关键词: 振动与波, 虚拟力, 分部优化正则化, 病态问题, 实验

Abstract:

In the research of ship vibration transfer path analysis and structure response monitoring, the characteristics of machine force are always needed. As the inherent complexity of the machine and the structure onto which it is mounted, the real-time measurement becomes very difficult. On the basis of inherent connection between structural response and exciting force, the real exciting forces can be instead by pseudo-forces, which exactly reproduces the response caused by the noise generating mechanism inside the source. In this paper a regularization technique based on partial optimization is introduced into the pseudo-force model to solve the ill-conditioned problem. An experiment was carried out on a pump mounted on ship, and the results showed that the structural response reconstruction errors with partial regularization method was effectively reduced.