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运用模态分离的概念,通过求自由振动位移响应的对数衰减率而得到转子轴承系统的最低一、二阶模态的模态阻尼,亦称系统阻尼。这种测试技术已成功地用于不同类型轴承支承下的转子轴承系统的稳定性研究。
By using the concept of modal separation, the modal damping of the lowest first and second order modes of the rotor bearing system is also obtained by obtaining the logarithmic decrement of free vibration displacement response, also known as system damping. This test technique has been successfully used to study the stability of rotor bearing systems supported by different types of bearings.