论文部分内容阅读
讨论了利用电动力缆绳使近地轨道上废弃卫星离轨的基本原理及优点,通过分析电动力缆绳的受力和运动方式,建立电动力缆绳系统的绳索模型,利用虚功原理推导出电动力缆绳自由振动的二维偏微分方程,使用有限差分法离散电动力缆绳振动方程并求其数值解,并用Matlab编写程序进行数值仿真。仿真表明:该文建立的绳索2D动力学模型可以大致反映出电动力缆绳在离轨过程中的振动特性,横向振动的幅值远大于纵向振动的幅值,电动力缆绳的主要振动形式是横向振动。
The basic principles and advantages of using the electric power cable to derail the abandoned satellite in the near earth orbit are discussed. By analyzing the force and movement mode of the electric power cable, the rope model of the electric power cable system is established. The virtual power principle is used to deduce the electric force The two-dimensional partial differential equations of cable free vibration are discretized by the finite difference method and their numerical solutions are obtained. The program is simulated by Matlab. The simulation results show that the 2D dynamic model established in this article can roughly reflect the vibration characteristics of the power cable during its derailment. The amplitude of the transverse vibration is much larger than the amplitude of the longitudinal vibration. The main vibration form of the power cable is horizontal vibration.