Trajectory generation of heat load test based on gauss pseudospectral method

Zhang, Yuan-long; Liu, Luhua; Tang, Guojian; Bao, Weimin

doi:10.1007/s11431-016-9025-3

Cited by 7 publications

(1 citation statement)

References 19 publications

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“…e direct shooting method (DSM) [14], particle swarm optimization algorithm [15], genetic algorithm [16], and symplectic iterative algorithm [17,18] achieve satisfying results for the specific missions. Different from other direct methods, the Gauss pseudospectral method (GPM) has obtained great attention for fast convergence, global optimization, and extensive applications in the aerospace field recently by means of approximating the control and state variables with polynomials [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Trajectory Optimization Method and Tracking Guidance for Variable-Sweep Missiles

Wei

Cheng²,

Xiangxiang³

et al. 2021

Mathematical Problems in Engineering

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In this paper, an offline hybrid trajectory optimization approach is proposed for variable-sweep missiles to explore the superiority in the diving phase. Aiming at the maximal terminal velocity with the impact angle constraint, the trajectory optimization model is formulated under multiple constraints, and the aerodynamic analysis in different sweep angles is discussed. Unlike only the attack angle used for the optimization process traditionally, the two-variable optimization scheme on both the attack angle and sweep angle is investigated for variable-sweep missiles. Then, the trajectory optimization problem is transformed into the nonlinear programming problem via a hybrid optimization strategy combining the Gauss pseudospectral method and direct shooting method to obtain the high precision and fast convergence solution. Finally, to verify the feasibility of the optimal trajectory under uncertainties, the tracking guidance law is designed on basis of the gain scheduled linear quadratic regulator control. Numerical simulation results reveal not only of the proposed hybrid optimization strategy but also of the superiority of variable-sweep missiles compared with traditional missiles.

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