阅读说明：本技术 基于多空间机器人系统的超大型太空望远镜在轨维护方法 (On-orbit maintenance method of ultra-large space telescope based on multi-space robot system ) 是由 赵京东 杨晓航 杨国财 赵云鹏 赵智远 赵亮亮 蒋再男 谢宗武 刘宏 于 2021-08-11 设计创作，主要内容包括：基于多空间机器人系统的超大型太空望远镜在轨维护方法,属于航天器在轨服务技术领域。本发明为了解决超大型太空望远镜在轨维护成本高、难度大的问题。本发明所述方法首先将超大型太空望远镜拆分为：主镜部、次镜部和挡光部,通过故障检测与分析明确故障发生位置,针对四种情况分别提出利用可伸缩空间机械臂与可再生多分支超冗余空间机器人组成的新型多空间机器人系统进行在轨维护的方案。该技术可以突破大型空间设备在轨维修难题,提升我国空间资产的使用寿命,降低空间设备运营成本。(An on-orbit maintenance method of an ultra-large space telescope based on a multi-space robot system belongs to the technical field of on-orbit service of spacecrafts. The invention aims to solve the problems of high on-orbit maintenance cost and great difficulty of the ultra-large space telescope. The method of the invention firstly splits the ultra-large space telescope into: the main mirror part, the secondary mirror part and the light blocking part are used for determining the fault occurrence position through fault detection and analysis, and a scheme for performing on-orbit maintenance by using a novel multi-space robot system consisting of a telescopic space mechanical arm and a reproducible multi-branch super-redundant space robot is provided for four conditions. The technology can break through the problem of on-orbit maintenance of large space equipment, prolong the service life of space assets in China and reduce the operation cost of the space equipment.)

1. An on-orbit maintenance method of an ultra-large space telescope based on a multi-space robot system is characterized by comprising the following steps: if a fault occurs in the light barrier, the method is implemented by the following steps:

s1, defining a fault light shield (11) in six light shields (11) of a light blocking part;

s2, judging whether the light shield (11) with the fault is in a smart working space of the telescopic space manipulator (4), if the position of the light shield (11) is not beneficial to the operation of the telescopic space manipulator (4), driving the light shield (11) to rotate to a proper position by a rotatable part of the rotatable spacecraft platform (2);

s3, unlocking the telescopic space mechanical arm (4), and unlocking the freight cabin (1) provided with the spare light shield (11);

s4, the telescopic space mechanical arm (4) moves to a position near the fault light shield (11) and is connected with the light shield (11) through an adapter on the light shield (11);

s5, unlocking a locking mechanism between the light shield (11) and the light shield mounting base (12), and disassembling the fault light shield (11) by using the telescopic space mechanical arm (4);

s6, the telescopic space mechanical arm (4) conveys the spare light shield (11) in the freight cabin (1) to the position near an assembly point for assembly.

2. The on-orbit maintenance method of the ultra-large space telescope based on the multi-space robot system as claimed in claim 1, characterized in that: the light shield (11) is connected with the light shield mounting base (12) through a first standardized interface.

3. An on-orbit maintenance method of an ultra-large space telescope based on a multi-space robot system is characterized by comprising the following steps: if a fault occurs in a secondary mirror module (10) of the secondary mirror section, the method is implemented by:

s1, unlocking a telescopic space mechanical arm (4), unlocking a reproducible multi-branch super-redundant space robot (7), and unlocking a freight transport bin (1) provided with a standby secondary mirror module;

s2, disassembling a light shield (11) at the secondary mirror support (9) by using the telescopic space mechanical arm (4);

s3, climbing the reproducible multi-branch super-redundant space robot (7) to a secondary mirror bracket (9) along an adapter on the outer wall of the cabin;

s4, taking out the standby secondary mirror module (10) in the freight transport bin (1) by using the telescopic space manipulator (4) and carrying the standby secondary mirror module to the working space of the reproducible multi-branch super-redundant space robot (7), wherein the reproducible multi-branch super-redundant space robot (7) uses the working arm to grab the standby secondary mirror module (10);

s5, the reproducible multi-branch super-redundant space robot (7) crawls to the installation position of a secondary mirror module (10) along a secondary mirror bracket (9);

s6, unlocking a locking device between the secondary mirror module (10) and the mounting mechanism, and disassembling the fault secondary mirror module (10) by utilizing a working arm of the reproducible multi-branch super-redundant space robot (7);

s7, assembling the standby secondary mirror module (10) by utilizing a working arm of the reproducible multi-branch super-redundant space robot (7);

and S8, installing a light shield (11) at the secondary mirror support (9) by using the telescopic space mechanical arm (4).

