A simulation device for microgravity deployment experiments on Earth.

Abstract

A simulation device for microgravity deployment experiments on the ground is mainly composed of an adjustable leveling structure assembly, an adjustable anti-creep rope assembly, a magnetic levitation de-rotation structure assembly, an adjustable counterweight assembly, and a safety protection rope lock. This device significantly reduces resistance during operation and improves redundancy safety and reliability during microgravity deployment experiments. The invention features simple structure, low rotational resistance, high suspension compensation accuracy, strong versatility and design flexibility, high redundancy safety protection, and good scalability, making it suitable for deployment experiments of large-scale space deployable structures such as space deployable antennas and flexible deployable cabins.

Description

Technical Field

[0001] This invention relates to a simulation device for ground-based microgravity deployment experiments, belonging to the field of space microgravity deployment technology. Background Technology

[0002] With the development of space deployable structures, large-scale space deployable structures are increasingly widely used in various aerospace fields, such as the construction of new technology satellites and space stations. Correspondingly, the demand for ground-based microgravity simulation deployment test technologies is becoming more urgent. Domestic and international research institutions have conducted extensive research in this area, proposing various ground-based microgravity simulation deployment test technologies and methods to meet the verification needs of various industries by simulating the weightless environment of space.

[0003] Improvements and innovations in ground-based microgravity simulation deployment technology have continuously driven the development of space-deployable structures. The two-dimensional folding mechanism is a test product used to support the lightweight payload of a novel technology satellite. Its on-orbit environment is microgravity, which differs significantly from the Earth's surface gravity environment. Successfully deploying the test product in its folded state is a key technology for testing and verification under ground-based simulated on-orbit microgravity conditions.

[0004] To improve the quality of successful deployment of two-dimensional folding mechanisms in a microgravity environment under ground simulation, a microgravity semi-physical simulation system using a robotic arm as the physical entity can be employed to achieve folding and deployment. For example, the invention CN105345841A, titled "An Air-Floating Support Device for a Space Robotic Arm" (invented by Fan Qinglin, Liu Shuyuan, et al.), uses force sensors to detect the pressure on the upper and lower plates, determining whether the robotic arm reliably places its center of gravity on the air-floating support device. This simulates the microgravity environment of a space robotic arm and enables horizontal support and rolling functions for the robotic arm. While this approach improves the reliability and safety of the experimental product, it requires high precision control during the deployment process of the two-dimensional folding mechanism and is relatively complex and costly to operate.

[0005] The unfolding of a two-dimensional folding mechanism is achieved by combining magnetic levitation drive and suspension compensation, such as the "Suspension Gravity Compensation Device Based on Magnetic Levitation Follow-up" CN208198861U inventors: Qiu Xusong, Wang Yanan, etc. This method has good comprehensive performance, such as simple structure, high gravity compensation accuracy, strong versatility, and good scalability. However, it has certain limitations on the size requirements of the two-dimensional folding mechanism, is relatively complex to operate, and has a high cost. Summary of the Invention

[0006] The technical problem solved by this invention is to overcome the shortcomings of the prior art and provide a simulation device for the folding and unfolding process of a two-dimensional folding mechanism in a complex on-orbit environment. This device can achieve high-precision measurement of the positioning angle / size of the two-dimensional folding mechanism through high-precision measurement, which can improve the measurement accuracy by n times (n is the arm length ratio).

[0007] The technical solution of this invention is:

[0008] A simulation device for microgravity deployment tests on the ground includes: an adjustable leveling structure assembly, an adjustable anti-creep rope assembly, a magnetic levitation de-rotation structure assembly, an adjustable counterweight assembly, a safety protection rope lock, and the test product.

[0009] The leveling structure provides docking interfaces for the adjustable anti-creep rope assembly, adjustable counterweight assembly, safety rope, and test product. The leveling structure is symmetrical, with one end connected to the adjustable counterweight assembly and the other end connected to the test product. The mass of the adjustable counterweight assembly varies with the mass of the test product, ensuring balance between the left and right ends of the leveling structure. The magnetic levitation anti-rotation structure is connected to both ends of the adjustable leveling structure via two adjustable anti-creep rope assemblies. Overall balance is achieved through fine-tuning of the adjustable anti-creep rope assemblies. Both ends of the adjustable leveling structure are also connected to the magnetic levitation anti-rotation structure via safety rope locks for safety protection.

