A continuous emission type small electromagnetic gun and a control method thereof

Abstract

The present application relates to electromagnetic gun technical field, specifically to a kind of continuous launch type small electromagnetic gun and control method thereof.Continuous launch type small electromagnetic gun includes magazine, launch cannon tube, spring blocking device, energization component, several electromagnetic coils;Several metal bullets are provided in the magazine, and the metal bullets are arranged from top to bottom in the magazine, and the bottom of the magazine is provided with bullet outlet;Several electromagnetic coils are sequentially arranged in the periphery of launch cannon tube;The electromagnetic coil includes first-stage coil;Spring blocking device includes spring, movable support, fixed support, rotating bearing.The continuous launch type small electromagnetic gun of the present application, by designing the magazine in the vicinity of first-stage coil, utilizes the characteristics that Lorentz force is smaller in the periphery of first-stage coil, develops the technology that bullet is sucked into launch cannon tube;Spring blocking device blocks metal bullet in first-stage coil, and realizes automatic loading and automatic launching function in cooperation with bullet suction technology.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic railgun technology, specifically to a continuously firing miniature electromagnetic railgun and its control method. Background Technology

[0002] An electromagnetic railgun is an advanced kinetic energy weapon that uses electromagnetic propulsion to drive projectiles. It utilizes the Ampere force generated by the electromagnetic field in an electromagnetic system to accelerate a metal projectile, giving it the kinetic energy required to strike its target. Compared to traditional gunpowder-propelled cannons, electromagnetic railguns can generate thrust rapidly, offering advantages such as high accuracy and speed. However, like traditional artillery, some electromagnetic railguns cannot fire continuously and require manual reloading. This limitation has become one of the reasons hindering the widespread application of electromagnetic railguns, making the development of continuous-fire technology a crucial issue for their widespread adoption.

[0003] Small electromagnetic railguns launch metal projectiles using the Lorentz force, offering advantages such as low noise and high speed. However, existing small electromagnetic railguns require manual reloading after each firing, resulting in wasted personnel and time. In particular, for remotely controlled electromagnetic railguns, the lack of continuous firing capability significantly reduces their applicability. Therefore, given the promising future of electromagnetic launch devices, electromagnetic launch guns are expected to replace traditional electromagnetic, compressed air, and gunpowder launches, necessitating the development of electromagnetic structures with continuous firing capabilities.

[0004] Therefore, it is necessary to design a small, continuously firing electromagnetic railgun. Summary of the Invention

[0005] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a continuously firing small electromagnetic railgun and its control method.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A continuous-fire small electromagnetic gun, comprising a magazine, a firing barrel, a spring blocking device, an energizing assembly, and several electromagnetic coils; The magazine contains a number of metal bullets arranged from top to bottom. The bottom of the magazine has an exit port that is connected to the firing barrel. Several electromagnetic coils are sequentially arranged around the periphery of the firing barrel; each electromagnetic coil includes a first-stage coil, the left end of which is connected to the magazine and the right end of which is connected to the spring blocking device. The spring blocking device includes a spring, a movable bracket, a fixed bracket, and a rotary bearing. The fixed bracket is disposed on the first-stage coil, and the movable bracket is connected to the fixed bracket through the rotary bearing. One end of the spring is connected to the fixed bracket, and the other end is connected to the movable bracket. The bottom of the firing barrel is provided with an opening, and the movable bracket extends into the opening to block the metal bullet. The energizing component is electrically connected to the electromagnetic coil and energizes the electromagnetic coil. The first-stage coil can apply a Lorentz force to the metal bullet at the bottom of the magazine, drawing the metal bullet into the firing barrel.

[0007] Furthermore, the power-on component includes a power interface for connecting an external power source.

[0008] Furthermore, the energized component includes a capacitor, which is electrically connected to the electromagnetic coil.

[0009] Furthermore, the energizing component includes a switch button, which is used to turn on the energizing component to supply power to the electromagnetic coil.

[0010] Furthermore, the metal bullet is an aluminum bullet.

[0011] Furthermore, both the magazine and the spring blocking device are made of materials that do not generate electromagnetic induction.