4. The on-orbit maintenance method of the ultra-large space telescope based on the multi-space robot system as claimed in claim 3, characterized in that: the secondary mirror module (10) and the secondary mirror bracket (9) are connected with each other through a standardized interface.

5. An on-orbit maintenance method of an ultra-large space telescope based on a multi-space robot system is characterized by comprising the following steps: if a fault occurs in the secondary mirror holder (9) of the secondary mirror section, the method is implemented by the following steps:

s1, judging whether a secondary mirror support (9) with a fault is in a flexible working space of a telescopic space mechanical arm (4), if the secondary mirror support (9) is located at a position which is not beneficial to mechanical arm operation, driving the secondary mirror support (9) to rotate to a proper position by a rotatable part of a rotatable spacecraft platform (2);

s2, unlocking a telescopic space mechanical arm (4), unlocking a reproducible multi-branch super-redundant space robot (7), and unlocking a freight cabin (1) provided with a standby secondary mirror bracket (9);

s3, disassembling a light shield (11) at the secondary mirror support (9) by using the telescopic space mechanical arm (4);

s4, crawling to the mounting position of the secondary mirror module (10) by using the reproducible multi-branch super-redundant space robot (7) along the outer wall of the cabin body and the secondary mirror bracket (9), and detaching the secondary mirror module (10);

s5, disassembling the fault secondary mirror support (9) by using the telescopic space mechanical arm (4);

s6, taking out the spare secondary mirror bracket (9) in the freight cabin (1) by using the telescopic space mechanical arm (4), and carrying the spare secondary mirror bracket to a mounting position for assembly;

s7, crawling to the mounting position of the secondary mirror module (10) along the secondary mirror support (9) by using the reproducible multi-branch super-redundant space robot (7), and mounting the secondary mirror module (10);

and S8, installing a light shield (11) at the secondary mirror support (9) by using the telescopic space mechanical arm (4).

6. An on-orbit maintenance method of an ultra-large space telescope based on a multi-space robot system is characterized by comprising the following steps: the method is characterized in that: if a fault occurs in the primary mirror portion, the method is realized by the following steps:

s1, unlocking a telescopic space mechanical arm (4), unlocking a reproducible multi-branch super-redundant space robot (7), and unlocking a freight cabin (1) provided with a standby modular sub-mirror (8);

s2, disassembling the light shield (11) by using the telescopic space manipulator (4);

s3, climbing a reproducible multi-branch super-redundant space robot (7) to a main mirror part along an adapter (6) on the outer wall of the cabin body;

s4, taking out the spare modular sub-mirror (8) in the freight transport bin (1) by using the telescopic space mechanical arm (4) and carrying the spare modular sub-mirror to a working space of the reproducible multi-branch super-redundant space robot (7), wherein the reproducible multi-branch super-redundant space robot (7) uses the working arm to grab the spare modular sub-mirror;

s5, the reproducible multi-branch super-redundant space robot (7) crawls to a fault modularized secondary mirror (8) along the mirror surface of the primary mirror;

s6, unlocking a standardized interface three-locking device of the modular sub-mirror (8), and disassembling the fault modular sub-mirror (8) by using a working arm of the reproducible multi-branch super-redundant space robot (7);

s7, assembling the standby modular sub-mirror (8) by utilizing a working arm of the reproducible multi-branch super-redundant space robot (7);

s8, the light shield (11) is installed by using the telescopic space manipulator (4).

Technical Field

The invention belongs to the technical field of on-orbit service of spacecrafts, and particularly relates to an on-orbit maintenance method of an ultra-large space telescope based on a multi-space robot system.

Background

In a new military revolution period characterized by informatization, the development of the space robot system on-orbit maintenance technology can greatly improve the space countermeasure and space deterrence capability of China, and has huge potential military benefits. With the continuous maturity of space technology, the construction of large space equipment is scheduled, and the space equipment is maintained on track by using a space robot system, so that the service life of the space equipment is prolonged, the operation cost of the space equipment is reduced, and the military confrontation capability of China is improved. The large space equipment has a complex structure and a large volume, which brings difficulty to the on-orbit maintenance of the space robot. Therefore, in order to solve the problem of on-orbit maintenance of large space equipment, it is necessary to develop an on-orbit maintenance method for a very large space telescope based on a multi-space robot system.

