CN112498728A - Brushless motor driven electromagnetic catapult and method - Google Patents
Brushless motor driven electromagnetic catapult and method Download PDFInfo
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- CN112498728A CN112498728A CN202011429293.7A CN202011429293A CN112498728A CN 112498728 A CN112498728 A CN 112498728A CN 202011429293 A CN202011429293 A CN 202011429293A CN 112498728 A CN112498728 A CN 112498728A
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- 230000009471 action Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F1/00—Ground or aircraft-carrier-deck installations
- B64F1/04—Ground or aircraft-carrier-deck installations for launching aircraft
- B64F1/06—Ground or aircraft-carrier-deck installations for launching aircraft using catapults
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Abstract
The invention provides a brushless motor driven electromagnetic catapult and a method, relates to the technical field of aircraft design, and has the advantages of high response speed, simple structure, controllable catapulting parameters, high efficiency, reliability and strong adaptability; the ejector comprises an ejection frame, a pulley, a steel cable and a motor driving device; the pulley is arranged at the top of the ejection rack, the steel cable is annular and is wound on the periphery of the ejection rack and is sequentially connected with the pulley and the motor driving device; the ejector also comprises four guide wheels, and the four guide wheels are arranged at two ends of the ejection frame in pairs; the four guide wheels and the wire wheel are positioned on the same plane; the steel cable is respectively wound in the four guide wheels and the fixing groove of the wire wheel and is in a tensioning state. The technical scheme provided by the invention is suitable for the ejection process of the unmanned aerial vehicle.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of aircraft design, in particular to an electromagnetic catapult driven by a brushless motor and a method.
[ background of the invention ]
The catapult takeoff mode of the medium and small unmanned aerial vehicles has the advantages of strong site adaptability, flexibility, high efficiency, low cost and the like, can realize the quick takeoff of an unmanned aerial vehicle system, and is convenient for transportation and transfer. The unmanned aerial vehicle ejection device needs to meet the requirements of simple structure, easy deployment, short response time, high reliability and the like so as to ensure the stability and high efficiency of an unmanned aerial vehicle system.
Conventional unmanned aerial vehicle system of launching adopts gas, pneumatic cylinder more, and rubber band or linear electric motor are as the power supply, realize the boosting of organism to launch. The pneumatic cylinder and the hydraulic cylinder are used as power sources, the structure is complex, the deployment time is long, the linear motor ejector system is heavy, and the reliability of the rubber band ejector is low.
Accordingly, there is a need to develop a brushless motor driven electromagnetic catapult and method to address the deficiencies of the prior art to solve or mitigate one or more of the problems set forth above.
[ summary of the invention ]
In view of the above, the invention provides an electromagnetic catapult driven by a brushless motor and a method thereof, wherein the brushless motor is adopted as a power source, and the electromagnetic catapult has the advantages of high response speed, simple structure, controllable catapulting parameters, high efficiency, reliability and strong adaptability.
In one aspect, the invention provides a brushless motor driven electromagnetic catapult, which is characterized by comprising a catapult frame, a pulley, a steel cable and a motor driving device;
the pulley is arranged at the top of the ejection rack, the steel cable is annular and is wound on the periphery of the ejection rack and sequentially connected with the pulley and the motor driving device.
The above aspects and any possible implementations further provide an implementation, in which the motor driving device includes a motor bracket, a motor, and a reel; the motor support is fixed in the ejection rack below, the motor is located on the motor support, the motor shaft of motor with line wheel fixed connection.
The above aspects and any possible implementation manner further provide an implementation manner, wherein the electromagnetic catapult further comprises four guide wheels, and two guide wheels are respectively arranged at two ends of the catapult frame; the four guide wheels and the wire wheel are positioned on the same plane; the plane is a vertical plane;
the steel cable is respectively wound in the four guide wheels and the fixing groove of the wire wheel and is in a tensioning state.
The above-described aspect and any possible implementation manner further provide an implementation manner, wherein the motor driving device is connected with an electronic control system for performing ejection control on the electromagnetic ejector.
In accordance with the above aspect and any possible implementation manner, there is further provided an implementation manner, wherein two sides of the ejection rack are respectively provided with a guide rail, and two sides of the pulley are respectively in sliding connection with the guide rails.
The above aspect and any possible implementation further provide an implementation in which the cable is fixedly connected to the trolley.
The above aspect and any possible implementation further provide an implementation in which the motor is a bidirectional output brushless motor.
