CN117048861A - Simulation device applied to ground microgravity unfolding test - Google Patents
Simulation device applied to ground microgravity unfolding test Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G7/00—Simulating cosmonautic conditions, e.g. for conditioning crews
Abstract
A simulation device applied to a ground microgravity unfolding test mainly comprises a leveling-adjustable structure component, an adjustable creep-resistant rope component, a magnetic suspension racemization structure component, an adjustable counterweight component and a safety protection rope lock, and can greatly reduce the resistance of the device in the running process and improve the redundancy safety and reliability of the whole device in the application process in the microgravity unfolding test. The invention has the advantages of simple structure, small rotation resistance, high suspension compensation precision, high universality, high design flexibility, high redundancy safety protection performance, good expandability and other good comprehensive performances, and can be popularized to the expansion test tasks of large-scale space expandable structures such as space expandable antennas, flexible expandable cabin bodies and the like.
Description
Technical Field
The invention relates to a simulation device applied to a ground microgravity unfolding test, and belongs to the technical field of space microgravity unfolding.
Background
With the development of the space expandable structure, the large space expandable structure is more and more widely applied to various aerospace fields, such as the construction of novel technical satellites and space stations, and the corresponding technical requirements of ground microgravity simulation expansion test are more urgent. A great deal of research is carried out on the ground microgravity simulation unfolding test method by research institutions at home and abroad, and various ground microgravity simulation unfolding test technical methods are provided, so that the verification requirements of various industries are met by simulating the space weightlessness environment.
The development of a space unfolding structure is also continuously promoted by the improvement and innovation of the ground microgravity simulation unfolding test technology. The two-dimensional folding mechanism is a test product for supporting light loads of satellites of a novel technology, and is in an in-orbit microgravity environment which is quite different from the gravity environment of the earth surface. How to successfully unfold the test product in the folded state is a key technology for test verification in an on-orbit microgravity environment of ground simulation.
In order to improve the high quality of successful unfolding of the two-dimensional folding mechanism in the ground simulation in-orbit microgravity environment, folding and unfolding can be realized through a microgravity semi-physical simulation system adopting a mechanical arm as a physical main body, such as a space mechanical arm air floatation supporting device CN105345841A inventor: fan Qinglin, liu Shuyuan, and the like, which judge whether the mechanical arm reliably falls the gravity center on the air bearing support device through the sensing of the pressure of the upper plate and the lower plate by the force sensor, simulate the microgravity environment test of the space mechanical arm, and can realize the horizontal support and rolling function of the arm rod of the mechanical arm. Although the scheme can improve the reliability and the safety of test products, the requirement on the control precision of the unfolding process of the two-dimensional folding mechanism is higher, and the operation is more complicated and the cost is higher.
The two-dimensional folding mechanism is unfolded in a mode of combining magnetic suspension driving and suspension compensation, such as a suspension gravity compensation device based on magnetic suspension follow-up CN208198861U inventor: xusong, wang Yanan, etc., the method has the advantages of simple structure, high gravity compensation precision, strong universality, good expandability, etc., but has certain limitation on the size requirement of the two-dimensional folding mechanism, complex operation and high cost.
Disclosure of Invention
The technical solution of the invention is as follows: the simulation device for the ground microgravity unfolding test is provided for the folding unfolding process of the two-dimensional folding mechanism in the on-orbit complex environment, the high-precision measurement of the two-dimensional folding mechanism to the azimuth angle/size can be realized through the high-precision measurement of the simulation device, and the measurement precision can be improved by n times (n is the arm length ratio).
