A lunar dust dynamic stirring device based on a high-voltage alternating coil and a lunar dust stirring field construction method thereof

Abstract

A lunar dust dynamic stirring device based on high-voltage alternating coil and a dust field construction method thereof, relate to the technical field of space environment simulation and lunar dust control, and aim to solve the problem that lunar dust is difficult to be stirred uniformly and continuously to form a controllable dynamic dust field in a vacuum environment, and propose the following scheme: a tray, a lunar dust layer and a coil array are arranged in a vacuum test chamber, a high-voltage alternating signal with adjustable amplitude, frequency, waveform and phase is output to each coil by a multi-channel high-voltage alternating power supply, and a monitoring and feedback system feeds back the dust stirring state to a control system to adjust the coil output parameters. The present application is suitable for lunar dust environment simulation and lunar dust protection test.

Description

Technical Field

[0001] This invention belongs to the field of space environment simulation and dust and particulate matter control technology. Specifically, it relates to a device and method for actively agitating lunar dust deposited inside the cabin and forming a controllable, uniform, and dynamic suspended dust field by using a high-voltage alternating coil to generate a non-uniform time-varying electric field under simulated lunar gravity or microgravity environment. Background Technology

[0002] Lunar probes, extravehicular activity equipment, and space materials are susceptible to the effects of lunar dust particles in the lunar environment. To conduct tests on lunar dust environment adaptability, protective capabilities, and component reliability under terrestrial conditions, it is typically necessary to lay a lunar dust deposition layer inside a vacuum test chamber and use external excitation methods to transform the lunar dust particles from a deposited state to a suspended or migrating state, thereby constructing a dynamic dust field that approximates the movement characteristics of lunar dust. Common practices in existing lunar dust environment simulation tests include using mechanical vibration to disturb and lift the lunar dust deposition layer, using airflow to drive particle movement, using a single-pole high-voltage electrostatic field to initiate charged lunar dust particles, or using ultraviolet light, electron beams, etc., to change the charge state of the particles and achieve localized agitation.

[0003] While the aforementioned methods can detach lunar dust particles from the deposition layer under certain conditions, they still have shortcomings in constructing a sustainable dynamic dust field within a vacuum test chamber. Mechanical vibration primarily transmits disturbance energy through the substrate; the starting position and direction of motion of lunar dust particles are significantly affected by the location of the vibration source, easily leading to localized dust dispersion and accumulation. Airflow purging relies on the gas medium to transfer momentum, making it unsuitable for simulating lunar dust suspension in low-pressure or vacuum environments. Although a single-pole high-voltage electrostatic field can induce jumping motion in charged particles, the area and direction of the electric field are relatively fixed, causing particles to tend to accumulate in localized areas after jumping, making it difficult to create a dynamically suspended state with adjustable distribution within the chamber. Furthermore, particles tend to adhere to the chamber walls or near the electrodes under continuous electric field influence. Ultraviolet light or electron beam methods typically require irradiation equipment, and their operation mainly revolves around changing the charge state of the particles, limiting their ability to actively adjust the overall migration direction, suspension height, and spatial distribution of lunar dust within the chamber.

[0004] Therefore, in experimental scenarios requiring simulation of the long-term suspension, migration, and re-settling of lunar dust, relying solely on single methods such as vibration, airflow, electrostatics, or irradiation is insufficient to simultaneously meet the requirements of vacuum environment suitability, active activation of lunar dust deposits, spatial distribution adjustment of dust fields, and continuous dynamic maintenance. In particular, it is difficult to coordinate the movement of lunar dust in different areas based on the target dust concentration and distribution. In summary, existing technologies suffer from the limitation of making it difficult to uniformly agitate lunar dust and continuously form a controllable dynamic dust field in a vacuum environment. Summary of the Invention

[0005] To address the shortcomings of existing technologies where lunar dust is difficult to uniformly disperse and continuously form a controllable dynamic dust field in a vacuum environment, the technical solution provided by this invention is as follows: A dynamic dust agitation device based on a high-voltage alternating coil, comprising: Vacuum test chamber, coil array, tray, lunar dust layer, multi-channel high-voltage alternating power supply, control system and monitoring and feedback system; The vacuum test chamber has an interior space, the tray is located at the bottom of the interior space, the lunar dust layer is laid on the side of the tray facing the interior space, and the coil array is located on the side of the tray away from the lunar dust layer. The lunar dust layer, the tray, and the coil array are arranged opposite each other in sequence along the height direction. The coil array includes at least two sets of independent high-voltage alternating coils, each of which has an independent terminal. The multi-channel high-voltage alternating power supply includes multiple output channels connected to each of the independent terminals. The control system is connected to the control input terminal of the multi-channel high-voltage alternating power supply, the detection terminal of the monitoring and feedback system is set facing the cabin space above the lunar dust layer, and the signal output terminal of the monitoring and feedback system is connected to the control system.