The above aspects and any possible implementation manner further provide an implementation manner that the slide rail is in an inclined state and is high in front and low in back. The front end of slide rail is the one end that unmanned aerial vehicle launched, and the rear end is the other end that corresponds.
The above aspect and any possible implementation manner further provide an implementation manner, and two ends of the ejection rack are respectively provided with a support leg.
In another aspect, the invention provides a brushless motor-driven electromagnetic ejection method, which is characterized in that the method is applied to the process of ejecting the unmanned aerial vehicle by using the electromagnetic ejector as described above;
the method comprises the following steps:
s1, placing the unmanned aerial vehicle on a pulley;
s2, the motor driving device starts to work to drive the pulley to accelerate along the guide rail;
s3, when the ejection speed of the unmanned aerial vehicle is reached, the motor driving device controls the pulley to decelerate so that the unmanned aerial vehicle can be ejected under the action of inertia;
and S4, after the motor driving device decelerates to be static, the motor driving device moves reversely, and the pulley returns to the original position.
Compared with the prior art, the invention can obtain the following technical effects: the brushless motor is adopted as a power source, so that the system reliability is high, and the response speed is high; the structure is simple and reliable, the system is light in weight and good in maintainability, the cost can be effectively reduced, and the rapid deployment of the unmanned aerial vehicle system is realized; the application range is wide, different ejection rack structural forms can be compatible, and different ejection working condition requirements can be met; the parameter controllability is strong, the design is strong through an electric control system, the ejection overload and the machine body speed are adjustable and controllable, and the system is stable and efficient.
Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electromagnetic catapult driven by a brushless motor according to an embodiment of the present invention.
Wherein, in the figure:
1. a first guide wheel; 2. a second guide wheel; 3. a steel cord; 4. a guide rail; 5. an unmanned aerial vehicle; 6. a third guide wheel; 7. a fourth guide wheel; 8. a pulley; 9. a wire wheel; 10. a motor bracket; 11. a motor; 12. and (4) ejecting the frame.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The invention provides an electromagnetic catapult driven by a brushless motor, which adopts the brushless motor as a power source, converts rotary motion into linear motion through a rope system, and pulls an unmanned aerial vehicle to finish accelerated catapult take-off.
The electromagnetic catapult adopts the brushless motor as a power source, and has mature technology and high reliability. The brushless motor torque is fully utilized, the forward and reverse output characteristics can be realized, an additional speed reducer is not needed, the system response speed is high, and the brushless motor is more stable and efficient. The electromagnetic catapult is simpler in structure, the brushless motor directly outputs bidirectional torque as a power source to realize acceleration and deceleration functions, so that the catapult frame structure is greatly simplified, the maintainability is improved, and the electromagnetic catapult can be compatible with different catapult frame structural forms. The electromagnetic catapult can realize stronger designability through an electric control system, has stable and controllable power, can meet the requirements of more extensive catapulting working conditions, and has stronger adaptability. The electromagnetic catapult is embodied by a power source, and the brushless motor adopts the electromagnetic principle.
An electromagnetic catapult driven by a brushless motor mainly comprises a guide wheel, a steel cable, a pulley, a guide rail, a wire wheel, a motor and the like. The motor adopts a brushless motor capable of bidirectional output, is usually a servo motor, and can convert an electric signal into output torque and angular displacement. The wire wheel is connected with the output shaft of the motor and used for transmitting the torque output by the motor and converting the rotary motion into linear motion. The steel cable is used for transmitting the traction force output by the motor, and the pulley is guided to move on the guide rail through the guide wheel, so that the unmanned aerial vehicle is driven to move. The tackle is driven by the steel cable and matched with the ejector guide rail to realize linear acceleration work transportation of the unmanned aerial vehicle body on the tackle.
The structure of the electromagnetic catapult is schematically shown in fig. 1. The electromagnetic catapult driven by the brushless motor comprises a guide wheel, a steel cable, a pulley, a wire wheel, a guide rail, a motor and the like. Preferably, the brushless motor-driven electromagnetic catapult comprises a first guide wheel 1, a second guide wheel 2, a steel cable 3, a guide rail 4, an unmanned aerial vehicle 5, a third guide wheel 6, a fourth guide wheel 7, a pulley 8, a reel 9, a motor bracket 10, a motor 11 and an ejection rack 12.