The technical scheme of the invention is as follows:
a simulation device applied to a ground microgravity unfolding test, comprising: the device comprises an adjustable leveling structure assembly, an adjustable creep-resistant rope assembly, a magnetic suspension racemization structure assembly, an adjustable counterweight assembly, a safety protection rope lock and a test product;
the leveling structure component structurally provides butt joint interfaces for the adjustable creep-resistant rope component, the adjustable counterweight component, the safety protection rope and the test product, and is of a symmetrical structure, one end of the leveling structure component is connected with the adjustable counterweight component, and the other end of the leveling structure component is connected with the test product; the quality of the adjustable recombinant component changes along with the quality of the tested product, and the balance requirement of the left end and the right end of the leveling structure component is met; the magnetic suspension racemization structure component is connected with two ends of the adjustable leveling structure component through two adjustable creep-resistant rope components respectively, and the integral balance is realized through fine adjustment of the adjustable creep-resistant rope components; the two ends of the leveling structure component are also connected to the magnetic suspension racemization structure component through safety protection rope locks respectively for safety protection.
Further, the adjustable level structure component comprises an arm length platform structure, a level fine adjustment device, a hanging device and a product connecting device;
the horizontal fine tuning device is arranged on the upper surface of the arm length platform structure, the hanging device is fixed at two ends of the upper surface of the arm length platform structure, and the product connecting device is fixedly connected with the arm length platform structure through a mounting through hole arranged on the arm length platform structure.
Further, the horizontal fine adjustment device, the hanging device and the product connecting device are symmetrically distributed, and the product connecting device is positioned at the inner side of the hanging device; the two product connecting devices are respectively connected with the adjustable counterweight component and the test product; the two hanging devices are connected with the adjustable creep-resistant rope assembly and the safety protection rope lock.
Further, the arm length ratio of the leveled structure assembly n=l 1 /L 2 Wherein L is 1 The length of a moment arm of the reference product on the adjustable level structure component; l (L) 2 The length of a moment arm of the adjustable counterweight assembly on the adjustable leveling structure assembly.
Further, the adjustable creep-resistant rope assembly comprises a creep-resistant rope, a fine adjustment moving device and a fine adjustment telescoping device;
the creep-resistant rope is fixedly arranged at one end of the fine adjustment moving device, and the other end of the fine adjustment moving device is connected with the fine adjustment telescoping device;
the length of the creep-resistant rope is controlled through the fine adjustment moving device and the fine adjustment telescopic device.
Further, the magnetic suspension racemization structure assembly comprises a magnetic suspension buoyancy cover assembly and a magnetic suspension rotor assembly;
the magnetic suspension buoyancy cover component comprises a magnetic suspension buoyancy cover structure, two side hoisting structures, a lower hoisting structure and an upper hoisting structure; the two-side hoisting structures are arranged on two sides of the magnetic levitation buoyancy cover structure, and an upper hoisting structure and a lower hoisting structure are respectively arranged above and below the magnetic levitation buoyancy cover structure;
the magnetic suspension rotor assembly comprises a magnetic suspension rotor and an infrared range finder;
the magnetic suspension rotor assembly is arranged in the magnetic suspension buoyancy cover assembly, and one end of the creep-resistant rope is connected with the lower hoisting device; the upper hoisting device is used for being connected with external mechanical equipment.
Further, the adjustable recombinant structure comprises a component cavity and an adjustable recombinant unit; the structure of the adjustable recombinant is configured according to the actual quality of the tested product; the assembly cavity is connected with the product connecting device; the test product is connected with the product connecting device;
the structural weight of the adjustable recombinant component is m 2 ＝m 1 N, where m 1 Is the actual quality of the reference product; m is m 2 To adjust the actual mass of the recombinant structure.
Further, the hanging device and the hanging structures on two sides are respectively connected to two ends of the safety protection rope lock, and the two safety protection rope locks are symmetrically distributed.
Further, the simulation device is lifted through the lifting device connected with the mechanical equipment, the lifting height is accurately measured by the infrared range finder, meanwhile, the leveling is carried out through the fine adjustment moving device and the fine adjustment telescopic device, and the horizontal state confirmation is completed through the horizontal fine adjustment device.
