【摘要】 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。更多还原

【Abstract】 The design of an adaptive fuzzy active vibration controller was analyzed to suppress the intelligent truss structural vibrations with a stable direct adaptive fuzzy active vibration controller designed using a Lyapunov synthesis method,fuzzy control theory,and classical adaptive control theory.Supervisory control was used to maintain the system state boundedness,with the control output being the sum of adaptive fuzzy control and supervisory control.The direct adaptive fuzzy active vibration controller was used to simulate the vibration control of a 16-bar planar intelligent truss structure to show that the directive adaptive fuzzy active vibration controller is effective and robust when large uncertainties exist or unknown variations in plant parameters and structures occur.更多还原