摘要
从空间站大型伸展机构的运动特点和系统动力学方程出发 ,着重分析了该系统的稳定性判据。这一问题又可分为五个方面 :姿态 -伸展 -振动耦合系统的分析方法 ,复杂大系统的分解集结方法 ,时滞系统和滞后系统的稳定性问题 ,Stick- slip运动对系统稳定性的影响 ,非线性非定常系统稳定性的一般解。其中还对接触、摩擦、碰撞问题 ,变拓扑系统 ,非光滑动力学系统等进行了专门的研究 ,分析了 L yapunov指数方法在这些特殊系统中的适用性。本文对空间站大型伸展机构的稳定性问题进行了较全面的分析 ,指出了目前在处理这类复杂大系统时存在的一些难点问题 。
The stability criteria are investigated based on the motion characteristics and dynamic equations of the large deployable structures in space station (LDSSS).These problems can be divided into five aspects:approach for systems with coupling attitude,deployment and vibration motion,decompose and assemble method for complex large systems,stability of time delag system and hysteretic system,stick slip stability,general stability solution for nonlinear nonstationary system.In these analyses,contact friction and impact problems,variable topologies,non smooth dynamical systems have been studied; especially,the Lyapunov exponent method in these systems has been discussed.Finally,the bifurcation and chaos,which are interrelated to the motion stability,also have been discussed.On the whole,this article gives an overview of the stability analysis of LDSSS,and points out the bottleneck problems in dealing with the complex large systems.This analysis can be used as theoretical support for the design and research of LDSSS.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2002年第6期98-102,共5页
Journal of Astronautics
基金
国家 8 63高技术项目资助
关键词
空间站
伸展机构
运动稳定性
变拓扑
非光滑动力学系统
Large deployable structure
Stability criterion
Nonlinear
Variable topology
Non smooth dynamical system
