One-sublevel umbrella control recovery route planning method based on longicorn swarm algorithm

Abstract

The invention provides a one-sublevel parachute-controlled recovery route planning method based on a longicorn swarm algorithm, which comprises the following steps: establishing a system route planning simplified mass point model, establishing a geometrical relationship of a corresponding route, establishing a one-sublevel homing route multi-objective function constraint condition on the basis ofsubsection homing, After the precision of a one-sublevel drop point is met, the system energy loss in the homing process is restrained, the optimization of the number of hovering turns in the hoveringstage is added in the multi-target optimization process, and a particle swarm optimization algorithm (BSO) based on longicorn beard search is introduced into sub-level recovery route planning. According to the method, a simplified system flight path planning mass point model is established, calculation is simple, engineering is easy to implement, energy loss of a homing process system is restrained after the precision of one sub-level drop points is guaranteed, the convergence speed and convergence stability of parameter optimization in one sub-level recovery flight path planning are increased, the solving precision of optimal parameters is improved, and the energy loss reaches the minimum while one sub-stage is accurately recovered.

Description

technical field [0001] The invention relates to the technical field of spacecraft recovery track planning, in particular to a recovery track planning method. Background technique [0002] At a time when countries are competing with each other in science and technology, the development of my country's aerospace industry has achieved very remarkable results, and its space launch activities and launch frequency rank among the top in the world. However, the non-autonomous control of the landing area of ​​the detached body wreckage usually has great safety hazards, which will cause a large waste of manpower and material resources, and the frequency and flexibility of space launch activities will also be subject to many restrictions, which cannot meet future Low-cost and flexible launch requirements for rockets. These put forward new requirements for the drop point control technology of the launch vehicle separation body. Considering that the recovery system needs to have a cert...

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Problems solved by technology

[0003] The above design only considers the possibility of an incomplete circle in the circling stage. For the case of high-altitude redundancy, it is based on the design of the lower altitude. For the first-level track after the altitude is lowered, the first-level landing is guaranteed. point accuracy, but the problem of excessive energy loss in the parafoil system has not been solved well, and further improvement is needed to enable the first stage to recover accurately while reducing system energy loss

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