论文部分内容阅读
建立连续绳系卫星系统的离散的可变自由度有限维动力学模型,描述其长时间空间大范围运动.绳系卫星系统为复杂的非线性动力学系统.考虑了系绳的黏弹性、分布质量和空间位形,使得建立的改进珠式模型能够细致地描述系绳的纵横向振动.根据绳索只能受拉而不能抗压的特性引入了系绳单元的松弛模型,准确反映系绳真实受力情况.研究了系统自由度改变的实现方法,通过数值积分计算得到了绳系卫星系统释放、收拢和保持阶段的长时间历程的动力学响应,计算结果是收敛的.仿真结果印证了稳定平衡位置在绳系系统动力学中的重要特性.
The discrete variable-dimensional finite-dimensional dynamic model of variable-dimensional finite-dimensional system of continuous satellite system is established to describe the long-range and long-range dynamic motion of the satellite system. The tethered satellite system is a complex nonlinear dynamic system. Considering the viscoelasticity of the tether, Quality and spatial configuration so that the improved bead model can describe the longitudinal and transverse vibrations of the tether in detail.According to the characteristics that the tether can only be tensioned and not compressive, the relaxation model of the tether unit is introduced to accurately reflect the true tether The paper studies the realization method of the change of the degree of freedom of the system, and obtains the dynamic response of the long-distance course of the releasing, holding-up and holding stages of the tethered satellite system through numerical integral calculation, and the calculation result is convergent. The simulation results confirm the stability The important characteristic of the balance position in the dynamics of a rope system.