| Vibration is ubiquitous in the dynamical system; we can say that vibration ubiquitous in actual projects. Permanent magnet AC servo Precision drive system is a typical electromechanical system with openness, flexibility, reliability and high accuracy. It acts as a mechanical-electrical integration of the experimental platform to meet the needs of modern motion control technology research and experimental needs. When specific functions are fulfilled in the permanent magnet AC servo precision drive system, many adverse working conditions are hidden or revealed which lead to difficultly in producing high quality products, and even the major faults. So, the study of permanent magnet AC servo precision drive system is great theoretical significance and practical significance. This thesis is funded by Chongqing Municipal Important Science and Technology Key Project, China (CSTC, No. 2006AA3010). The electromechanical coupling dynamic analysis and experiment on the permanent magnet AC servo precision drive system are researched. The major contribution of the work is summarized as followings.Detailed finite element methods and the subspace iteration method, and the principle of modal analysis and modal extraction method are to provide a theoretical basis to modal analysis. There is modal analysis of permanent magnet AC servo precision drive system by using the finite element software ABAQUS. The modules of ABAQUS are explained and the process of modal analysis is detailed calculated, as well as the former third natural frequency and the vibration.Based on the method of modal parameter identification and the LMS test macro, the time domain waveform is obtained by the working modal experiment of the permanent magnet AC servo precision drive system. Moreover, the former third-order natural frequency and damping ratio of the system is educed by the method of frequency domain decomposition, which is compared with the results of the modal analysis. |
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