一种在线再入侧向制导方法 |
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引用本文: | 常江,马清华,王根,罗建军. 一种在线再入侧向制导方法[J]. 飞行力学, 2016, 0(6): 63-66 |
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作者姓名: | 常江 马清华 王根 罗建军 |
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作者单位: | 1. 西安现代控制技术研究所第五技术部,陕西西安,710065;2. 西北工业大学航天学院,陕西西安,710072 |
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摘 要: | 侧向制导是飞行器再入制导的重要组成部分,由于传统侧向制导方法不能对倾侧角反转次数进行在线优化,往往会给再入飞行器姿态控制系统的设计带来沉重负担.为此,利用伪谱法可在线快速求解优化问题的特点,提出了一种基于伪谱法的在线再入侧向制导方法,并结合纵向预测校正制导法进行再入制导解算以缩减优化规模.仿真结果表明,在保证制导精度的前提下,所提方法有效地减少了倾侧角反转次数.
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关 键 词: | 再入飞行器 侧向制导 预测校正 伪谱法 |
An on-line method of lateral reentry guidance |
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Abstract: | Lateral guidance is an important part of reentry guidance of flight vehicles.However,the traditional lateral guidance method lacks the ability of on-line optimization,which leave attitude control system the burden of a great deal of bank angle-reversals.So in this paper,an optimized designing method working in real-time was proposed based on the high precision and convergence speed of pseudo-spectral method,and combined the longitudinal predictor-corrector method to reduce the size of optimal design.Simulation results show the effectiveness of the proposed method in reducing the number of bank-angle reversals. |
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Keywords: | reentry vehicle lateral guidance predictor-corrector pseudo-spectral method |
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