[0006] Furthermore, in a preferred embodiment, a plurality of high-voltage alternating coils in the coil array are disposed on the side of the tray away from the lunar dust layer, and are arranged in rows and columns at intervals along the first direction and the second direction.

[0007] Furthermore, in a preferred embodiment, the high-voltage alternating coil is a planar coil, with the central region of the planar coil facing the lunar dust layer.

[0008] Furthermore, in a preferred embodiment, each output channel of the multi-channel high-voltage alternating power supply is electrically connected to the corresponding high-voltage alternating coil, and receives the voltage amplitude, frequency, waveform and phase control signals output by the control system.

[0009] Furthermore, in a preferred embodiment, the monitoring and feedback system includes a high-speed camera, a concentration sensor, and an electric field probe, and the signal output terminals of the high-speed camera, the concentration sensor, and the electric field probe are all connected to the control system.

[0010] Furthermore, in a preferred embodiment, the detection ends of the high-speed camera and the concentration sensor are positioned facing the cabin space above the lunar dust layer, and the detection end of the electric field probe is positioned facing the electric field region corresponding to the coil array.

[0011] A method for constructing a dust field, applied to the aforementioned apparatus, includes: The lunar dust layer is supported by the tray inside the vacuum test chamber, and the interior space of the vacuum test chamber is made into a target pressure environment. The control system sends a start-up excitation control signal to the multi-channel high-voltage alternating power supply, and the multi-channel high-voltage alternating power supply outputs a high-voltage alternating signal to the first group of high-voltage alternating coils in the coil array through at least one output channel, so that a non-uniform time-varying electric field is formed in the corresponding region of the lunar dust layer. The control system sends a dynamic sustaining control signal to the multi-channel high-voltage alternating power supply. The multi-channel high-voltage alternating power supply excites multiple sets of high-voltage alternating coils in the coil array sequentially or superimposed through multiple output channels, and adjusts the voltage amplitude, frequency, waveform or phase between each set of high-voltage alternating coils. The coil array forms a traveling wave electric field or a rotating electric field in the cabin space above the lunar dust layer, causing the lunar dust particles in the lunar dust layer to form a dynamic dust field in the cabin space. The monitoring and feedback system acquires the detection signal of the dynamic dust field and transmits the detection signal to the control system. The control system adjusts the output parameters of the multi-channel high-voltage alternating power supply according to the detection signal.

[0012] A computer storage medium for storing a computer program, which, when read by the computer, is executed by the computer using the method described thereon.

[0013] A computer, including a processor and a storage medium, executes the method when the processor reads a computer program stored in the storage medium.

[0014] A computer program product, which, as a computer program, implements the method when the computer program is executed.

[0015] Compared with the prior art, the advantages of the technical solution provided by the present invention are as follows: The sealed vacuum test chamber is used to contain lunar dust deposits and maintain a low-pressure or vacuum environment, allowing the lunar dust agitation process to be carried out in a closed environment similar to that required for lunar surface dust experiments. Compared to methods that rely on airflow purging, this structure allows the dust field to be constructed without relying on a gaseous medium as the primary momentum transfer condition, avoiding the problem of lunar dust being difficult to continuously agitate due to changes in environmental pressure conditions, and providing a stable experimental boundary for subsequent electric field agitation and space levitation.

[0016] The lunar dust deposition layer is laid on the bottom of the cabin or a specific load-bearing area, giving the particles to be stirred up a clear initial deposition location and field-affected area. This feature allows the non-uniform time-varying electric field generated by the high-voltage alternating coil array to be concentrated on the vicinity of the lunar dust deposition layer, prompting the deposited particles to detach from the substrate and reducing the inconsistency in the initial state of dust caused by random release or local accumulation.

[0017] The high-voltage alternating coil array consists of at least two sets of independently controllable coils, capable of generating non-uniform time-varying electric fields with varying spatial distributions within the cabin. When this electric field acts on charged or neutral lunar dust particles, it can induce the particles to jump, oscillate, and migrate through Coulomb force and dielectric force, thereby overcoming the limitations of the limited area of ​​action of simple mechanical disturbances and the relatively fixed direction of the unipolar electrostatic field, transforming the localized jumping of lunar dust into controlled spatial motion.

[0018] The coil array uses helical or planar coils and can be arranged below the hull, inside the bulkhead, or above the roof, allowing the electric field to be deployed around the lunar dust deposits and the interior space. This arrangement expands the coverage of the electric field on the lunar dust particles, ensuring that the particles are not only excited near the hull but also continuously disturbed at different heights and in different areas within the cabin, reducing the possibility that the lunar dust will only be stirred up in localized areas and then quickly settle.

