随机减量技术的主要优点是，它只要求测量动力响应而不要求测量引起该响应的随机激振。
The major advantage of the Randomdec is that it requires only measurements of the dynamic response and not the random excitation causing the response.
应用随机减量技术对响应信息进行处理，相应于结构的每一振型可得到一条独特的随机衰减曲线，该曲线代表结构自由振动响应。
Processing the response signals by using the random decrement technique, a unique corresponding to each mode is obtained, which represents a free vibration response of the structure.
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