Further, when an external power supply is connected, the inner space of the magnetic suspension structure component generates strong magnetic field force to realize mutual separation between the magnetic suspension rotor component and the magnetic suspension buoyancy cover component, the magnetic suspension rotor component is stably suspended under the action of the magnetic field force and is not affected by any friction force in the movement process, and when the external force acts, the magnetic suspension buoyancy cover component follows the external unfolding structure to realize 360-degree friction-free rotation.
Furthermore, the invention also provides a method for testing the arm length ratio control gravity elimination and high-precision deformation, which comprises the following steps:
step one: measuring the weight m of the unfolding mechanism 1 And a swing arm length L of the unfolding mechanism 1 According to the expansion precision amplification requirement and the arm length ratio n, calculating the weight m of the adjustable counterweight assembly 2 And adjustable recombinant force arm length L 2 ；
n＝L 1 /L 2 Wherein L is 1 The length of a moment arm of the reference product on the adjustable level structure component; l (L) 2 The length of a force arm of the adjustable counterweight assembly on the adjustable leveling structure assembly is as follows;
step two: assembling a ground microgravity unfolding test simulation device, and adjusting the length of the adjustable creep-resistant rope assembly to enable the leveling structure assembly to reach a horizontal state;
step three: electrifying the magnetic suspension racemization structure assembly to separate the magnetic suspension rotor assembly from the magnetic suspension buoyancy cover assembly;
step four: releasing the locking of the unfolding mechanism, unfolding the unfolding mechanism under the self driving force, testing the speed of the unfolding process of the structure, and testing the unfolding in-place precision after the structure is stable.
Compared with the prior art, the invention has the beneficial effects that:
(1) Aiming at the problems of low precision and high realization cost of the microgravity unfolding measurement of the ground simulation on-orbit environment of the two-dimensional folding mechanism, the invention designs the simulation device for the high-precision measurement of the microgravity unfolding test of the two-dimensional folding mechanism, so that the ground simulation on-orbit microgravity unfolding of the two-dimensional folding mechanism is more convenient and practical in operation, more universal and flexible in device design, less in space limitation of products, good in unfolding reliability and stability, high in measurement precision and lower in test cost.
(2) The microgravity simulation device mainly comprises a magnetic suspension racemization structure component and a suspension fine adjustment measuring device, the device is mainly combined with a lever principle to unload gravity in the unfolding process of the two-dimensional folding mechanism, the follow-up structure is enabled to perform rotary motion through the magnetic suspension racemization structure component, and the magnetic suspension racemization structure component can flexibly rotate.
(3) The invention improves the precision of the suspension fine adjustment measuring device by combining the adjustable leveling structure component with the adjustable creep-resistant rope component redundant design. Safety during operation of the device is improved through the application of the safety protection rope.
Drawings
FIG. 1 is a schematic diagram of the microgravity unfolding test and high-precision measurement microgravity simulation device of a two-dimensional folding mechanism;
FIG. 2 is a schematic diagram of a leveleable structural assembly;
FIG. 3 is a schematic illustration of an adjustable creep-resistant rope assembly;
FIG. 4 is a schematic diagram of components of a magnetic levitation racemization structure;
FIG. 5 is a schematic diagram of a structure of an adjustable recombinant;
FIG. 6 is a schematic diagram showing the overall state of the connection between the microgravity simulation device and the reference product.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the accompanying drawings.
By analyzing the characteristics of the two-dimensional folding mechanism, the invention designs the simulation device for measuring the microgravity unfolding test of the two-dimensional folding mechanism with high precision, and the device has the characteristics of small two-dimensional follow-up resistance and high gravity unloading efficiency, thereby greatly improving the reliability and stability of the two-dimensional folding mechanism for simulating the folding unfolding under the in-orbit microgravity environment. The method realizes the efficient elimination of the weight and the high-precision measurement of the in-place size in the ground test process of the space two-dimensional folding mechanism.
