Study on impact loading identification of a complicated structure

摘要

In this paper, the theoretic model of impact loading identification to act on a running automatic machine is built up first. A set of the experiment devices is designed. It is easy to test in the laboratory and the locale. To be applicable to various structures, with which it is able to obtain its dynamic characteristic and to respond data of the system accurately. In order to measure more vibration signals synchronously and automatically, the testing system is designed and set up. It is also examined through the simulating loading testing. In order to improve the accuracy of the loading identification, a series of techniques to reduce outside noise interference are put forward. The responded signals to the automatic machine in physically work are tested and analyzed. It is made use of frequency respond function of structure excited simulating loading, to complete loading identification on the system in the actual work. Finally, contrasted with traditional theoretic compute and the tested method, the identification technique is perfected.