Angular momentum feedforward compensation method for spatial scanning mechanism and compensation system

A technology of feed-forward compensation and space scanning, which is applied in the direction of motor vehicles, space navigation equipment, space navigation vehicles, etc., to achieve the effect of improving imaging quality, reducing configuration, and easy engineering realization

Active Publication Date: 2019-11-15
SHANGHAI SATELLITE ENG INST
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This method is not applicable to the angular momentum feed-forward comp

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  • Angular momentum feedforward compensation method for spatial scanning mechanism and compensation system
  • Angular momentum feedforward compensation method for spatial scanning mechanism and compensation system
  • Angular momentum feedforward compensation method for spatial scanning mechanism and compensation system

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[0047] 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 pointed out that for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0048] The present invention designs an angular momentum feedforward compensation method for a kind of remote sensing satellite that adopts a scanning camera with a fixed scanning law as a load.

[0049] Next, the present invention will be described in further detail.

[0050] A method for angular momentum feedforward compensation of a spatial scanning mechanism includes the following steps:

[0051] S1, building an angular momentum feedforward compensation model: build an angular moment...

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Abstract

The invention provides an angular momentum feedforward compensation method for a spatial scanning mechanism. The angular momentum feedforward compensation method comprises the following steps of S1, constructing an angular momentum feedforward compensation model, wherein the angular momentum feedforward compensation model is constructed according to a scanning motion model of the spatial scanningmechanism; S2, information acquisition is carried out, wherein an on-board computer collects start time information of the space scanning mechanism and reversing time information in the motion process; and S3, calculating and outputting the final rotating speed of a reaction flywheel, wherein the on-board computer outputs the final rotating speed of the reaction flywheel according to the angular momentum feedforward compensation model obtained in the step S1 in combination with the acquisition information in the step S2, and angular momentum feedforward compensation for the space scanning mechanism is achieved. According to the characteristics of a method of a type of scanning camera scanning motion law, the angular momentum feedforward compensation method of remote sensing satellites carrying such loads is designed, and the imaging quality of the remote sensing satellites can be better improved.

Description

technical field [0001] The invention relates to the technical field of aerospace equipment control, in particular to an angular momentum feedforward compensation method and a compensation system for a space scanning mechanism. Background technique [0002] The camera used by a class of remote sensing satellites uses the movement of the scanning mechanism to achieve large-scale observation tasks. The movement of the scanning mechanism will affect the quality of remote sensing imaging. Therefore, it is necessary to perform motion compensation to make the attitude stability of the satellite meet the target. This type of scanning mechanism usually has a fixed motion law, and motion disturbance can be suppressed through feedforward torque or angular momentum compensation. [0003] After searching the existing technology, the invention patent with the application number 201811511144.8 discloses a control method for the spin-up and de-spin of the satellite momentum wheel on-orbit a...

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Application Information

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IPC IPC(8): B64G1/10B64G1/22B64G1/24
CPCB64G1/10B64G1/22B64G1/24
Inventor 韩旭俞洁陆国平铁琳赵晋陈祥刘伟任秉文伍亚运
Owner SHANGHAI SATELLITE ENG INST
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