Micro-gravity test stabilizing tool integrated with physical gyroscope

Abstract

The utility model discloses a kind of microgravity test stable tool of integrated physical gyro, belong to tool design technical field.The tool includes the main body structure consistent with target equipment appearance and mass characteristic, integrated physical gyro assembly in the inside of main body structure, driving assembly.Main body structure simulates the mass characteristic of target equipment, gyro assembly includes rotor, gimbals and vibration base, rotor maintains high-speed rotation by angular momentum conservation after initial driving, and reaction torque is generated using fixed shaft to inhibit tool attitude deviation.Driving assembly provides initial driving for rotor.The utility model has the advantages of compact structure, not dependent on external constraint, low power consumption and adapt to long-term free suspension scene, suitable for aerospace equipment, component and other microgravity simulation test.

Description

Technical Field

[0001] This utility model relates to a microgravity testing stabilization fixture with an integrated physical gyroscope, belonging to the field of fixture design technology. Background Technology

[0002] In the aerospace field, for certain special test scenarios, such as simulating the shape and mass characteristics of target loads using test fixtures to verify their performance in microgravity environments, two requirements are placed on the fixtures: firstly, rigid constraints such as locking or clamping must be avoided to realistically reproduce the free motion state under microgravity; secondly, the fixtures must remain stable without external support to prevent vibrations, rotations, or other attitude changes from interfering with test accuracy.

[0003] Currently, some solutions address the tooling stability issue in microgravity environments by employing inertial navigation devices or active control algorithms. However, the former suffers from slow response speed and weak anti-interference capabilities, while the latter relies on real-time feedback from external sensors and has a complex control system, increasing the tooling's size, power consumption, and design complexity. For example, existing methods that use robotic arms combined with force sensors to simulate microgravity environments can achieve a certain degree of stable control, but they require extremely high precision in adjusting the tooling's motion trajectory and attitude, and the operation process is cumbersome. Utility Model Content

[0004] The technical problem solved by this utility model is to overcome the shortcomings of the prior art and propose a microgravity testing stabilization fixture with integrated physical gyroscope, which solves the technical problem that the fixture is prone to shaking or rotation when there is no rigid constraint in the microgravity environment, resulting in the distortion of test data.

[0005] The technical solution of this utility model is:

[0006] A microgravity testing stabilization fixture integrating a physical gyroscope, comprising a main structure, a physical gyroscope assembly, and a drive assembly;

[0007] The main structure is a shell, and the outer surface of the shell is shaped according to the contour of the simulated target equipment.

[0008] The physical gyroscope assembly is located inside the housing cavity and includes a rotor, a shock-absorbing base, and a bracket. The rotor is mounted on the bracket, and the bracket is connected to the inner wall of the housing through the shock-absorbing base.

[0009] The drive assembly is located inside the housing cavity and is connected to the rotor.

[0010] Furthermore, the center point of the rotor is located at the center of gravity of the tooling, and the rotation axis of the rotor coincides with the pitch axis of the tooling.

[0011] Furthermore, the physical gyroscope assembly also includes an air bearing, with the rotor mounted on a bracket via the air bearing.

[0012] Furthermore, the rotor is a solid steel flywheel, and its rated speed covers the operating conditions of the tooling.

[0013] Furthermore, a counterweight is installed at each end of the housing. By changing the weight of each counterweight, the total mass and center of gravity of the tooling are adjusted to simulate the mass characteristics of the target equipment.

[0014] Furthermore, the drive assembly includes a motor, a reducer, and a battery; the motor is connected to the input end of the reducer, the output end of the reducer is connected to the rotor, and the motor power is provided by the battery.

[0015] Furthermore, the shock-absorbing base is made of silicone damping material, which maintains elasticity within the temperature range required for the tooling's use, allowing the support to precess freely under the action of angular momentum.

[0016] Furthermore, the housing consists of two parts, an upper part and an lower part, which are connected by screws and pins.

[0017] Furthermore, the outer surface of the housing replicates the flange interface and heat dissipation groove features of the target device.

[0018] Furthermore, the drive assembly generates driving force, driving the rotor to accelerate from rest to the rated speed, and the rotor generates constant angular momentum to maintain rotation; when the tooling deviates in attitude, the rotor's rotation axis remains unchanged in inertial space, and generates a reaction torque on the tooling body through the support to counteract the disturbance torque.