Disclosure of Invention

The invention provides an on-orbit maintenance method of an ultra-large space telescope based on a multi-space robot system, aiming at solving the problems of high on-orbit maintenance cost and high difficulty of the ultra-large space telescope.

The technical scheme adopted by the invention is as follows:

the on-orbit maintenance method of the ultra-large space telescope based on the multi-space robot system is realized by the following steps if a fault occurs in a light blocking part:

s1, defining a fault light shield in six light shields of a light blocking part;

s2, judging whether the faulted light shield is in the smart working space of the telescopic space manipulator or not, and if the position of the light shield is not beneficial to the operation of the telescopic space manipulator, rotating the rotatable part of the rotatable spacecraft platform to drive the light shield to rotate to a proper position;

s3, unlocking a telescopic space mechanical arm, and unlocking a freight cabin provided with a spare light shield;

s4, the telescopic space mechanical arm moves to a position near a fault light shield and is connected with the light shield through an adapter on the light shield;

s5, unlocking a locking mechanism between the light shield and the light shield mounting mechanism, and disassembling the fault light shield by using a telescopic space mechanical arm;

and S6, the telescopic space mechanical arm conveys the standby light shield in the freight transport bin to the position near an assembly point for assembly.

The on-orbit maintenance method of the ultra-large space telescope based on the multi-space robot system is realized by the following steps if a fault occurs in a secondary mirror module of a secondary mirror part:

s1, unlocking a telescopic space mechanical arm, unlocking a reproducible multi-branch super-redundancy space robot, and unlocking a freight cabin provided with a standby secondary mirror module;

s2, disassembling a light shield at the secondary mirror support by using a telescopic space manipulator;

s3, climbing the reproducible multi-branch super-redundant space robot to a secondary mirror bracket along an adapter on the outer wall of the cabin;

s4, taking out the standby secondary mirror module in the freight transport bin by using the telescopic space manipulator and carrying the standby secondary mirror module to the working space of the reproducible multi-branch super-redundant space robot, and grabbing the standby secondary mirror module by using the working arm by the reproducible multi-branch super-redundant space robot;

s5, the reproducible multi-branch super-redundant space robot crawls to the secondary mirror module mounting position along the secondary mirror bracket;

s6, unlocking a locking device between the secondary mirror module and the mounting mechanism, and disassembling the fault secondary mirror module by using a reproducible multi-branch super-redundant space robot working arm;

s7, assembling the standby secondary mirror module by using a reproducible multi-branch super-redundant space robot working arm;

and S8, installing a light shield at the secondary mirror support by using the telescopic space mechanical arm.

The on-orbit maintenance method of the ultra-large space telescope based on the multi-space robot system is realized by the following steps if a fault occurs in a secondary mirror bracket of a secondary mirror part:

s1, judging whether a secondary mirror support with a fault is in a smart working space of a telescopic space mechanical arm or not, and if the position of the secondary mirror support is not beneficial to the operation of the mechanical arm, rotating a rotatable part of a rotatable spacecraft platform to drive the secondary mirror support to rotate to a proper position;

s2, unlocking by a telescopic space mechanical arm, unlocking by a reproducible multi-branch super-redundancy space robot, and unlocking by a freight transport bin provided with a standby secondary mirror support;

s3, disassembling a light shield at the secondary mirror support by using a telescopic space manipulator;

s4, crawling to a secondary mirror module mounting position along the outer wall of the cabin body and a secondary mirror support by using the reproducible multi-branch super-redundant space robot, and detaching the secondary mirror module;

s5, disassembling the fault secondary mirror support by using a telescopic space mechanical arm;

s6, taking out the spare secondary mirror bracket in the freight transport bin by using the telescopic space mechanical arm, and carrying the spare secondary mirror bracket to a mounting position for assembly;

s7, crawling to a secondary mirror module mounting position along a secondary mirror support by using a reproducible multi-branch super-redundant space robot, and mounting the secondary mirror module;

and S8, installing a light shield at the secondary mirror support by using the telescopic space mechanical arm.

