Dynamic characteristics of collaborated system mainly include natural vibration frequency and principal mode, which is the base and precondition of dynamic analysis for collaborated system.

协作体系的动力特性主要包括体系的自振频率和主振型，它是协作体系结构动力分析的基础和前提。

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The natural frequency, damping ratio and mode shape of a multi-degree-of-freedom system are analyzed and the identified results are in good agreement with the theoretical values.

并针对一多自由度系统具体论述了固有频率、阻尼比和振型的识别方法，识别结果与理论结果吻合较好。

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The results showed that the mount spacing can be varied to adjust the natural frequency of the rotational mode.

结果说明：改变隔振元件的间距能调整扭转振动的固有频率的大小。

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