The invention relates to a simulation device for high-precision measurement of a microgravity unfolding test of a two-dimensional folding mechanism, which adopts a magnetic suspension racemization structure component and a suspension fine adjustment measurement method, improves the high reliability and measurement precision of the ground simulation microgravity test of the two-dimensional folding mechanism, reduces the complexity of the whole device, and is specifically embodied as follows:
1. the magnetic suspension racemization structure component is adopted to replace the application of a common rotary joint, so that the resistance of the whole device in the running process is greatly reduced;
2. the suspension fine adjustment measurement is adopted to replace the counterweight of the traditional suspension wire system, so that the high coordination of the whole device for accurate leveling in the application process is improved, and meanwhile, the structure design of the arm length platform is more universal and flexible;
3. the adoption of the safety protection rope lock improves the redundancy safety and reliability of the whole device in the application process.
4. Compared with the air floatation and liquid floatation methods, the device has lower cost investment and higher feasibility.
5. The design method of the device can be expanded and adjusted according to the size and the weight of the test product, and can be suitable for two-dimensional microgravity expansion tests of 50 g-500 kg-level products.
As shown in fig. 1, the simulation device for ground microgravity unfolding test provided by the invention comprises: the device comprises an adjustable leveling structure assembly 1, an adjustable creep-resistant rope assembly 2, a magnetic suspension racemization structure assembly 3, an adjustable recombined part 4, a safety protection rope lock 5 and a reference product 6;
the leveling structure assembly 1 structurally provides butt joint interfaces for the adjustable creep-resistant rope assembly 2, the adjustable recombined member 4, the safety protection rope 5 and the reference product 6, the leveling structure assembly 1 is of a symmetrical structure, one end of the leveling structure assembly is connected with the adjustable recombined member 4, and the other end of the leveling structure assembly is connected with the reference product 6; the quality of the adjustable recombinant 4 is changed along with the quality of the tested product 6, so that the balance requirement of the left and right ends of the leveling structure assembly 1 is met; the magnetic suspension racemization structure assembly 3 is respectively connected with two ends of the adjustable leveling structure assembly 1 through two adjustable creep-resistant rope assemblies 2, and the integral balance is realized through fine adjustment of the adjustable creep-resistant rope assemblies 2; the two ends of the leveling structure component 1 are also respectively connected to the magnetic suspension racemization structure component 3 through a safety protection rope lock 5 for safety protection.
As shown in fig. 2, the adjustable leveling structure assembly 1 includes an arm length platform structure 101, a horizontal fine adjustment device 102, a hanging device 103 and a product connecting device 104;
the horizontal fine adjustment device 102 is installed on the upper surface of the arm length platform structure 101, the hanging device 103 is fixed at two ends of the upper surface of the arm length platform structure 101, and the product connecting device 104 is fixedly connected with the arm length platform structure 101 through an installation through hole arranged on the arm length platform structure 101.
The horizontal fine adjustment device 102, the hanging device 103 and the product connecting device 104 are symmetrically distributed, and the product connecting device 104 is positioned at the inner side of the hanging device 103; two product connection devices 104 are respectively connected with the adjustable recombination member 4 and the reference product 6; both hanging devices 103 are connected with the adjustable creep-resistant rope assembly 2 and the safety protection rope lock 5.
The arm length ratio of the leveling structure assembly 1 is as follows:
n＝L 1 /L 2
wherein L is 1 The length of a moment arm of the reference product on the adjustable level structure component; l (L) 2 The length of a moment arm of the adjustable counterweight assembly on the adjustable leveling structure assembly.
As shown in fig. 3, the adjustable creep-resistant rope assembly 2 includes a creep-resistant rope 201, a fine movement device 202, and a fine telescoping device 203;
the creep-resistant rope 201 is fixedly arranged at one end of the fine adjustment moving device 202, and the other end of the fine adjustment moving device 202 is connected with the fine adjustment telescoping device 203;
the length of the creep-resistant rope 201 is controlled by the fine movement device 202 and the fine expansion device 203.
