Coaxial unmanned aerial vehicle course control and rotor successive rotation verification test device

Abstract

The utility model discloses a coaxial unmanned aerial vehicle course control and rotor successive rotation verification test device. The coaxial unmanned aerial vehicle course control and rotor successive rotation verification test device comprises a base, the base is provided with a supporting table, and the supporting table is provided with a deflection detection mechanism; the deflection detection mechanism comprises a supporting plate arranged above the supporting table, and eight detection assemblies are arranged between the supporting plate and the supporting table; the detection assembly comprises a pressure detection part fixedly installed on the top of the detection table. According to the coaxial unmanned aerial vehicle course control and rotor successive rotation verification test device provided by the utility model, the base, the supporting table and the deflection detection mechanism are arranged, and eight pressure detection components representing directions are utilized, so that the inclination directions of the coaxial unmanned aerial vehicle in various states can be detected; and the course control of the unmanned aerial vehicle and the experimental verification work of successive rotation of the rotor wings can be facilitated, so that a more stable coaxial unmanned aerial vehicle can be designed.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle (UAV) experimental devices, in particular to a coaxial UAV heading control and rotor sequential rotation verification test device. Background Art

[0002] Unmanned aerial vehicles (UAVs) include multirotors, fixed-wing aircraft, and fixed-wing / rotor hybrids. Multirotor aircraft feature coaxial and non-coaxial rotor configurations. In coaxial twin-propeller drones, the upper and lower propellers can rotate at different speeds, a design that helps optimize flight performance and enhance maneuverability. For example, by adjusting the speed differential between the upper and lower propellers, the drone's attitude can be precisely controlled. This design ensures excellent stability and maneuverability in a variety of flight conditions, such as takeoff, hovering, and high-speed flight.

[0003] When designing and developing a coaxial UAV, it is necessary to conduct experimental verification on the coaxial UAV under development. For example, it is necessary to experimentally verify the rotation sequence of the upper and lower rotors, and their impact on the flight state of the UAV, especially the take-off state. It is also necessary to verify the rotor shape, specifications, flight control system and other factors, and their impact on the stability and accuracy of the UAV's heading control, etc.

[0004] Therefore, it is necessary to provide a coaxial UAV heading control and rotor rotation verification test device to solve the above technical problems. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the existing technology, the utility model provides a coaxial UAV heading control and rotor rotation verification test device, which can facilitate experimental verification of the coaxial UAV.

[0006] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0007] A coaxial UAV heading control and rotor rotation verification test device includes: a base, a support platform is installed on the base, a deflection detection mechanism is provided on the support platform, the deflection detection mechanism includes a support plate arranged above the support platform, eight detection components are arranged between the support plate and the support platform, the detection component includes a pressure detection component fixedly installed on the top of the detection platform, and a first spring is installed between the pressure detection component and the support plate.

[0008] Preferably, a door-shaped frame is installed on the base, a bracket is installed below the frame, and a high-speed camera is installed on the bracket.

[0009] Preferably, there are multiple high-speed cameras.

[0010] Preferably, an electric push rod is installed between the frame and the bracket.

[0011] Preferably, a clamp is installed on the top of the support plate.

[0012] Preferably, the support platform is rotatably connected to the base via a bearing, a plurality of tension detection components are mounted on the frame, and a second spring is mounted between the tension detection components and the support platform.

[0013] Preferably, a plurality of sliding sleeves are installed on the bracket, the high-speed camera is connected to the sliding sleeves, and limiting screws are installed on the sliding sleeves.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The present invention is capable of detecting the tilt direction of a coaxial UAV in various states by providing a base, a support platform, and a deflection detection mechanism, using eight pressure detection components representing orientations. This facilitates experimental verification of the UAV's heading control and the sequential rotation of the rotors, thereby enabling the design of a more stable coaxial UAV.

[0016] (2) The utility model installs a high-speed camera above the drone and uses the high-speed camera to record the actual state of the drone during the experiment, making it easier to determine the start and stop sequence between the upper and lower rotors of the drone;

[0017] (3) The utility model can conveniently record multiple experimental videos by setting up multiple high-speed cameras, and verify each other, so that the data is more complete and the error of the experiment is conveniently reduced;

[0018] (4) The utility model can conveniently adjust the height of the high-speed camera by installing an electric push rod between the frame and the bracket;

[0019] (5) The present invention can facilitate testing of the horizontal deflection of the UAV during flight by installing a tension detection component between the frame and the support platform;

[0020] (6) The present invention can conveniently adjust the position of the high-speed camera by installing a sliding sleeve on the bracket so that it can be aligned with the end close to the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the coaxial UAV heading control and rotor rotation verification test device provided by the utility model;

[0022] Figure 2 for Figure 1 The schematic diagram of the front view of the coaxial UAV heading control and rotor rotation verification test device shown;

[0023] Figure 3 for Figure 1The schematic diagram of the top view of the coaxial UAV heading control and rotor rotation verification test device shown;

[0024] Figure 4 for Figure 1 The schematic diagram of the structure of the deflection detection mechanism in the coaxial UAV heading control and rotor rotation verification test device shown;

[0025] Figure 5 for Figure 1 The diagram shows the structure of the bracket in the coaxial UAV heading control and rotor rotation verification test device.

