Double satellite formation collision preventing method
A satellite formation and anti-collision technology, applied in the field of satellite formation control, can solve the problems of lack of systematic overall design, simple constraints, complex algorithms, etc., and achieve the effect of strong engineering achievability, complete system, and clear hierarchy.
A satellite formation and anti-collision technology, applied in the field of satellite formation control, can solve the problems of lack of systematic overall design, simple constraints, complex algorithms, etc., and achieve the effect of strong engineering achievability, complete system, and clear hierarchy.
CN110377047AActive Publication Date: 2019-10-25SHANGHAI AEROSPACE CONTROL TECH INST
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[0030] based on the following Figure 1 to Figure 5 , specifically explain the preferred embodiment of the present invention.
[0031] In the double-star satellite formation, the formation main star is used as the reference of relative motion, and the formation control is the formation auxiliary satellite. Such as figure 1 As shown, in order to describe the motion of the formation auxiliary star relative to the formation main star, the relative orbital element Δα vector is defined:
[0032]
[0033] Among them, the subscript 1 indicates the absolute orbit number of the main star of the formation, the subscript 2 indicates the absolute orbit number of the auxiliary star of the formation, Δu indicates the difference in the relative flat-latitude argument, a is the semi-major axis, e is the eccentricity, and i is the orbital inclination , ω is the argument of perigee, Ω is the right ascension of ascending node, u is the argument of latitude;
[0034]
[0035] Among them,...
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Disclosed is a double satellite formation collision preventing method. If the three-dimensional distance between a main formation satellite and an auxiliary formation satellite is smaller than a firstthreshold, the auxiliary formation satellite issues an anti-collision warning sign, simultaneously sends a formation thruster jet limit sign, and immediately terminates the ongoing formation controltask; if the three-dimensional distance is smaller than a second threshold, the auxiliary formation satellite sends the formation thruster jet limit sign again, and a thruster self-locking valve of the auxiliary formation satellite is closed; if the three-dimensional distance is smaller than a third threshold, the main formation satellite issues an anti-collision warning sign, and performs pulse jet control to promote the main formation satellite away from the auxiliary formation satellite. The collision preventing method has clear level and complete systematicness, comprises measures of the auxiliary formation satellite and the main formation satellite from the coping roles, and comprises passive jet limit measures and active jet avoidance measures from the perspective of countermeasures,so the engineering implementability is strong, the method is simple and can be implemented on the satellites, the level of autonomy of the satellites is improved, the response is rapid, and the safety index is high.
Description
technical field [0001] The invention relates to the technical field of satellite formation control, in particular to a double-star satellite formation anti-collision method. Background technique [0002] As satellite formation flight technology gradually turns to engineering applications in the fields of earth observation and astronomical observation, the engineering technology system of formation control is gradually refined and deepened. Due to mission requirements and natural perturbations, the formation satellite system needs frequent formation control. The safety design of formation satellites is a necessary measure and prerequisite to ensure the safe implementation of missions. Its importance and urgency are obvious. In fact, formation safety design greatly reduces the risk of formation satellite collision through formation configuration design, control scheme planning, fault diagnosis, and stand-alone level / system level redundancy. However, due to the complexity of t...
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Patent Timeline
25 Oct 2019
Publication
CN110377047A
- IPC
- G05D1/10
- CPC
- G05D1/104
- Inventors
- 王文妍; 陈秀梅