As shown in fig. 4, the magnetic suspension racemization structure assembly 3 comprises a magnetic suspension buoyancy cover assembly 301 and a magnetic suspension rotor assembly 302;
the magnetic levitation buoyancy cover assembly 301 comprises a magnetic levitation buoyancy cover structure 3011, two side lifting structures 3012, a lower lifting structure 3013 and an upper lifting structure 3014; the hoisting structures 3012 on two sides are arranged on two sides of the magnetic levitation buoyancy cover structure 3011, and an upper hoisting structure 3014 and a lower hoisting structure 3013 are respectively arranged above and below the magnetic levitation buoyancy cover structure 3011;
magnetic levitation rotor assembly 302 includes a magnetic levitation rotor 3021 and an infrared rangefinder 3022;
the magnetic suspension rotor assembly 302 is arranged in the magnetic suspension buoyancy cover assembly 301, and one end of the creep-resistant rope 201 is connected with the lower hoisting device 3013; the upper lifting device 3014 is used for connecting with external mechanical equipment.
As shown in fig. 5, the tunable recombinant structure 4 includes a component cavity 401 and a tunable recombinant unit 402; the adjustable recombinant structure 4 is configured according to the actual quality of the reference product 6; the assembly cavity 401 is connected with the product connecting device 104; the reference product 6 is connected with the product connecting device 104;
the weight of the adjustable recombinant structure 4 is as follows:
m 2 ＝m 1 /n
wherein m is 1 Is the actual quality of the reference product; m is m 2 To adjust the actual mass of the recombinant structure.
Two ends of the safety protection rope locks 5 are respectively connected with the hanging device 103 and the hanging structures 3012 on two sides, and the two safety protection rope locks 5 are symmetrically distributed.
The simulation device is lifted by the lifting device 3014 connected by mechanical equipment, the lifting height is accurately measured by the infrared range finder 3022, meanwhile, the leveling is performed by the fine adjustment moving device 202 and the fine adjustment telescopic device 203, and the horizontal state confirmation is completed by the horizontal fine adjustment device 102.
When an external power supply is connected, the internal space of the magnetic suspension structure assembly 3 generates strong magnetic field force to realize mutual separation between the magnetic suspension rotor assembly 302 and the magnetic suspension buoyancy cover assembly 301, the magnetic suspension rotor assembly 302 is stably suspended under the action of the magnetic field force and is not affected by any friction force in the movement process, and when the external force acts, the magnetic suspension buoyancy cover assembly follows an external unfolding structure to realize 360-degree friction-free rotation.
The invention also provides a method for testing the arm length ratio control gravity elimination and high-precision deformation, which comprises the following steps:
step one: measuring the weight m of the unfolding mechanism 1 And a swing arm length L of the unfolding mechanism 1 According to the expansion precision amplification requirement and the arm length ratio n, calculating the weight m of the adjustable counterweight assembly 2 And adjustable recombinant force arm length L 2 ；
n＝L 1 /L 2 Wherein L is 1 The length of a moment arm of the reference product on the adjustable level structure component; l (L) 2 The length of a force arm of the adjustable counterweight assembly on the adjustable leveling structure assembly is as follows;
step two: assembling a ground microgravity unfolding test simulation device, and adjusting the length of the adjustable creep-resistant rope assembly to enable the leveling structure assembly to reach a horizontal state;
step three: electrifying the magnetic suspension racemization structure assembly to separate the magnetic suspension rotor assembly from the magnetic suspension buoyancy cover assembly;
step four: releasing the locking of the unfolding mechanism, unfolding the unfolding mechanism under the self driving force, testing the speed of the unfolding process of the structure, and testing the unfolding in-place precision after the structure is stable.
FIG. 6 is a schematic diagram showing the overall connection state of the microgravity simulation device and the reference product, wherein FIG. 11 is a microgravity unfolding test and high-precision measurement microgravity simulation device for the two-dimensional folding mechanism provided by the invention; 12 is an external hoisting device; and 13 is a two-dimensional folding and unfolding mechanism.