[0026] Among them, the names corresponding to the figure marks are: 1-base, 2-support platform, 3-support plate, 4-pressure detection component, 5-first spring, 6-frame, 7-bracket, 8-high-speed camera, 9-electric push rod, 10-clamp, 11-second spring, 12-tension detection component, 13-sleeve, 14-limit screw. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0028] Example 1:

[0029] like Figure 1-5As shown, the coaxial UAV heading control and rotor rotation verification test device provided by the present invention includes: a base 1, a support platform 2 is installed on the base 1, a deflection detection mechanism is provided on the support platform 2, the deflection detection mechanism includes a support plate 3 arranged above the support platform 2, the coaxial UAV is fixedly installed at the top center position of the support plate 3, eight detection components are evenly installed between the support plate 3 and the support platform 2, and the eight detection components are divided into eight directions, including front, rear, left, right, left front, right front, left rear, and right rear. The nose of the coaxial UAV is aligned with the front detection component, and the tail is aligned with the rear detection component. The detection component includes a pressure detection component 4 fixedly installed on the top of the detection platform 2, a first spring 5 is installed between the pressure detection component 4 and the support plate 3, and the pressure sensor 4 adopts a high-precision pressure sensor. The device is connected to the controller, and the controller displays the pressure detected by the pressure sensor on the corresponding direction of the display screen. The direction with the smallest pressure change value represents that the drone is tilted to that side, which represents the flight direction of the drone. When in use, the coaxial drone is fixed on the top of the support plate 3, and the pressure values ​​detected by the pressure sensor in each direction are all set to zero. Then, the drone is started, and the simulation of the drone's take-off, hovering, turning, and flight postures is simulated. Through the pressure changes in the direction displayed on the display screen, it is convenient to judge the stability of the drone in each state and the accuracy of the heading control. In addition, it is also convenient to conduct experimental verification on coaxial drones with different rotation orders of the upper and lower rotors, determine the best design scheme, and verify the rotation order of the upper and lower rotors, and their impact on the flight state of the drone, especially the take-off state.

[0030] By setting up a base 1, a support platform 2 and a deflection detection mechanism, and using eight pressure detection components 4 representing the orientation, the tilt direction of the coaxial UAV in various states can be detected, which can facilitate the experimental verification of the UAV heading control and the rotation of the rotors, so as to design a more stable coaxial UAV.

[0031] Example 2:

[0032] like Figure 1-2 As shown, a door-shaped frame 6 is installed on the base 1, a bracket 7 is installed below the frame 6, and a high-speed camera 8 is installed on the bracket 7. The high-speed camera 8 is located above the support plate 3 (coaxial drone). The high-speed camera 8 shoots and records the lower part. The drone below is shot by the high-speed camera 8. By viewing the shot video frame by frame, it is convenient to judge the start and stop sequence between the upper and lower rotors of the drone, and then it is convenient to verify the influence of the rotation sequence of the upper and lower rotors and the different interval time on the drone.

[0033] By installing a high-speed camera 8 above the drone, the actual state of the drone during the experiment is recorded using the high-speed camera 8, which facilitates the determination of the start and stop sequence between the upper and lower rotors of the drone.

[0034] Example 3:

[0035] like Figure 1-2 As shown, multiple high-speed cameras 8 are mounted on bracket 7, each focused at the height of the upper and lower rotors. These cameras 8 can cover the space below the drone, ensuring that the rotors are no longer within range during a certain moment of recording. It is important to note that the timing and parameters of all cameras are calibrated to minimize significant errors. By analyzing the footage from multiple high-speed cameras 8, errors can be minimized, facilitating accurate determination of the rotational sequence between the upper and lower rotors.

[0036] By setting up a plurality of high-speed cameras 8, it is possible to conveniently record a plurality of experimental videos and verify each other, so that the data is more complete and the error of the experiment is conveniently reduced.

