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发表于 2005-4-11 01:20:40
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来自 美国
Re:(3分题)振动与噪声的解决方案
The solutions to the acoustics and vibration problems are generally classified into two big category: Passive control and active control
The basic idea behind passive control methods is to change the system properties, such as mass, damping or stiffness. see above for detailed approaches.
For active control, it is achived by adding another force or noise to cancel the original source or response. This category involves with control system design. Essentially, it is a regulation problem trying to keep the output to a preset value, 0 for vibration suppression.
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