[0019] The advantages of this utility model compared with the prior art are as follows:

[0020] (1) Based on the fixed axis of the physical gyroscope, this utility model can suppress the angular displacement of the tooling in real time under microgravity environment, meet the requirements of high-precision testing, and has high stability.

[0021] (2) Based on pure mechanical inertia, this utility model has a better response time than the transmission and electronic control system, which can effectively suppress high-frequency vibration and has the characteristics of fast response.

[0022] (3) This utility model is an integrated design of gyroscope component and tooling body, with the same volume as the target device, no need for additional external support structure, and has the characteristics of compact structure.

[0023] (4) This utility model only requires a short power supply during initial startup, does not require other drives during testing, has a simple mechanical structure, low maintenance cost, is suitable for long-term repeated use, and has the characteristics of low power consumption and easy maintenance. Attached Figure Description

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0025] Figure 1 This is a cross-sectional view of the microgravity testing stabilization fixture according to an embodiment of the present invention;

[0026] Figure 2 This is a front view of the microgravity testing stabilization fixture according to an embodiment of this utility model. Detailed Implementation

[0027] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0028] This invention proposes a microgravity testing stabilization fixture integrating a physical gyroscope, addressing the technical problem of jitter or rotation that easily occurs when the fixture lacks rigid constraints in a microgravity environment, leading to distorted test data. Figure 1 As shown, this fixture includes a main structure 1, a gyroscope assembly, and a drive assembly. The main structure 1 has the same shape and mass characteristics as the target device, and the gyroscope assembly and drive assembly are integrated into the center of gravity inside the main structure 1.

[0029] The main structure 1 is a shell with the same geometry as the target equipment, made of lightweight, high-strength aluminum alloy or composite materials. Its shape is formed according to the outline of the target equipment, and its outer surface replicates features such as flange interfaces and heat dissipation grooves of the target equipment. Figure 2 As shown, this ensures consistency with the aerodynamic characteristics of the target equipment. The housing is divided into upper and lower parts, connected by screws and pins. Each part is equipped with a counterweight 5. The total mass and center of gravity of the fixture can be adjusted by using the detachable counterweight 5 to simulate the mass characteristics of the target equipment and meet the mass simulation requirements of different test scenarios.

[0030] The gyroscope assembly includes a high-speed rotating rigid rotor 3, a universal joint 4 supporting the rotor 3, and a vibration-damping base 2 for fixing the gyroscope. The rotor 3 maintains high-speed rotation after initial drive by conserving angular momentum, utilizing its fixed-axis property to generate a reaction torque to suppress tool attitude deviation. The rotor 3 is a solid steel flywheel, mounted at the center of the universal joint 4 via high-precision bearings to reduce rotor speed decay. The rotor is initially driven to its rated speed by the drive assembly. The universal joint 4 is fixed to the vibration-damping base 2 with screws, and the vibration-damping base 2 is connected to the main structure 1 by screws, ensuring that the gyroscope's rotation axis coincides with the tool's pitch axis, making the angular momentum direction perpendicular to the tool's potential rotation direction to maximize the anti-interference torque. The vibration-damping base 2 is a flange structure with a hollow center for mounting the gyroscope assembly; the outer flange is connected to the main structure, isolating the vibration transmission during rotor 3 rotation while allowing the universal joint 4 to precess freely under the influence of angular momentum. The shock-absorbing base 2 uses silicone damping material instead of nitrile rubber, which maintains elasticity in a temperature range of -40℃ to 80℃ and can adapt to extreme environment testing.

[0031] The drive assembly includes a reducer 6, a battery 7, and a 24V micro motor 8. The 24V micro motor 8 provides initial drive for the rotor 3, and the motor power is supplied by the battery 7. The micro motor 8 drives the rotor 3 from rest to its rated speed via the reducer 6, after which power is cut off. The micro motor 8, the reducer 6, and the battery 7 are mounted together on another shock-absorbing base 2.

