Multi-system Synchronization Method for Feedforward Torque Compensation on Satellite

A multi-system and torque technology, applied in the overall field of satellites, can solve problems such as the inability to ensure compensation torque and load synchronization, and the inability to ensure satellite high-precision indicators. Guaranteed synchronization effect

Active Publication Date: 2021-04-13
SHANGHAI SATELLITE ENG INST
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Problems solved by technology

The requirement of this invention for working synchronization between multiple systems working independently cannot guarantee the synchronization of compensation torque and load work, nor can it ensure the high-precision index of the satellite

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  • Multi-system Synchronization Method for Feedforward Torque Compensation on Satellite
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  • Multi-system Synchronization Method for Feedforward Torque Compensation on Satellite

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Embodiment Construction

[0031] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0032] The present invention provides a multi-system synchronization method for on-board feed-forward torque compensation, such as Figure 1-5 As shown, there are two types of payloads on the planet, one is the payload of scanning imaging, and the other is the payload of stepping imaging. These two kinds of payloads have the same mode of on-orbit work, and also have their own unique characteristics.

[0033] refer to figure 2 , and the scanning imaging load is denoted as load 1. The scanning and comp...

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Abstract

The present invention relates to a multi-system synchronization method for on-board feed-forward torque compensation in the field of overall satellite technology, including step 1: taking the time T of a digital tube computer as a standard time reference, using the on-board time to control attitude and orbit, scan imaging load, step The time system of the imaging load is uniformly calibrated; Step 2: The digital tube computer uniformly receives and distributes the work instructions sent by the ground; Step 3: The attitude and orbit control system starts the feedforward torque compensation operation for the scanning imaging load and the stepping imaging load. , during the compensation process, the feedforward compensation is continuously synchronized with the pointing, scanning and stepping of multiple loads; Step 4: After the attitude and orbit control system completes a command compensation operation according to the agreed rules, the attitude and orbit control system stops the compensation and waits for the next command. instruction. The invention can ensure the synchronism of the compensation moment and the load work, and guarantee the realization of the high-precision index of the satellite.

Description

technical field [0001] The invention relates to the overall technical field of satellites, and in particular to a method for synchronizing multiple systems on a satellite by using feedforward torque compensation. Background technique [0002] With the continuous development of high-orbit high-precision ground imaging satellites, higher and higher requirements are put forward for the satellite's time resolution and spatial resolution. Correspondingly, the scanning speed of the load is continuously improved and the area of ​​the scanning mirror is increasing. of continuously increasing. On the one hand, for the satellite platform, it means that the disturbance torque generated by the payload is continuously increasing. However, due to the limitation of the current on-board control capability, the satellite on-board control system cannot monitor the satellite attitude changes caused by this disturbance. Effective control ensures the attitude stability of the satellite when it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/24B64G1/66
CPCB64G1/24B64G1/66B64G1/245
Inventor 曾擎王皓边志强沈毅力汪自军许娜
Owner SHANGHAI SATELLITE ENG INST
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