[0010] Furthermore, the adjustable leveling structure component includes an arm-length platform structure, a leveling fine-tuning device, a hanging device, and a product connection device;

[0011] The horizontal fine-tuning device is installed on the upper surface of the boom platform structure, the hanging device is fixed at both ends of the upper surface of the boom platform structure, and the product connection device is fixedly connected to the boom platform structure through the mounting through holes provided on the boom platform structure.

[0012] Furthermore, the horizontal fine-tuning device, the hanging device, and the product connection device are all symmetrically distributed, with the product connection device located inside the hanging device; the two product connection devices are respectively connected to the adjustable counterweight component and the test product; both hanging devices are connected to the adjustable anti-creep rope component and the safety protection rope lock.

[0013] Furthermore, the arm length ratio of the adjustable leveling structure component is n = L1 / L2, where L1 is the lever arm length of the test product on the adjustable leveling structure component; and L2 is the lever arm length of the adjustable counterweight component on the adjustable leveling structure component.

[0014] Furthermore, the adjustable anti-creep rope assembly includes an anti-creep rope, a fine-tuning movement device, and a fine-tuning telescopic device;

[0015] The anti-creep rope is installed and fixed at one end of the fine-tuning moving device, and the other end of the fine-tuning moving device is connected to the fine-tuning telescopic device.

[0016] The length of the anti-creep rope is controlled by fine-tuning the moving device and the telescopic device.

[0017] Furthermore, the magnetic levitation despinning structure component includes a magnetic levitation buoyancy shield component and a magnetic levitation rotor component;

[0018] The magnetic levitation cover assembly includes a magnetic levitation cover structure, two side hoisting structures, a lower hoisting structure, and an upper hoisting structure; the two side hoisting structures are installed on both sides of the magnetic levitation cover structure, and the upper hoisting structure and the lower hoisting structure are installed above and below the magnetic levitation cover structure, respectively;

[0019] The magnetic levitation rotor assembly includes a magnetic levitation rotor and an infrared rangefinder;

[0020] The magnetic levitation rotor assembly is installed inside the magnetic levitation buoyancy cover assembly, and one end of the anti-creep rope is connected to the lower hoisting device; the upper hoisting device is used to connect with external mechanical equipment.

[0021] Furthermore, the adjustable counterweight assembly structure includes an assembly cavity and an adjustable counterweight unit; the adjustable counterweight assembly structure is configured according to the actual mass of the test product; the assembly cavity is connected to the product connection device; the test product is connected to the product connection device;

[0022] The weight of the adjustable weight component structure is m2 = m1 / n, where m1 is the actual mass of the test product and m2 is the actual mass of the adjustable weight component structure.

[0023] Furthermore, the two ends of the safety rope lock are connected to the hanging device and the two side hoisting structures, respectively, and the two safety rope locks are symmetrically distributed.

[0024] Furthermore, the simulation device is lifted by connecting a hoisting device to a mechanical equipment, and the lifting height is accurately measured using an infrared rangefinder. At the same time, the device is leveled by a fine-tuning moving device and a fine-tuning telescopic device, and the horizontal state is confirmed by a horizontal fine-tuning device.

[0025] Furthermore, when an external power source is connected, a strong magnetic field is generated inside the magnetic levitation structure component, which separates the magnetic levitation rotor component and the magnetic levitation buoyancy shield component. The magnetic levitation rotor component is stably suspended under the action of the magnetic field and is not subject to any friction during the movement. When an external force is applied, the magnetic levitation buoyancy shield component follows the external unfolding structure to achieve 360° frictionless rotation.

[0026] Furthermore, this invention also proposes a method for controlling the arm length ratio to eliminate gravity and for high-precision deformation testing, the steps of which are as follows:

[0027] Step 1: Measure the weight m1 of the unfolding mechanism and the length L1 of the unfolding mechanism swing arm. Based on the unfolding accuracy magnification requirements and the arm length ratio n, calculate the weight m2 of the adjustable counterweight component and the lever arm length L2 of the adjustable counterweight component.