[0019] A multi-channel high-voltage alternating power supply is connected to each group of coils and can independently adjust the output parameters of each channel, so that different coils can no longer only generate the same electric field synchronously. By differentiating the excitation of each group of coils, the electric field inside the cabin can form a spatial distribution that varies with time, thereby driving lunar dust particles to migrate between different areas, improving the problem that dust particles tend to concentrate in a fixed area when excited by a single electrode or a single path.

[0020] The independently adjustable voltage amplitude allows the intensity of the electric field applied to lunar dust particles by the coil array to vary depending on the target dust state. Higher amplitudes enhance the driving force for particles to detach from the sediment layer and rise into suspension, while lower amplitudes reduce localized concentration spikes caused by excessive agitation, providing an adjustable basis for dust concentration and suspension height.

[0021] The independently adjustable frequency allows the alternating electric field to change the oscillation response state of lunar dust particles. By adjusting the frequency, the response speed and oscillation amplitude of the particles in the electric field can be changed, so that lunar dust particles of different sizes, different charging states, or different polarization responses can obtain suitable excitation conditions, thus improving the problem that some particles have difficulty jumping or insufficient movement under fixed frequency excitation.

[0022] The ability to independently adjust the phase difference enables the formation of a directional, time-varying electric field distribution among multiple coils. Changes in phase difference can guide dust particles to drift, rotate, or reciprocate along specific directions, preventing lunar dust from being redeposited in the original area after being subjected only to a vertical or local electric field after takeoff. This is beneficial for forming a more macroscopically uniform dynamic dust field.

[0023] The adjustable waveform feature allows the high-voltage alternating power supply to provide different forms of electric field excitation according to the starting, maintenance, and redispersion requirements of lunar dust particles. Different waveforms, such as sine waves, square waves, or pulse waves, correspond to different electric field change rates and operating rhythms, enabling deposited particles to enter a suspended state under continuous or intermittent enhanced excitation, thus improving the device's adaptability to different dust field construction requirements.

[0024] The control method of sequentially switching or superimposing excitations from multiple sets of coils ensures that the electric field inside the cabin is not limited to a fixed position and acts continuously, but rather forms a continuously changing excitation path between different coil regions. This coordinated relationship can re-entrain and carry lunar dust that has settled or tended to accumulate locally to other areas, reducing the problem of long-term accumulation of lunar dust in corners or local areas of the cabin bottom.

[0025] Multiple coils are coordinated in phase to form a traveling wave electric field or a rotating electric field, causing lunar dust particles to continuously migrate, collide, and disperse within the chamber. Compared to a single-pole high-voltage electrostatic field, which mainly causes particles to jump once, the traveling wave or rotating electric field can provide conditions for lateral migration and cyclical disturbance of particles, making the dust field exhibit continuous dynamic changes, rather than rapidly decaying after a short period of dust generation.

[0026] The control system coordinates the voltage amplitude, frequency, waveform, and phase of each coil, enabling the dust agitation process to operate according to a preset timing and target state. This feature organizes the coil array and multi-channel high-voltage alternating power supply into a programmable overall excitation system, avoiding the disordered electric field distribution caused by isolated operation of each coil, thereby improving the repeatability and adjustability of the dust field construction process.

[0027] The monitoring and feedback system acquires information such as dust concentration, spatial distribution, and electric field state, and provides feedback signals to the control system, enabling the excitation parameters to be adjusted according to the actual state of the dust field. This closed-loop coordination can correct the coil output when dust particles gradually settle, the local concentration is too high, or the distribution is uneven, reducing the lag and instability caused by manual adjustment based on experience, and allowing the target dust field state to be maintained for a longer period of time.

[0028] High-speed cameras, dust concentration sensors, and electric field probes correspond to information on dust particle motion morphology, dust concentration, and electric field distribution, respectively, enabling the control system to obtain feedback beyond a single measurement. The combined effect of multiple monitoring types on excitation parameter adjustment helps distinguish between different states such as insufficient dust emission, localized dust accumulation, and abnormal electric field distribution, thus making the adjustment target more clearly defined.

[0029] The periodic change in the direction of the time-varying electric field can reduce the tendency for lunar dust particles to be drawn by the same direction of electric field for a long time near the electrodes or bulkhead. Compared with static or unidirectional high-voltage electric fields, alternating electric fields cause the polarization and stress state of particles to change continuously, reducing the tendency of dust particles to continuously adhere to the bulkhead or near the electrodes, which is beneficial to prolonging the duration of suspension and migration processes. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the embodiment; Figure 2 This is a top view of the arrangement of the high-voltage alternating coil array, specifically a 3×3 array, with some parts placed below the bottom of the cabin; Figure 3 This is a schematic diagram of the arrangement of a high-voltage alternating coil array; Figure 4 The image shows a comparison of dust field morphology at different frequencies and phase differences, where grayscale represents the distribution of particle concentration. Figure 5 This is a flowchart of the control system and feedback adjustment process.

