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RESEARCH ON SLALOM COURSE OF ARMED HELICOPTERS
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作者 唐永哲 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 1999年第1期33-35,共3页
In this paper, the eigenstructure assignment theory and methods are applied to design the lateral directional channel of armed helicopter SCAS (Stability and Control Augmentation System). The lateral directional cha... In this paper, the eigenstructure assignment theory and methods are applied to design the lateral directional channel of armed helicopter SCAS (Stability and Control Augmentation System). The lateral directional channel decoupling is reached through eigenvector shaping. And then the trajectory programming for lateral maneuver types is presented. On these bases, the ‘pilot helicopter’ closed loop system is formed, and the simulation results under different maneuvers, such as snaking, of the helicopter with lateral directional SCAS are satisfactory. The results of design are valuable for practical engineering. 展开更多
关键词 slalom course reference locus pilot helicopter colosed loop
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关于闭图像定理的一个注记
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作者 沈永红 孙小科 《甘肃高师学报》 2021年第2期1-4,共4页
闭图像定理表明Banach空间中线性算子图像的闭性蕴含算子的连续性.相反地,一个更一般的结论是从拓扑空间到Hausdorff空间的映射的连续性蕴含其图像的闭性.本文通过举例说明了其逆命题不成立,特别强调了值域空间的Haudorff分离性的重要性... 闭图像定理表明Banach空间中线性算子图像的闭性蕴含算子的连续性.相反地,一个更一般的结论是从拓扑空间到Hausdorff空间的映射的连续性蕴含其图像的闭性.本文通过举例说明了其逆命题不成立,特别强调了值域空间的Haudorff分离性的重要性.此外,利用此结论证明了Banach空间中线性算子对于弱拓扑的连续性与对于强拓扑的连续性等价.最后,通过对值域空间附加紧致性条件建立了从一个拓扑空间到一个紧致Hausdorff空间的映射的连续性与其图像闭性之间的等价刻画. 展开更多
关键词 HAUSDORFF空间 紧致空间 闭图像定理 连续性 闭性
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