国外电子测量技术
國外電子測量技術
국외전자측량기술
Foreign Electronic Measurement Technology
2015年
10期
17-21
,共5页
动力反共振隔振%振动主动控制%智能结构%爬山法%LabVIEW仿真
動力反共振隔振%振動主動控製%智能結構%爬山法%LabVIEW倣真
동력반공진격진%진동주동공제%지능결구%파산법%LabVIEW방진
active DAVI%hill climbing method%active vibration control%system simulation%smart structure
动力反共振隔振是一种非常有效的减隔振方法。它具有静态刚度大,适合低频隔振,隔振效率与主质量块无关,反共振点隔振效率高等突出优点。然而,当外激励频率偏离反共振频率时,被动式动力反共振隔振系统不能实时调节自身结构以适应外界环境的变化,从而导致隔振效率的降低。针对前人设计的动力反共振隔振装置,提出了一种基于爬山法的主动控制算法,能够根据外界环境的变化实时的调节装置的反共振频率,有效地拓宽了隔振装置的可用频带。在此理论基础上,基于LabVIEW平台对所提出的控制算法进行了仿真研究,仿真结果表明了该算法的有效性。
動力反共振隔振是一種非常有效的減隔振方法。它具有靜態剛度大,適閤低頻隔振,隔振效率與主質量塊無關,反共振點隔振效率高等突齣優點。然而,噹外激勵頻率偏離反共振頻率時,被動式動力反共振隔振繫統不能實時調節自身結構以適應外界環境的變化,從而導緻隔振效率的降低。針對前人設計的動力反共振隔振裝置,提齣瞭一種基于爬山法的主動控製算法,能夠根據外界環境的變化實時的調節裝置的反共振頻率,有效地拓寬瞭隔振裝置的可用頻帶。在此理論基礎上,基于LabVIEW平檯對所提齣的控製算法進行瞭倣真研究,倣真結果錶明瞭該算法的有效性。
동력반공진격진시일충비상유효적감격진방법。타구유정태강도대,괄합저빈격진,격진효솔여주질량괴무관,반공진점격진효솔고등돌출우점。연이,당외격려빈솔편리반공진빈솔시,피동식동력반공진격진계통불능실시조절자신결구이괄응외계배경적변화,종이도치격진효솔적강저。침대전인설계적동력반공진격진장치,제출료일충기우파산법적주동공제산법,능구근거외계배경적변화실시적조절장치적반공진빈솔,유효지탁관료격진장치적가용빈대。재차이론기출상,기우LabVIEW평태대소제출적공제산법진행료방진연구,방진결과표명료해산법적유효성。
Dynamic anti‐vibration isolators (DAVI ) has been effectively used to remove undesirable oscillations from mechanical structures .The DAVI method has advantages such as large static stiffness ,remarkable vibration isolation ,and being efficiency in low‐frequency vibration damping .However ,when the frequency of the external excitation varies ,traditional passive DAVI can’t remain high efficiency all the time .Aimed at solving this problem ,this passage proposed an active DAVI method based on the hill climbing algorithm ,w hich tunes the system’s anti‐resonance frequency dynamically by moving a small mass according to the online‐measured force transmissibility The paper first introduces the tunable DAVI system and the control theory .Then , simulations are conducted using LabVIEW and the proposed theory is verified .