Examples:
the invention mainly comprises a magnetic suspension racemization structure component and a suspension fine adjustment measuring device, wherein the whole structure is a symmetrical structure; the magnetic levitation racemization structure assembly comprises a magnetic levitation buoyancy cover assembly 301 and a magnetic levitation rotor assembly 302, wherein a magnetic levitation module is arranged in the magnetic levitation buoyancy cover, the magnetic levitation rotor assembly is arranged in the magnetic levitation buoyancy cover, a magnetic levitation technology in a magnetic levitation train is utilized, a normally-conductive adsorption type levitation principle is adopted, the magnetic levitation buoyancy cover is connected with a power supply, a strong magnetic field force is generated in an inner space, the magnetic levitation rotor assembly can stably suspend under the action of the magnetic field force and rotate according to the track of the inner structure of the magnetic levitation buoyancy cover, and the magnetic levitation buoyancy cover assembly can rotate 360 degrees when external force acts, so that racemization function is achieved.
The magnetic suspension buoyancy cover component consists of a magnetic suspension buoyancy cover structure, two side hoisting structures, a lower hoisting structure and an upper hoisting structure, wherein the magnetic suspension buoyancy cover structure can provide a hoisting interface with a linking function and is a main bearing structure.
The magnetic suspension rotor assembly consists of a magnetic suspension rotor and an infrared distance measuring device, wherein the infrared distance measuring device can measure the ground distance and transmit the ground distance to ground observers through wireless transmission. After the magnetic suspension rotor structure body is electrified, strong magnetic suspension force can be generated, and the magnetic suspension buoyancy cover is jacked up to realize friction-free rotation.
The suspension fine adjustment measuring device comprises an adjustable leveling structure component, an adjustable creep-resistant rope component, an adjustable counterweight component and a safety protection rope lock. The adjustable leveling structure component consists of an arm length platform structure, a horizontal fine adjustment device, a hanging device and a product connecting device, wherein the arm length ratio of the adjustable leveling structure component is n=L 1 /L 2 Weight of the adjustable counterweight component is m 2 ＝m 1 And n, the in-place precision of the reference product can be amplified by n times, and the in-place dimension measurement precision of the two-dimensional folding mechanism is greatly improved.
The arm length platform structure is designed according to the torque balance principle according to the quality of the product under test and the adjustability of the counterweight, and the horizontal fine adjustment device is structurally arranged on the arm length platform structure, so that the function of keeping balance between the product under test and the counterweight can be met. The hanging device is used for providing a connecting interface for connecting the adjustable creep-resistant rope assembly, the magnetic suspension racemization structure assembly and the safety protection rope lock. The product connecting device realizes the connection interface of the adjustable counterweight component and the test product.
The adjustable counterweight component consists of a component cavity and adjustable counterweight units, wherein the component cavity is a metal tank body, the adjustable counterweight units are composed of metal particles/shots with the weight of 0.1 g-100 g, and the type and the number of the counterweight units are adjusted according to the requirements of the structural counterweight process, so that the maximum counterweight precision is up to 0.1g.
The adjustable creep-resistant rope component comprises a creep-resistant rope, a fine adjustment moving device and a fine adjustment telescoping device, wherein the adjustable creep-resistant rope is made of high-strength special spinning fibers such as aramid fibers, polyimide and PBO fibers, the component is a key component for connecting a magnetic suspension buoyancy cover structure and an arm length platform structure, and the length of the creep-resistant rope and the arm length platform structure can be controlled by the fine adjustment moving device and the fine adjustment telescoping device to be mutually matched to achieve redundant fine adjustment.
The safety protection rope is also made of high-strength special spinning fibers such as aramid fibers, polyimide fibers, PBO fibers and the like. The application of the rope greatly improves the hanging safety of the whole device. The device can be widely popularized and used for unfolding verification tests of two-dimensional folding mechanisms.
