Based on the vibration noise spectrum characteristics, the acoustic black hole structure is designed as a dynamic vibration absorber at the starting frequency of vibration absorption; A broadband vibration absorbing acoustic superstructure of the stator frame is constructed based on the design principle of the dynamic vibration absorber.

6. The stator structure design method of a low vibration and noise underwater motor according to claim 5 is characterized in that: The broadband vibration-absorbing acoustic superstructure of the stator frame is a symmetrical wedge-shaped structure; the wedge-shaped structure is a steel plate and is obtained by iterative design of geometric dimensions, and rubber damping materials are applied to the ends of both ends of the wedge-shaped structure.

7. The stator structure design method of a low vibration and noise underwater motor according to claim 6 is characterized in that: The broadband vibration absorbing acoustic superstructure is verified and calculated, and a target structure suitable for a stator frame is determined based on the verification and calculation results, including: Based on the modal simulation analysis method, the modal frequency and vibration shape of the broadband vibration absorbing acoustic superstructure are calculated; When it is determined based on the modal frequencies and vibration shapes of the broadband vibration absorbing acoustic superstructure that the broadband vibration absorbing acoustic superstructure meets the broadband vibration absorption requirements of the stator base, a target structure of the stator base is obtained; The target structure of the stator frame is a structure obtained by fixing a middle steel plate of a symmetrical wedge-shaped structure to the surface of the stator frame.

8. A stator structure design device for a low vibration and noise underwater motor, characterized in that: include: A feature acquisition module is used to obtain the vibration noise spectrum characteristics of the underwater motor; A structural construction module, used to construct a broadband vibration-absorbing acoustic superstructure of the stator frame based on the vibration noise spectrum characteristics and in combination with the acoustic black hole principle; A verification module is used to perform verification calculation on the broadband vibration absorbing acoustic superstructure, and determine a target structure suitable for the stator frame based on the verification calculation result.

9. An electronic device, characterized in that: comprising a memory and a processor, wherein: The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps of the stator structure design method for a low vibration and noise underwater motor as described in any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the stator structure design method for a low vibration and noise underwater motor as described in any one of claims 1 to 7 are implemented.

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