柔性结构的模糊主动振动控制研究

针对柔性结构在不同激振信号下的振动抑制问题，研究了如何应用模糊控制理论实现柔性结构的主动控制，提出了一种基于连续模糊判决函数的模糊ＰＤ主动振动控制方法，对悬臂梁分别在瞬态、正弦及随机激振下的模糊ＰＤ主动振动控制进行了仿真研究。结果表明：模糊ＰＤ控制对上述三种激振信号的振动均有明显的抑制作用。由于模糊ＰＤ主动振动控制对结构的不依赖性，该方法对难以建模的大型柔性结构的主动振动控制具有实际意义。

Research on Fuzzy Active Vibration Control of Flexible Structure

In this paper,we discuss how to realize active control by means of fuzzy control theory for a class of flexible structure vibrations that are driven by transit, periodic and random excitations. A PD fuzzy active control method based on continuous fuzzy judging function is presented. To show the effectiveness of the method, the simulation study for vibration suppression of a cantilever beam is carried out. The results show that the PD fuzzy active control method has remarkable effect on suppressing structure vibrations, excited under the above three excitations , the method has importance for large flexible structure of which the model is difficult to obtain.