虚伪阻尼因子法在梁振动主动控制中的应用

本文研究了弹性梁在移动载荷作用下振动的主动控制,根据振动系统的特点提出了虚伪阻尼因子法.使用此方法可以方便求得黎卡提方程的初始迭代阵,以它进行迭代能保证计算稳定和快速收敛.文中还进一步讨论了主动控制的机理,计算了控制系统的响应,结果表明主动控制系统的响应优于被动控制.

THE PSEUDO-DAMPING FACTORS USED FOR THE ACTIVE CONTROL OF A BEAM VIBRATION

The active oontrol of an elastic beam under a moving load is studied in this paper. A pseudo-damping method is suggested according to the characteristic of a vibration system. By using the method, the initial matrix of the algebraic Riccati eguation for iteration computation can be found easily. This method also guarantees the computation to be stable and fast convergent. Furthermore, the paper discussed the mechanism of the active oontrol system and computed responses of systems. The results showed that the response of a aotive one is superiorer to a passive system.