Electromagnetically actuated flag controlled flying system on extraterrestrial bodies

Abstract

The application relates to a flag controlled flying system based on electromagnetic actuation on an extraterrestrial object and belongs to the technical field of aerospace engineering. The application aims at solving the problem that the flying state of a flag on an extraterrestrial object is uncontrollable. The application comprises a flag support, a flag, a magnetic unit and a controller. The flag support is used for supporting the edge of the flag, a free area of the flag is penetrated by a metal wire, and the metal wire has two outer connecting ends. The magnetic unit is arranged close to the flag and is used for providing a magnetic field for the metal wire, so that when the metal wire is penetrated by alternating current, the metal wire interacts with the magnetic field to generate an ampere force, thereby driving the flag to fly. The controller is used for modulating direct current provided by a power supply into alternating current and supplying power to the metal wire through the two outer connecting ends, so that the current size, the waveform and the frequency of the metal wire meet the set current parameters, the flag reciprocates and swings, and the flag presents an expected flying state. The application is used for realizing the control of the state of the flag on the extraterrestrial object.

Description

Technical Field

[0001] This invention relates to a controlled flag-waving system based on electromagnetic actuation on extraterrestrial bodies, belonging to the field of aerospace engineering technology. Background Technology

[0002] During the Apollo moon landing, astronauts manually inserted flagpoles into the lunar surface, creating a waving effect by causing the flag to sway due to inertia. This method produced an uncontrolled waving effect; the waving would stop once the flag's kinetic energy was completely dissipated, and it was impossible to control the waving for multiple periods. Summary of the Invention

[0003] To address the problem of uncontrollable flag waving on extraterrestrial bodies, this invention provides a controlled flag waving system based on electromagnetic actuation on extraterrestrial bodies.

[0004] The present invention discloses an electromagnetically actuated controlled flag-waving system for extraterrestrial bodies, comprising a flag support, a flag, a magnetic unit, and a controller.

[0005] The flag support is used to support the edge of the flag. A metal wire passes through the free area of ​​the flag and has two external connection ends. The magnet unit is arranged close to the flag to provide a magnetic field for the metal wire. When an alternating current is passed through the metal wire, it interacts with the magnetic field to generate an Ampere force, which causes the flag to flutter.

[0006] The controller modulates the DC power supplied by the power source into AC power and supplies power to the metal wires through two external connection terminals, so that the current magnitude, waveform and frequency of the metal wires meet the set current parameters, causing the flag to swing back and forth, presenting the expected fluttering state.

[0007] According to the present invention, the flag-controlled waving system based on electromagnetic actuation on an extraterrestrial body includes a flag support comprising a vertical pole and a horizontal pole, wherein the end of the vertical pole is fixedly connected to one end of the horizontal pole so that the vertical pole and the horizontal pole are connected at a right angle.

[0008] The flag's white sleeve is attached to the vertical pole, and the top edge of the flag is fixed to the horizontal pole, the length of which is the same as the length of the flag.

[0009] According to the present invention, a flag-controlled waving system based on electromagnetic actuation on an extraterrestrial body has a flag with four corners, three of which are fixed on a flag support and the fourth corner is a free corner; the wire area formed by the metal wires in the free area of ​​the flag is close to the free corner of the flag.

[0010] According to the present invention, the electromagnetically actuated controlled flag-waving system on an extraterrestrial body comprises a conductor region formed by multiple conductors arranged in parallel along the length of the flag, and the extension direction of each conductor is parallel to the width direction of the flag.

[0011] According to the present invention, the electromagnetically actuated controlled flag waving system on an extraterrestrial body includes a magnetic steel unit comprising a magnetic steel frame and a rectangular magnet, wherein the rectangular magnet is fixed inside the magnetic steel frame; the magnetic steel frame is disposed on a flag support and arranged close to the flag.

[0012] According to the present invention, the electromagnetically actuated controlled flag waving system on an extraterrestrial body has the magnetic steel frame located behind the flag, the direction of the N-S pole connection of the magnet is along the length of the flag, and the normal vector is a vector perpendicular to the surface corresponding to the N-S pole connection of the magnet; the larger surface of the magnet is opposite to the flag, so that the magnetic field lines in the conductor region are approximately parallel to the surface of the flag.

