Intelligent active damping for vibration control

无论是在地面还是空间环境中，工程结构的振动通常是不希望的，因为它们破坏了结构的性能，并可能导致结构故障。抑制结构振动的传统方法是在结构上覆盖一种具有耗散能量能力的聚合物（橡胶材料）。振动抑制程度的进一步改进发生在20世纪50年代后期，当时聚合物被夹在结构和另一层称为约束层的材料之间。这些技术工作的手段通常分别被称为被动振动阻尼（PD）和被动约束层振动阻尼（PCLD）。

Vibrations in engineering structures in either a terrestrial or a space environment are generally undesirable because they undermine the performance of the structure and could result in structural failure. The traditional method of suppressing structural vibrations is by overlaying the structure with a polymer (rubbery material) that has the ability to dissipate energy. Further improvements in the degree of vibration suppression occurred in the late 1950s when the polymer was sandwiched between the structure and another layer of material called the constraining layer. The means by which these techniques work are generally referred to as passive vibration damping (PD) and passive constrained layer vibration damping (PCLD), respectively.