[0031] Among them, 1 is the coil array, 2 is the tray, and 3 is the lunar dust layer. Detailed Implementation

[0032] To make the advantages and benefits of the technical solution provided by the present invention clearer, the technical solution provided by the present invention will now be described in further detail with reference to the accompanying drawings, specifically: Implementation Method 1: This implementation method provides a dynamic dust agitation device based on a high-voltage alternating coil, comprising: Vacuum test chamber, coil array, tray, lunar dust layer, multi-channel high-voltage alternating power supply, control system and monitoring and feedback system; The vacuum test chamber has an interior space, the tray is located at the bottom of the interior space, the lunar dust layer is laid on the side of the tray facing the interior space, and the coil array is located on the side of the tray away from the lunar dust layer. The lunar dust layer, the tray, and the coil array are arranged opposite each other in sequence along the height direction. The coil array includes at least two sets of independent high-voltage alternating coils, each of which has an independent terminal. The multi-channel high-voltage alternating power supply includes multiple output channels connected to each of the independent terminals. The control system is connected to the control input terminal of the multi-channel high-voltage alternating power supply, the detection terminal of the monitoring and feedback system is set facing the cabin space above the lunar dust layer, and the signal output terminal of the monitoring and feedback system is connected to the control system.

[0033] The multiple high-voltage alternating coils in the coil array are disposed on the side of the tray away from the lunar dust layer, and are arranged in rows and columns at intervals along the first and second directions.

[0034] The high-voltage alternating coil is a planar coil, and the central region of the planar coil is positioned facing the lunar dust layer.

[0035] Each output channel of the multi-channel high-voltage alternating power supply is electrically connected to the corresponding high-voltage alternating coil and receives the voltage amplitude, frequency, waveform and phase control signals output by the control system.

[0036] The monitoring and feedback system includes a high-speed camera, a concentration sensor, and an electric field probe. The signal output terminals of the high-speed camera, the concentration sensor, and the electric field probe are all connected to the control system.

[0037] The detection ends of the high-speed camera and the concentration sensor are positioned facing the cabin space above the lunar dust layer, and the detection end of the electric field probe is positioned facing the electric field region corresponding to the coil array.

[0038] A method for constructing a dust field, applied to the aforementioned apparatus, includes: The lunar dust layer is supported by the tray inside the vacuum test chamber, and the interior space of the vacuum test chamber is made into a target pressure environment. The control system sends a start-up excitation control signal to the multi-channel high-voltage alternating power supply, and the multi-channel high-voltage alternating power supply outputs a high-voltage alternating signal to the first group of high-voltage alternating coils in the coil array through at least one output channel, so that a non-uniform time-varying electric field is formed in the corresponding region of the lunar dust layer. The control system sends a dynamic sustaining control signal to the multi-channel high-voltage alternating power supply. The multi-channel high-voltage alternating power supply excites multiple sets of high-voltage alternating coils in the coil array sequentially or superimposed through multiple output channels, and adjusts the voltage amplitude, frequency, waveform or phase between each set of high-voltage alternating coils. The coil array forms a traveling wave electric field or a rotating electric field in the cabin space above the lunar dust layer, causing the lunar dust particles in the lunar dust layer to form a dynamic dust field in the cabin space. The monitoring and feedback system acquires the detection signal of the dynamic dust field and transmits the detection signal to the control system. The control system adjusts the output parameters of the multi-channel high-voltage alternating power supply according to the detection signal.

[0039] A computer storage medium for storing a computer program, which, when read by the computer, is executed by the computer using the method described thereon.

[0040] A computer, including a processor and a storage medium, executes the method when the processor reads a computer program stored in the storage medium.

[0041] A computer program product, which, as a computer program, implements the method when the computer program is executed.

[0042] Implementation Method Two: This implementation method is a further detailed description of the technical solution provided in Implementation Method One, specifically: In one embodiment, the lunar dust dynamic agitation device includes a vacuum test chamber, a coil array 1, a tray 2, a lunar dust layer 3, a monitoring and feedback system, a control system, a multi-channel high-voltage alternating power supply, and a vacuum pump assembly. The vacuum test chamber forms an interior space to accommodate the tray 2, the lunar dust layer 3, and the coil array 1. The tray 2 is located at the bottom of the vacuum test chamber, the lunar dust layer 3 is laid on the side of the tray 2 facing the interior space, and the coil array 1 is located on the side of the tray 2 away from the lunar dust layer 3.

[0043] The tray 2 mates with the bottom of the vacuum test chamber. The mounting surface of the tray 2 is used to support the lunar dust layer 3, and the side of the tray 2 away from the mounting surface is used to arrange the coil array 1. The lunar dust layer 3, the tray 2, and the coil array 1 are arranged sequentially along the height direction. The lunar dust layer 3 is located in the area above the coil array 1, and the tray 2 is located between the lunar dust layer 3 and the coil array 1, so that the coil array 1 and the lunar dust layer 3 are arranged at intervals.

