Transactions of Nanjing University of Aeronautics & Astronautics
Adaptive Constrained On-board Guidance Technology for Powered Glide Vehicle
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Abstract:
To make full use of expanded ma neuverability and increased range, adaptive constrained on-board guidance technology is the key capability for a glide vehicle with a double-pulse rocket engine, especially under the requirements of desired target changing and on-line reconfigurable control and guidance. Based on the rapid footprint analysis, whether the new target is within the current footprint area is firstly judged. If not, the rocket engine ignites by the logic obtained from the analysis of optimal flight range by the method of hp-adaptive Gauss pseudospectral method (hp-GPM). Then, an on-board trajectory generation method based on powered quasi-equilibrium glide condition (QEGC) and linear quadratic regulator (LQR) method is used to guide the vehicle to the new target. The effectiveness of the guidance method consisted of powered on-board trajectory generation, LQR trajectory tracking, footprint calculation, and ignition time determination is indicated by some simulation examples.
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