[0013] According to the present invention, in an electromagnetically actuated controlled flag-waving system on an extraterrestrial body, the conductive area is positioned opposite to the rectangular magnet and their dimensions are approximately the same.

[0014] According to the present invention, a flag-controlled fluttering system based on electromagnetic actuation on an extraterrestrial body, wherein the magnetic frame is located on the white side of the flag cover, and the plane of the magnetic frame is perpendicular to the flag.

[0015] The direction of the N and S poles of the magnet is along the length of the flag, and the magnetic field lines in the conductor area are approximately parallel to the surface of the flag.

[0016] According to the present invention, the controlled flag waving system based on electromagnetic actuation on an extraterrestrial body, wherein the waveform of the alternating current is a square wave, a triangular wave, or a sine wave.

[0017] According to the present invention, a flag-controlled waving system based on electromagnetic actuation on an extraterrestrial body changes the waving state of the flag by changing the frequency of the alternating current during the waving process.

[0018] The beneficial effects of this invention are as follows: This invention achieves control over the state of a flag on an extraterrestrial body based on electromagnetic actuation, making the waving shape of the flag controllable and enabling repeated control.

[0019] This invention achieves controlled flag waving through electromagnetic actuation, applicable to various gravitational fields, atmospheric conditions, or vacuum environments on extraterrestrial bodies. It employs electromagnetic actuation to enable flags to achieve a waving effect similar to that on Earth's surface under microgravity, atmospheric absence, or thin atmosphere conditions on extraterrestrial bodies. The system can control the flag to complete waving actions multiple times according to actual needs and can adjust the flag waving effect to adapt to the specific conditions of different planets. Attached Figure Description

[0020] Figure 1 This is a structural block diagram of the electromagnetically actuated controlled flag waving system on an extraterrestrial body as described in this invention;

[0021] Figure 2 This is a structural diagram of a flag;

[0022] Figure 3 This is a structural diagram of the flag support in the first arrangement scheme of the magnet; where 110 is the vertical bar, 120 is the horizontal bar, and 310 is the magnet frame;

[0023] Figure 4 This is a schematic diagram showing the relative positions of the magnets and the flag when the first arrangement of the magnets is used;

[0024] Figure 5 This is a schematic diagram showing the relative positions of the magnets and the flag when the second arrangement of the magnets is used;

[0025] Figure 6 This is a structural diagram of the flag support in the second arrangement scheme of the magnets;

[0026] Figure 7 This is a schematic diagram of a square wave waveform of alternating current; in the diagram, I represents current, and f1-f4 represent different frequencies corresponding to each waveform period. Detailed Implementation

[0027] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0030] Specific Implementation Method 1: Combination Figure 1 and Figure 2 As shown, this invention provides a flag-controlled waving system based on electromagnetic actuation on an extraterrestrial body, including a flag support 100, a flag 200, a magnet unit 300, and a controller 400.

[0031] The flag support 100 is used to support the edge of the flag 200. A metal wire passes through the free area of ​​the flag 200 and the metal wire has two external connection ends. The magnet unit 300 is arranged close to the flag 200 to provide a magnetic field for the metal wire. When alternating current is passed through the metal wire, it interacts with the magnetic field to generate an Ampere force, which causes the flag 200 to flutter.

[0032] The controller 400 modulates the DC power supplied by the power source into AC power and supplies power to the metal wire through two external connection terminals, so that the current magnitude, waveform and frequency of the metal wire meet the set current parameters, causing the flag 200 to swing back and forth, presenting the expected fluttering state.

[0033] This embodiment is used to control the waving of a flag on an extraterrestrial body. The waving of the flag 200 mainly relies on the Ampere force generated by electromagnetic interaction. Therefore, by inserting conductive material into the flag and placing a magnet near the flag to provide a magnetic field, the flag can be made to flutter by passing alternating current through the conductive material on the flag.

[0034] In this embodiment, the power supply and the wires serve as components that provide energy and ensure circuit continuity, respectively.