[0028] n = L1 / L2, where L1 is the lever arm length of the test product on the adjustable leveling structure component; L2 is the lever arm length of the adjustable counterweight component on the adjustable leveling structure component;

[0029] Step 2: Assemble the ground microgravity deployment test simulation device and adjust the length of the adjustable anti-creep rope assembly to make the leveling structure assembly reach a horizontal state;

[0030] Step 3: Power on the magnetic levitation despinning structure component to separate the magnetic levitation rotor component from the magnetic levitation buoyancy shield component;

[0031] Step 4: Release the locking mechanism and allow it to unfold under its own driving force. Test the speed of the structure's unfolding process and test the accuracy of the unfolding into place after the structure stabilizes.

[0032] The advantages of this invention compared to the prior art are:

[0033] (1) In view of the problems of low measurement accuracy and high implementation cost of the ground simulation of the microgravity deployment of the two-dimensional folding mechanism, the present invention designs a high-precision simulation device for the microgravity deployment test of the two-dimensional folding mechanism. The successful deployment of the two-dimensional folding mechanism in the ground simulation of the microgravity environment is not only simpler and more practical to operate, but also more universal and flexible in device design. The product is less restricted by space, has good deployment reliability and stability, high measurement accuracy, and low test cost.

[0034] (2) The microgravity simulation device of the present invention mainly includes two parts: a magnetic levitation de-rotation structure component and a suspension fine-tuning measurement device. The device mainly combines the lever principle to unload the gravity during the unfolding process of the two-dimensional folding mechanism. The magnetic levitation de-rotation structure component realizes the rotational motion of the follower structure. The magnetic levitation de-rotation structure component can rotate flexibly.

[0035] (3) This invention improves the accuracy of the suspended fine-tuning measurement device by combining the redundant design of the adjustable leveling structure component and the adjustable anti-creep rope component. The application of safety protection ropes enhances the safety of the device during operation. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the microgravity deployment test and high-precision measurement microgravity simulation device of the present invention;

[0037] Figure 2 This is a schematic diagram of an adjustable leveling structure component;

[0038] Figure 3 This is a schematic diagram of the adjustable creep-resistant rope assembly.

[0039] Figure 4 This is a schematic diagram of a magnetic levitation despinning structure component;

[0040] Figure 5 This is a schematic diagram of the adjustable weight component structure;

[0041] Figure 6 This is a schematic diagram showing the overall connection status of the microgravity simulation device and the tested product. Detailed Implementation

[0042] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0043] Based on the analysis of the characteristics of two-dimensional folding mechanisms, this invention designs a high-precision simulation device for microgravity deployment tests of two-dimensional folding mechanisms. This device features low two-dimensional servo resistance and high gravity unloading efficiency, greatly improving the reliability and stability of simulating folding and deployment of two-dimensional folding mechanisms under on-orbit microgravity conditions. It achieves efficient weight elimination and high-precision measurement of the final dimensions during ground tests of space-based two-dimensional folding mechanisms.

[0044] This invention relates to a high-precision simulation device for microgravity deployment tests of two-dimensional folding mechanisms. It employs a magnetically levitated de-rotation structure and a suspension-based fine-tuning measurement method, which improves the reliability and measurement accuracy of ground-based microgravity simulation tests of two-dimensional folding mechanisms while reducing the overall complexity of the device. Specifically, this is demonstrated as follows:

[0045] 1. The use of magnetic levitation anti-rotation structure components to replace the commonly used rotary joints greatly reduces the resistance of the entire device during operation;

[0046] 2. The use of suspension fine-tuning measurement instead of the traditional wire-supported counterweight system improves the high coordination of precise leveling of the entire device during application, while making the design of the arm-length platform structure more versatile and flexible;

[0047] 3. The use of safety rope locks improves the redundancy, safety, and reliability of the entire device during operation.

[0048] 4. This device requires lower costs and is more feasible compared to air flotation and liquid flotation methods.

[0049] 5. The design method of this device can be expanded and adjusted according to the size and weight of the test product, and can be adapted to two-dimensional microgravity deployment tests of products ranging from 50g to 500kg.

[0050] like Figure 1As shown, the present invention proposes a simulation device for microgravity deployment tests on the ground, comprising: an adjustable leveling structure component 1, an adjustable anti-creep rope component 2, a magnetic levitation de-rotation structure component 3, an adjustable counterweight component 4, a safety protection rope lock 5, and a test product 6.

