| 引用本文: | 吴峻,杨宇,赵宏涛,等.无人机电磁弹射器的综合制动方法.[J].国防科技大学学报,2015,37(5):61-66.[点击复制] |
| WU Jun,YANG Yu,ZHAO Hongtao,et al.Hybrid brake method for electromagnetic launcher of unmanned aerial vehicle[J].Journal of National University of Defense Technology,2015,37(5):61-66[点击复制] |
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| 无人机电磁弹射器的综合制动方法 |
| 吴峻, 杨宇, 赵宏涛, 邓志雄 |
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(国防科技大学 机电工程与自动化学院， 湖南 长沙 410073)
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| 摘要: |
| 利用直线电机实现无人机在短距离内可控地加速起飞已是固定翼无人机弹射起飞一种新的发展方向。为了使飞机分离后弹射台能在较短距离里完成制动，提出了直线电机弹射轨道末段定子实铁心涡流制动、运用Halbach永磁体阵列的涡流制动和橡胶阻尼制动等三种方式的综合方案，并分别对它们进行了分析计算。当弹射台的速度大于10m/s时，定子实铁心产生的涡流制动效果明显，当弹射台的速度低于3m/s时，定子实铁心涡流制动产生的制动力将迅速下降。Halbach永磁体阵列的涡流制动方式在飞机分离点开始实施，可以增加30％以上的制动效果。通过模型分析和碰撞试验，橡胶阻尼制动作为最后一级制动方式，能够有效吸收能量，实现在较短距离里的制动。 |
| 关键词: 电磁弹射器 永磁直线电机 涡流制动 Halbach排列 橡胶阻尼制动 |
| DOI：10.11887/j.cn.201505010 |
| 投稿日期：2014-12-06 |
| 基金项目:国家科技支撑计划资助项目（2012BAG07B01） |
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| Hybrid brake method for electromagnetic launcher of unmanned aerial vehicle |
| WU Jun, YANG Yu, ZHAO Hongtao, DENG Zhixiong |
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(College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Electromagnetic launcher for unmanned aerial vehicle (UAV) which utilizes linear motor to accelerate in short distance is already a new trend for launching fixed-wing UAV. To brake shuttle in shorter distance when aircraft taking off, a hybrid brake method including solid stator eddy current brake, eddy current brake based on Halbach permanent arrays and rubber damping brake was proposed and analyzed. When the speed of shuttle is above 10 m/s, it is notable for the brake by means of solid stator eddy current brake. In addition, when the speed of shuttle is below 3 m/s, the brake force induced by solid stator eddy current is decreased greatly. It can increase 30% brake force by Halbach permanent arrays eddy current brake. By model analysis and collision experiments, rubber damping brake can absorb kinetic energy to brake shuttle in short distance as the final stage brake. |
| Keywords: electromagnetic launcher permanent magnet linear motor eddy current brake Halbach arrays rubber damping brake |
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