A Dynamic Tracking Method of Energy Angle in Maneuvering Process Based on Fusing Target Attitude

Abstract

The invention discloses a dynamic tracking method of energy angle in the maneuvering process based on the fusion target attitude. On the one hand, the relationship between the electric push orbit control coordinate system, the electric push ignition pressure inclination angle demand, the sun vector direction, and the wheel control capability is integrated to give the electric push ignition process. The dynamic tracking energy angle calculation method that meets the energy angle accuracy index; on the other hand, according to the ignition direction adjustment requirements in the electric push orbit transfer, the target attitude quaternion at each moment of the maneuvering process is obtained through trajectory planning, and the real-time solution is aimed at the current time, the target energy angle of the current orbital position, get the energy angle deviation at the initial moment relative to the ignition direction adjustment, use the axis of the orbit control ignition direction as the attitude compensation Euler axis, and use the energy angle deviation as the attitude compensation Euler angle to obtain the fusion target attitude, so that the energy requirements for Japan can be met immediately after the electric ignition direction is adjusted in place. This method has been applied in orbit to my country's new generation of geosynchronous orbit large-scale satellite platforms, and has high engineering practical value.

Description

technical field [0001] The invention relates to a dynamic tracking method of an energy source angle in a maneuvering process based on a fused target attitude, belonging to the field of spacecraft attitude control. Background technique [0002] Dongfanghong-5 satellite public platform (hereinafter referred to as DFH-5 platform) is my country's next-generation large-scale geosynchronous orbit satellite public platform. The Shijian 20 satellite (hereinafter referred to as the SJ-20 satellite) is a geosynchronous orbit new technology test satellite developed based on the DFH-5 platform, with the goal of verifying the key technologies of the DFH-5 platform. One of the important key technologies is the combined orbit change of chemical propulsion and electric propulsion, that is, after the separation of the satellite and the rocket, the chemical apogee engine is used to achieve multiple orbit changes, and after the satellite is sent to a handover orbit at a certain height and a ce...

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Problems solved by technology

[0005] When using electric propulsion to raise the semi-major axis of the orbit and adjust the inclination angle, it is necessary to adjust the ignition direction before and after the orbital angle of 90° and 270°. However, because the maneuvering time varies according to the maneuvering angle, it is difficult to obtain the display expression of the energy offset angle when the maneuvering is in place, and the preset energy angle is likely to enter the attitude planning multiple times due to large deviations, and even affect the normal ignition time ignition

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