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在飞机地面振动试验中,激振力矢量的优化直接影响模态识别结果的精度。本文主要介绍了在飞机地面振动试验中,激振力矢量(包括激振力位置、大小及方向)的优化技术,并在具有密集模态的飞机模型地面振动试验中进行了应用,使试验的效率和精度得到了很大的提高,验证了激振力优化技术的可行性,具有一定的工程应用价值。
In the plane ground vibration test, the optimization of excitation force vector directly affects the accuracy of modal identification results. In this paper, the optimization technique of the excitation force vector (including the position, size and direction of the exciting force) in the ground vibration test of the aircraft is introduced and applied in the ground vibration test of the airplane model with intensive modalities, Efficiency and accuracy have been greatly improved to verify the feasibility of exciting force optimization technology, with some engineering application value.