磁悬浮-气囊主被动混合隔振器力学特性及主动隔振实验研究
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摘要
低频线谱的有源控制是减振降噪中的重要技术,在对磁悬浮-气囊混合隔振器理论研究与有限元仿真的基础上,设计了专门针对混合隔振器的测力工装夹具,进一步对混合隔振器进行了主动控制力实验研究,得出混合隔振器输出力特性。在实验的基础上针对机械线谱振动,提出一种基于力为误差信号的主动控制方法,并进行实验验证。实验结果表明:在以力为误差信号下,对主被动混合隔振平台传递力的低频线谱控制效果好,并可显著降低主动控制实验平台的低频线谱振动。
Active control of low frequency line spectrum is an important technique for vibration and noise reduction. Based on theoretical study and finite element analysis for a maglev-air bag active-passive hybrid vibration isolator,special force-measuring fixture for the isolator was designed to conduct active control tests of the isolator and obtain its output force characteristics. Then,aiming at mechanical line spectrum vibrations,an active control method taking force as error signal was proposed and it was verified with tests. The test results showed that under the condition of taking force as error signal,the low frequency line spectrum control effect on transmitted force of the active-passive vibration isolation platform is good and the active control test platform's low frequency line spectrum vibration can be reduced significantly.
Active control of low frequency line spectrum is an important technique for vibration and noise reduction. Based on theoretical study and finite element analysis for a maglev-air bag active-passive hybrid vibration isolator,special force-measuring fixture for the isolator was designed to conduct active control tests of the isolator and obtain its output force characteristics. Then,aiming at mechanical line spectrum vibrations,an active control method taking force as error signal was proposed and it was verified with tests. The test results showed that under the condition of taking force as error signal,the low frequency line spectrum control effect on transmitted force of the active-passive vibration isolation platform is good and the active control test platform's low frequency line spectrum vibration can be reduced significantly.
引文
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[2]朱石坚,楼京俊,何其伟,等.振动理论与隔振技术[M].北京:国防工业出版社,2006.
[3]WIDROW B,BILELLO M.Adaptive inverse control[M].Upper Saddle River,NJ:Prentice-Hall,1996.
[4]ELLIOTT S J.Signal processing for active control[M].San Diego,CA:Academic,2001.
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[6]FULLER C R,ELLIOT S J,NELSON P A.Active control of vibration[M].San Diego,CA:Academic Press,1996.
[7]范威.主动隔振器及自适应控制方法研究[D].上海:上海交通大学,2008.
[8]陈绍青.电磁式主被动复合隔振器关键技术研究[D].合肥:中国科学技术大学,2012.
[9]张攀.船用往复式机械的振动主动控制技术研究[D].哈尔滨:哈尔滨工程大学,2013.
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[11]余锡文,刘德志,王东,等.混合隔振系统中电磁作动器的优化设计[J].海军工程大学学报,2010,22(6):1-4.YU Xiwen,LIU Dezhi,WANG Dong,et al.Optimal design of electromagnetic actuator in hybrid vibration isolation system[J].Journal of Naval University of Engineering,2010,22(6):1-4.
[12]李彦,何琳,帅长庚,等.船舶机械磁悬浮气囊混合隔振技术[J].声学学报,2015,40(5):751-760.LI Yan,HE Lin,SHUAI Changgeng,et al.Vibration isolation technology for ship machinery using electromagnetic actuator and air spring[J].Acta Acustica,2015,40(5):751-760.