一种基于单向作动器的主动隔振误差传感器布置方案  

Eerror-sensor location scheme for active vibration isolation under the action of a SDOF actuator

作　　者：王春雨[1,2] 李彦 帅长庚[1,2] 张能 WANG Chunyu;LI Yan;SHUAI Changgeng;ZHANG Neng(Institute of Noise&Vibration,Naval University of Engineering,Wuhan 430033,China;National Key Laboratory on Ship Vibration&Noise,Wuhan 430033,China)

机构地区：[1]海军工程大学振动与噪声研究所,武汉430033 [2]船舶振动噪声重点实验室,武汉430033

出　　处：《振动与冲击》2020年第22期254-260,共7页Journal of Vibration and Shock

基　　金：重点实验室国拨经费装备预研基金(6142204190605)。

摘　　要：针对电磁气囊主被动隔振装置试验中出现的测点控制效果不一致、整体隔振效果欠佳问题,提出一种弹性结构基础的误差传感器优化布置方法,提高了单向作动器作用下的整体隔振效果。分析弹性支撑刚体基础隔振系统的振动传递特性,阐述了通过多隔振器支撑能够解决各测点振动控制效果不一致的问题。在弹性结构基础的振动控制中,以简支梁基础为例,将隔振器与简支梁的连接部分看作刚体结构,利用刚体基础隔振结论,设计了一种3个误差传感器对应一个隔振器的误差传感器布置方案,通过同时控制隔振器下方的3个误差测点处的振动来控制通过隔振器传递到基础的振动。对比实测结果表明提出的误差测点布置方案相比于原布置方案具有更好的隔振效果。The inconsistent control effect at different measuring points and the poor overall isolation effect of active and passive vibration isolation devices of electromagnetic airbags were studied.An optimal arrangement method for error sensors based on elastic structure was proposed to improve the overall vibration isolation effect under the action of a single degree of freedom(SDOF)actuator.The transmission characteristics of the vibration isolation system on a rigid foundation with elastic supports were analyzed,and the inconsistency of the vibration control effect at different measuring points was solved by using multiple vibration isolators.Then for the vibration control of the elastic structure foundation,taking the simple supported beam foundation as an example,the connection part of the vibration isolator and the simple supported beam was regarded as a rigid body structure.Using the conclusion of the rigid body foundation vibration isolation presented above,a scheme for the error sensor arrangement of three error sensors corresponding to one vibration isolator was designed.The vibration transmitted to the foundation through the isolator was controlled by controlling the vibration at three error measuring points below the isolator.The results show that the proposed scheme has better vibration isolation effect than the original scheme.

关 键 词：主动隔振 弹性基础 误差测点布置 

分 类 号：TB535[理学—物理]