Multi-mode optimal fuzzy active vibration control of composite beams laminated with photostrictive actuators

Multi-mode optimal fuzzy active vibration control of composite beams laminated with photostrictive actuators
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光致致动器层合复合梁的多模态最优模糊主动振动控制

DOI:
10.1016/j.cja.2018.12.030
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发表时间:
2019-06
影响因子:
5.7
通讯作者:
He Rongbo
He Rongbo
中科院分区:
工程技术2区
文献类型:
--
作者:
Jia Mancang;Zheng Shijie;He Rongbo

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本文首先建立了具有光致伸缩执行器的复合材料梁的多场耦合有限元模型。在最优控制与模糊控制相结合的基础上,提出了一种最优模糊主动控制算法。该方法为解决光致伸缩执行器的线性系统控制方法与非线性驱动特性之间的矛盾开辟了新的途径。首先通过最优控制得到抑制光电叠层梁多模态振动的期望控制,然后利用模糊控制逼近光致伸缩执行器产生的期望机械应变。从而实现了梁的多模式振动控制。在最优模糊控制器的设计过程中,模糊控制的设计是独立于最优控制的。仿真结果表明,所提出的控制方法能有效地实现光电叠层梁的多模态振动控制,且最优模糊控制的控制效果优于最优状态反馈控制。
Firstly, a multi-field coupling finite element formulation of composited beam laminated with the photostrictive actuators is developed in this paper. Moreover, an optimal fuzzy active control algorithm is also proposed on the basis of the combination of optimal control and fuzzy one. This method opens a new avenue to resolve the contradiction between the linear system control method and nonlinear actuating characteristics of photostrictive actuators. The desired control for suppressing multi-modal vibration of photoelectric laminated beam is firstly obtained through optimal control and then the fuzzy control is used to approach the desired mechanical strain induced by photostrictive actuators. Thus, the multi-mode vibration control of beam is realized. In the design process of optimal fuzzy controller, the design of fuzzy control is independent of optimal control. The simulation results demonstrate that the proposed control method can effectively realize multi-modal vibration control of photoelectric laminated beams, and the control effect of optimal fuzzy control is better than that of optimal state feedback control.
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