智能材料结构及在振动控制中的应用研究评述和展望

A Review and Prospect for Intelligent Materials/Structures and Their Applications in Vibration Control

概括介绍了智能结构的研究领域及在振动控制中的研究概况 ,对智能结构振动控制系统的建模、控制器设计、传感和作动元件以及智能结构制作、实验研究等方面的研究进展作了简要评述。分析了各相关研究所存在的问题和该项研究专题未来可能的发展趋势。

Intelligent materials/structures (IMS) have attracted much attention in recent years due to their multifunction, adaptability, low weight, and high economic efficiency. Over the last 20 years, much theoretical research on vibration/noise control, structural damage active control and static deformation control has been carried out. Especially, researches in system modeling, optimization, computer simulation, vibration control test of simple beam plate structures and so forth have almost come up to saturation. By contrast, there are few applications of IMS to practical engineering. The main reason probably is that it is still difficult to effectively integrate intelligent sensors/actuators, micro processors, related electronic elements/accessories and structure itself into a complete system. Another reason is that too many simplifications are made during system modeling and control algorithm formulating which does not completely comply with the actual situation. The future information processing in IMS should emphasize particularly on intelligent control theory (neural control and fuzzy control technique etc.) to slove a large amount of uncertain factors existing in practical structure under various working conditions and to promote the adaptability of IMS. At the same time, it is also very important to develop integrated manufacturing technology for IMS so that IMS system does not need conventional electronic instruments which is a large part of the existing IMS system. We believe that only after accomplishing these tasks, will the real integrated IMS appear which is suitable for practical engineering applications.