The on-orbit maintenance method of the ultra-large space telescope based on the multi-space robot system is characterized by comprising the following steps: if a fault occurs in the primary mirror portion, the method is realized by the following steps:

s1, unlocking a telescopic space mechanical arm, unlocking a reproducible multi-branch super-redundancy space robot, and unlocking a freight cabin provided with a standby modular sub-mirror;

s2, disassembling the shading cover by using a telescopic space mechanical arm;

s3, climbing the reproducible multi-branch super-redundant space robot to the main mirror part along the adapter on the outer wall of the cabin body;

s4, taking out the spare modular sub-mirrors in the freight transport bin by using a telescopic space manipulator and carrying the spare modular sub-mirrors to a working space of the reproducible multi-branch super-redundant space robot, and grabbing the spare modular sub-mirrors by using the working arm by using the reproducible multi-branch super-redundant space robot;

s5, the reproducible multi-branch super-redundant space robot crawls to a fault modular secondary mirror along the mirror surface of the primary mirror;

s6, unlocking a standard interface three-locking device of the modular sub-mirror, and disassembling the fault modular sub-mirror by using a working arm of the reproducible multi-branch super-redundant space robot;

s7, assembling the standby modular sub-mirrors by utilizing a reproducible multi-branch super-redundant space robot working arm;

and S8, installing the light shield by using a telescopic space mechanical arm.

The invention has the beneficial effects that:

1. the invention divides a large space telescope which is modularly designed and assembled into a main mirror part, a secondary mirror part and a light blocking part, utilizes a space robot system consisting of a telescopic space mechanical arm and a reproducible multi-branch super-redundant space robot to maintain the space telescope on track, and replaces a fault module.

2. The invention discloses a method for maintaining a large-scale space telescope by the cooperative operation of a space robot system consisting of a telescopic space manipulator and a reproducible multi-branch super-redundant space robot, which is used for performing technical reserve for an on-orbit maintenance task by using a multi-space robot system.

Drawings

FIG. 1 is a schematic diagram of an in-orbit maintenance system of an ultra-large space telescope in the invention;

FIG. 2 is a schematic diagram of the ultra-large space telescope of the present invention;

FIG. 3 is a schematic diagram of a four-branch configuration of a reproducible multi-branch super-redundant space robot according to the present invention;

wherein: 1. a freight transport bin; 2. a rotatable spacecraft platform; 3. a solar wing panel turnover; 4. a telescopic space manipulator; 5. a three-mirror module; 6. an adapter; 7. a reproducible multi-branch super-redundant space robot; 8. A modular sub-mirror; 9. a secondary mirror support; 10. a secondary mirror module; 11. a light shield; 12. the lens hood mounting base.

Detailed Description

For a better understanding of the objects, structure and function of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.

The assembly system comprises a freight cabin 1, a rotatable spacecraft platform 2, a solar wing turning plate 3, a telescopic space mechanical arm 4, a three-mirror module 5, an adapter 6 and a reproducible multi-branch super-redundant space robot 7, wherein the freight cabin 1 in the system is positioned at the lowest end, the rotatable spacecraft platform 2 is positioned on the freight cabin 1, the rotatable spacecraft platform 2 is mainly divided into two parts, the part fixedly connected with the freight cabin 1 is a fixed part, and the other end of the rotatable spacecraft platform is a rotatable part, so that the assembly system has the capability of rotating relative to the fixed part. The two solar wing turning plates 3 are radially and equidistantly arranged on the fixed part of the rotatable spacecraft platform 2. The telescopic space manipulator 4 is positioned on the fixing part of the rotatable spacecraft platform 2, and the telescopic space manipulator 4 can grab and carry the telescope modular sub-mirror 8 in the freight transport bin 1 and can assemble and operate the modular sub-mirror 8. The three-mirror module 5 is located on the axis of the rotatable spacecraft platform 2, is fixedly connected with the rotating part of the rotatable spacecraft platform 2, and rotates along with the rotation of the rotating part of the rotatable spacecraft platform 2. The cargo transport bin 1 and the rotatable spacecraft platform 2 are distributed with adapters 6, and the reproducible multi-branch super-redundant space robot 7 can move among the adapters 6;

the telescoping space manipulator 4 is a fixed base manipulator, and is an SSRMS shoulder-elbow-wrist offset manipulator.

The telescopic space mechanical arm 4 has seven rotational degrees of freedom and two telescopic arm rods, the two long arm rods are the telescopic arm rods, the mechanical arm is a passive telescopic active locking type mechanical arm, and the telescopic arm has two forms of complete contraction and complete extension.

