Method for optimizing number and speed of climbing devices of wide-area high ladder system
An optimization method and technology of a climber, which are applied in the field of optimization and control of the ladder system, can solve the problems of not considering the huge influence of the running speed of the climber, not being able to obtain the overall plan of the ladder system, and not considering the limitation of the movement speed, etc. The effect of realizing difficulty, expanding the launch time window, and reducing the scale of the system
Pending Publication Date: 2021-02-02
CHINA ACAD OF LAUNCH VEHICLE TECH
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Problems solved by technology
The three-stage and seven-stage speed optimization schemes did not consider the limitation of the atmosphere on the speed of the climber during the optimization process, nor did they consider the huge impact of the speed of the climber on the energy system
Although the seven-stage speed optimization scheme can well suppress the residual oscillation of the system, its starting point is that the impact of the rope oscillation caused by a single climber is the least. If the number of controllers is used as a design factor, it is impossible to obtain a globally better overall solution for the ladder system
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[0020] The following describes the present invention in detail, and the features and advantages of the present invention will become more clear and definite along with these descriptions.
[0021] The invention provides a method for optimizing the number and speed of climbers in a wide-area ladder system, comprising the following steps:
[0022] Step 1: According to the overall demand for space transportation, determine the carrying capacity M, transportation period T and rope length L of the ladder system 0 and other basic parameters; according to the equal stress design concept of the ladder system, and the selected rope material parameters of the ladder system (including material density γ, maximum cross-sectional area A m , design stress σ 0 , elastic modulus E), using Newton's second law to analyze the force of the rope mass microelement, and determine the vertex anchor mass m of the wide-area ladder system through derivation c .
[0023] Such as figure 2 As shown in...
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The invention provides a method for optimizing the number and speed of climbers of a wide-area high ladder system, which comprises the following steps of: determining the vertex anchor mass of the wide-area high ladder system according to the overall requirement of space transportation and rope material parameters of the high ladder system, establishing a kinetic model of multi-climber motion, analyzing a Coriolis force change caused by climber motion characteristics and a high ladder rope oscillation motion model caused by the climber motion characteristics, synchronously establishing a powermodel corresponding to the multi-climber motion characteristics, according to the high ladder rope oscillation motion model and the power model corresponding to the motion characteristics of the multiple climbers, establishing a wide-area high ladder system climber number and speed optimization model, determining optimization objectives and constraint conditions of the model, and solving the optimization model by taking the number and the speed of the climbers as optimization variables and combining the optimization target and the constraint condition. According to the method, the speed and the number of the climbers are taken as optimization variables, the influence of the atmospheric environment on the running speed is fully considered, and an excellent overall scheme of the high laddersystem can be obtained.
Description
technical field [0001] The invention belongs to the field of optimization control of a ladder system, in particular to a method for optimizing the number and speed of climbers in a wide-area ladder system. Background technique [0002] The sky ladder is a new type of space-entry transportation system that transports payloads from the earth's surface to space. Its principle is to connect the anchor point on the earth's surface with the space anchor above the geostationary orbit (GEO orbit) through a rope. Point connection, the payload is sent into the space through the load compartment (climber) running on the cable. The basic composition of the ladder system is as follows: figure 1 As shown, the overall ladder system is mainly composed of ladder ropes, earth surface nodes, GEO point platforms, apex anchors, climbers, and energy systems. [0003] During the movement of the climber along the ladder rope, due to the influence of the Coriolis force, the different climbing spee...
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IPC IPC(8): G06F30/20G06F30/15G06F119/14
CPCG06F30/20G06F30/15G06F2119/14
Inventor 刘丙利张烽焉宁汪小卫李扬高朝辉吴胜宝胡冬生唐琼郝宇星张恒浩童科伟庄方方张展智张霞
Owner CHINA ACAD OF LAUNCH VEHICLE TECH