Closed-loop control system attitude introducing and correcting method based filtering and smoothing

A closed-loop control and filtering smoothing technology, which is applied in space navigation equipment, space navigation vehicles, space vehicle guidance devices, etc., can solve the problem of large short-term control errors of the closed-loop control system

Active Publication Date: 2019-10-15
BEIJING INST OF CONTROL ENG
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Problems solved by technology

[0002] Different imaging modes of the satellite load require different attitude guidance correction methods. When the satellite switches between these different imaging modes, it also needs to introduce different attitude guidance corrections. If the calculated attitude guidance corrections are directly introduced into The closed-loop control system of the satellite attitude will cause the short-term control error of the closed-loop control system to be too large, so that the actuator receives and responds to a short-term large impact command. This frequent action is very harmful to the long-term use of the actuator. influences

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  • Closed-loop control system attitude introducing and correcting method based filtering and smoothing
  • Closed-loop control system attitude introducing and correcting method based filtering and smoothing
  • Closed-loop control system attitude introducing and correcting method based filtering and smoothing

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Embodiment

[0085] The present invention is described in detail below:

[0086] Assume that the satellite operates in a near-earth orbit with semi-major axis a=6894.210511km, inclination i=97.542°, eccentricity e=0.000356, and argument of perigee f=282.071°.

[0087] A closed-loop control system attitude introduction correction method based on filter smoothing, the method calculates the target attitude correction amount required to be introduced into the closed-loop control system according to the attitude guidance correction method required by the imaging mode, and combines the newly calculated attitude correction amount in each cycle with the above The attitude correction amount introduced into the system in one cycle is filtered and smoothed, and the result is used as the attitude correction amount introduced into the system in real time in each cycle;

[0088] The method includes proportional control and differential control, wherein the proportional control step includes:

[0089] (...

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Abstract

The invention relates to a closed-loop control system attitude introducing and correcting method based filtering and smoothing, and belongs to the technical field of satellite attitude control. The mission planning system design method based on mobile capacity constraints provided by the invention is a new method aiming at multiple mode imaging mission planning such as multi-spot targets realization, active push-scan with uniform ground speed and scan with uniform angular velocity, well solves the problems of implementation difficulty of task command on unified imaging on a satellite due to the fact that active push-scanning and passive push-scanning imaging tasks are mixed and active push-scanning tasks are complex, and well solves the problems of calculation of a shortest mobile time ofeach imaging task under the constraints of attitude mobile capacities.

Description

technical field [0001] The invention relates to an attitude introduction and correction method for a closed-loop control system based on filter smoothing, and belongs to the technical field of satellite attitude control. Background technique [0002] Different imaging modes of the satellite load require different attitude guidance correction methods. When the satellite switches between these different imaging modes, it also needs to introduce different attitude guidance corrections. If the calculated attitude guidance corrections are directly introduced into The satellite attitude closed-loop control system will cause the short-term control error of the closed-loop control system to be too large, so that the actuator receives a short-term large impact command and responds. This frequent action is very harmful to the long-term use of the actuator. influences. Contents of the invention [0003] The technical problem of the present invention is: to overcome the deficiencies ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/24
CPCB64G1/24B64G1/245
Inventor 陆栋宁王淑一关新张万利谢晓兵谌颖张晋李艳吴倩齐天翼徐李佳孙鲲
Owner BEIJING INST OF CONTROL ENG
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