复合作动器复合方式对平台主动隔振影响分析

陶 帅;白鸿柏;顾伟

振动与冲击 ›› 2011, Vol. 30 ›› Issue (8) : 253-257.

PDF(1580 KB)
PDF(1580 KB)
振动与冲击 ›› 2011, Vol. 30 ›› Issue (8) : 253-257.
论文

复合作动器复合方式对平台主动隔振影响分析

  • 陶 帅1; 白鸿柏2; 顾伟3
作者信息 +

Analysis on the effect of the composite piezoelectric actuator’s arrangement on the active micro-vibration isolation platform

  • Tao Shuai1; Bai Hongbai2; Gu wei3
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摘要

为实现微隔振平台在较宽频带内的主动控制,将一弹性体和第三代压电致动器相串联,设计了一种复合式压电致动器。将复合致动器应用到微隔振平台,并对其整体建模、控制仿真时发现:弹性体相对于作动器位置不同时,在不同的外扰下对控制力的影响不同。为此,设计了一个针对不同外扰对控制力影响的评价函数,通过不同位置对评价函数影响的仿真,结果表明:当隔振平台系统受直接干扰时,弹性体位置对控制力的影响较大;当平台受地基扰动时,弹性体位置对控制力影响不显著。所以,复合作动器的布置形式取决于外扰的类型,且在实验室环境中,两种布置要达到相同的隔振效果,弹性体在上布置所耗费的能量小于其在下布置时的状态。

Abstract

A type of composite piezoelectric actuator with an elastic solid and a piezoelectric connected is designed, which could control the active micro-vibration isolation platform in a wide frequency. When the composite actuator is used in the micro-vibration isolation platform, it is found that the relative position of elastic body and piezoelectric part would affect the control force when the platform falls under different kinds of external disturbance. So, an evaluation function of the control force is built to evaluate the differences caused by different relative positions when the platform has directly and ground disturbance. The simulation result shows that the relative position of elastic solid and piezoelectric part affects the control force indistinctively when the platform has ground disturbance only, but the effect is distinct when the disturbance input is direct disturbance only, which means that the composite piezoelectric actuator element’s relative position is decided by the disturbance, and if the two styles of arrangement in the platform would gain the same isolation effect under the circumstance of laboratory ,the energy’s consumption with the elastic solid above the piezoelectric is less than that below.

关键词

微隔振平台 / 压电致动器 / 弹性体

Key words

micro-vibration isolation plate / piezoelectric / actuator

引用本文

导出引用
陶 帅;白鸿柏;顾伟. 复合作动器复合方式对平台主动隔振影响分析[J]. 振动与冲击, 2011, 30(8): 253-257
Tao Shuai; Bai Hongbai; Gu wei. Analysis on the effect of the composite piezoelectric actuator’s arrangement on the active micro-vibration isolation platform[J]. Journal of Vibration and Shock, 2011, 30(8): 253-257

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