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Adaptive Constrained On-board Guidance Technology forPowered Glide Vehicle
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作者 Huang Rong Wei Changzhu +1 位作者 Liu Yanbin Lu Yuping 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2017年第2期125-133,共9页
To make full use of expanded maneuverability and increased range,adaptive constrained on-board guidance technology is the key capability for a glide vehicle with a double-pulse rocket engine,especially under the requi... To make full use of expanded maneuverability and increased range,adaptive constrained on-board guidance technology is the key capability for a glide vehicle with a double-pulse rocket engine,especially under the requirements of desired target changing and on-line reconfigurable control and guidance.Based on the rapid footprint analysis,whether the new target is within the current footprint area is firstly judged.If not,the rocket engine ignites by the logic obtained from the analysis of optimal flight range by the method of hp-adaptive Gauss pseudospectral method(hp-GPM).Then,an on-board trajectory generation method based on powered quasi-equilibrium glide condition(QEGC)and linear quadratic regulator(LQR)method is used to guide the vehicle to the new target.The effectiveness of the guidance method consisted of powered on-board trajectory generation,LQR trajectory tracking,footprint calculation,and ignition time determination is indicated by some simulation examples. 展开更多
关键词 adaptive constrained on-board guidance double-pulse rocket engine hp-adaptive Gauss pseudospectral method powered quasi-equilibrium glide condition linear quadratic regulator(LQR)trajectory tracking
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混合工质R407C替代R22的房间空调器性能试验
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作者 曾冬琪 江燕涛 《湛江海洋大学学报》 CAS 2004年第3期42-46,共5页
在理论计算分析比较非共沸混合制冷剂R4 0 7C和R2 2的热力性能的基础上 ,试验了R4 0 7C替代R2 2的房间空调器性能。结果表明用R4 0 7C替代R2 2时 ,对现有的空调系统和生产设备无需作大的调整 ,还验证了R4 0 7C在蒸发器上存在温度滑移 ,... 在理论计算分析比较非共沸混合制冷剂R4 0 7C和R2 2的热力性能的基础上 ,试验了R4 0 7C替代R2 2的房间空调器性能。结果表明用R4 0 7C替代R2 2时 ,对现有的空调系统和生产设备无需作大的调整 ,还验证了R4 0 7C在蒸发器上存在温度滑移 ,并就进一步提高R4 0 7C房间空调器性能提出了建议。 展开更多
关键词 空调器性能 房间空调器 混合工质 R407C 温度滑移
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