Stator structure design method and device for low vibration and noise underwater motor

Abstract

This invention provides a stator structure design method and apparatus for a low-vibration-noise underwater motor, belonging to the field of motor vibration reduction and noise reduction technology. The method includes: obtaining the vibration and noise spectrum characteristics of the underwater motor; constructing a broadband vibration-absorbing acoustic superstructure for the stator frame based on the vibration and noise spectrum characteristics and the acoustic black hole principle; performing verification calculations on the broadband vibration-absorbing acoustic superstructure; and determining a target structure suitable for the stator frame based on the verification calculation results. This invention addresses the shortcomings of existing technologies in controlling radiated noise from underwater motor stator frames. Based on the acoustic black hole principle, a broadband vibration-absorbing acoustic superstructure is installed on the surface of the stator frame, thereby reducing surface vibration. It has advantages such as simplicity, convenience, and broadband vibration absorption, effectively reducing underwater radiated noise from underwater motors, thus solving the technical problem of poor suppression of mid-frequency underwater radiated noise by existing underwater motor stator frames.

Description

Technical Field

[0001] This invention relates to the field of motor vibration reduction and noise reduction technology, specifically to a stator structure design method and device for a low-vibration and noise underwater motor. Background Technology

[0002] For conventional low-noise marine propulsion motors, the main concern is the transmission of vibration from the motor's mounting feet to the hull. Vibration isolators are typically installed on the motor mounting feet to reduce this vibration. The airborne noise radiated from the motor base surface is largely negligible, as it is transmitted through the hull to the seawater. However, for low-noise underwater propulsion motors used in unmanned aerial vehicles (UAVs), the installation and operating environment differs from that of conventional marine motors. This alters the vibration and noise propagation path, requiring attention not only to the transmission of vibration from the mounting feet to the hull but also to the underwater noise directly radiated from the mounting surface into the seawater. Therefore, it is crucial to control the underwater radiated noise generated by the vibration of the underwater motor stator mounting surface to meet the low vibration and noise requirements of the vessel.

[0003] The underwater radiated noise generated by the vibration of the stator frame surface of an underwater motor generally has a spectral characteristic mainly concentrated in the mid-to-high frequency range. For underwater radiated noise 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 algorithms. For underwater radiated noise in the mid-frequency range of 100Hz to 1000Hz, its characteristic component is mainly the tooth harmonic frequency, which can generally be suppressed by skewed slots or skewed poles, but the suppression effect is limited. Applying damping structures to the surface of the motor frame can reduce underwater radiated noise in the high-frequency range, but the reduction effect in the mid-frequency range is also very limited.

[0004] In summary, existing underwater motor stator frames are ineffective at suppressing mid-frequency underwater radiated noise. Summary of the Invention

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

[0006] To address the aforementioned problems, this invention provides a stator structure design method for a low-vibration, low-noise underwater motor, comprising:

[0007] Obtain the vibration and noise spectrum characteristics of the underwater motor;

[0008] Based on the aforementioned vibration and noise spectrum characteristics, and combined with the acoustic black hole principle, a broadband vibration-absorbing acoustic superstructure for the stator base is constructed.

[0009] The broadband vibration-absorbing acoustic superstructure is verified by calculation, and the target structure suitable for the stator frame is determined based on the verification calculation results.

[0010] In one possible implementation, obtaining the vibration noise spectrum characteristics of the underwater motor includes:

[0011] The vibration and noise spectrum characteristics of underwater motors are obtained based on vibration and noise simulation analysis methods or experimental testing methods.

[0012] In one possible implementation, the vibration and noise spectrum characteristics of the underwater motor are obtained based on vibration and noise simulation analysis methods, including:

[0013] Electromagnetic excitation was applied to the teeth of the stator core simulation model of the underwater motor, and the vibration response characteristics of the stator frame surface were calculated.

[0014] Based on the vibration response characteristics of the stator base surface, the vibration noise spectrum characteristics of the underwater motor are obtained.

