| 弹性圆柱壳结构的有源结构声辐射控制研究 |
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| 引用本文： | 靳国永,刘小玲,刘志刚.弹性圆柱壳结构的有源结构声辐射控制研究[J].船舶与海洋工程学报,2011,10(1):88-97. |
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| 作者姓名： | 靳国永 刘小玲 刘志刚 |
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| 作者单位： | 靳国永,刘志刚,Tiejun Yang,Guoyong Jin,Zhigang Liu,Tiejun Yang(College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China);刘小玲,Xiaolin Liu(China Shipbuilding Information Center, Beijing 100192, China) |
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| 基金项目： | the National Natural Science Foundation of China，Research Fund for the Doctoral Program of Higher Education of China，the Natural Science Foundation of Heilongiang Province，Innovative Talents Fund of Harbin，Fundamental Research Fund of HEU |
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| 摘 要： | A numerical and experimental study was presented on active control of structurally radiated sound from an elastic cylindrical shell.An analytical model was developed for the active structural acoustic control (ASAC) of the cylindrical shell.Both global and local control strategies were considered.The optimal control forces corresponding to each control strategy were obtained by using the linear quadratic optimal control theory.Numerical simulations were performed to examine and analyze the control performance under different control strategies.The results show that global sound attenuation of the cylindrical shell at resonance frequencies can be achieved by using point force as the control input of the ASAC system.Better control performance can be obtained under the control strategy of minimization of the radiated sound power.However,control spillover may occur at off-resonance frequencies with the control strategy of structural kinetic energy minimization in terms of the radiated sound power.Considerable levels of global sound attenuation can also be achieved in the on-resonance cases with the local control strategy,i.e.,minimization of the mean-square velocity of finite discrete locations.An ASAC experiment using an FXLMS algorithm was implemented,agreement was observed between the numerical and experimental results,and successful attenuation of structural vibration and radiated sound was achieved.
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| 关 键 词： | cylindrical shell radiated sound power active structural acoustic control (ASAC) FXLMS algorithm |
Active control of structurally radiated sound from an elastic cylindrical shell |
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| Guoyong Jin,Xiaolin Liu,Zhigang Liu,Tiejun Yang.Active control of structurally radiated sound from an elastic cylindrical shell[J].Journal of Marine Science and Application,2011,10(1):88-97. |
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| Authors: | Guoyong Jin Xiaolin Liu Zhigang Liu Tiejun Yang |
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| Institution: | 1. College of Power and Energy Engineering, Harbin Engineering University, Harbin, 150001, China
2. China Shipbuilding Information Center, Beijing, 100192, China
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| Abstract: | A numerical and experimental study was presented on active control of structurally radiated sound from an elastic cylindrical
shell. An analytical model was developed for the active structural acoustic control (ASAC) of the cylindrical shell. Both
global and local control strategies were considered. The optimal control forces corresponding to each control strategy were
obtained by using the linear quadratic optimal control theory. Numerical simulations were performed to examine and analyze
the control performance under different control strategies. The results show that global sound attenuation of the cylindrical
shell at resonance frequencies can be achieved by using point force as the control input of the ASAC system. Better control
performance can be obtained under the control strategy of minimization of the radiated sound power. However, control spillover
may occur at off-resonance frequencies with the control strategy of structural kinetic energy minimization in terms of the
radiated sound power. Considerable levels of global sound attenuation can also be achieved in the on-resonance cases with
the local control strategy, i.e., minimization of the mean-square velocity of finite discrete locations. An ASAC experiment
using an FXLMS algorithm was implemented, agreement was observed between the numerical and experimental results, and successful
attenuation of structural vibration and radiated sound was achieved. |
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