无动力滑翔航空炸弹末段飞行控制技术

【类型】学位论文

【作者】袁冬玉 

【关键词】 自动驾驶仪,末端落角约束,滑模变结构,末制导律,交接班

【摘要】本论文以无动力滑翔航空炸弹为研究背景，对航空炸弹的末段飞行控制技术进行了研究，重点研究了航弹末段自动驾驶仪的设计、末段制导律的设计和中末交接班的设计问题，并进行了仿真验证。本论文内容主要包括以下几个方面：首先，进行了航弹自动驾驶仪设计。基于滑模变结构控制技术，设计了过载控制的航弹一阶滑模和二阶滑模自动驾驶仪，并就不同的投弹条件进行了仿真和分析。仿真结果表明，二阶滑模自动驾驶仪较一阶滑模自动驾驶仪具有更好的鲁棒性和抗干扰能力。其次，对航弹末段导引律进行了设计。本文利用自适应、模糊和滑模变结构控制理论，设计了自适应滑模导引律(ASMG)和模糊自适应滑模导引律(FASMG)，使同时满足精度和落角约束要求，并对所设计的导引律在不同投弹高度和有风干扰的情况下进行了仿真研究。结果表明，模糊自适应滑模导引律既适用于攻击机动目标，也适用于攻击静止目标，脱靶量较小，对干扰具有较强的鲁棒性。最后，分析研究了中末段交接班问题。针对不同末制导律设计了中末段自适应交接制导律，进行了数值仿真。结果表明，该自适应交接律实现了弹道的平滑过渡。In this dissertation, the flight control technology of terminal course was studied based on the unpowered gliding Aerial Bomb. Focus on the design of the terminal autopilot, the terminal guidance law and the handover law between midcourse and terminal course. Simulations were done to validate the correctness. The contents of this paper are summarized as follows:1. According to the Sliding-Mode Variable Structure Control technology, the first order sliding-mode autopilots and second order sliding-mode autopilots based on overload control were designed. At the same time, the simulation and analysis were done in different bombing conditions. The result showed that, compared to the first order sliding-mode autopilot, the second order sliding-mode autopilot is more robust and has more anti-jamming capability.2. At first, based on the Adaptive Control, Fuzzy Control and Sliding-Mode Variable Structure Control theory, the adaptive sliding-mode guidance law and fuzzy sliding-mode guidance law were designed ,both of the accuracy and angular constraint conditions were contented. Then, the guidance laws were compared at condition of different bombing heights and interferers of wind. The result showed that, the fuzzy sliding-mode guidance law applies to the attacks on both mobile targets and stationary targets, and it’s robust to the interferer.3. The handover law between midcourse and terminal course was studied. At first, the handover strategy based on the seeker handover and ballistic handover was studied. Then, according to different terminal guidance laws, the adaptive handover laws were designed. The result showed that, based on the adaptive handover law, smooth transition between trajectory paragraphs was realized.

【学位名称】硕士

【学位授予单位】北京理工大学

【学位授予年度】2016

【导师姓名】孟秀云

【读秀链接】读秀链接