[0035] As an example, combined Figure 3 and Figure 6 As shown, the flag support 100 includes a vertical pole and a horizontal pole, with the end of the vertical pole fixedly connected to one end of the horizontal pole so that the vertical pole and the horizontal pole are connected at a right angle.

[0036] The white sleeve of flag 200 is attached to the vertical pole, and the upper edge of flag 200 is fixed to the horizontal pole to prevent the flag from drooping. The length of the horizontal pole is the same as the length of flag 200, and the length of the vertical pole can be adjusted according to the actual display needs.

[0037] In this embodiment, the bottom end of the vertical pole is used to insert into the ground and fix it in place. If necessary, a base can be provided for the flag support 100, and the top end of the vertical pole is fixedly connected to the base, thus securing it to the ground.

[0038] The flag holder 100 supports the flag and the magnet, ensuring their relative positional stability. (Combined with...) Figure 3 and Figure 6 As shown, the flag support 100 adopts an "L" shape design to prevent the flag from drooping naturally under vacuum conditions such as the moon, thus ensuring the flag display effect.

[0039] Furthermore, combined with Figure 4 and Figure 5 As shown, the flag 200 has four corners, three of which are fixed on the flag support 100 and the fourth corner is a free corner; the wire area formed by the metal wire in the free area of ​​the flag 200 is close to the free corner of the flag 200.

[0040] Combination Figure 2As shown, the metal wire can be sewn in from the back of the flag, with both ends extending out of the flag surface as connection points to the controller. Assuming the flag is L long and W wide, the wire area is L1 from the left edge of the flag and W1 from the top edge, with the wire distribution area measuring L2 long and W2 wide. L1 and W1 should be as large as possible, meaning the wire area should be as close as possible to the lower right corner of the flag. L2 and W2 should be as consistent as possible with the corresponding surface dimensions of the magnet to maximize the use of the magnetic field and avoid Ampere forces in unfavorable directions.

[0041] In this embodiment, combined with Figure 4 and Figure 5 As shown, the conductor area is formed by multiple conductors arranged in parallel along the length of the flag 200, and the extension direction of each conductor is parallel to the width direction of the flag 200.

[0042] Although the closer the guide area is to the free corner of the flag, the better the waving effect; in actual use, the position of the guide area can be adjusted appropriately according to the display effect of the pattern on the flag and the layout of the hardware equipment, so as not to affect the display of the flag pattern and the use of the hardware equipment.

[0043] Furthermore, combining Figure 3 and Figure 6 As shown, the magnet unit 300 includes a magnet frame and a rectangular magnet, with the rectangular magnet fixed inside the magnet frame; the magnet frame is mounted on the flag support 100 and arranged close to the flag 200.

[0044] The rectangular magnet can be a rubidium magnet. Placing the rubidium magnet near the flag generates a magnetic field B, through which positive and negative currents I are passed. According to Ampere's law, the Ampere force F = BIL0, where L0 is the effective length of the conductor. When the conductor is energized, it experiences an Ampere force, causing the flag to swing to one side. When the current direction changes, the flag swings to the other side. By switching the current direction at a certain frequency, the flag can swing back and forth, producing the "fluttering" effect.

[0045] In this embodiment, the magnet arrangement includes two options:

[0046] The first type: combination Figure 3 and Figure 4 As shown, the magnet frame is located behind the flag 200. The direction of the line connecting the N and S poles of the magnet is along the length of the flag, and the normal vector is a vector perpendicular to the surface corresponding to the line connecting the N and S poles of the magnet. The larger surface of the magnet faces the flag 200, thereby providing the flag with a greater magnetic induction intensity and making the magnetic field lines in the conductor region approximately parallel to the surface of the flag 200. The position of the magnet and the corresponding magnetic field distribution are as follows. Figure 4 As shown.

[0047] In the first scheme, the conductor region is positioned opposite the rectangular magnet, and their dimensions are approximately the same.

[0048] In this design, the magnetic steel frame is located behind the flag 200 and is just obscured by the flag in the front view. On the one hand, it can provide a magnetic field for the flag, and on the other hand, it can be obscured by the flag, making the visual effect more aesthetically pleasing.