The invention can realize simulated on-orbit two-dimensional folding unfolding of the microgravity unfolding product. Based on the space mechanism follow-up and lever micro-deformation amplification principle, the in-place dimension high-precision measurement of the two-dimensional folding mechanism is realized. Meanwhile, the magnetic suspension racemization structure can eliminate gravity, has small rotation resistance, ensures that the quality of a tested product is completely counteracted, can be reliably unfolded according to the follow-up of the structural performance of the product, and meets the general and flexible design requirements of a microgravity unfolding test and a high-precision measuring device of a two-dimensional folding mechanism. The invention provides the creep-resistant rope based on Gao Jiangte spun fiber rope, which greatly improves the length control precision of the rope in the test process and reduces the test measurement error.
The invention is not described in detail in the field of technical personnel common knowledge.
Claims (11)
1. The simulation device applied to the ground microgravity unfolding test is characterized by comprising: the device comprises an adjustable leveling structure assembly (1), an adjustable creep-resistant rope assembly (2), a magnetic suspension racemization structure assembly (3), an adjustable counterweight assembly (4), a safety protection rope lock (5) and a reference product (6);
the leveling structure assembly (1) structurally provides butt joint interfaces for the adjustable creep-resistant rope assembly (2), the adjustable counterweight assembly (4), the safety protection rope (5) and the reference product (6), the leveling structure assembly (1) is of a symmetrical structure, one end of the leveling structure assembly is connected with the adjustable counterweight assembly (4), and the other end of the leveling structure assembly is connected with the reference product (6); the quality of the adjustable counterweight component (4) changes along with the quality of the tested product (6), so as to meet the balance requirements of the left end and the right end of the leveling structure component (1); the magnetic suspension racemization structure assembly (3) is connected with two ends of the adjustable leveling structure assembly (1) through two adjustable creep-resistant rope assemblies (2) respectively, and integral balance is realized through fine adjustment of the adjustable creep-resistant rope assemblies (2); the two ends of the leveling structure component (1) are also connected to the magnetic suspension racemization structure component (3) through safety protection rope locks (5) respectively for safety protection.
2. The simulation device applied to the ground microgravity unfolding test according to claim 1, wherein: the adjustable level structure assembly (1) comprises an arm length platform structure (101), a level fine adjustment device (102), a hanging device (103) and a product connecting device (104);
the horizontal fine adjustment device (102) is arranged on the upper surface of the arm length platform structure (101), the hanging device (103) is fixed at two ends of the upper surface of the arm length platform structure (101), and the product connecting device (104) is fixedly connected with the arm length platform structure (101) through an installation through hole arranged on the arm length platform structure (101).
3. The simulation device applied to the ground microgravity unfolding test according to claim 2, wherein: the horizontal fine adjustment device (102), the hanging device (103) and the product connecting device (104) are symmetrically distributed, and the product connecting device (104) is positioned at the inner side of the hanging device (103); the two product connecting devices (104) are respectively connected with the adjustable counterweight component (4) and the reference product (6); the two hanging devices (103) are connected with the adjustable creep-resistant rope assembly (2) and the safety protection rope lock (5).
4. The simulation device applied to the ground microgravity unfolding test according to claim 2, wherein: adjustable level structural assembly (1) arm length ratio n=l 1 /L 2 Wherein L is 1 The length of a moment arm of the reference product on the adjustable level structure component; l (L) 2 The length of a moment arm of the adjustable counterweight assembly on the adjustable leveling structure assembly.
5. The simulation device applied to the ground microgravity unfolding test according to claim 4, wherein: the adjustable creep-resistant rope assembly (2) comprises a creep-resistant rope (201), a fine adjustment moving device (202) and a fine adjustment telescoping device (203);
the creep-resistant rope (201) is fixedly arranged at one end of the fine adjustment moving device (202), and the other end of the fine adjustment moving device (202) is connected with the fine adjustment telescoping device (203);
the length of the creep-resistant rope (201) is controlled by a fine adjustment moving device (202) and a fine adjustment telescopic device (203).
