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无人机折叠翼分步展开机构设计及动力学分析
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作者 许冶 许国胜 +4 位作者 王钰坤 王刚 刘景旺 范伯钧 吴淼 《现代防御技术》 北大核心 2024年第1期24-33,共10页
小型巡飞无人机折叠翼的展开方案对于无人机飞行模式切换具有重要影响。针对无人机折叠翼折叠特点与展开需求,提出同步展开和分步展开2种方案。采用拉格朗日法建立折叠翼展开动力学模型,应用气动力仿真软件计算折叠翼在展开过程中所受... 小型巡飞无人机折叠翼的展开方案对于无人机飞行模式切换具有重要影响。针对无人机折叠翼折叠特点与展开需求,提出同步展开和分步展开2种方案。采用拉格朗日法建立折叠翼展开动力学模型,应用气动力仿真软件计算折叠翼在展开过程中所受空气阻力,得出折叠翼采用不同展开方案时所需驱动力矩,以驱动力矩作为评判标准,选取折叠翼最优展开方案。仿真计算结果表明,折叠翼分步展开方案可在保证展开到位的情况下,以小力矩在短时间内完成展开运动。针对折叠翼分步展开方案设计折叠翼分步展开机构,并进行结构静强度分析,验证结构方案的可行性。 展开更多
关键词 折叠翼 展开方案 拉格朗日法 动力学模型 气动力仿真 分步展开机构
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Design of Underground Load Haul Dump Hybrid Power System Based on QFD and TRIZ
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作者 XU Jun QIAO Sha +3 位作者 MA Xiaowen YUAN Kun QI Wenbo LIU Keyi 《有色金属(中英文)》 北大核心 2025年第3期462-473,共12页
As the mining industry continues to expand and international oil prices increase,more rigorous demands are being placed on the design of mining equipment.Given this,there is an urgent need to develop new power-driven ... As the mining industry continues to expand and international oil prices increase,more rigorous demands are being placed on the design of mining equipment.Given this,there is an urgent need to develop new power-driven mining equipment to solve the problems of high energy consumption and insufficient power coupling of current equipment.This study proposed a design of a hybrid power system for underground Load Haul Dump(LHD).The proposed design integrated Quality Function Deployment(QFD)and Theory of Inventive Problem Solving(TRIZ).It identified 7 user requirements and 10 related technical features,formulated 11 innovative design solutions,and ultimately adopting an electric drive hybrid power scheme.This scheme effectively addressesd power transmission coupling problems and improve the efficiency of loaders.A 6 m³hybrid power loader prototype has been developed,which reduces operational energy consumption and advances the electrification and green,low-carbon evolution of mining equipment. 展开更多
关键词 quality function deployment TRIZ LHD design solution
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