[0051] The leveling structure component 1 provides docking interfaces for the adjustable anti-creep rope component 2, the adjustable counterweight component 4, the safety protection rope 5, and the test product 6. The leveling structure component 1 has a symmetrical structure, with the adjustable counterweight component 4 connected to one end and the test product 6 connected to the other end. The mass of the adjustable counterweight component 4 changes with the mass of the test product 6 to meet the balance requirements of the left and right ends of the leveling structure component 1. The magnetic levitation anti-rotation structure component 3 is connected to both ends of the adjustable leveling structure component 1 through two adjustable anti-creep rope components 2. The overall balance is achieved by fine-tuning the adjustable anti-creep rope components 2. Both ends of the adjustable leveling structure component 1 are also connected to the magnetic levitation anti-rotation structure component 3 through safety protection rope locks 5 for safety protection.

[0052] like Figure 2 As shown, the adjustable leveling structure component 1 includes an arm-length platform structure 101, a horizontal fine-tuning device 102, a hanging device 103, and a product connection device 104.

[0053] A horizontal fine-tuning device 102 is installed on the upper surface of the boom platform structure 101, a hanging device 103 is fixed to both ends of the upper surface of the boom platform structure 101, and a product connection device 104 is fixedly connected to the boom platform structure 101 through the mounting through holes provided on the boom platform structure 101.

[0054] The horizontal fine adjustment device 102, the hanging device 103, and the product connection device 104 are all symmetrically distributed, and the product connection device 104 is located inside the hanging device 103; the two product connection devices 104 are respectively connected to the adjustable counterweight component 4 and the test product 6; the two hanging devices 103 are each connected to the adjustable anti-creep rope component 2 and the safety protection rope lock 5.

[0055] The arm length ratio of the adjustable leveling structure component 1 is:

[0056] n = L1 / L2

[0057] Wherein, L1 is the lever arm length of the test product on the adjustable leveling structure component; L2 is the lever arm length of the adjustable counterweight component on the adjustable leveling structure component.

[0058] like Figure 3 As shown, the adjustable anti-creep rope assembly 2 includes an anti-creep rope 201, a fine-tuning moving device 202, and a fine-tuning telescopic device 203;

[0059] The anti-creep rope 201 is installed and fixed at one end of the fine adjustment moving device 202, and the other end of the fine adjustment moving device 202 is connected to the fine adjustment telescopic device 203.

[0060] The length of the anti-creep rope 201 is controlled by the fine-tuning moving device 202 and the fine-tuning telescopic device 203.

[0061] like Figure 4 As shown, the magnetic levitation despinning structure component 3 includes a magnetic levitation buoyancy shield component 301 and a magnetic levitation rotor component 302;

[0062] The magnetic levitation cover assembly 301 includes a magnetic levitation cover structure 3011, two side hoisting structures 3012, a lower hoisting structure 3013, and an upper hoisting structure 3014; the two side hoisting structures 3012 are installed on both sides of the magnetic levitation cover structure 3011, and the upper hoisting structure 3014 and the lower hoisting structure 3013 are installed above and below the magnetic levitation cover structure 3011, respectively;

[0063] The magnetic levitation rotor assembly 302 includes a magnetic levitation rotor 3021 and an infrared rangefinder 3022;

[0064] The magnetic levitation rotor assembly 302 is installed inside the magnetic levitation buoyancy cover assembly 301, and one end of the anti-creep rope 201 is connected to the lower hoisting device 3013; the upper hoisting device 3014 is used to connect with external mechanical equipment.

[0065] like Figure 5 As shown, the adjustable counterweight assembly structure 4 includes an assembly cavity 401 and an adjustable counterweight unit 402; the adjustable counterweight assembly structure 4 is configured according to the actual mass of the test product 6; the assembly cavity 401 is connected to the product connection device 104; the test product 6 is connected to the product connection device 104.

[0066] The weight of the adjustable counterweight component structure 4 is:

[0067] m2 = m1 / n

[0068] Where m1 is the actual mass of the test product; m2 is the actual mass of the adjustable heavy component structure.

[0069] The two ends of the safety rope lock 5 are respectively connected to the hanging device 103 and the two side hoisting structures 3012, and the two safety rope locks 5 are symmetrically distributed.

[0070] The simulation device is lifted by connecting the hoisting device 3014 to the mechanical equipment. The lifting height is accurately measured by the infrared rangefinder 3022. At the same time, the device is leveled by the fine adjustment moving device 202 and the fine adjustment telescopic device 203. The horizontal state is confirmed by the horizontal fine adjustment device 102.