The ejection rack 12 is a strip-shaped rack body structure. Two ends of the ejection rack 12 are respectively provided with two support legs, and the four support legs support the ejection rack 12 to form a certain space with the ground. Two guide wheels are respectively arranged on two end surfaces of the ejection rack 12. The first end surface is provided with a first guide wheel 1 and a second guide wheel 2, and the two guide wheels are arranged in the middle of the end surface and are arranged up and down. The second end surface is provided with a third guide wheel 6 and a fourth guide wheel 7, and the two guide wheels are also arranged in the middle of the end surface and are arranged up and down. The four guide wheels are connected by a steel cable 3, and the steel cable 3 circularly moves around the middle shaft surface of the ejection rack 12 through the four guide wheels under the action of power. A pulley 8 is fixedly arranged on the steel cable 3, and two sides of the pulley 8 are respectively connected with the guide rails 4 arranged on two sides of the upper surface of the ejection rack 12 in a sliding manner. The unmanned aerial vehicle 5 is placed on the tackle 8. A motor support 10 is fixedly arranged below the ejection rack 12, a motor 11 is fixedly arranged on the motor support 10, a motor shaft of the motor 11 is fixedly connected with the wire wheel 9, and the steel cable 3 is connected with the wire wheel 9. Under the drive of the motor, the wire wheel 9 rotates, so that the steel cable 3 is driven to move under the action of the four guide wheels. Due to the fixed connection of the pulleys 8 on the steel cable 3, the pulleys 8 move along the guide rail 4, so that the ejection of the unmanned aerial vehicle 5 is realized.
Unmanned aerial vehicle 5 and coaster 8 can be connected through locating the ejection shutting release on coaster 8, and this ejection shutting release is fixed unmanned aerial vehicle on coaster 8 before ejecting, releases unmanned aerial vehicle when ejecting. Can be realized by using various existing locking and releasing structures in the field of unmanned aerial vehicle ejection.
One end of the steel cable 3 is fixed at the front end of the pulley 8, and the other end of the steel cable 3 bypasses the first guide wheel 1 and the second guide wheel 2 along an ejection path, is wound in a fixing groove of the wire wheel 9, then bypasses the third guide wheel 6 and the fourth guide wheel 7, is fixed at the rear end of the pulley 8 along the ejection path forwards, and is tensioned, so that the steel cable can transmit linear motion converted from rotary motion.
Through 11 positive output torques in the time of launching, drive line wheel 9 and rotate, line wheel 9 draws coaster 8 through cable wire 3 and moves along 6 accelerated speeds of guide rail, and coaster 8 promotes unmanned aerial vehicle 5 to accelerate jointly. The motor 11 may be connected to a controller for controlling the rotational speed of the motor 11 over time. After the unmanned aerial vehicle finishes ejecting, the motor 11 reversely outputs torque to drive the pulley 8 to return to the original position, and preparation is made for next ejection.
The steel cable 3 is made of proper materials and sizes according to actual ejection overload requirements. The guide rail 4 is arranged on the ejection rack 12, and the structural form of the ejection rack 12 can be designed according to the characteristics of the unmanned aerial vehicle 5 and the actual ejection requirements.
In conclusion, the brushless motor driven electromagnetic catapult suitable for catapult take-off of medium and small unmanned aerial vehicles can be realized, the brushless motor is used as a power source in the system, the structure is simple, the reliability is high, and the rotating motion of the brushless motor is converted into the linear motion through the steel cable system. Through control brushless motor's positive, reverse output, reach add, the controllable of speed reduction moment of torsion, have safe high-efficient, the response is quick, application scope is wide, designability advantage such as strong can satisfy the more extensive operating mode demand of launching of well, small unmanned aerial vehicle system.
The electromagnetic catapult driven by the brushless motor and the method provided by the embodiment of the application are described in detail above. The above description of the embodiments is only for the purpose of helping to understand the method of the present application and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
As used in the specification and claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (10)
1. The brushless motor driven electromagnetic catapult is characterized by comprising a catapult frame, a pulley, a steel cable and a motor driving device;
the pulley is arranged at the top of the ejection rack, the steel cable is annular and is wound on the periphery of the ejection rack and sequentially connected with the pulley and the motor driving device.
2. The brushless motor driven electromagnetic catapult of claim 1, wherein the motor driving means includes a motor bracket, a motor, and a wire reel; the motor support is fixed in the ejection rack below, the motor is located on the motor support, the motor shaft of motor with line wheel fixed connection.
3. The brushless motor driven electromagnetic launcher according to claim 2, further comprising four guide wheels, two of which are disposed at two ends of the launcher; the four guide wheels and the wire wheel are positioned on the same plane;
the steel cable is respectively wound in the four guide wheels and the fixing groove of the wire wheel and is in a tensioning state.
