發(fā)布時(shí)間：2018-10-20 17:05

【摘要】：耦合模態(tài)空間控制方法可以對被控系統(tǒng)的固有頻率、阻尼比和模態(tài)振型進(jìn)行配置。針對結(jié)構(gòu)低頻振動(dòng)噪聲的主動(dòng)控制問題,本文采用耦合模態(tài)空間控制方法將結(jié)構(gòu)的振動(dòng)模態(tài)控制為零體積速度模態(tài)。以矩形簡支板為例進(jìn)行了結(jié)構(gòu)聲輻射主動(dòng)控制仿真,將板的第1階和第4階振動(dòng)模態(tài)控制為零體積速度模態(tài),結(jié)果表明,簡支板的低頻聲輻射得到了有效控制。本文提出的結(jié)構(gòu)聲主動(dòng)控制方法可以有效控制結(jié)構(gòu)低頻振動(dòng)噪聲,同時(shí)具有物理意義清楚、控制過程簡單、控制率的設(shè)計(jì)與激勵(lì)力大小和位置無關(guān)等特點(diǎn)。
[Abstract]:The coupled modal space control method can configure the natural frequency, damping ratio and modal mode of the controlled system. To solve the active control problem of low frequency vibration and noise of structure, the coupled modal space control method is used to control the vibration mode of the structure into zero volume velocity mode. Taking the rectangular simply supported plate as an example, the active control of structural acoustic radiation is simulated. The first and fourth order vibration modes of the plate are controlled to zero volume velocity mode. The results show that the low frequency acoustic radiation of the simply supported plate is effectively controlled. The structural acoustic active control method proposed in this paper can effectively control the low frequency vibration noise of the structure. At the same time, it has the characteristics of clear physical meaning, simple control process, and the design of control rate is independent of the magnitude and position of the excitation force.
【作者單位】： 大連理工大學(xué)工業(yè)裝備結(jié)構(gòu)分析國家重點(diǎn)實(shí)驗(yàn)室;大連理工大學(xué)船舶工程學(xué)院;
【分類號】：TB535

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本文編號：2283811