[0015] In one possible implementation, the vibration and noise spectrum characteristics of the underwater motor are obtained based on experimental testing methods, including:

[0016] Based on the data collected from vibration acceleration measurement points arranged on the surface of the stator frame of the underwater motor, the vibration noise spectrum characteristics of the underwater motor are obtained.

[0017] In one possible implementation, based on the aforementioned vibration noise spectrum characteristics and in conjunction with the acoustic black hole principle, a broadband vibration-absorbing acoustic superstructure for the stator base is constructed, including:

[0018] Based on the aforementioned vibration and noise spectrum characteristics, the acoustic black hole structure is designed as a dynamic vibration absorber at the vibration absorption initiation frequency.

[0019] A broadband vibration-absorbing acoustic superstructure for the stator frame is constructed based on the design principle of the aforementioned dynamic vibration absorber.

[0020] In one possible implementation, the broadband vibration-absorbing acoustic superstructure of the stator frame is a symmetrical wedge structure; the wedge structure is a steel plate, obtained by geometric dimension iteration design, and rubber damping material is applied to both ends of the wedge structure.

[0021] In one possible implementation, the broadband vibration-absorbing acoustic superstructure is subjected to verification calculations, and a target structure suitable for the stator frame is determined based on the verification calculation results, including:

[0022] Based on modal simulation analysis, the modal frequencies and mode shapes of the broadband vibration-absorbing acoustic superstructure are calculated.

[0023] Based on the modal frequencies and mode shapes of the broadband vibration-absorbing acoustic superstructure, and after determining that the broadband vibration-absorbing acoustic superstructure meets the broadband vibration absorption requirements of the stator frame, the target structure of the stator frame is obtained.

[0024] The target structure of the stator frame is the structure obtained by fixing the intermediate steel plate of the symmetrical wedge structure to the surface of the stator frame.

[0025] On the other hand, the present invention also provides a stator structure design device for a low-vibration and low-noise underwater motor, comprising:

[0026] The feature acquisition module is used to obtain the vibration noise spectrum characteristics of the underwater motor;

[0027] The structural construction module is used to construct a broadband vibration-absorbing acoustic superstructure for the stator base based on the vibration and noise spectrum characteristics and in combination with the acoustic black hole principle.

[0028] The verification module is used to perform verification calculations on the broadband vibration-absorbing acoustic superstructure and determine the target structure suitable for the stator frame based on the verification calculation results.

[0029] On the other hand, the present invention also provides an electronic device, including a memory and a processor, wherein,

[0030] The memory is used to store programs;

[0031] The processor, coupled to the memory, 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 of the preceding claims.

[0032] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, 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 of the preceding claims.

[0033] The beneficial effects of the above implementation method are as follows: The stator structure design method and apparatus for low vibration and noise underwater motors provided by this invention construct a broadband vibration-absorbing acoustic superstructure for the stator frame based on the vibration and noise spectrum characteristics of the underwater motor; the broadband vibration-absorbing acoustic superstructure is verified by calculation, and a target structure suitable for the stator frame is determined based on the verification calculation results. This invention addresses the shortcomings of existing vibration reduction and noise reduction technologies in controlling the radiated noise of underwater motor stator frames. Based on the acoustic black hole principle, a broadband vibration-absorbing acoustic superstructure is installed on the surface of the stator frame, thereby reducing the surface vibration of the stator frame. It has advantages such as simplicity, convenience, and broadband vibration absorption, and can effectively reduce the underwater radiated noise of underwater motors, thus solving the technical problem of poor suppression effect of existing underwater motor stator frames on mid-frequency underwater radiated noise. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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 effort.