[0044] The coil array 1 includes multiple high-voltage alternating coils, which are positioned on the side of the tray 2 away from the lunar dust layer 3 and opposite to the lunar dust layer 3 along the height direction. Each high-voltage alternating coil has an independent terminal, which is electrically connected to the corresponding output channel of the multi-channel high-voltage alternating power supply, enabling each high-voltage alternating coil to receive the high-voltage alternating signal output from the corresponding output channel.

[0045] In one embodiment, multiple high-voltage alternating coils in coil array 1 are arranged in rows and columns according to a first direction and a second direction. Coil array 1 includes C11, C12, C13, C21, C22, C23, C31, C32, and C33. C11, C12, and C13 are arranged sequentially along the first direction, C21, C22, and C23 are arranged sequentially along the first direction, and C31, C32, and C33 are arranged sequentially along the first direction. C11, C21, and C31 are arranged sequentially along the second direction, C12, C22, and C32 are arranged sequentially along the second direction, and C13, C23, and C33 are arranged sequentially along the second direction.

[0046] In another embodiment, some of the high-voltage alternating coils in the coil array 1 are spaced apart along a first direction on the side of the tray 2 away from the lunar dust layer 3. C21, C22, and C23 are located in different regions below the lunar dust layer 3 and are electrically connected to a multi-channel high-voltage alternating power supply through corresponding output channels. The phase of each output channel is independently adjustable, so that C21, C22, and C23 can form high-voltage alternating electric fields with different phases in corresponding regions of the lunar dust layer 3.

[0047] The vacuum test chamber is connected to a vacuum pump unit, which is in communication with the interior space of the vacuum test chamber and is used to evacuate the chamber. The vacuum pump unit is located on the outside of the vacuum test chamber, and the chamber has an interface for communication with the vacuum pump unit, so that the tray 2, the lunar dust layer 3, and the coil array 1 are located in the same space within the vacuum test chamber.

[0048] A multi-channel high-voltage alternating power supply is located outside the vacuum test chamber. The multi-channel high-voltage alternating power supply is electrically connected to coil array 1 through its high-voltage output. The high-voltage output passes through or enters the vacuum test chamber and is connected to each independent terminal of coil array 1, enabling the multi-channel high-voltage alternating power supply to output high-voltage alternating signals to each high-voltage alternating coil in coil array 1.

[0049] The control system uses a PLC or computer and is electrically connected to a multi-channel high-voltage alternating power supply. The control system sends voltage amplitude, frequency, waveform, and phase control signals to the multi-channel high-voltage alternating power supply. The multi-channel high-voltage alternating power supply adjusts each output channel according to the control signals and outputs the corresponding high-voltage alternating signal to coil array 1 through the high-voltage output.

[0050] The monitoring and feedback system includes a high-speed camera, a concentration sensor, and an electric field probe. The high-speed camera is positioned facing the space above the lunar dust layer 3 inside the vacuum test chamber to acquire information on the movement of lunar dust above the lunar dust layer 3; the concentration sensor is configured to detect the dust concentration in the space above the lunar dust layer 3; and the electric field probe is configured to detect the electric field state in the corresponding area of ​​the coil array 1. The high-speed camera, concentration sensor, and electric field probe are all connected to the control system signals.

[0051] The monitoring and feedback system transmits information on lunar dust movement obtained from high-speed cameras, dust concentration obtained from concentration sensors, and electric field state information obtained from electric field probes to the control system. The control system adjusts the output channels of the multi-channel high-voltage alternating power supply based on this information, enabling the voltage amplitude, frequency, waveform, and phase of different high-voltage alternating coils in coil array 1 to be adjusted according to the monitoring results.

[0052] The lunar dust layer 3 forms a lunar dust suspension space on the side facing the interior of the vacuum test chamber, and the coil array 1 is located on the side of the tray 2 away from the lunar dust layer 3. After the multi-channel high-voltage alternating power supply applies a high-voltage alternating signal to the coil array 1, the coil array 1 forms a high-voltage alternating electric field in the corresponding areas of the lunar dust layer 3 and the lunar dust suspension space. Under the action of the high-voltage alternating electric field, the lunar dust particles in the lunar dust layer 3 enter the lunar dust suspension space.

[0053] Coil array 1, tray 2, and lunar dust layer 3 form a lunar dust agitation structure within the vacuum test chamber. A multi-channel high-voltage alternating power supply and control system form an electric field excitation and control structure. A monitoring and feedback system, control system, multi-channel high-voltage alternating power supply, and coil array 1 form a feedback regulation structure. These structures cooperate with each other through high-voltage output and signal connections, enabling the dynamic dust field above lunar dust layer 3 to be constructed by the high-voltage alternating electric field generated by coil array 1.