[0071] When an external power source is connected, a strong magnetic field is generated inside the magnetic levitation structure component 3, which separates the magnetic levitation rotor component 302 and the magnetic levitation buoyancy shield component 301. The magnetic levitation rotor component 302 is stably suspended under the action of the magnetic field and is not subject to any friction during the movement. When an external force is applied, the magnetic levitation buoyancy shield component follows the external unfolding structure to achieve 360° frictionless rotation.

[0072] This invention also proposes a method for controlling the arm length ratio to eliminate gravity and for high-precision deformation testing, the steps of which are as follows:

[0073] Step 1: Measure the weight m1 of the unfolding mechanism and the length L1 of the unfolding mechanism swing arm. Based on the unfolding accuracy magnification requirements and the arm length ratio n, calculate the weight m2 of the adjustable counterweight component and the lever arm length L2 of the adjustable counterweight component.

[0074] n = L1 / L2, where L1 is the lever arm length of the test product on the adjustable leveling structure component; L2 is the lever arm length of the adjustable counterweight component on the adjustable leveling structure component;

[0075] Step 2: Assemble the ground microgravity deployment test simulation device and adjust the length of the adjustable anti-creep rope assembly to make the leveling structure assembly reach a horizontal state;

[0076] Step 3: Power on the magnetic levitation despinning structure component to separate the magnetic levitation rotor component from the magnetic levitation buoyancy shield component;

[0077] Step 4: Release the locking mechanism and allow it to unfold under its own driving force. Test the speed of the structure's unfolding process and test the accuracy of the unfolding into place after the structure stabilizes.

[0078] like Figure 6 The diagram shows the overall connection status of the microgravity simulation device and the test product. In the diagram, 11 is the microgravity simulation device for microgravity deployment test and high-precision measurement of the two-dimensional folding mechanism proposed in this invention; 12 is the external lifting equipment; and 13 is the two-dimensional folding deployment mechanism.

[0079] Example:

[0080] This invention mainly includes a magnetic levitation despinning structure component and a suspension fine-tuning measurement device, with an overall symmetrical structure. The magnetic levitation despinning structure component includes a magnetic levitation buoyancy shield component 301 and a magnetic levitation rotor component 302. The magnetic levitation buoyancy shield is equipped with a magnetic levitation module, and the magnetic levitation rotor component is installed inside the magnetic levitation buoyancy shield. Utilizing the magnetic levitation technology in magnetic levitation trains, it adopts the suspension principle of normal conduction adsorption. After the magnetic levitation buoyancy shield is powered on, a strong magnetic field is generated in the internal space. Under the action of the magnetic field, the magnetic levitation rotor component can be stably suspended and rotate according to the trajectory of the internal structure of the magnetic levitation buoyancy shield. When an external force is applied, the magnetic levitation buoyancy shield component can rotate 360°, thus achieving the function of despinning.

[0081] The magnetic levitation cover assembly consists of a magnetic levitation cover structure, two side hoisting structures, a lower hoisting structure, and an upper hoisting structure. The magnetic levitation cover structure provides hoisting interfaces with connection functions and serves as the main load-bearing structure.

[0082] The magnetic levitation rotor assembly consists of a magnetic levitation rotor and an infrared ranging device. The infrared ranging device measures the distance to the ground and transmits the data wirelessly to ground observers. When the magnetic levitation rotor structure is powered on, it generates a strong magnetic levitation force, lifting the magnetic levitation cover and enabling frictionless rotation.

[0083] The suspended fine-tuning measurement device includes an adjustable leveling structure assembly, an adjustable creep-resistant rope assembly, an adjustable counterweight assembly, and a safety rope lock. The adjustable leveling structure assembly consists of an arm-length platform structure, a leveling fine-tuning device, a suspension device, and a product connection device. The arm-length ratio of the adjustable leveling structure assembly is n = L1 / L2, and the weight of the adjustable counterweight assembly is m2 = m1 / n. This allows for a magnification of the positioning accuracy of the tested product by n times, greatly improving the measurement accuracy of the positioning dimensions of the two-dimensional folding mechanism.

[0084] The arm-length platform structure is designed based on the principle of torque balance, taking into account the weight of the test product and the adjustability of the counterweight. A horizontal fine-tuning device is installed on its structure to ensure the test product and counterweight remain balanced. The suspension device provides the connection interface for the adjustable anti-creep rope assembly, the magnetic levitation anti-rotation structure assembly, and the safety rope lock. The product connection device provides the connection interface between the adjustable counterweight assembly and the test product.