[0035] Figure 1 A flowchart of an embodiment of the stator structure design method for a low-vibration and noise underwater motor provided by the present invention;

[0036] Figure 2 A schematic diagram of the broadband vibration-absorbing acoustic superstructure on the surface of the underwater motor stator base provided by the present invention;

[0037] Figure 3 This is a schematic diagram of the installation position of the broadband vibration absorption structure provided by the present invention;

[0038] Figure 4 A schematic block diagram of an embodiment of the stator structure design device for a low-vibration and noise underwater motor provided by the present invention;

[0039] Figure 5 A schematic diagram of an embodiment of the electronic device provided by the present invention. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0041] In the description of the embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0042] In this embodiment of the invention, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, apparatus, product or device that includes a series of steps or modules is not necessarily limited to those steps or modules that are explicitly listed, but may include other steps or modules that are not explicitly listed or that are inherent to such process, method, product or device.

[0043] The naming or numbering of 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 order 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 effect can be achieved.

[0044] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0045] This invention provides a stator structure design method and apparatus for a low-vibration and low-noise underwater motor, which will be described below.

[0046] like Figure 1 As shown, the present invention provides a stator structure design method for a low-vibration and low-noise underwater motor, comprising:

[0047] S101. Obtain the vibration and noise spectrum characteristics of the underwater motor;

[0048] S102. Based on the aforementioned vibration and noise spectrum characteristics and combined with the acoustic black hole principle, a broadband vibration-absorbing acoustic superstructure for the stator base is constructed.

[0049] S103. Perform verification calculations on the broadband vibration-absorbing acoustic superstructure, and determine the target structure suitable for the stator frame based on the verification calculation results.

[0050] Understandably, this invention considers that acoustic superstructures can effectively reduce vibration noise in the mid-frequency range. Therefore, it proposes a stator structure design method for low-vibration-noise underwater motors. Based on the vibration and noise spectrum characteristics of underwater motors, the acoustic superstructure design is performed using the acoustic black hole principle. The designed broadband vibration-absorbing acoustic superstructure of the stator base is as follows: Figure 2 As shown, the acoustic superstructure is mounted on the surface of the stator base of the underwater motor, as... Figure 3 As shown, this absorbs and dissipates the vibration of the stator frame surface, thereby reducing the mid-frequency underwater radiated noise generated on the surface of the underwater motor frame.

[0051] In some embodiments, obtaining the vibration noise spectrum characteristics of the underwater motor includes:

[0052] The vibration and noise spectrum characteristics of underwater motors are obtained based on vibration and noise simulation analysis methods or experimental testing methods.

[0053] In some embodiments, the vibration and noise spectrum characteristics of an underwater motor are obtained based on a vibration and noise simulation analysis method, including:

[0054] Electromagnetic excitation was applied to the teeth of the stator core simulation model of the underwater motor, and the vibration response characteristics of the stator frame surface were calculated.

[0055] Based on the vibration response characteristics of the stator base surface, the vibration noise spectrum characteristics of the underwater motor are obtained.

[0056] In some embodiments, the vibration noise spectrum characteristics of the underwater motor are obtained based on experimental testing methods, including:

[0057] Based on the data collected from vibration acceleration measurement points arranged on the surface of the stator frame of the underwater motor, the vibration noise spectrum characteristics of the underwater motor are obtained.

[0058] In some embodiments, based on the vibration noise spectrum characteristics and combined with the acoustic black hole principle, a broadband vibration-absorbing acoustic superstructure for the stator frame is constructed, including:

[0059] Based on the aforementioned vibration and noise spectrum characteristics, the acoustic black hole structure is designed as a dynamic vibration absorber at the vibration absorption initiation frequency.

[0060] A broadband vibration-absorbing acoustic superstructure for the stator frame is constructed based on the design principle of the aforementioned dynamic vibration absorber.

[0061] It is understood that the stator structure design method for low vibration and noise underwater motors provided by this invention is based on the acoustic black hole principle, and involves designing acoustic superstructures such as wedges or cones, which are then installed on the surface of the stator base to effectively reduce underwater radiated noise on the surface of the underwater motor stator base.

[0062] In some embodiments, the broadband vibration-absorbing acoustic superstructure of the stator frame is a symmetrical wedge structure; the wedge structure is a steel plate, obtained by geometric dimension iteration design, and rubber damping material is applied to both ends of the wedge structure.

