【摘要】 阐明了主动结构的若干问题 ,并归纳了主动结构动力学的基本问题 ,以线性主动结构为例 ,给出了主动结构的构型及数学建摸。以车辆悬挂系统为实例 ,对车辆结构做了主动分析 ,描述了主动悬挂是通过合理地控制与调节输入悬挂系统能量来抵消来自地面的随机激扰能 ,从而可以克服传统悬挂中的矛盾 ,得到良好的减振性能更多还原

【Abstract】 Some basic concepts about the active structures are firstly explained in this paper, and the main subjects to study in the field of active structure dynamics are synthesized. For the linear active structures, the configuration and mathematic model are given. To active suspensions for railway vehicles, its active analysis has been done. The governmental equation with three degree of freedom is given and equivalent to a canonical control problem. By the solution of the control problem, the optimum damping can be chosen and semi active damping is set up. The systems of active suspensions are used to resist the random excited energy from ground. The input energy of suspension system is rationally controlled and adjusted so that they can correct the contrary in suspension and give cushioning ability very well.更多还原