[0085] The adjustable counterweight assembly consists of an assembly cavity and adjustable counterweight units. The assembly cavity is a metal canister, and the adjustable counterweight units are composed of metal particles / projectiles weighing 0.1g to 100g. The type and number of counterweight units can be adjusted according to the requirements of the structural balancing process to achieve a counterweight accuracy of up to 0.1g.

[0086] The adjustable anti-creep rope assembly includes an anti-creep rope, a fine-tuning movement device, and a fine-tuning telescopic device. The adjustable anti-creep rope is made of high-strength special spun fibers such as aramid, polyimide, and PBO fiber. This assembly is a key component connecting the magnetic levitation buoyancy shield structure and the arm-length platform structure. The length of the anti-creep rope can be controlled by the fine-tuning movement device and the fine-tuning telescopic device to coordinate with the arm-length platform structure for redundant fine-tuning.

[0087] The safety ropes are also made of high-strength specialty fibers such as aramid, polyimide, and PBO fiber. The use of these ropes significantly improves the safety of the entire device's suspension. This device can be widely used for deployment verification tests of two-dimensional folding mechanisms.

[0088] This invention enables simulated on-orbit microgravity deployment of two-dimensional folding products. Based on the principles of space mechanism servoing and lever micro-deformation amplification, it achieves high-precision measurement of the positioning dimensions of the two-dimensional folding mechanism. Simultaneously, the magnetic levitation de-rotation structure in this invention eliminates gravity and reduces rotational resistance, completely offsetting the mass of the tested product. Based on the product's own structural performance, it reliably unfolds, meeting the versatility and flexibility design requirements for microgravity deployment tests and high-precision measurement devices for two-dimensional folding mechanisms. This invention also proposes an anti-creep rope based on high-strength special-spun fiber rope, significantly improving the accuracy of rope length control during the experiment and reducing measurement errors.

[0089] The parts of this invention not described in detail are common knowledge to those skilled in the art.

Claims

1. A simulation device applied to a ground microgravity deployment test, characterized in that, include: Adjustable leveling structure assembly (1), adjustable anti-creep rope assembly (2), magnetic levitation de-rotation structure assembly (3), adjustable counterweight assembly (4), safety protection rope (5), and test product (6); The adjustable leveling structure component (1) provides docking interfaces for the adjustable anti-creep rope component (2), the adjustable counterweight component (4), the safety protection rope (5), and the test product (6). The adjustable leveling structure component (1) is a symmetrical structure, with the adjustable counterweight component (4) connected to one end and the test product (6) connected to the other end. The mass of the adjustable counterweight component (4) changes with the mass of the test product (6) to meet the balance requirements of the left and right ends of the adjustable leveling structure component (1). The magnetic levitation de-rotation structure component (3) is connected to both ends of the adjustable leveling structure component (1) through two adjustable anti-creep rope components (2). The overall balance is achieved by fine-tuning the adjustable anti-creep rope components (2). The two ends of the adjustable leveling structure component (1) are also connected to the magnetic levitation de-rotation structure component (3) through the safety protection rope (5) for safety protection. The adjustable leveling structure component (1) includes an arm-length platform structure (101), a leveling fine adjustment device (102), a hanging device (103), and a product connection device (104). A horizontal fine adjustment device (102) is installed on the upper surface of the boom platform structure (101), a hanging device (103) is fixed at both ends of the upper surface of the boom platform structure (101), and a product connection device (104) is fixedly connected to the boom platform structure (101) through the mounting through hole provided on the boom platform structure (101). The horizontal fine-tuning device (102), the hanging device (103), and the product connection device (104) are all symmetrically distributed, and the product connection device (104) is located inside the hanging device (103); the two product connection devices (104) are respectively connected to the adjustable counterweight assembly (4) and the test product (6); the two hanging devices (103) are each connected to the adjustable anti-creep rope assembly (2) and the safety protection rope (5); The adjustable anti-creep rope assembly (2) includes an anti-creep rope (201), a fine-tuning movement device (202), and a fine-tuning telescopic device (203). The anti-creep rope (201) is installed and fixed at one end of the fine adjustment moving device (202), and the other end of the fine adjustment moving device (202) is connected to the fine adjustment telescopic device (203). The length of the anti-creep rope (201) is controlled by the fine-tuning moving device (202) and the fine-tuning telescopic device (203).