[0012] The present invention also provides a control method for a continuously firing miniature electromagnetic railgun, comprising the following steps: Step 1: Load several metal bullets into the magazine, connect the power interface to an external power source to energize the electromagnetic coil, and apply a Lorentz force to the bottom metal bullet, drawing it into the firing barrel. Step 2: The bottom metal bullet advances in the firing barrel. When the bottom metal bullet reaches the spring blocking device, the movable bracket blocks the bottom metal bullet, causing the bottom metal bullet to stop in the first-stage coil. Step 3: The first-stage coil continuously applies Lorentz force to the bottom metal bullet, causing it to break free from the spring's restraint on the movable support. The movable support rotates downward, and the bottom metal bullet continues to advance in the firing barrel, receiving Lorentz force from other electromagnetic coils to accelerate its advance and be fired. The metal bullets in the magazine are continuously fired through the above steps. Step 4: Establish an electromagnetic induction control algorithm to analyze the firing speed of the metal bullet, so as to adjust the firing speed by adjusting the energized components.

[0013] Furthermore, in step 4, an electromagnetic induction control algorithm is established to analyze the firing velocity of the metal bullet, specifically including: The metal bullet is an aluminum bullet. The aluminum bullet can be considered equivalent to a single-turn coil with a uniformly distributed current. The circuit equation for the aluminum bullet is: (17); Therefore, the Lorentz force on the aluminum bullet can be expressed as: (18); From equation (2), we can derive the Lorentz magnetic force acting on the aluminum bullet. and the current of the drive coil Mutual inductance between the drive coil and the aluminum spring Mutual inductance gradient And the self-sensing of aluminum bullets Related; including inductors It is an inherent property of aluminum bullets, determined by their size; mutual inductance Mutual inductance gradient The current is determined by the self-inductance of the aluminum bullet, the self-inductance of the driving coil, and the position of the aluminum bullet; It is mainly determined by the parameters in the drive circuit; The differential equation describing the voltage across the circuit capacitor is: (19); Equation (3) is a second-order linear homogeneous differential equation with constant coefficients. Solving this equation requires two initial conditions, namely: (20); Since the circuit has a zero-input response, therefore The forced component is zero, that is... The characteristic equation and characteristic roots of equation (3) are: (twenty one); (twenty two); make Substituting into the above equation, we obtain two characteristic roots: (twenty three); for Right now From equation (7), we can see that , Let them be a pair of conjugate complex numbers, written as: (twenty four); (25); in: (26); Finally, the solution is: (27); (28); Will , , Substituting into equation (12) above, we get: (29); When the coilgun main circuit Equation (13) can be simplified to: (30); Wherein the decay time constant is: (31); Decreasing oscillation period: (32); From equations (14), (15), and (16), it can be concluded that when ,Right now Current The maximum value is closely related to the initial energy stored in the capacitor, and the time for the current to reach its maximum value is approximately [time missing]. Combining equations (2) and (14), it can be concluded that the larger the capacitance value, the greater the speed of the aluminum bullet.

[0014] As can be seen from the above description of the present invention, compared with the prior art, the present invention includes at least one of the following beneficial effects: 1. The continuous-fire small electromagnetic gun of the present invention, by designing the magazine near the first-stage coil, takes advantage of the small Lorentz force near the periphery of the first-stage coil to develop the technology of bullet intake into the firing barrel; the spring blocking device, with spring, movable bracket, fixed bracket and rotary bearing as the main components, develops the technology of blocking low-speed metal bullets, blocking the metal bullets in the first-stage coil, and together with the bullet intake technology, realizes the automatic loading and automatic firing functions, and continuously performs automatic loading and automatic firing to realize the burst firing function; 2. The control method of the continuous-fire small electromagnetic gun of the present invention can realize the continuous firing of metal bullets, and establish an electromagnetic induction control algorithm to analyze the firing speed of the metal bullets in order to adjust the firing speed of the electromagnetic gun. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of a continuously firing small electromagnetic railgun according to a preferred embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A; Figure 3 This is a three-dimensional schematic diagram of a continuously firing small electromagnetic railgun according to a preferred embodiment of the present invention. Figure 4 This is a left-side view of a continuously firing small electromagnetic railgun according to a preferred embodiment of the present invention; The following are the labels in the diagram: 1. Magazine, 2. Launching barrel, 3. Spring blocking device, 4. Power supply assembly, 5. Electromagnetic coil, 101. Metal bullet, 201. Opening, 301. Spring, 302. Movable bracket, 303. Fixed bracket, 304. Rotary bearing, 401. Power interface, 402. Capacitor, 403. Switch button, 501. First-stage coil. Detailed Implementation

[0016] 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.