[0054] In this embodiment, the dust field construction method is applied to a lunar dust dynamic agitation device based on high-voltage alternating coils. A tray is placed inside the vacuum test chamber, with a lunar dust layer laid on the side of the tray facing the chamber space, and a coil array is placed on the side of the tray away from the lunar dust layer. The coil array includes multiple sets of independent high-voltage alternating coils, each of which is electrically connected to a corresponding output channel of a multi-channel high-voltage alternating power supply. The multi-channel high-voltage alternating power supply is connected to a control system, and a monitoring and feedback system is connected to the control system.

[0055] When constructing a dynamic dust field, the lunar dust layer is first laid on the mounting surface of the tray, so that the lunar dust layer is located on the opposite side of the coil array along the height direction. The vacuum pump group connected to the vacuum test chamber is used to evacuate the space inside the chamber, so that the lunar dust layer, the tray and the coil array are in the same target pressure environment.

[0056] The control system sends a tripping excitation control signal to the multi-channel high-voltage alternating power supply, which selects the output channel corresponding to the first set of high-voltage alternating coils to output a high-voltage alternating signal. The first set of high-voltage alternating coils generates a non-uniform time-varying electric field in the corresponding region of the lunar dust layer, causing the lunar dust particles in the lunar dust layer to be affected by the electric field and detach from the tray support area.

[0057] After lunar dust particles enter the cabin space above the lunar dust layer, the control system sends dynamic maintenance control signals to the multi-channel high-voltage alternating power supply. The multi-channel high-voltage alternating power supply excites multiple sets of high-voltage alternating coils in the coil array sequentially or superimposed according to a preset timing sequence. Through differentiated outputs in voltage amplitude, frequency, waveform, and phase, the high-voltage alternating coils create a time-varying electric field distribution above the lunar dust layer.

[0058] In one specific embodiment, the coil array includes multiple sets of high-voltage alternating coils arranged in rows and columns along a first direction and a second direction. The control system creates a phase difference between adjacent high-voltage alternating coils, and a multi-channel high-voltage alternating power supply outputs high-voltage alternating signals to the coil array according to the phase corresponding to each output channel, thereby creating a traveling wave electric field or a rotating electric field above the lunar dust layer. Under the influence of the traveling wave electric field or the rotating electric field, lunar dust particles migrate, rotate, and disperse within the cabin space.

[0059] The monitoring and feedback system uses high-speed cameras to capture the movement of lunar dust particles within the cabin space, concentration sensors to acquire the dust concentration of the dynamic dust field, and electric field probes to acquire the electric field state of the corresponding area of ​​the coil array. The monitoring and feedback system transmits these detection signals to the control system, which then determines whether the dynamic dust field has reached the target state based on the detection signals.

[0060] When the dynamic dust field reaches the target state, the control system maintains the current output parameters of the multi-channel high-voltage alternating power supply and records the results. When the dynamic dust field does not reach the target state, the control system adjusts the output parameters of the multi-channel high-voltage alternating power supply, causing changes in the voltage amplitude, frequency, waveform, or phase of the corresponding high-voltage alternating coil, and then applies the coil array to the lunar dust layer and the cabin space above it, thereby completing the closed-loop regulation.

[0061] Implementation Method 3: This implementation method is described in detail with reference to the accompanying drawings. Specific embodiments are provided to further illustrate the technical solutions offered above. Specifically: The core of this implementation method lies in: arranging a high-voltage alternating coil array inside a sealed vacuum chamber, and applying a high-frequency, high-voltage, and phase-adjustable alternating voltage to the coils to form a dynamically changing electric field and polarization force in the chamber space. This causes charged or neutral lunar dust particles deposited at the bottom of the chamber to jump, oscillate, and migrate under the action of dielectric force and Coulomb force, ultimately forming a stable and uniform "dynamic dust field" in the entire chamber or a specific area.

[0062] The specific technical solution is as follows: A dynamic dust agitation device based on a high-voltage alternating coil, comprising: Vacuum test chamber: Used to contain lunar dust samples and maintain a low-pressure or vacuum environment.

[0063] Lunar dust deposition layer: Simulated lunar dust laid on the hull or in a specific container.

[0064] High-voltage alternating coil array: consisting of at least two sets of independently controllable helical coils or planar coils, arranged below the bottom of the compartment, inside the compartment wall, or above the top of the compartment.

[0065] Multi-channel high-voltage alternating power supply: electrically connected to the coil array, the voltage amplitude (0.1kV~50kV), frequency (50Hz~1MHz), waveform (sine wave, square wave, triangle wave) and phase difference (0~360°) of each output can be adjusted independently.

