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首页> 外文会议>Smart Structures and Integrated Systems Mar 3-6, 2003 San Diego, California, USA >Vibration Control of a Gossamer Toroidal Structure Using Smart Material Actuators and Sensors
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Vibration Control of a Gossamer Toroidal Structure Using Smart Material Actuators and Sensors

机译：使用智能材料驱动器和传感器的蛛丝环形结构的振动控制

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摘要

Gossamer or inflatable structures have been a subject of renewed interest for space applications because of their lightweight, on-orbit deployability, and minimal stowage volume. For these structures to be effective, their vibration must be controlled while maintaining the low weight and the foldability criteria. Piezoelectric materials have become strong candidates for actuator and sensor applications in the active vibration control of such structures due to their lightweight, conformability to the host structure, and distributed nature. In this study, vibration suppression of an inflated toroidal structure using piezoelectric actuators and sensors has been attempted. First, following the Sanders' shell theory, the governing equations of motion of a shell under pressure in the presence of piezoelectric patches have been presented, and the actuator/sensor equations are obtained. A sliding mode controller and a sliding mode observer are designed to suppress the vibration of the inflated toroidal structure using Macro-Fiber Composite (MFC~(TM)) actuators and Polyvinylidene Fluoride (PVDF) sensors. The numerical simulations show that the piezoelectric actuators and sensors are suitable for vibration suppression of an inflatable structure. The robustness properties of the controller and observer against the parameter uncertainty and disturbances are also studied.
机译：游丝或充气结构由于其轻巧，在轨部署能力和最小的积载体积，已成为空间应用的新话题。为了使这些结构有效，必须在保持低重量和可折叠性标准的同时控制其振动。压电材料由于其重量轻，对主体结构的适应性和分布特性，已成为此类结构的主动振动控制中执行器和传感器应用的强力候选材料。在这项研究中，已经尝试使用压电致动器和传感器来抑制环形环形结构的振动。首先，根据桑德斯的壳理论，提出了在存在压电片的情况下壳在压力下的运动控制方程，并获得了执行器/传感器方程。滑模控制器和滑模观察器被设计为使用Macro-Fiber Composite（MFC〜TM）执行器和聚偏二氟乙烯（PVDF）传感器来抑制膨胀的环形结构的振动。数值模拟表明，压电致动器和传感器适用于抑制充气结构的振动。还研究了控制器和观测器针对参数不确定性和干扰的鲁棒性。

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