An attitude-orbit coupling control method for tracking the characteristic parts of non-cooperative targets

Abstract

The invention provides an attitude-orbit coupling control method for tracking the characteristic parts of non-cooperative targets. The steps include: establishing a relative attitude motion dynamics model based on relative quaternions and a relative orbital dynamics based on tracking the motion trajectory of the characteristic parts of non-cooperative targets Model; conduct attitude-orbit coupling analysis and design and track the trajectory of non-cooperative target feature parts; design a relative quaternion feedback attitude control law that does not depend on the dynamic information of the target star and an optimal real-time closed-loop feedback control law with attitude feedback information. The attitude-orbit coupling control method does not need the dynamic information of the target spacecraft, which is in line with the characteristics of non-cooperative targets; it is suitable for the target spacecraft in a three-axis stable state or a slow rotation state; it can enable the tracking spacecraft to track the characteristic parts of the target spacecraft Capability, good control accuracy, robustness and safety, and easy engineering implementation, so as to carry out reliable and effective capture tasks.

Description

technical field The invention relates to a relative motion control technology of a spacecraft, and belongs to the field of spacecraft control, in particular to an attitude-orbit coupling control method for tracking the characteristic parts of a non-cooperative target. Background technique With the rapid expansion of aerospace technology application fields, the structure and composition of spacecraft are becoming more and more complex, and the performance and technical level are constantly improving. Under such circumstances, how to ensure a more durable, stable, and high-quality orbital operation of spacecraft in a complex space environment has become an important problem to be solved in the field of aerospace technology. On-orbit service and operation has become an effective way to solve this problem. On-orbit service technology can be used for on-orbit assembly of complex and large spacecraft, and on-orbit capture, module replacement, and fuel filling of spacecraft that h...

AI Technical Summary

Problems solved by technology

During the ultra-short-distance on-orbit service and operation for non-cooperative targets, the tracking spacecraft cannot simply maintain a conventional mode such as ground stability, but needs to use the relative status information obtained from the measurement to make the capture mechanism of the tracking spacecraft and The capture position of the target spacecraft is always aligned, that is, the attitude tracking is performed on the characteristic parts of the target, and at the same time, the relative position still needs to complete operations such as approaching and flying around. Therefore, there is a coupling effect between the relative orbits and relative attitudes of the two stars. Problem, the purpose of this invention is to provide an attitude-orbit coupling control method for tracking the characteristic parts of non-cooperative targets, which can improve the control accuracy of the approaching capture section and realize reliable and effective capture and docking tasks

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