本文關(guān)鍵詞：基于振動及能量耗散的軸向繩移系統(tǒng)邊界阻尼控制　出處：《合肥工業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 軸向繩移系統(tǒng) 振動控制 固有頻率 邊界阻尼 能量耗散

【摘要】：升降電梯,索道和傳送帶等常見工程設(shè)備的橫向振動問題嚴(yán)重影響實(shí)際工程中的使用效果和安全性,這些工程設(shè)備的物理模型均可簡化為軸向繩移系統(tǒng)。因此,對軸向繩移系統(tǒng)橫向振動問題的研究就顯得十分必要。本文以軸向繩移系統(tǒng)為研究對象,首先給出了軸向繩移系統(tǒng)的簡化力學(xué)模型,利用哈密頓原理建立系統(tǒng)動力學(xué)方程。其次結(jié)合有限元思想,提出繩移系統(tǒng)的橫向位移響應(yīng)及振動能量兩種計算方法。接著基于傳播波在繩系中反射的振動周期和固有振型規(guī)律,研究軸向繩移系統(tǒng)的固有頻率公式,對比分析定長度和變長度兩種繩移系統(tǒng)固有頻率的差異,探討張緊力和軸向移動速度的變化對繩移系統(tǒng)固有頻率的影響。最后通過在系統(tǒng)邊界處安裝阻尼裝置,研究系統(tǒng)橫向振動的邊界阻尼控制。基于繩移系統(tǒng)的邊界力平衡方程和能量方程,研究反射波與入射波的幅值比值和能量比值關(guān)系,建立控制函數(shù),確定邊界阻尼系數(shù)范圍以及阻尼系數(shù)最優(yōu)值,達(dá)到繩移系統(tǒng)的橫向振動控制目的。以上研究為工程軸向繩移系統(tǒng)設(shè)備的設(shè)計及分析提供理論基礎(chǔ)。
[Abstract]:Elevator, cableway and belt transverse vibration problem of common engineering equipment use effect and safety in practical engineering is serious, can the physical model of engineering equipment is simplified as the rope axial shifting system. Therefore, it is necessary to shift the rope axial transverse vibration problem of system research. In this paper, the axial displacement of rope system as the research object, firstly gives a simplified mechanical model of axial shift rope system, establish the system dynamic equation by Hamilton principle. Secondly combined with finite element method, the rope shifting system transverse displacement response and vibration energy of two kinds of calculation methods. Then the vibration period and the vibration type propagation law of wave reflection on the rope system based on and the natural frequency formula of axial shift rope system, comparative analysis of differences in fixed length and variable length of two rope shift of system frequency of tension and axial movement speed The effect of change on the rope shift system natural frequency. Finally, through the installation of damping device in the system boundary, boundary damping control of transverse vibration of the system. The force equilibrium equation and energy equation of the boundary rope shift system based on the study of reflection wave and incident wave amplitude ratio and energy ratio, establish control function, determine the boundary damping coefficient range and damping coefficient of the optimal value, to achieve the purpose of transverse vibration of rope shifting system design and analysis of control. To provide equipment for the axial shifting system engineering theory. The above research rope

【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TH113.1

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