[0017] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] Reference Figures 1-4 As shown, in a preferred embodiment of the present invention, a continuously firing small electromagnetic gun includes a magazine 1, a firing barrel 2, a spring blocking device 3, an energizing component 4, and several electromagnetic coils 5. The magazine 1 contains a plurality of metal bullets 101 arranged from top to bottom within the magazine 1. The bottom of the magazine 1 has a discharge port that is connected to the firing barrel 2. Several electromagnetic coils 5 are sequentially arranged around the firing barrel 2; each electromagnetic coil 5 includes a first-stage coil 501, the left end of which is connected to the magazine 1 and the right end of which is connected to the spring blocking device 3. The spring blocking device 3 includes a spring 301, a movable bracket 302, a fixed bracket 303, and a rotary bearing 304. The fixed bracket 303 is disposed on the first-stage coil 501. The movable bracket 302 is connected to the fixed bracket 303 through the rotary bearing 304. One end of the spring 301 is connected to the fixed bracket 303 and the other end is connected to the movable bracket 302. The bottom of the firing barrel 2 is provided with an opening 201. The movable bracket 302 extends into the opening 201 to block the metal bullet 101. The energizing component 4 is electrically connected to the electromagnetic coil 5 and energizes the electromagnetic coil 5. The first-stage coil 501 can apply a Lorentz force to the metal bullet 101 at the bottom of the magazine 1, and draw the metal bullet 101 into the firing barrel 2.

[0020] The continuous-fire miniature electromagnetic railgun of the present invention, by designing the magazine 1 near the first-stage coil 501, and taking advantage of the small Lorentz force near the periphery of the first-stage coil 501, develops a technology for the bullet to be drawn into the firing barrel 2; the spring blocking device 3, with spring 301, movable bracket 302, fixed bracket 303 and rotary bearing 304 as the main components, develops a blocking technology for low-velocity metal bullets 101, blocking the metal bullets 101 inside the first-stage coil 501, and in conjunction with the bullet drawing technology, realizes the automatic loading and automatic firing functions, and continuously performs automatic loading and automatic firing to achieve the continuous firing function.

[0021] As a preferred embodiment of the present invention, it may also have the following additional technical features: In this embodiment, the power-conducting component 4 includes a power interface 401 for connecting an external power source. The power interface 401 is used to connect a power source to power the power-conducting component 4.

[0022] In this embodiment, the energized component 4 includes a capacitor 402, which is electrically connected to the electromagnetic coil 5. The capacitor 402 is an electronic component required for the electromagnetic gun and is closely related to the firing velocity of the metal bullet 101.

[0023] In this embodiment, the energizing component 4 includes a switch button 403, which is used to turn on the energizing component 4 to supply power to the electromagnetic coil 5. The switch button 403 controls the turning on or off of the energizing component 4, thereby controlling the electromagnetic gun to turn on or off.

[0024] In this embodiment, the metal bullet 101 is an aluminum bullet.

[0025] In this embodiment, both the magazine 1 and the spring blocking device 3 are made of materials that do not generate electromagnetic induction. The absence of electromagnetic interference ensures stable firing of the electromagnetic gun. Specifically, the magazine 1 and the spring blocking device 3 can be 3D printed from 3D printing resin material.