The telescopic arm rod can change the working space of the mechanical arm, the rotating part of the rotatable spacecraft platform 2 can drive the space telescope system to rotate relative to the telescopic mechanical arm 4, the working space of the telescopic mechanical arm 4 can be increased due to the two designs, and the problem that the working space gradually becomes larger along with the continuous splicing of the modular sub-mirrors 8 can be solved.

The reproducible multi-branch super-redundant space robot 7 is a novel variable-configuration space robot, and can change the number of branches per se and change the composition of each branch according to task needs.

Each branch of the reproducible multi-branch ultra-redundant space robot 7 can combine a large number of joints with standardized module interfaces and passive telescopic arms according to task requirements.

The reproducible multi-branch super-redundant space robot 7 can form a required space robot configuration by combining a plurality of joints with standardized module interfaces and a plurality of branches formed by passive telescopic arm rods according to task requirements, and the reproducible multi-branch super-redundant space robot has three-branch and four-branch configurations which are commonly used as a working arm and a fixed arm of the reproducible multi-branch super-redundant space robot 7.

The fixed arm of the reproducible multi-branch super-redundant space robot 7 can be connected with the adapters 6 uniformly distributed on the surface of the spacecraft, and the adapters 6 can ensure the mechanical and electrical connection between the reproducible multi-branch super-redundant space robot 7 and the cabin body.

Splitting the ultra-large space telescope into: the mirror comprises a main mirror part, a secondary mirror part and a light blocking part, wherein the main mirror part is formed by splicing modular sub-mirrors 8 around three mirror modules 5, the secondary mirror part comprises a secondary mirror bracket 9 and a secondary mirror module 10, and the light blocking part comprises a light shield 11 and a light shield mounting base 12;

determining whether the fault occurs in the primary mirror part, the secondary mirror part or the light blocking part through fault detection and analysis;

the first embodiment is as follows: the embodiment is described with reference to fig. 1 to 3, and provides an on-orbit maintenance method of a light blocking part of a super-large space telescope based on a multi-space robot system, which is realized by the following steps:

the method comprises the following steps: specifying a malfunctioning light shield 11 among the six light shields 11 of the light blocking section;

step two: judging whether the light shield 11 with a fault is in the smart working space of the telescopic space manipulator 4, if the position of the light shield is not beneficial to the operation of the manipulator, the rotatable part of the rotatable spacecraft platform 2 drives the light shield 11 to rotate to a proper maintenance position;

step three: the telescopic space mechanical arm 4 is unlocked, and the freight cabin 1 provided with the spare light shield 11 is unlocked;

step four: the telescopic space manipulator 4 moves to the position near the fault light shield 11 and is connected with the light shield through an upper adapter of the light shield 11;

step five: unlocking a locking mechanism between the light shield 11 and the light shield mounting base 12, and disassembling the fault light shield 11 by using the telescopic space mechanical arm 4;

step six: the retractable space robot 4 carries the spare light shield 11 in the freight container 1 to the vicinity of the assembly point and assembles the same.

In the present embodiment, the light shield 11 is connected to the light shield mounting base 12 through a standardized interface, which provides a mechanical locking effect and has a reliable unlocking capability.

The second embodiment is as follows: the embodiment is explained by referring to fig. 1 to 3, and the embodiment provides an on-orbit maintenance method for a secondary mirror module 10 of a secondary mirror part of an ultra-large space telescope based on a multi-space robot system, which is realized by the following steps:

the method comprises the following steps: the telescopic space mechanical arm 4 is unlocked, the reproducible multi-branch super-redundant space robot 7 is unlocked, and the freight transport bin 1 provided with the standby secondary mirror module is unlocked;

step two: the telescopic space mechanical arm 4 is used for disassembling the light shield 11 at the secondary mirror bracket 9;

step three: the reproducible multi-branch super-redundant space robot 7 climbs to the secondary mirror bracket 9 along the adapter on the outer wall of the cabin;

step four: the standby secondary mirror module 10 in the freight transport bin 1 is taken out by using the telescopic space mechanical arm 4 and is transported to the working space of the reproducible multi-branch super-redundant space robot 7, and the reproducible multi-branch super-redundant space robot 7 uses the working arm to grab the standby secondary mirror module 10;

step five: the reproducible multi-branch super-redundant space robot 7 crawls to the installation position of a secondary mirror module 10 along a secondary mirror bracket 9;

step six: unlocking a locking device between the secondary mirror module 10 and the mounting mechanism, and disassembling the fault secondary mirror module 10 by utilizing a working arm of the reproducible multi-branch super-redundant space robot 7;

step seven: assembling the standby secondary mirror module 10 by utilizing the working arm of the reproducible multi-branch super-redundant space robot 7;

step eight: the light shield 11 at the secondary mirror support 9 is mounted by means of the telescopic space manipulator 4.