6. The simulation device applied to the ground microgravity unfolding test according to claim 5, wherein: the magnetic suspension racemization structure assembly (3) comprises a magnetic suspension buoyancy cover assembly (301) and a magnetic suspension rotor assembly (302);
the magnetic suspension buoyancy cover assembly (301) comprises a magnetic suspension buoyancy cover structure (3011), two side hoisting structures (3012), a lower hoisting structure (3013) and an upper hoisting structure (3014); the two sides hoisting structures (3012) are arranged at two sides of the magnetic suspension buoyancy cover structure (3011), and an upper hoisting structure (3014) and a lower hoisting structure (3013) are respectively arranged above and below the magnetic suspension buoyancy cover structure (3011);
the magnetic suspension rotor assembly (302) comprises a magnetic suspension rotor (3021) and an infrared range finder (3022);
the magnetic suspension rotor assembly (302) is arranged in the magnetic suspension buoyancy cover assembly (301), and one end of the creep-resistant rope (201) is connected with the lower hoisting device (3013); the upper hoisting device (3014) is used for being connected with external mechanical equipment.
7. The simulation device applied to the ground microgravity unfolding test according to claim 6, wherein: the adjustable recombinant structure (4) comprises a component cavity (401) and an adjustable recombinant unit (402); the adjustable recombinant structure (4) is configured according to the actual quality of the reference product (6); the assembly cavity (401) is connected with the product connecting device (104); the reference product (6) is connected with the product connecting device (104);
the weight of the adjustable recombinant component structure (4) is m 2 ＝m 1 N, where m 1 Is the actual quality of the reference product; m is m 2 To adjust weightThe actual mass of the component structure.
8. The simulation device applied to the ground microgravity unfolding test according to claim 6, wherein: two ends of the safety protection rope lock (5) are respectively connected with the hanging device (103) and the hanging structures (3012) at two sides, and the two safety protection rope locks (5) are symmetrically distributed.
9. The simulation device applied to the ground microgravity unfolding test according to claim 6, wherein: lifting device (3014) is connected through mechanical equipment to lift the simulation device, the lifting height is accurately measured by using an infrared range finder (3022), leveling is performed through a fine adjustment moving device (202) and a fine adjustment telescopic device (203), and horizontal state confirmation is completed through a horizontal fine adjustment device (102).
10. The simulation device applied to the ground microgravity unfolding test according to claim 6, wherein: when an external power supply is connected, the internal space of the magnetic suspension structure component (3) generates strong magnetic field force, so that the magnetic suspension rotor component (302) and the magnetic suspension buoyancy cover component (301) are mutually separated, the magnetic suspension rotor component (302) is stably suspended under the action of the magnetic field force and is not affected by any friction force in the movement process, and when the external force acts, the magnetic suspension buoyancy cover component follows an external unfolding structure to realize 360-degree friction-free rotation.
11. An arm length ratio control gravity eliminating and high-precision deformation testing method based on the simulation device of claim 1, which is characterized by comprising the following steps:
step one: measuring the weight m of the unfolding mechanism 1 And a swing arm length L of the unfolding mechanism 1 According to the expansion precision amplification requirement and the arm length ratio n, calculating the weight m of the adjustable counterweight assembly 2 And adjustable recombinant force arm length L 2 ；
n＝L 1 /L 2 Wherein L is 1 The length of a moment arm of the reference product on the adjustable level structure component; l (L) 2 The length of a force arm of the adjustable counterweight assembly on the adjustable leveling structure assembly is as follows;
step two: assembling a ground microgravity unfolding test simulation device, and adjusting the length of the adjustable creep-resistant rope assembly to enable the leveling structure assembly to reach a horizontal state;
step three: electrifying the magnetic suspension racemization structure assembly to separate the magnetic suspension rotor assembly from the magnetic suspension buoyancy cover assembly;
step four: releasing the locking of the unfolding mechanism, unfolding the unfolding mechanism under the self driving force, testing the speed of the unfolding process of the structure, and testing the unfolding in-place precision after the structure is stable.
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