Receptance Method in Active Vibration Control
Receptance Method in Active Vibration Control
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DOI：
10.2514/1.24349
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发表时间：
2006-05
期刊：
影响因子：
2.5
通讯作者：
Y. Ram;J. Mottershead
中科院分区：
文献类型：
--
作者：
Y. Ram;J. Mottershead
极点/零点分配问题的解决使用的方法的基础上测得的接收。该方法在被动结构修改中是众所周知的，在主动振动控制中还没有使用过。许多显着的优点，声称在传统的状态空间的方法，使用的质量，阻尼和刚度矩阵形成，例如，由有限元。事实上，由于该方法仅基于测量的振动数据，因此不需要评估或知道M、C和K矩阵。它表明，所有的极点可以被分配积极的秩1修改系统的动态刚度矩阵的等效。零点的分配在振动抑制中具有特殊的意义，因为当在坐标q处以容抗Hnn的零点的频率施加正弦激励时，坐标p处的振动响应完全消失。可以通过在相同频率处分配零点来消除H pq的极点。
The pole/zero assignment problem is addressed using a method based on measured receptances. The approach, which is well known in passive structural modification, has not been used before in active vibration control. A number of significant advantages are claimed over the conventional state-space approach that uses the mass, damping, and stiffness matrices formed, for example, by finite elements. In fact, because the method is based solely upon measured vibration data, there is no need to evaluate or to know the M, C, and K matrices. It is demonstrated that all the poles may be assigned actively by the equivalent of a rank-1 modification to the dynamic stiffness matrix of the system. The assignment of zeros has a special significance in vibration suppression, because the vibration response at coordinatep vanishes completely when sinusoidal excitation is applied at coordinate q at the frequency of a zero of receptance H nn . A pole ofH pq may be eliminated by assigning a zero at the same frequency.