[0063] It is understandable that the broadband vibration-absorbing acoustic superstructure mounted on the surface of the stator base is mainly a geometrically gradual structure such as a wedge or cone, designed based on the principle of acoustic black holes, and damping material is applied to the tip of the wedge or cone.

[0064] In some embodiments, a verification calculation is performed on the broadband vibration-absorbing acoustic metastructure, and a target structure suitable for the stator frame is determined based on the verification calculation results, including:

[0065] Based on modal simulation analysis, the modal frequencies and mode shapes of the broadband vibration-absorbing acoustic superstructure are calculated.

[0066] Based on the modal frequencies and mode shapes of the broadband vibration-absorbing acoustic superstructure, and after determining that the broadband vibration-absorbing acoustic superstructure meets the broadband vibration absorption requirements of the stator frame, the target structure of the stator frame is obtained.

[0067] The target structure of the stator frame is the structure obtained by fixing the intermediate steel plate of the symmetrical wedge structure to the surface of the stator frame.

[0068] It is understandable that a broadband vibration-absorbing acoustic superstructure is installed on the surface of the underwater motor stator by means of welding or bolt fastening.

[0069] In some embodiments, the stator structure design method for low-vibration and noise underwater motors provided by the present invention includes:

[0070] Step 1: Obtain the vibration and noise spectrum characteristics of the underwater motor using vibration and noise simulation analysis methods or experimental testing methods.

[0071] Step 2: Design a broadband vibration-absorbing acoustic superstructure for the stator frame using the principle of acoustic black holes. This means that the incident bending wave is transmitted from the uniform area of ​​the structure to the wedge or cone tip of the structure. When the thickness of the tip approaches zero, the wave velocity of the bending wave gradually decreases to zero. The core is to use the geometrical change of the structure to manipulate the propagation characteristics of the bending wave and achieve effective absorption and dissipation of vibration energy.

[0072] Step 3: Use simulation analysis to verify the vibration absorption structure. If it meets the frequency band vibration absorption requirements, it can be installed on the surface of the stator base.

[0073] The beneficial effects of this invention are:

[0074] To address the shortcomings of existing vibration reduction and noise reduction technologies in controlling the radiated noise of underwater motor stator frames, this invention discloses a stator structure design method for low-vibration and noise underwater motors. Based on the acoustic black hole principle, a broadband vibration-absorbing acoustic superstructure is installed on the surface of the stator frame, thereby reducing the surface vibration of the stator frame. This method has the advantages of simplicity, convenience, and broadband vibration absorption, and can effectively reduce the underwater radiated noise of underwater motors.

[0075] In some embodiments, the main process of the low-vibration-noise underwater motor stator structure design method provided by the present invention includes: motor vibration and noise characteristic analysis, broadband vibration-absorbing acoustic superstructure design, vibration-absorbing structure verification and installation. Specifically, as follows:

[0076] 1. Vibration and noise characteristic analysis of motor: The vibration and noise spectrum characteristics of underwater motors are obtained by using vibration and noise simulation analysis methods or experimental testing 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 testing methods, vibration acceleration measurement points are generally arranged on the stator frame surface, and then the vibration characteristics of the stator frame surface under operating conditions are tested.

[0077] 2. Broadband Vibration Absorption Structure Design: At the initial vibration absorption frequency, the acoustic black hole structure is designed as a dynamic vibration absorber, with its modal frequency targeting the low-frequency peak vibration frequency. At the highest vibration absorption frequency, since the black hole effect of the absorption structure takes effect after the initial frequency, minimizing the initial frequency can achieve the acoustic black hole effect over a wider frequency band, thus achieving broadband vibration absorption. Based on the above design concept, a broadband vibration absorption structure is designed using a symmetrical wedge structure. This wedge structure is made of steel plate, and its geometric dimensions are iteratively designed to reduce the peak frequency of the base vibration. Rubber damping material is applied to both ends of the wedge structure to improve the broadband vibration absorption effect.

