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针对智能桁架结构的振动抑制问题,研究如何设计自适应模糊主动振动控制器。结合模糊控制理论和传统的自适应控制理论,基于Lyapunov综合法,设计了一种稳定的直接型自适应模糊主动振动控制器。同时引入监督控制,把控制量分为自适应模糊控制量和监督控制量,监督控制的设计保证了系统状态量的有界性。最后,对一个平面16杆智能桁架结构进行了自适应模糊主动振动控制的仿真研究。结果表明:在结构参数或外部环境发生变化时,直接型自适应模糊主动振动控制器仍可以获得理想的控制效果,具有很好的鲁棒性。
Aimed at the problem of vibration suppression of intelligent truss structure, how to design adaptive fuzzy active vibration controller is studied. Combining with fuzzy control theory and traditional adaptive control theory, a kind of direct adaptive adaptive fuzzy active vibration controller is designed based on Lyapunov synthesis method. At the same time, the supervision and control are introduced, and the control variables are divided into adaptive fuzzy control variables and supervisory control variables. The design of supervisory control ensures the boundedness of the system state quantities. Finally, the simulation research of a planar 16-pole intelligent truss structure with adaptive fuzzy active vibration control is carried out. The results show that the direct adaptive fuzzy active vibration controller can still obtain the ideal control effect with good robustness when the structural parameters or the external environment change.