[0066] Control system: including PLC or computer, used to coordinate the control of the excitation parameters of each coil.

[0067] Monitoring and feedback system: including high-speed camera, dust concentration sensor and electric field probe, used to acquire dust field distribution information in real time and adjust excitation parameters in a closed loop.

[0068] The method for constructing a dynamic dust field includes the following steps: S1. Initial Deposition: A certain thickness of dry lunar dust simulation material is evenly spread at the bottom of the vacuum chamber, and the chamber is evacuated to the target pressure (e.g., 10). - ³ Pa ~ 10 5 Pa).

[0069] S2. Jumping Excitation: Start the high-voltage alternating power supply and apply a high-voltage high-frequency signal (e.g., amplitude 5kV, frequency 20kHz) to the first set of coils to generate a strong non-uniform time-varying electric field. The local electric field gradient force breaks through the adhesion force and gravity between the lunar dust particles and the substrate, causing the dust particles to jump.

[0070] S3. Dynamic maintenance: The control system switches or superimposes the excitation of the second and third groups of coils according to a preset timing sequence, and adjusts their voltage amplitude, frequency and phase difference.

[0071] The oscillation amplitude and response speed of dust particles are controlled by adjusting the frequency (the motion is enhanced near the resonant frequency).

[0072] By adjusting the phase difference, dust particles are guided to drift or rotate in a specific direction within the chamber, thus avoiding single-point settling.

[0073] The dust concentration and suspension height are controlled by adjusting the amplitude.

[0074] S4. Dust field homogenization and stabilization: By utilizing the traveling wave electric field or rotating electric field effect generated by multiple sets of coils, dust particles continuously migrate, collide, and disperse throughout the entire space, forming a "dust field" that is macroscopically stable and microscopically dynamic.

[0075] S5. Closed-loop regulation: The monitoring system feeds back the dust concentration and spatial distribution uniformity data to the control system in real time. The system automatically fine-tunes the output parameters of each coil to maintain the target dust field status.

[0076] Beneficial effects: Highly efficient agitation: Utilizing the dielectric force and resonance effect in an alternating electric field, it has a good agitation effect on lunar dust (including weakly charged and neutral particles) ranging from micrometers to submillimeters, and does not rely on airflow in a vacuum environment.

[0077] Dynamically controllable: Through multi-coil arrays and phase modulation, standing wave, traveling wave or rotating dynamic electric fields can be generated, so that lunar dust forms a uniform suspension field similar to "smoke" or "dust storm".

[0078] Avoid adsorption: The periodic change in the direction of the time-varying electric field effectively inhibits the adsorption of lunar dust onto the electrodes or cabin walls after prolonged polarization, thus extending the suspension duration.

[0079] Wide range of applications: It can simulate different gravity environments (by adjusting the intensity of the agitation) and support scientific research on extreme dust environments such as the moon and asteroids.

[0080] Parameters are quantifiable: By adjusting the voltage, frequency, and phase, dust concentration (mg / m³) and particle size distribution can be quantitatively controlled to meet standardized testing requirements.

[0081] In a specific embodiment: Example 1: Basic Single-Cavity Four-Electrode Coil Device Device structure: Vacuum chamber: Stainless steel cylindrical chamber, 600mm in diameter and 500mm in height.

[0082] Lunar dust sample: JSC-1A simulated lunar dust, with a particle size distribution of 1~100μm, laid with a thickness of 5mm on the insulating tray at the bottom of the cabin.

[0083] Coil array: 4 planar spiral coils (copper wire wound, inner diameter 50mm, outer diameter 150mm, number of turns 20) are symmetrically embedded 10mm below the tray.

[0084] High voltage power supply: Four-channel independent output sine wave, amplitude 0~20kV, frequency 10Hz~100kHz, phase adjustable (accuracy 1°).

[0085] Operation process: Vacuum level 10 - 2 Pa.

[0086] Initial parameters are set as follows: all coil amplitudes are 8kV, frequency is 25kHz, and phase differences are 0°, 90°, 180°, and 270° respectively.

[0087] Turn on the power and observe the dust particles jump and rotate as a whole within 30 seconds.

[0088] After maintaining the parameters for 5 minutes, the dust field evenly covered a 300mm diameter area in the middle of the chamber, and the concentration stabilized at ~200mg / m³.

[0089] Adjusting the frequency to 35kHz (close to the polarization resonance frequency of lunar dust) increased the dust concentration to 480mg / m³ and the suspension height to 150mm.

[0090] Results: Compared with the traditional DC high voltage method, the uniformity of dust dispersion is improved by 3 times and the dust particle adsorption chamber wall rate is reduced by 70%.

[0091] Example 2: Programmable Dynamic Dust Field (Traveling Wave Control) Based on Example 1, the control system program is set as follows: First coil group (rear left): Maintain amplitude of 6kV and frequency of 30kHz.