[0037] Example 4:

[0038] like Figure 1-2 As shown, an electric push rod 9 is installed between the frame 6 and the bracket 7. When in use, the height of the bracket 7 is adjusted by the electric push rod 9, and the height of the high-speed camera 8 can be conveniently adjusted, so that the rotor can be quickly focused when used in fixed focus mode.

[0039] By installing an electric push rod 9 between the frame 6 and the bracket 7, the height of the high-speed camera 8 can be easily adjusted.

[0040] Example 5:

[0041] like Figure 4 As shown, a clamp 10 is installed on the top of the support plate 3. The clamp 10 is used to fix the drone. Its structure can be specifically designed according to the structure of the drone, or a universal clamp for drones can be used. Its structure will not be repeated here.

[0042] By installing the clamp 10 on the top of the support plate 3 , the drone can be easily fixed on the top of the support plate 3 .

[0043] Example 6:

[0044] like Figure 1 and Figure 3As shown, in this embodiment, the support platform 2 is rotatably connected to the base 1 through a bearing, and a plurality of tension detection components 12 are installed on the frame 6. A second spring 11 is installed between the tension detection component 12 and the support platform 2. The rotor design of the coaxial UAV, the machining accuracy and specifications of the rotor have a great influence on the stability of the UAV. During the experiment, the upper and lower rotors rotate. Due to the manufacturing accuracy of the UAV, especially under the influence of the rotor shape and accuracy, it is possible that the UAV will be horizontally twisted in the horizontal direction. The horizontal torsional force generated is indirectly detected by the tension detection component 12, so that the best rotor design scheme can be found during the design, including the rotor shape and design parameters.

[0045] By installing the tension detection component 12 between the frame 6 and the support platform 2, it is possible to conveniently test the horizontal deflection of the UAV during flight.

[0046] Example 7:

[0047] like Figure 5 As shown, multiple sleeves 13 are installed on the bracket 7, the high-speed camera 8 is connected and fixed to the sleeve 3, and a limit screw 14 is installed on the sleeve 3. When in use, the limit screw 14 is rotated to release the lock of the sleeve 3, and the sleeve 3 is slid to slide along the bracket 7, thereby adjusting the position of the high-speed camera 8 so that it can be aligned with the end position close to the rotor, and then the limit screw 14 is locked to fix the sleeve 3.

[0048] By installing the sliding sleeve 13 on the bracket 7, the position of the high-speed camera 8 can be easily adjusted so that it can be aligned with the end of the rotor that is close to the rotor.

[0049] Working principle: When in use, the coaxial drone is fixed on the top of the support plate 3, and then the pressure values ​​detected by the pressure sensor in the corresponding directions are all set to zero, and then the drone is started to simulate the drone's take-off, hovering, turning, flight and other postures. The pressure changes in the directions displayed on the display screen are used to show which direction the pressure change value is the smallest, which means that the drone is tilted to that side, representing the flight direction of the drone, which is convenient for judging the stability of the drone in various states and the accuracy of heading control. Similarly, it is also convenient to conduct experimental verification on coaxial drones with different rotation orders of the upper and lower rotors, determine the best design scheme, and verify the rotation order of the upper and lower rotors, and their impact on the drone's flight state, especially the stability of the take-off state.

Claims

1. A coaxial UAV heading control and rotor rotation verification test device, characterized by: include: A base (1), a support platform (2) being mounted on the base (1), and a deflection detection mechanism being provided on the support platform (2); The deflection detection mechanism comprises a support plate (3) arranged above the support platform (2), and eight detection components are arranged between the support plate (3) and the support platform (2); The detection assembly comprises a pressure detection component (4) fixedly mounted on the top of the detection platform, and a first spring (5) is installed between the pressure detection component (4) and the support plate (3).

2. A coaxial UAV heading control and rotor rotation verification test device according to claim 1, characterized in that: A frame (6) is installed on the base (1), a bracket (7) is installed below the frame (6), and a high-speed camera (8) is installed on the bracket (7).

3. A coaxial UAV heading control and rotor rotation verification test device according to claim 2, characterized in that: The number of the high-speed cameras (8) is multiple.

4. The coaxial UAV heading control and rotor rotation verification test device according to claim 2 is characterized in that: An electric push rod (9) is installed between the frame (6) and the bracket (7).

5. The coaxial UAV heading control and rotor rotation verification test device according to claim 2 is characterized in that: A plurality of tension detection components (12) are installed on the frame (6), and a second spring (11) is installed between the tension detection components (12) and the support platform (2).

6. The coaxial UAV heading control and rotor rotation verification test device according to claim 2 is characterized in that: A plurality of sliding sleeves (13) are installed on the bracket (7), and the high-speed camera (8) is connected to the sliding sleeves (13).

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