地球天梯爬升机构运行能耗计算方法研究  

Study on Computing Method of Operation Energy Consumption of Earth Space Elevator Climbing Mechanism

作　　者：杨小东[1,2] 徐志良 杨启帆 彭定强 董明成 YANG Xiaodong1,2, XU Zhiliang1,2 , YANG Qifan1,2 ,PENG Dingqiang1,2 , DONG Mingcheng1,2(1. Center of Space Exploration, Ministry of Education,Chongqing University,Chongqing 400044, China;2. State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400044, Chin)

机构地区：[1]重庆大学教育部深空探测联合研究中心,重庆400044 [2]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《载人航天》2018年第4期453-458,共6页Manned Spaceflight

基　　金：载人航天预先研究项目(1611010701)

摘　　要：目前针对地球天梯系统常态运行过程中爬升机构的运行能耗研究较少,尚未提出合理的能耗计算方法。为此,基于动车组牵引/制动性能计算方法,综合考虑地球引力、空气阻力、科里奥利力、机械摩擦力及外太空真空环境等因素,分析了地球天梯爬升机构运行环境及受力,建立了地球天梯爬升机构运行能耗模型。通过求解爬升过程的启动牵引力、最大功率得到了功率分布曲线,并发现爬升机构的启动牵引力及最大功率均与阻力呈正相关关系;对地球天梯运行过程进行了分解,通过分段积分得到了地球天梯系统的爬升过程总能耗。研究结果可用于辅助确定地球天梯系统的供能方案及电机选型,也可为地球天梯系统的后续研究提供参考。At present, there are few studies on the energy consumption of the climbing mechanism during the normal operation of the Earth elevator system. No reasonable calculation method for the energy consumption has been proposed. Therefore, the operation environment and the forces exerted on the space elevator climbing mechanism were firstly analyzed. On the basis of the CRH traction/ braking performance calculation method, considering the gravity, Coriolis force, air resistance, me- chanical friction and outer space vacuum environment factors, the model of climbing operation ener-gy consumption of the Earth space elevator was established. The starting traction force and the maxi-mum power were calculated. The power distribution curve was obtained. It was found that the start-ing traction force and maximum power of the climbing mechanism were positively correlated with the resistance. The process of the Earth space elevator operation was decomposed, and then the overall energy consumption of the climbing process of the Earth space elevator system was calculated through piecewise integral calculation. The obtained results could be applied in the determination of the pow-er scheme of the Earth space elevator system and motor type selection. It can also provide referencefor the further study of the Earth space elevator system in the future.

关 键 词：地球天梯 爬升机构 运行能耗模型 能耗计算方法 

分 类 号：V514[航空宇航科学与技术—航空宇航推进理论与工程]