[0026] The present invention also provides a control method for a continuously firing miniature electromagnetic railgun, comprising the following steps: Step 1: Load several metal bullets 101 into the magazine 1, connect the power interface 401 to an external power source, energize the electromagnetic coil 5, and apply a Lorentz force to the bottom metal bullet 101, drawing the bottom metal bullet 101 into the firing barrel 2. Step 2: The bottom metal bullet 101 advances in the firing barrel 2. When the bottom metal bullet 101 advances to the spring blocking device 3, the movable bracket 302 blocks the bottom metal bullet 101, so that the bottom metal bullet 101 stops in the first-stage coil 501. Step 3: The first-stage coil 501 continuously applies Lorentz force to the bottom metal bullet 101, causing the bottom metal bullet 101 to break free from the constraint of the spring 301 on the movable support 302. The movable support 302 rotates downward, and the bottom metal bullet 101 continues to advance in the firing barrel 2 and is accelerated forward by the Lorentz force applied by other electromagnetic coils 5 and fired. The metal bullets 101 in the magazine 1 are continuously fired through the above steps. Step 4: Establish an electromagnetic induction control algorithm to analyze the firing speed of the metal bullet 101, so as to adjust the firing speed by adjusting the energized component 4.

[0027] The control method of the continuous-fire small electromagnetic railgun of the present invention can realize the continuous firing of metal bullets 101, and establish an electromagnetic induction control algorithm to analyze the firing speed of metal bullets 101 in order to adjust the firing speed of the electromagnetic railgun.

[0028] In this embodiment, in step 4, an electromagnetic induction control algorithm is established to analyze the firing velocity of the metal bullet 101, specifically including: Metal bullet 101 is an aluminum bullet. The aluminum bullet can be considered equivalent to a single-turn coil with a uniformly distributed current. The circuit equation for the aluminum bullet is: (33); Therefore, the Lorentz force on the aluminum bullet can be expressed as: (34); From equation (2), we can derive the Lorentz magnetic force acting on the aluminum bullet. and the current of the drive coil Mutual inductance between the drive coil and the aluminum spring Mutual inductance gradient And the self-sensing of aluminum bullets Related; including inductors It is an inherent property of aluminum bullets, determined by their size; mutual inductance Mutual inductance gradient The current is determined by the self-inductance of the aluminum bullet, the self-inductance of the driving coil, and the position of the aluminum bullet; It is mainly determined by the parameters in the drive circuit; The differential equation describing the voltage across the circuit capacitor is: (35); Equation (3) is a second-order linear homogeneous differential equation with constant coefficients. Solving this equation requires two initial conditions, namely: (36); Since the circuit has a zero-input response, therefore The forced component is zero, that is... The characteristic equation and characteristic roots of equation (3) are: (37); (38); make Substituting into the above equation, we obtain two characteristic roots: (39); for Right now From equation (7), we can see that , Let them be a pair of conjugate complex numbers, written as: (40); (41); in: (42); Finally, the solution is: (43); (44); Will , , Substituting into equation (12) above, we get: (45); When the coilgun main circuit Equation (13) can be simplified to: (46); Wherein the decay time constant is: (47); Decreasing oscillation period: (48); From equations (14), (15), and (16), it can be concluded that when ,Right now Current The maximum value is closely related to the initial energy stored in capacitor 402, and the time for the current to reach its maximum value is approximately [time missing]. Combining equations (2) and (14), it can be concluded that the larger the capacitance value, the greater the speed of the aluminum bullet.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A continuously firing miniature electromagnetic railgun, characterized in that, It includes a magazine, a firing barrel, a spring-loaded blocking device, an electrical assembly, and several electromagnetic coils; The magazine contains a number of metal bullets arranged from top to bottom. The bottom of the magazine has an exit port that is connected to the firing barrel. Several electromagnetic coils are sequentially arranged around the periphery of the firing barrel; each electromagnetic coil includes a first-stage coil, the left end of which is connected to the magazine and the right end of which is connected to the spring blocking device. The spring blocking device includes a spring, a movable bracket, a fixed bracket, and a rotary bearing. The fixed bracket is disposed on the first-stage coil, and the movable bracket is connected to the fixed bracket through the rotary bearing. One end of the spring is connected to the fixed bracket, and the other end is connected to the movable bracket. The bottom of the firing barrel is provided with an opening, and the movable bracket extends into the opening to block the metal bullet. The energizing component is electrically connected to the electromagnetic coil and energizes the electromagnetic coil. The first-stage coil can apply a Lorentz force to the metal bullet at the bottom of the magazine, drawing the metal bullet into the firing barrel.