[0032] The working principle of this invention is as follows: Before testing, the micro motor 8 drives the rotor 3 to its rated speed. The micro motor 8 is then de-energized, and the rotor 3 maintains high-speed rotation due to the conservation of angular momentum. When the fixture is in a microgravity environment, the lack of external rigid constraints makes it susceptible to small disturbance torques, leading to deflection or vibration. At this time, the high-speed rotating rotor 3 generates constant angular momentum. When the fixture experiences attitude deviation, the rotor 3's rotation axis maintains its direction in inertial space, generating a reaction torque on the fixture body through the universal bracket 4 to counteract the disturbance torque and thus suppress rotation. The shock-absorbing base 2 reduces the interference of external vibrations on the gyroscope.

[0033] This invention integrates a physical gyroscope into the fixture, utilizing the fixed-axis property of a high-speed rotating rigid body to effectively suppress changes in the fixture's angular displacement and angular velocity through its own inertial torque, thereby achieving autonomous stabilization. Compared with existing technologies, this fixture does not rely on external support structures, nor does it require external air sources, power sources, or control systems. It maintains stability solely through the initial drive of rotor rotation, relying on the conservation of angular momentum to effectively suppress changes in the fixture's angular displacement and angular velocity, thus achieving autonomous stabilization and meeting the testing requirements of "no rigid constraints" in microgravity environments.

[0034] This invention features a compact structure, rapid response, and strong anti-interference capabilities, making it particularly suitable for microgravity testing scenarios where rigid fixation is not feasible or where prolonged free suspension is required. Through the integrated design of the physical gyroscope and the tooling structure, it provides a reliable, stable, and practical solution for high-precision attitude stabilization in scenarios without rigid constraints.

[0035] The above-described embodiments are merely preferred embodiments of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution should be included within the protection scope of this utility model.

Claims

1. A microgravity testing stabilization fixture integrating a physical gyroscope, characterized in that, Includes the main structure, physical gyroscope components, and drive components; The main structure is a shell, and the outer surface of the shell is shaped according to the contour of the simulated target equipment. The physical gyroscope assembly is located inside the housing cavity and includes a rotor, a shock-absorbing base, and a bracket. The rotor is mounted on the bracket, and the bracket is connected to the inner wall of the housing through the shock-absorbing base. The drive assembly is located inside the housing cavity and is connected to the rotor.

2. The microgravity testing stabilization fixture with an integrated physical gyroscope according to claim 1, characterized in that, The center point of the rotor is located at the center of gravity of the tooling, and the rotation axis of the rotor coincides with the pitch axis of the tooling.

3. The microgravity testing stabilization fixture with an integrated physical gyroscope according to claim 1, characterized in that, The physical gyroscope assembly also includes an air bearing, with the rotor mounted on a bracket via the air bearing.

4. A microgravity testing stabilization fixture for an integrated physical gyroscope according to any one of claims 1 to 3, characterized in that, The rotor is a solid steel flywheel, and its rated speed covers the operating conditions of the tooling.

5. The microgravity testing stabilization fixture with an integrated physical gyroscope according to claim 1, characterized in that, A counterweight is installed at each end of the housing. By changing the weight of each counterweight, the total mass and center of gravity of the tooling can be adjusted.

6. The microgravity testing stabilization fixture with an integrated physical gyroscope according to claim 1, characterized in that, The drive assembly includes a motor, a reducer, and a battery; the motor is connected to the input end of the reducer, the output end of the reducer is connected to the rotor, and the motor is powered by the battery.

7. The microgravity testing stabilization fixture for an integrated physical gyroscope according to claim 1, characterized in that, The shock-absorbing base is made of silicone damping material and maintains elasticity within the temperature range required for the tooling's use, allowing the support to precess freely under the action of angular momentum.

8. The microgravity testing stabilization fixture for an integrated physical gyroscope according to claim 1, characterized in that, The housing consists of two parts, an upper part and an lower part, which are connected by screws and pins.

9. A microgravity testing stabilization fixture with an integrated physical gyroscope according to claim 1, characterized in that, The outer surface of the housing replicates the flange interface and heat dissipation groove features of the target device.

10. A microgravity testing stabilization fixture for an integrated physical gyroscope according to claim 1, characterized in that, The drive components generate driving force, which drives the rotor to accelerate from rest to the rated speed, and the rotor generates constant angular momentum to maintain rotation. When the tooling deviates in attitude, the rotor's rotation axis remains unchanged in the inertial space, generating a reaction torque on the tooling body through the support to counteract the disturbance torque.

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