4. The brushless motor driven electromagnetic launcher according to claim 1, wherein said motor driving device is connected to an electronic control system for controlling launching of said electromagnetic launcher.
5. The brushless motor driven electromagnetic launcher according to claim 1, wherein the launcher has guide rails on both sides thereof, and the carriage has both sides thereof slidably connected to the guide rails.
6. The brushless motor driven electromagnetic launcher according to claim 1, wherein the cable is fixedly attached to the sled.
7. The brushless motor driven electromagnetic catapult of claim 2, wherein the motor is a bi-directional output brushless motor.
8. The brushless motor driven electromagnetic launcher according to claim 5, wherein the slide rail is inclined and high in front and low in back.
9. The brushless motor driven electromagnetic launcher according to claim 1, wherein the two ends of the launcher are provided with a leg, respectively.
10. A brushless motor driven electromagnetic ejection method, which is suitable for use in the process of ejecting the unmanned aerial vehicle by the electromagnetic ejector of any one of claims 1-9;
the method comprises the following steps:
s1, placing the unmanned aerial vehicle on a pulley;
s2, the motor driving device starts to work to drive the pulley to accelerate along the guide rail;
s3, when the ejection speed of the unmanned aerial vehicle is reached, the motor driving device controls the pulley to decelerate so that the unmanned aerial vehicle can be ejected under the action of inertia;
and S4, after the motor driving device decelerates to be static, the motor driving device moves reversely, and the pulley returns to the original position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011429293.7A CN112498728A (en) | 2020-12-09 | 2020-12-09 | Brushless motor driven electromagnetic catapult and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011429293.7A CN112498728A (en) | 2020-12-09 | 2020-12-09 | Brushless motor driven electromagnetic catapult and method |
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| CN112498728A true CN112498728A (en) | 2021-03-16 |
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| CN202011429293.7A Pending CN112498728A (en) | 2020-12-09 | 2020-12-09 | Brushless motor driven electromagnetic catapult and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114537696A (en) * | 2022-03-18 | 2022-05-27 | 北京理工大学 | Aircraft engagement ejection device and system and aircraft ejection control method |
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| GB1100873A (en) * | 1964-05-06 | 1968-01-24 | Bliss E W Co | Improvements in or relating to catapult systems |
| CN105799948A (en) * | 2016-03-18 | 2016-07-27 | 北京理工大学 | Catapult of flywheel-type high-speed unmanned aerial vehicle |
| CN206624012U (en) * | 2017-04-11 | 2017-11-10 | 西安君晖航空科技有限公司 | A kind of V belt translation unmanned aerial vehicle ejecting frame |
| CN109398741A (en) * | 2018-12-12 | 2019-03-01 | 威海广泰空港设备股份有限公司 | Trailer-type unmanned plane emitter |
| CN109592060A (en) * | 2018-11-06 | 2019-04-09 | 江南大学 | A kind of fixed-wing unmanned plane landing system and its landing method |
| CN110803292A (en) * | 2019-11-25 | 2020-02-18 | 航天时代飞鸿技术有限公司 | Steel cable retaining mechanism |
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2020
- 2020-12-09 CN CN202011429293.7A patent/CN112498728A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1100873A (en) * | 1964-05-06 | 1968-01-24 | Bliss E W Co | Improvements in or relating to catapult systems |
| CN105799948A (en) * | 2016-03-18 | 2016-07-27 | 北京理工大学 | Catapult of flywheel-type high-speed unmanned aerial vehicle |
| CN206624012U (en) * | 2017-04-11 | 2017-11-10 | 西安君晖航空科技有限公司 | A kind of V belt translation unmanned aerial vehicle ejecting frame |
| CN109592060A (en) * | 2018-11-06 | 2019-04-09 | 江南大学 | A kind of fixed-wing unmanned plane landing system and its landing method |
| CN109398741A (en) * | 2018-12-12 | 2019-03-01 | 威海广泰空港设备股份有限公司 | Trailer-type unmanned plane emitter |
| CN110803292A (en) * | 2019-11-25 | 2020-02-18 | 航天时代飞鸿技术有限公司 | Steel cable retaining mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114537696A (en) * | 2022-03-18 | 2022-05-27 | 北京理工大学 | Aircraft engagement ejection device and system and aircraft ejection control method |
| CN114537696B (en) * | 2022-03-18 | 2024-03-08 | 北京理工大学 | Aircraft engagement ejection device, system and aircraft ejection control method |
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