Design of an ultra-precision vibration isolation system by imitating the special organic texture of woodpecker's brain
Design of an ultra-precision vibration isolation system by imitating the special organic texture of woodpecker's brain
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DOI：
10.1109/ramech.2004.1438966
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发表时间：
2004-12
期刊：
影响因子：
--
通讯作者：
Mei Deqing;Yang Keji;Chen Zichen
中科院分区：
文献类型：
--
作者：
Mei Deqing;Yang Keji;Chen Zichen
本文通过模仿啄木鸟大脑的特殊组织结构，建立了超精密隔振系统的仿生结构模型。隔振系统主要由超磁致伸缩执行器、空气弹簧、底座和橡胶层组成。空气弹簧用于减少高频振动，超磁致伸缩执行器用于减少低频或超低频振动。为了减小线圈温升引起的热变形，研制了一种用于超磁致伸缩执行器的恒温冷却系统。针对复杂的振动环境和隔振系统的自非线性，设计了一种具有两个调节因子的二维模糊主动控制系统。实验结果表明，该仿生隔振系统具有良好的抗楼层扰动性能。可应用于超精密测量和制造设备的隔振系统。
In this paper, a bionic structure model of ultra-precision vibration isolation system is presented by imitating the special organic texture of woodpecker's brain. The vibration isolation system mainly consists of giant magnetostrictive actuators, air-springs, a pedestal and a rubber layer. The air-springs are used to reduce high frequency vibrations, and the giant magnetostrictive actuators are used to reduce low or ultra-low frequency vibrations. In order to reduce thermal distortion caused by temperature rise of coil, a constant temperature cooling system is developed for giant magnetostrictive actuator. In consideration of complex vibration environment and self-nonlinearity of vibration isolation system, a two dimensional fuzzy active control system with two regulation factors is designed. The experiment results show that the bionic vibration isolation system has good performance against floor disturbances. It can be applied to the vibration isolation system of the ultra-precision measuring and manufacturing devices.