Efficient dynamic modeling method for electrodynamic force rope derailment device
A dynamic modeling and electrodynamic technology, which is applied in the field of dynamic modeling to achieve strong versatility and reduce computational complexity.
Active Publication Date: 2022-01-14
BEIJING INSTITUTE OF TECHNOLOGYGY
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[0004] In order to solve the high-precision and high-efficiency dynamic modeling problem of the electric power rope, the object of the present invention is to provide a high-precision and high-efficiency dynamic modeling method of the electric power rope, which combines the Kane equation and multi-body dynamics recursive calculation The discrete electrodynamic rope model is established by using the method of multi-physics field coupling, and the calculation complexity of the recursive algorithm is linearly related to the degree of freedom of the electrodynamic rope system. The problem of increasing the amount of numerical simulation calculations caused by the increase of discrete units in the model, to achieve high-precision and high-efficiency dynamic modeling of electric power ropes
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[0080] In order to better illustrate the purpose and advantages of the present invention, the specific implementation and effects of the present invention will be further described in detail below in conjunction with examples and accompanying drawings.
[0081] Such as Figure 9 As shown, a high-precision and high-efficiency dynamic modeling method for an electric power rope disclosed in this embodiment, the specific implementation steps are as follows:
[0082] Step 1: Number the units and hinges of the system;
[0083] The motion of the electrodynamic rope system on the track is asfigure 1 As shown, the main star and sub-stars in the electrodynamic tether system are regarded as particles, and the conductive tethers are discretized into multiple rigid rod units, and the main star is recorded as unit 0, and the conductive tether unit close to the main star is 1, and then it increases to N, the child star is unit N+1, and the units are connected by spherical hinges, such as ...
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The invention discloses a high-precision and high-efficiency dynamics modeling method for an electric power rope, and belongs to the field of dynamics and control of spacecraft orbits and attitudes. The implementation method comprises the steps that in an electric power rope system, a primary star and a secondary star are regarded as mass points, and a conductive tether is dispersed into a plurality of rigid rod units, namely, a discrete body model formed by hinging a plurality of rigid rods is adopted; a discrete electrodynamic force rope model considering a multi-physical field coupling effect is established by combining a Kane equation and a multi-body dynamics recursive algorithm, and the characteristic that the calculation complexity of the recursive algorithm and the degree of freedom of an electrodynamic force rope system are in a linear relation is utilized, on the premise of ensuring that the precision is unchanged. the problem that the numerical simulation calculation amount is increased due to the increase of discrete units in the discrete electrodynamic force rope model is solved as much as possible, and high-precision and high-efficiency dynamic modeling of the electrodynamic force rope is achieved. The method and device are applied to the field of dynamics and control of spacecraft orbits and attitudes, and can solve engineering technical problems related to the spacecraft orbits and the attitudes.
Description
technical field [0001] The invention relates to a high-precision and high-efficiency dynamic modeling method of an electric power rope, relates to system attitude control and orbit transfer, and belongs to the field of dynamics and control of spacecraft orbit and attitude. Background technique [0002] In recent years, the amount of space debris in low-Earth orbit has shown an obvious upward trend. Space debris not only occupies limited orbital resources, but also poses a potential threat to spaceflight working in orbit and affects subsequent spaceflight activities. Therefore, space debris must be actively removed. Among many active cleaning technologies, electric power rope has attracted much attention due to its advantages of low fuel consumption and low cost. [0003] The electric power rope is a typical strongly nonlinear multi-field coupling system. With the deepening of relevant research, in order to more accurately describe the dynamic characteristics of the electric...
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IPC IPC(8): G06F30/20G06F17/16G06F119/14
CPCG06F30/20G06F17/16G06F2119/14
Inventor 张景瑞李夏临杨科莹李林澄
Owner BEIJING INSTITUTE OF TECHNOLOGYGY