設計了二自由度兩彈簧振子系統，并進行了系統理論模態分析與ANSYS仿真，通過激振實驗對系統進行了頻率響應特性和模態分析，研究了系統振動動態特性測試。研究結果表明，實驗觀測數據、ANSYS仿真結果與理論分析值較為一致。通過對彈簧振子的動態性能測試和分析，為深入研究機械振動特性提供了參考。
關 鍵 詞 二自由度兩彈簧振子系統; 模態分析; 動態特性測試; 頻率響應

Design and Analysis of a Two-Spring-Two-Freedom Vibration System
DONG Zheng，CAI Shuang，XU Lim-ei，HUANG Dag-ui
(School of Mechatronic Engineering, Univ. of Electron. Sci. & Tech. of China Chengdu 610054)
Abstract this paper presents a two-spring-two-freedom vibration system. The theoretic modal analysis and computer simulation of this system are given. Through vibration experiment, both the frequency response characteristic and modal characteristic are analyzed. The experimental method of how to test the dynamic characteristic of vibration system is also researched. The results demonstrate that the vibration experiment, computer simulation and theoretic analysis are commendably consistent.
Key words two-spring-two-freedom vibration system; modal analysis; dynamic characteristic test; frequency response