| 动态调整航向角误差走廊的侧向制导策略 |
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| 引用本文： | 朱凯,齐乃明,秦昌茂.动态调整航向角误差走廊的侧向制导策略[J].哈尔滨工业大学学报,2011,43(1):31-35. |
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| 作者姓名： | 朱凯 齐乃明 秦昌茂 |
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| 作者单位： | 哈尔滨工业大学,哈尔滨工业大学航天学院,哈尔滨工业大学航天学院 |
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| 摘 要： | 针对传统的侧向制导方法在气动参数存在不确定性时,因气动力和倾侧角剖面的变化而造成较大的制导误差,提出了一种基于动态航向角误差走廊的侧向制导方法.根据参考航向角误差走廊和实际升阻比的估计值在线调整航向角误差门限.在飞行轨迹末端根据当前速度和航向角误差的导数对反转点进行预测.该制导方法对气动参数摄动具有较强的鲁棒性,并避免...
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| 关 键 词： | 再入 侧向制导 气动参数不确定性 动态航向角误差走廊 预测制导 |
A lateral guidance method with dynamic heading error corridor |
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| ZHU Kai,QI Nai-ming and QIN Chang-mao.A lateral guidance method with dynamic heading error corridor[J].Journal of Harbin Institute of Technology,2011,43(1):31-35. |
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| Authors: | ZHU Kai QI Nai-ming and QIN Chang-mao |
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| Affiliation: | School of Astronautics,Harbin Institute of Technology,150001 Harbin,China;School of Astronautics,Harbin Institute of Technology,150001 Harbin,China;School of Astronautics,Harbin Institute of Technology,150001 Harbin,China |
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| Abstract: | To improve the lateral guidance performance, a new lateral guidance approach based on the dynamic heading error corridor is proposed. The bank reversal is determined by the dynamic heading error threshold which is on-line adjusted according to the reference heading error corridor and the estimated actual lift-to-drag ratio. Near the end of the trajectory, the bank reversal is determined by the terminal heading error predictor which demands the derivative of heading error respect to the velocity and current velocity. The proposed method effectively improves the terminal guidance precision in the presence of aerodynamic model uncertainty, and prevents unnecessary bank reversals. Simulation results validate the effectiveness of the method. |
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| Keywords: | re-entry lateral guidance aerodynamic uncertainty dynamic heading error corridor prediction guidance |
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