[0078] 3. Vibration Absorption Structure Verification and Installation: Using modal simulation analysis, the modal frequencies and mode shapes of the vibration absorption structure are calculated to verify the rationality of the structure design. If the broadband vibration absorption requirements of the motor stator frame are met, the intermediate steel plate of the symmetrical wedge structure can be fixed to the surface of the stator frame by welding or bolting, ultimately reducing the vibration noise of the stator frame.

[0079] like Figure 4 As shown, the present invention also provides a stator structure design device 400 for a low-vibration and low-noise underwater motor, comprising:

[0080] The feature acquisition module 401 is used to obtain the vibration noise spectrum features of the underwater motor;

[0081] The 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.

[0082] The verification module 403 is used to perform verification calculations on the broadband vibration-absorbing acoustic superstructure and determine the target structure suitable for the stator frame based on the verification calculation results.

[0083] The stator structure design device for low vibration and noise underwater motors provided in the above embodiments can realize the technical solutions described in the embodiments of the stator structure design method for low vibration and noise underwater motors. The specific implementation principles of each module or unit can be found in the corresponding content in the embodiments of the stator structure design method for low vibration and noise underwater motors, and will not be repeated here.

[0084] 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 the components shown, and more or fewer components may be implemented instead.

[0085] In some embodiments, memory 502 may be an internal storage unit of electronic device 500, such as a hard disk or memory of electronic device 500. In other embodiments, memory 502 may also be an external storage device of electronic device 500, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc. equipped on electronic device 500.

[0086] Furthermore, the memory 502 may include both internal storage units of the electronic device 500 and external storage devices. The memory 502 is used to store application software and various types of data installed on the electronic device 500.

[0087] In some embodiments, processor 501 may be a central processing unit (CPU), microprocessor, or other data processing chip, used to run program code stored in memory 502 or process data, such as the stator structure design method for low vibration and noise underwater motor in this invention.

[0088] In some embodiments, display 503 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen. Display 503 is used to display information from electronic device 500 and to display a visual user interface. Components 501-503 of electronic device 500 communicate with each other via a system bus.

[0089] In some embodiments of the present invention, when the processor 501 executes the stator structure design program for a low-vibration-noise underwater motor stored in the memory 502, the following steps can be implemented:

[0090] Obtain the vibration and noise spectrum characteristics of the underwater motor;

[0091] Based on the aforementioned vibration and noise spectrum characteristics, and combined with the acoustic black hole principle, a broadband vibration-absorbing acoustic superstructure for the stator base is constructed.

[0092] The broadband vibration-absorbing acoustic superstructure is verified by calculation, and the target structure suitable for the stator frame is determined based on the verification calculation results.

[0093] 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 functions mentioned above, it can also perform other functions, as can be found in the description of the corresponding method embodiments above.

[0094] Furthermore, the embodiments of the present invention do not specifically limit the type of electronic device 500 mentioned. Electronic device 500 can be a mobile phone, tablet computer, personal digital assistant (PDA), wearable device, laptop computer, or other portable electronic device. Exemplary embodiments of portable electronic devices include, but are not limited to, portable electronic devices running iOS, Android, Microsoft, or other operating systems. The aforementioned portable electronic device can 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, electronic device 500 may not be a portable electronic device, but rather a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0095] In another aspect, 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 a stator structure design method for a low-vibration and low-noise underwater motor provided by the methods described above, the method comprising:

[0096] Obtain the vibration and noise spectrum characteristics of the underwater motor;

[0097] Based on the aforementioned vibration and noise spectrum characteristics, and combined with the acoustic black hole principle, a broadband vibration-absorbing acoustic superstructure for the stator base is constructed.

[0098] The broadband vibration-absorbing acoustic superstructure is verified by calculation, and the target structure suitable for the stator frame is determined based on the verification calculation results.