[0092] The second group of coils (right rear): the voltage phase lags the first group by 60°.

[0093] Third coil group (front left): 120° lag.

[0094] Fourth coil group (front right): 180° lag.

[0095] Every 10 seconds, the overall phase reference advances 60° to simulate the rotation direction of the "traveling wave electric field".

[0096] Results: Lunar dust exhibits a large-scale clockwise drifting motion, which can effectively re-entrain dust particles settled in the corners and bring them back to the central area, achieving a continuous dynamic dust field without replenishment for a long time (>2 hours).

[0097] The above description of several specific embodiments further details the technical solution provided by the present invention in order to highlight the advantages and benefits of the technical solution provided by the present invention. However, the above-described specific embodiments are not intended to limit the present invention. Any reasonable modifications and improvements to the present invention, combinations of embodiments, and equivalent substitutions based on the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dynamic dust agitation device based on a high-voltage alternating coil, characterized in that, include: Vacuum test chamber, coil array, tray, lunar dust layer, multi-channel high-voltage alternating power supply, control system and monitoring and feedback system; The vacuum test chamber has an interior space, the tray is located at the bottom of the interior space, the lunar dust layer is laid on the side of the tray facing the interior space, and the coil array is located on the side of the tray away from the lunar dust layer. The lunar dust layer, the tray, and the coil array are arranged opposite each other in sequence along the height direction. The coil array includes at least two sets of independent high-voltage alternating coils, each of which has an independent terminal. The multi-channel high-voltage alternating power supply includes multiple output channels connected to each of the independent terminals. The control system is connected to the control input terminal of the multi-channel high-voltage alternating power supply, the detection terminal of the monitoring and feedback system is set facing the cabin space above the lunar dust layer, and the signal output terminal of the monitoring and feedback system is connected to the control system.

2. The dynamic dust agitation device based on a high-voltage alternating coil according to claim 1, characterized in that, The multiple high-voltage alternating coils in the coil array are disposed on the side of the tray away from the lunar dust layer, and are arranged in rows and columns at intervals along the first and second directions.

3. The dynamic dust agitation device based on a high-voltage alternating coil according to claim 1, characterized in that, The high-voltage alternating coil is a planar coil, and the central region of the planar coil is positioned facing the lunar dust layer.

4. The dynamic dust agitation device based on a high-voltage alternating coil according to claim 1, characterized in that, Each output channel of the multi-channel high-voltage alternating power supply is electrically connected to the corresponding high-voltage alternating coil and receives the voltage amplitude, frequency, waveform and phase control signals output by the control system.

5. The dynamic dust agitation device based on a high-voltage alternating coil according to claim 1, characterized in that, The monitoring and feedback system includes a high-speed camera, a concentration sensor, and an electric field probe. The signal output terminals of the high-speed camera, the concentration sensor, and the electric field probe are all connected to the control system.

6. The dynamic dust agitation device based on a high-voltage alternating coil according to claim 5, characterized in that, The detection ends of the high-speed camera and the concentration sensor are positioned facing the cabin space above the lunar dust layer, and the detection end of the electric field probe is positioned facing the electric field region corresponding to the coil array.

7. A method for constructing a dust field, characterized in that, Applied to the apparatus of claim 1, characterized in that it comprises: The lunar dust layer is supported by the tray inside the vacuum test chamber, and the interior space of the vacuum test chamber is made into a target pressure environment. The control system sends a start-up excitation control signal to the multi-channel high-voltage alternating power supply, and the multi-channel high-voltage alternating power supply outputs a high-voltage alternating signal to the first group of high-voltage alternating coils in the coil array through at least one output channel, so that a non-uniform time-varying electric field is formed in the corresponding region of the lunar dust layer. The control system sends a dynamic sustaining control signal to the multi-channel high-voltage alternating power supply. The multi-channel high-voltage alternating power supply excites multiple sets of high-voltage alternating coils in the coil array sequentially or superimposed through multiple output channels, and adjusts the voltage amplitude, frequency, waveform or phase between each set of high-voltage alternating coils. The coil array forms a traveling wave electric field or a rotating electric field in the cabin space above the lunar dust layer, causing the lunar dust particles in the lunar dust layer to form a dynamic dust field in the cabin space. The monitoring and feedback system acquires the detection signal of the dynamic dust field and transmits the detection signal to the control system. The control system adjusts the output parameters of the multi-channel high-voltage alternating power supply according to the detection signal.

8. A computer storage medium for storing computer programs, characterized in that, When the computer program is read by the computer, the computer executes the method of claim 7.

9. A computer, comprising a processor and a storage medium, characterized in that, When the processor reads the computer program stored in the storage medium, the computer executes the method of claim 7.

10. A computer program product, as a computer program, is characterized by: When the computer program is executed, it implements the method of claim 7.

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