2. The simulation device for ground-based microgravity deployment test according to claim 1, characterized in that: The arm length ratio of the adjustable leveling structure component (1) is n=L1 / L2, where L1 is the lever arm length of the test product on the adjustable leveling structure component; L2 is the lever arm length of the adjustable counterweight component on the adjustable leveling structure component.

3. The simulation device for ground-based microgravity deployment testing of claim 1, wherein: The magnetic levitation despinning structure assembly (3) includes a magnetic levitation buoyancy shield assembly (301) and a magnetic levitation rotor assembly (302). The magnetic levitation cover assembly (301) includes a magnetic levitation cover structure (3011), two side hoisting structures (3012), a lower hoisting structure (3013), and an upper hoisting structure (3014); the two side hoisting structures (3012) are installed on both sides of the magnetic levitation cover structure (3011), and the upper hoisting structure (3014) and the lower hoisting structure (3013) are installed above and below the magnetic levitation cover structure (3011), respectively. The magnetic levitation rotor assembly (302) includes a magnetic levitation rotor (3021) and an infrared rangefinder (3022). The magnetic levitation rotor assembly (302) is installed inside the magnetic levitation buoyancy shield assembly (301), and one end of the anti-creep rope (201) is connected to the lower hoisting structure (3013); the upper hoisting structure (3014) is used to connect with external mechanical equipment.

4. The simulation device for ground-based microgravity deployment testing of claim 3, wherein: The adjustable counterweight assembly (4) includes an assembly cavity (401) and an adjustable counterweight unit (402); the adjustable counterweight assembly (4) is configured according to the actual mass of the test product (6); the assembly cavity (401) is connected to the product connection device (104); the test product (6) is connected to the product connection device (104); The weight of the adjustable counterweight component (4) is m2=m1 / n, where m1 is the actual mass of the test product and m2 is the actual mass of the adjustable counterweight component structure.

5. The simulation device for microgravity deployment experiments on Earth according to claim 3, characterized in that: The two ends of the safety protection rope (5) are respectively connected to the hanging device (103) and the two sides of the hoisting structure (3012), and the two safety protection ropes (5) are symmetrically distributed.

6. The simulation device for microgravity deployment experiments on Earth according to claim 3, characterized in that: The simulation device is lifted by connecting the hoisting device (3014) to the mechanical equipment, and the lifting height is accurately measured by the infrared rangefinder (3022). At the same time, the device is leveled by the fine adjustment moving device (202) and the fine adjustment telescopic device (203), and the horizontal state is confirmed by the horizontal fine adjustment device (102).

7. The simulation device for microgravity deployment experiments on Earth according to claim 3, characterized in that: When the external power is connected, a strong magnetic field is generated in the internal space of the magnetic levitation de-rotation structure component (3), which realizes the separation between the magnetic levitation rotor component (302) and the magnetic levitation buoyancy shield component (301). The magnetic levitation rotor component (302) is stably suspended under the action of the magnetic field and is not subject to any friction during the movement. When an external force is applied, the magnetic levitation buoyancy shield component follows the external unfolding structure to achieve 360° frictionless rotation.

8. A method for arm length ratio control, gravity elimination, and high-precision deformation testing based on the simulation device described in claim 1, characterized in that... The steps are as follows: Step 1: Measure the weight m1 of the unfolding mechanism and the length L1 of the unfolding mechanism swing arm. Based on the unfolding accuracy magnification requirements and the arm length ratio n, calculate the weight m2 of the adjustable counterweight component and the lever arm length L2 of the adjustable counterweight component. n = L1 / L2, where L1 is the lever arm length of the test product on the adjustable leveling structure component; L2 is the lever arm length of the adjustable counterweight component on the adjustable leveling structure component; Step 2: Assemble the ground microgravity deployment test simulation device and adjust the length of the adjustable anti-creep rope assembly to make the leveling structure assembly reach a horizontal state; Step 3: Power on the magnetic levitation despinning structure component to separate the magnetic levitation rotor component from the magnetic levitation buoyancy shield component; Step 4: Release the locking mechanism and allow it to unfold under its own driving force. Test the speed of the structure's unfolding process and test the accuracy of the unfolding into place after the structure stabilizes.

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