Design method of unconstrained suspension system with center of mass automatic alignment function

Abstract

The invention discloses a design method of an unconstrained suspension system with the center of mass automatic alignment function. The system comprises a three-degree-of-freedom rotating follow-up module, a fastening module, a center of mass alignment module and a data acquisition and control module. The three-degree-of-freedom rotating follow-up module can guarantee that a spacecraft conducts approximately unconstrained pitching, yawing and rolling motion under low friction interference; the fastening module can adjust the degree of the suspension system for clamping the spacecraft under the action of a motor; the center of mass alignment module can be matched with the fastening module to automatically align the center of mass of the spacecraft and automatically clamp the spacecraft when the structure of the spacecraft changes and guarantee that an equivalent suspension point always coincides with the center of mass; the data acquisition and control module is used for system signal transmission and coordination control of the modules and achieves the automatic alignment of the center of mass and unconstrained suspension of the spacecraft of the variable structure. The method has the advantages that three-rotational-degree-of-freedom motion of the spacecraft of the variable structure can be guaranteed only through single-point suspension, no coupling exists in the system, the system is easy to control, the center of the mass can be automatically aligned, and clamping force can be automatically adjusted.

Description

Technical field [0001] The invention belongs to the technical field of ground verification of spacecraft navigation, guidance and control systems, and in particular relates to a method for realizing a center of mass automatic alignment unconstrained suspension system for ground verification of variable-structure spacecraft. Background technique [0002] Aerospace engineering is a high-risk, high-investment, high-reward, highly complex and high-precision system engineering. Its development level determines whether it can seize the high-tech commanding heights and maximize the use of space resources. There is no doubt that it is imminent to actively carry out aerospace technology research in our country. However, the space environment is extremely harsh. In order to successfully complete space missions, sufficient experiments must be carried out on the ground. Therefore, various space agencies at home and abroad attach great importance to the experimental verification of spacec...

AI Technical Summary

Problems solved by technology

However, the unconstrained structural part of the attitude motion of the test system announced by the above two patents cannot be applied to the verification test of the attitude maneuver of the variable structure spacecraft.

[0004] In order to overcome the deficiencies of the existing spacecraft ground test method in dealing with the deviation of the center of mass of the variable structure spacecraft, the present invention proposes a method for realizing the unconstrained suspension system suitable for the ground verification of the variable structure spacecraft, which can occur at the center of mass of the spacecraft Automatic alignment of the offset, combined with the suspension active gravity compensation system, can provide a microgravity environment for the variable structure spacecraft to approximate unconstrained six-degree-of-freedom movement, and then reproduce its real movement in the space microgravity environment , to ensure the effectiveness of the ground-verified navigation, guidance and control systems

Images