[0099] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0100] The stator structure design method and device for low vibration and noise underwater motor provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A stator structure design method for a low-vibration-noise underwater motor, characterized in that, include: Obtain the vibration and noise spectrum characteristics of the underwater motor; Based on the aforementioned vibration and noise spectrum characteristics, and combined with the acoustic black hole principle, a broadband vibration-absorbing acoustic superstructure for the stator base is constructed. The broadband vibration-absorbing acoustic superstructure is verified by calculation, and the target structure suitable for the stator frame is determined based on the verification calculation results; Based on the aforementioned vibration and noise spectrum characteristics, and combined with the acoustic black hole principle, a broadband vibration-absorbing acoustic superstructure for the stator base is constructed, including: Based on the aforementioned vibration and noise spectrum characteristics, the acoustic black hole structure is designed as a dynamic vibration absorber at the vibration absorption initiation frequency. Based on the design principle of the aforementioned dynamic vibration absorber, a broadband vibration-absorbing acoustic superstructure for the stator frame is constructed. The broadband vibration-absorbing acoustic superstructure of the stator frame is a symmetrical wedge structure; the wedge structure is made of steel plate and is obtained by geometric dimension iteration design, and rubber damping material is applied to both ends of the wedge structure. The broadband vibration-absorbing acoustic superstructure is subjected to verification calculations. Based on the verification calculation results, a target structure suitable for the stator frame is determined, including: Based on modal simulation analysis, the modal frequencies and mode shapes of the broadband vibration-absorbing acoustic superstructure are calculated. Based on the modal frequencies and mode shapes of the broadband vibration-absorbing acoustic superstructure, and after determining that the broadband vibration-absorbing acoustic superstructure meets the broadband vibration absorption requirements of the stator frame, the target structure of the stator frame is obtained. The target structure of the stator frame is the structure obtained by fixing the intermediate steel plate of the symmetrical wedge structure to the surface of the stator frame.

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

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

4. The stator structure design method for a low-vibration and low-noise underwater motor according to claim 2, characterized in that, The vibration and noise spectrum characteristics of underwater motors were obtained based on experimental testing methods, including: Based on the data collected from vibration acceleration measurement 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. A stator structure design device for a low-vibration and low-noise underwater motor, characterized in that, include: The feature acquisition module is used to obtain the vibration noise spectrum characteristics of the underwater motor; The structural construction module is used to construct a broadband vibration-absorbing acoustic superstructure for the stator base based on the vibration and noise spectrum characteristics and in combination with the acoustic black hole principle. The verification module is used to perform verification calculations on the broadband vibration-absorbing acoustic superstructure and determine the target structure suitable for the stator frame based on the verification calculation results. Based on the aforementioned vibration and noise spectrum characteristics, and combined with the acoustic black hole principle, a broadband vibration-absorbing acoustic superstructure for the stator base is constructed, including: Based on the aforementioned vibration and noise spectrum characteristics, the acoustic black hole structure is designed as a dynamic vibration absorber at the vibration absorption initiation frequency. Based on the design principle of the aforementioned dynamic vibration absorber, a broadband vibration-absorbing acoustic superstructure for the stator frame is constructed. The broadband vibration-absorbing acoustic superstructure of the stator frame is a symmetrical wedge structure; the wedge structure is made of steel plate and is obtained by geometric dimension iteration design, and rubber damping material is applied to both ends of the wedge structure. The broadband vibration-absorbing acoustic superstructure is subjected to verification calculations. Based on the verification calculation results, a target structure suitable for the stator frame is determined, including: Based on modal simulation analysis, the modal frequencies and mode shapes of the broadband vibration-absorbing acoustic superstructure are calculated. Based on the modal frequencies and mode shapes of the broadband vibration-absorbing acoustic superstructure, and after determining that the broadband vibration-absorbing acoustic superstructure meets the broadband vibration absorption requirements of the stator frame, the target structure of the stator frame is obtained. The target structure of the stator frame is the structure obtained by fixing the intermediate steel plate of the symmetrical wedge structure to the surface of the stator frame.

6. An electronic device, characterized in that, Including memory and processor, among which, The memory is used to store programs; The processor, coupled to the memory, 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 4.

7. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements 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 4.

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