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提出了一个利用实测传递函数辨识结构结合部参数的一般公式,给出了相应的辨识算法。由于该方法对动态测试尤特殊要求,故扩大了适用范围,方便了工程应用。在辨识算法上,避免了对实测传递函数矩阵的反复直接求逆运算,降低了辨识参数对测试误差的灵敏度,提高了辨识精度。实例验证该方法具有良好的辨识精度。
A general formula for identifying the parameters of structural joints using measured transfer function is proposed and the corresponding identification algorithm is given. Due to the special requirements of the dynamic testing method, it expands the scope of application and facilitates the engineering application. The identification algorithm avoids the repeated direct inversion of the measured transfer function matrix, reduces the sensitivity of the identification parameters to the test error and improves the identification accuracy. The example verifies that this method has good recognition accuracy.