Multistage cooperative control method based on active pointing ultra-quiet platform

A super-static platform, collaborative control technology, applied in the direction of motor vehicles, space navigation equipment, space navigation aircraft, etc., can solve the problems of long stabilization time, low stability, large tracking and aiming error, etc., to improve the precision level Accuracy, reduced field of view, avoids the effect of magnification
CN111619829AActive Publication Date: 2020-09-04BEIJING INST OF CONTROL ENG
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING INST OF CONTROL ENG
Publication Date
2020-09-04

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Abstract

The invention relates to a multistage cooperative control method based on an active pointing ultra-quiet platform, which is suitable for the fields of astronomical observation, high-resolution earth observation and the like with load ultra-high precision determination requirements. On the basis of a two-stage control system of a star attitude control system and a fast reflecting mirror, an ultra-static platform with a pointing function is installed between a spacecraft star and a load, and a three-stage control system composed of first-stage star attitude control, second-stage load attitude control and a third-stage fast swing mirror is formed. And high-precision control of an expected attitude is realized. Aiming at a novel spacecraft platform three-level composite system, the invention provides the multistage cooperative control method based on the active pointing ultra-quiet platform, and designs a star first-level system control law, a load second-level system control law and a fast reflecting mirror third-level system control law; and on the premise that a system response requirement is met, multi-stage multi-bandwidth composite control is achieved, and a cooperative control problem among a star body, a load and a fast reflecting mirror is solved.
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Description

technical field

[0001] The invention belongs to the field of attitude control of spacecraft, and relates to a multi-level cooperative control method based on an active pointing ultra-quiet platform. Background technique

[0002] Attitude tracking control is an important problem in the field of spacecraft control, and the demand for high-precision and high-stability attitude tracking control in engineering practice is increasingly urgent. Existing high-precision attitude tracking systems usually adopt a composite control strategy of rough tracking + fine tracking. By using the wide-angle measurement sensor to search for the target and roughly track the expected attitude, the narrow-field imaging closed-loop locks the target, and the high-bandwidth fast-swing mirror realizes closed-loop adjustment. Composite control requires two or more control systems to be implemented in series.

[0003] The coarse tracking of the James Webb Telescope for astronomical observations is mainl...

Claims

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