2. The continuously firing miniature electromagnetic railgun according to claim 1, characterized in that, The power-on component includes a power interface for connecting an external power source.

3. A continuously firing miniature electromagnetic railgun according to claim 1, characterized in that, The energized component includes a capacitor, which is electrically connected to the electromagnetic coil.

4. A continuously firing miniature electromagnetic railgun according to claim 1, characterized in that, The energizing component includes a switch button, which is used to turn on the energizing component to supply power to the electromagnetic coil.

5. A continuously firing miniature electromagnetic railgun according to claim 1, characterized in that, The metal bullet is an aluminum bullet.

6. A continuously firing miniature electromagnetic railgun according to claim 1, characterized in that, Both the magazine and the spring-loaded blocking device are made of materials that do not generate electromagnetic induction.

7. A control method for a continuously firing miniature electromagnetic railgun, characterized in that, Includes the following steps: Step 1: Load several metal bullets into the magazine, connect the power interface to an external power source to energize the electromagnetic coil, and apply a Lorentz force to the bottom metal bullet, drawing it into the firing barrel. Step 2: The bottom metal bullet advances in the firing barrel. When the bottom metal bullet reaches the spring blocking device, the movable bracket blocks the bottom metal bullet, causing the bottom metal bullet to stop in the first-stage coil. Step 3: The first-stage coil continuously applies Lorentz force to the bottom metal bullet, causing it to break free from the spring's restraint on the movable support. The movable support rotates downward, and the bottom metal bullet continues to advance in the firing barrel, receiving Lorentz force from other electromagnetic coils to accelerate its advance and be fired. The metal bullets in the magazine are continuously fired through the above steps. Step 4: Establish an electromagnetic induction control algorithm to analyze the firing speed of the metal bullet, so as to adjust the firing speed by adjusting the energized components.

8. The control method for a continuously firing miniature electromagnetic railgun according to claim 7, characterized in that, In step 4, an electromagnetic induction control algorithm is established to analyze the firing velocity of the metal bullet, specifically including: The metal bullet is an aluminum bullet. The aluminum bullet can be considered equivalent to a single-turn coil with a uniformly distributed current. The circuit equation for the aluminum bullet is: (1)； Therefore, the Lorentz force on the aluminum bullet can be expressed as: (2)； From equation (2), we can derive the Lorentz magnetic force acting on the aluminum bullet. and the current of the drive coil Mutual inductance between the drive coil and the aluminum spring Mutual inductance gradient And the self-sensing of aluminum bullets Related; including inductors It is an inherent property of aluminum bullets, determined by their size; mutual inductance Mutual inductance gradient The current is determined by the self-inductance of the aluminum bullet, the self-inductance of the driving coil, and the position of the aluminum bullet; It is mainly determined by the parameters in the drive circuit; The differential equation describing the voltage across the circuit capacitor is: (3)； Equation (3) is a second-order linear homogeneous differential equation with constant coefficients. Solving this equation requires two initial conditions, namely: (4)； Since the circuit has a zero-input response, therefore The forced component is zero, that is... The characteristic equation and characteristic roots of equation (3) are: (5)； (6)； make Substituting into the above equation, we obtain two characteristic roots: (7)； for Right now From equation (7), we can see that , Let them be a pair of conjugate complex numbers, written as: (8)； (9)； in: (10)； Finally, the solution is: (11)； (12)； Will , , Substituting into equation (12) above, we get: (13)； When the coilgun main circuit Equation (13) can be simplified to: (14)； Wherein the decay time constant is: (15)； Decreasing oscillation period: (16)； From equations (14), (15), and (16), it can be concluded that when ,Right now Current The maximum value is closely related to the initial energy stored in the capacitor, and the time for the current to reach its maximum value is approximately [time missing]. Combining equations (2) and (14), it can be concluded that the larger the capacitance value, the greater the speed of the aluminum bullet.

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