[0049] Figure 4 The magnet arrangement shown allows the magnetic field lines near the conductive material on the flag to be approximately parallel to the flag surface, making the magnets closer to the conductive material area.

[0050] In this scheme, the position of the magnet can be flexibly changed. The "side" of the magnet is used to make the magnetic field lines near the flag parallel to the flag. By moving the position of the magnet, a magnetic field can be provided for different areas of the flag. The magnitude of the magnetic field is only related to the distance of the magnet from the flag and the magnetic moment of the magnet.

[0051] The second type, combining Figure 5 and Figure 6 As shown, the magnetic frame is located on the white side of the flag 200, and the plane of the magnetic frame is perpendicular to the flag 200.

[0052] The direction of the N and S poles of the magnet is along the length of the flag, and the magnetic field lines in the conductor area are approximately parallel to the surface of the flag 200.

[0053] In this design, the arrangement of the magnets ensures that the magnetic field lines near the conductive material are parallel to the flag surface, guaranteeing that the direction of the Ampere force meets the requirements. This design directly utilizes the magnetic field lines emitted by the N or S poles of the magnets, providing a stronger magnetic field aligned with the desired direction at the same distance. When the conductive material is far from the vertical pole, a magnet with a larger magnetic moment is required to ensure the magnetic field strength.

[0054] In this embodiment, the controller is responsible for modulating the DC current input to the power supply, adjusting it to AC current of a specific frequency. This specific frequency can be a suitable frequency determined through observation of the effect during power-on testing, reflecting the target display state. According to Ampere's law, the Ampere force on the flag is independent of voltage but related to current. Therefore, the design parameters for the current during the design process are current magnitude, waveform, and frequency. The current magnitude and frequency are determined based on the size and mechanical properties of the flag fabric, and a certain range of random fluctuations in the current frequency can be selected according to the actual display effect of the flag. The current waveform can directly use a square wave, or it can be adjusted to a triangular wave, sine wave, etc., according to the actual properties of the fabric and display requirements. Figure 7 The image shown is an example of a square wave current waveform.

[0055] Figure 7As shown, the AC current output by the controller corresponds to a time of 1 / f for each cycle. The duration of each cycle of the AC current can be adjusted according to actual needs. The duration of each cycle can be set to be the same, that is, the controller outputs a fixed frequency current; or the duration of each cycle can be made different according to actual needs, that is, each cycle corresponds to a different frequency f1-f4. By outputting a variable frequency current, the force on the flag can be made more varied, and different waving effects can be achieved.

[0056] In this embodiment, the waving state of the flag 200 is changed by altering the frequency of the alternating current during the waving process.

[0057] Methods for determining current parameters include:

[0058] By passing currents of different waveforms and frequencies through a metal conductor and comparing the flag's waving state, the current parameter closest to the expected waving state can be selected. For flags of different thicknesses and materials, the suitable frequency varies; the current parameter can be determined through extensive testing.

[0059] For example, an initial current can be passed through a metal wire and the effect observed. If a larger swaying amplitude is desired, the current and magnetic field strength can be increased, and vice versa. If a more violent swaying is desired, the current frequency can be increased, and vice versa. Specific implementation examples:

[0061] Take, for example, driving a flag to fly on the moon:

[0062] The design includes a lunar flag-flying system, comprising a flag, a support frame, magnets, a controller, and wires, with DC power supplied directly by the probe.

[0063] The flag dimensions are designed according to actual needs as L=125mm and W=83mm, with the corresponding other flag dimensions as L1=30mm, L2=10mm, W1=38mm, and W2=40mm.

[0064] The magnetic moment of the magnet is 3.5 Am. 2 The distance from the back of the flag is 10mm, and the dimensions of the face facing the flag are 10mm*25mm.

[0065] The energizing current is a square wave AC current of 4A with an alternating frequency of 4-6Hz.

[0066] Under these conditions, the flag can move back and forth about 20mm at the lower right corner, achieving a good waving effect.

