Spacecraft multi-constrained attitude maneuver optimization method based on rotating path quality

Abstract

The invention discloses a spacecraft multi-constrained attitude maneuver optimization method based on the rotating path quality, and belongs to the technical field of spacecraft attitude planning andoptimization. The implementation method of the invention includes: establishing a rotating path quality evaluation model, and respectively giving a continuous form and a discrete form; evaluating therotation path quality by the reciprocal of the sum of the error distances of each path point and a target point; establishing a spacecraft attitude kinematics and dynamics model, and considering bounded constraints of the control torque and the angular velocity; determining a plurality of pointing constraints that the spacecraft needs to satisfy during the attitude maneuver; determining a startingattitude point and a target attitude point of the spacecraft attitude maneuvering process, and the starting angular velocity and the target angular velocity; solving the multi-constrained attitude maneuver based on the rotation path quality by using the optimization method, and obtaining the attitude path with high rotation path quality. The method can shorten the path length, reduce the path unwinding, obtain the attitude path with high rotation path quality, and is more beneficial to the actual attitude tracking control.

Description

technical field [0001] The invention relates to a multi-constraint attitude maneuver optimization method for a spacecraft based on the quality of a rotation path, and belongs to the technical field of spacecraft attitude planning and optimization. Background technique [0002] Attitude maneuvers are the process by which a spacecraft changes from one orientation to another. In order to fulfill the requirements of specific space missions, spacecraft need to perform fast or low-energy attitude maneuvers. At the same time, the spacecraft will be limited by various constraints such as boundary conditions, attitude kinematics and dynamics constraints, pointing constraints, and bounded constraints on control torque and angular velocity during attitude maneuvering. The existence of these constraints makes the attitude maneuver planning problem very difficult to solve. When the optimization metrics are further considered, the solution of the problem becomes extremely challenging. ...

AI Technical Summary

Problems solved by technology

[0005] In view of the constrained attitude maneuver optimization problem in the prior art, which only focuses on the optimization of the dynamic characteristics of the attitude path and then obtains the attitude path, it is easy to have problems such as path unwinding. The technical problem to be solved in the present invention is to provide a rotation-based path The multi-constraint attitude maneuver optimization method for spacecraft with quality, puts forward the concept of rotation path quality, and gives the rotation path quality evaluation model including continuous and discrete forms, reduces path length, reduces path unwinding, and solves the problem based on rotation based on optimization method. The multi-constraint attitude maneuver of the path quality can obtain the attitude path with high rotation path quality, which is more conducive to the actual attitude tracking control

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