Balanced gliding trajectory self-adaptive planning method and system based on inverse kinetic solution and medium

Abstract

The invention relates to a hypersonic flight vehicle, and particularly discloses a balanced gliding trajectory self-adaptive planning method and system based on inverse kinetic solution, and a medium.The balanced gliding trajectory self-adaptive planning method comprises the implementation steps: designing a geometric trajectory meeting basic task requirements; determining the control quantity required by the geometric trajectory based on the inverse idea of dynamics, and mapping the control quantity to a flight constraint space; solving a preset speed analysis prediction model based on the designed geometric trajectory and the controlled quantity thereof; determining a design space of each control quantity so as to obtain a flight corridor; carrying out planning feasibility judgment based on the flight corridor, and if the control quantity does not meet the flight constraint or the terminal state does not meet the task requirement, feeding back, adjusting and iterating geometric trajectory parameters; otherwise, ending the planning. According to the balanced gliding trajectory self-adaptive planning method, the terminal speed can be effectively predicted, and the process state can be well predicted, and necessary control can be implemented, and the balanced gliding trajectory self-adaptive planning method has the advantages of real-time performance and precision.

Description

technical field [0001] The invention relates to the field of aircraft dynamics and guidance, in particular to an adaptive planning method, system and medium for balanced gliding trajectory based on inverse dynamics solution, which are used for adaptive planning of hypersonic aircraft. Background technique [0002] Hypersonic gliding vehicles are subject to many complex flight constraints and flight missions during flight. At the same time, the complex and dynamic changes of the battlefield environment put forward higher requirements for the rapidity and task adaptability of ballistic planning. From the point of view of flight dynamics, the trajectory planning problem of glide vehicle can be roughly divided into two categories: dynamics forward problem and dynamics inverse problem. The dynamics forward problem is to control the magnitude and direction of the force on the aircraft by designing the control quantity of the aircraft, and obtain the corresponding dynamic trajecto...

AI Technical Summary

Problems solved by technology

Judging from the current research results, there are still two problems to be solved when applying the dynamic inverse method to the trajectory planning process of a hypersonic glide vehicle. Flight constraints and mission objectives can also ensure the achievability of the geometric trajectory from the dynamics level; the second is the prediction of the terminal state of the trajectory. In order to achieve the established mission objectives, it is necessary to predict the terminal state at the stage of the geometric trajectory. It implements control, but among many current prediction algorithms, the analytical prediction method has low prediction accuracy, and the numerical prediction method has a large calculation cost, and it is difficult to balance the real-time and accuracy of prediction.

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