摘要
To meet the requirements of precision strike of hypersonic vehicles in the diving phase, a trajectory planning method with terminal velocity and impact angle constraints is proposed. A two stage trajectory planning strategy is established. In the first stage, a parameterized control profile is used to adjust the flight velocity, and in the second stage, a bias proportional navigation guidance law is used for the impact angle constraint. The control profile parameters are determined by solving a multi parameter optimization problem and a single parameter searching problem. The multi parameter optimization is solved offline to maximize the feasible zone of the initial position, which improves the adaptability to initial errors. The single parameter searching with a penalty function is conducted onboard, which yields a constrained diving trajectory. The proposed trajectory planning method is verified by simulations using a hypersonic vehicle model. The results indicate that the method satisfies both the terminal velocity and impact angle constraints, has good computational performance, and is robust to the initial dispersions.
投稿的翻译标题 | Diving Trajectory Planning Method for Hypersonic Vehicles with Terminal Velocity and Impact Angle Constraints |
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源语言 | 繁体中文 |
页(从-至) | 1052-1060 |
页数 | 9 |
期刊 | Yuhang Xuebao/Journal of Astronautics |
卷 | 43 |
期 | 8 |
DOI | |
出版状态 | 已出版 - 8月 2022 |
已对外发布 | 是 |
关键词
- Diving phase
- Hypersonic vehicles
- Impact angle constraint
- Terminal velocity constraint
- Trajectory planning