In the embodiment, the reproducible multi-branch super-redundant space robot 7 has a four-branch configuration, wherein two branches are fixed arms, the fixed arms can be used for crawling on the surface of the spacecraft, and the remaining two branches are working arms for disassembling and assembling.

In the present embodiment, one working arm of the reproducible multi-branch super-redundant space robot 7 grasps the secondary mirror module 10, and crawls to the installation position of the secondary mirror module 10 along the secondary mirror bracket 9 by using two fixed arms.

In the present embodiment, the secondary mirror module 10 and the secondary mirror holder 9 are connected by a second standardized interface having mechanical locking and electrical connection capabilities, which will be described with reference to fig. 1 and 2.

The third concrete implementation mode: the embodiment is explained by referring to fig. 1 to 3, and the embodiment provides an on-orbit maintenance method for a secondary mirror bracket 9 of a secondary mirror part of an ultra-large space telescope based on a multi-space robot system, which is realized by the following steps:

the method comprises the following steps: judging whether the secondary mirror support 9 with the fault is in the flexible working space of the telescopic space mechanical arm 4 or not, if the position of the secondary mirror support 9 is not beneficial to the mechanical arm operation, the rotatable part of the rotatable spacecraft platform 2 drives the secondary mirror support 9 to rotate to a proper maintenance position;

step two: the telescopic space mechanical arm 4 is unlocked, the reproducible multi-branch super-redundant space robot 7 is unlocked, and the freight cabin 1 provided with the standby secondary mirror bracket 9 is unlocked;

step three: the telescopic space mechanical arm 4 is used for disassembling the light shield 11 at the secondary mirror bracket 9;

step four: crawling to the installation position of the secondary mirror module 10 along the outer wall of the cabin body and the secondary mirror support 9 by using the reproducible multi-branch super-redundant space robot 7, and detaching the secondary mirror module 10;

step five: disassembling the failure secondary mirror bracket 9 by using the telescopic space mechanical arm 4;

step six: taking out the standby secondary mirror bracket 9 in the freight cabin 1 by using the telescopic space mechanical arm 4 and carrying the standby secondary mirror bracket to a mounting position for assembly;

step seven: crawling to the installation position of the secondary mirror module 10 along the secondary mirror support 9 by using the reproducible multi-branch super-redundant space robot 7, and installing the secondary mirror module 10;

step eight: a light shield 11 at the secondary mirror bracket 9 is arranged by using the telescopic space mechanical arm 4;

the fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to 3, and provides an on-orbit maintenance method for a main mirror part of an ultra-large space telescope based on a multi-space robot system, which is realized by the following steps:

the method comprises the following steps: the telescopic space mechanical arm 4 is unlocked, the reproducible multi-branch super-redundant space robot 7 is unlocked, and the freight transport bin 1 provided with the standby modular sub-mirror 8 is unlocked;

step two: the telescopic space manipulator 4 is used for disassembling the light shield 11;

step three: the reproducible multi-branch super-redundant space robot 7 climbs to the main mirror part along the adapter 6 on the outer wall of the cabin body;

step four: the spare modular sub-mirror 8 in the freight transport bin 1 is taken out by using the telescopic space mechanical arm 4 and is carried to the working space of the reproducible multi-branch super-redundant space robot 7, and the reproducible multi-branch super-redundant space robot 7 grabs the spare modular sub-mirror by using the working arm;

step five: the reproducible multi-branch super-redundant space robot 7 crawls to a fault modular sub-mirror 8 along an adapter 6 on the mirror surface of the main mirror;

step six: unlocking a three-locking device of a standardized interface of the modular sub-mirror 8, and disassembling the fault modular sub-mirror 8 by using a working arm of the reproducible multi-branch super-redundant space robot 7;

step seven: assembling the standby modular sub-mirror 8 by utilizing a working arm of the reproducible multi-branch super-redundant space robot 7;

step eight: the light shield 11 is installed by using the telescopic space manipulator 4;

it is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.