[0067] In summary, this invention utilizes electromagnetic interaction to achieve a fluttering effect on sheet-like fabrics such as flags. By fixing conductive materials to the flag and allowing them to interact with a surrounding magnetic field, various fluttering patterns can be achieved by adjusting the input current waveform. This invention enables controlled flag fluttering, allowing for multiple fluttering displays at different times according to actual needs. A support structure maintains a stable relative position between the electrical and magnetic elements, ensuring consistent fluttering effects under the same current input. The magnitude, frequency, and waveform of the current can be designed according to specific conditions to achieve different fluttering effects, adapting to flags of different sizes and mechanical properties, as well as the gravity and atmospheric environments of different planets. This invention can subsequently be used for flag displays for various deep space exploration missions, such as those on the Moon and Mars.

[0068] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A flag-controlled waving system based on electromagnetic actuation on an extraterrestrial body, characterized in that... It includes a flag holder (100), a flag (200), a magnet unit (300), and a controller (400). The flag support (100) is used to support the edge of the flag (200), and a metal wire passes through the free area of ​​the flag (200), and the metal wire has two external connecting ends; The magnet unit (300) is arranged close to the flag (200) to provide a magnetic field for the metal wire, so that when the metal wire is energized with alternating current, it interacts with the magnetic field to generate an Ampere force, which causes the flag (200) to flutter. The controller (400) modulates the DC power supplied by the power supply into AC power and supplies power to the metal wire through two external connection terminals, so that the current magnitude, waveform and frequency of the metal wire meet the set current parameters, so that the flag (200) swings back and forth and presents the expected fluttering state; The flag (200) has four corners, three of which are fixed on the flag support (100) and the fourth corner is a free corner; the wire area formed by the metal wires in the free area of ​​the flag (200) is close to the free corner of the flag (200).

2. The electromagnetically actuated controlled flag-waving system on an extraterrestrial body according to claim 1, characterized in that, The flag support (100) includes a vertical pole and a horizontal pole, with the end of the vertical pole fixedly connected to one end of the horizontal pole so that the vertical pole and the horizontal pole are connected at a right angle; The white sleeve of the flag (200) is attached to the vertical pole, and the upper edge of the flag (200) is fixed to the horizontal pole, the length of which is the same as the length of the flag (200).

3. The electromagnetically actuated controlled flag-waving system on an extraterrestrial body according to claim 2, characterized in that, The conductor area is formed by multiple conductors arranged in parallel along the length of the flag (200), and the extension direction of each conductor is parallel to the width direction of the flag (200).

4. The electromagnetically actuated controlled flag-waving system on an extraterrestrial body according to claim 3, characterized in that, The magnet unit (300) includes a magnet frame and a rectangular magnet, the rectangular magnet being fixed inside the magnet frame; the magnet frame is set on the flag support (100) and arranged close to the flag (200).

5. The electromagnetically actuated controlled flag-waving system on an extraterrestrial body according to claim 4, characterized in that, The magnet frame is located behind the flag (200). The direction of the N-S pole connection of the magnet is along the length of the flag, and the normal vector is a vector perpendicular to the surface corresponding to the N-S pole connection of the magnet. The larger surface of the magnet is opposite to the flag (200), so that the magnetic field lines in the conductor area are approximately parallel to the surface of the flag (200).

6. The electromagnetically actuated controlled flag-waving system on an extraterrestrial body according to claim 5, characterized in that, The conductor region is positioned opposite the rectangular magnet and their dimensions are approximately the same.

7. The electromagnetically actuated controlled flag-waving system on an extraterrestrial body according to claim 4, characterized in that, The magnetic steel frame is located on the white side of the flag (200), and the plane of the magnetic steel frame is perpendicular to the flag (200); The direction of the N and S poles of the magnet is along the length of the flag, and the magnetic field lines in the conductor area are approximately parallel to the surface of the flag (200).

8. The electromagnetically actuated controlled flag-waving system on an extraterrestrial body according to claim 1, characterized in that, The waveform of the alternating current is a square wave, a triangular wave, or a sine wave.

9. The electromagnetically actuated controlled flag-waving system on an extraterrestrial body according to claim 1, characterized in that, During the waving of the flag (200), the waving state of the flag (200) is changed by altering the frequency of the alternating current.

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