简要介绍多点正弦激励系统的工作原理。结合万安导墙模型动态特性试验,研究了激振器的 安装和模态测试方法。对容易出现的不利因素的影响,提出了相应的解决方法。并在模型试 验中较准确地找出了结构的固有频率、振型、阻尼等模态参数。

The working principle of multipoint sine excitation system is simply introduce d.Through the dynamic property model test for Wan'an Project's guide wall,the in stallation of exciter and test method for oscillating mode are studied.The rela tive solvable methods on easily appearing effects of disadvantageous factors are proposed.And the modal parameters of self oscillation frequency,vibration mode and damp are precisely found. 